diff --git a/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/CacheOutdatedTest.php b/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/CacheOutdatedTest.php
index 2fbfc43aa8775..f49911c3e7a93 100644
--- a/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/CacheOutdatedTest.php
+++ b/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/CacheOutdatedTest.php
@@ -62,6 +62,9 @@ public function testGetIdentity($expectedSum, $cacheTypes)
         $this->assertEquals($expectedSum, $this->_messageModel->getIdentity());
     }
 
+    /**
+     * @return array
+     */
     public function getIdentityDataProvider()
     {
         $cacheTypeMock1 = $this->createPartialMock(\stdClass::class, ['getCacheType']);
@@ -95,6 +98,9 @@ public function testIsDisplayed($expected, $allowed, $cacheTypes)
         $this->assertEquals($expected, $this->_messageModel->isDisplayed());
     }
 
+    /**
+     * @return array
+     */
     public function isDisplayedDataProvider()
     {
         $cacheTypesMock = $this->createPartialMock(\stdClass::class, ['getCacheType']);
diff --git a/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/Media/Synchronization/ErrorTest.php b/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/Media/Synchronization/ErrorTest.php
index 2c259db868851..b490efd8e9683 100644
--- a/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/Media/Synchronization/ErrorTest.php
+++ b/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/Media/Synchronization/ErrorTest.php
@@ -72,6 +72,9 @@ public function testIsDisplayed($expectedFirstRun, $data)
         $this->assertEquals($expectedFirstRun, $model->isDisplayed());
     }
 
+    /**
+     * @return array
+     */
     public function isDisplayedDataProvider()
     {
         return [
diff --git a/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/SecurityTest.php b/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/SecurityTest.php
index 1e71570a5e30b..c6f61fee862ba 100644
--- a/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/SecurityTest.php
+++ b/app/code/Magento/AdminNotification/Test/Unit/Model/System/Message/SecurityTest.php
@@ -76,6 +76,9 @@ public function testIsDisplayed($expectedResult, $cached, $response)
         $this->assertEquals($expectedResult, $this->_messageModel->isDisplayed());
     }
 
+    /**
+     * @return array
+     */
     public function isDisplayedDataProvider()
     {
         return [
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php
index bb64acb558320..7a81ccae6f0d0 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php
@@ -181,6 +181,9 @@ public function testIsValidAddMessagesCall($value, $hasEmptyColumns, $customerGr
         $this->tierPrice->isValid($value);
     }
 
+    /**
+     * @return array
+     */
     public function isValidResultFalseDataProvider()
     {
         return [
@@ -286,6 +289,9 @@ public function isValidResultFalseDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function isValidAddMessagesCallDataProvider()
     {
         return [
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/WebsiteTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/WebsiteTest.php
index 9a380ff75da24..b46e286e75007 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/WebsiteTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/WebsiteTest.php
@@ -114,6 +114,9 @@ public function testGetAllWebsitesValue()
         $this->assertEquals($expectedResult, $result);
     }
 
+    /**
+     * @return array
+     */
     public function isValidReturnDataProvider()
     {
         return [
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/ValidatorTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/ValidatorTest.php
index d9fce98826105..5ca534284a48d 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/ValidatorTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/ValidatorTest.php
@@ -77,6 +77,9 @@ public function testInit()
         $this->validator->init(null);
     }
 
+    /**
+     * @return array
+     */
     public function isValidDataProvider()
     {
         return [
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php
index 6d130d93ee6a5..08743b9fa7f2c 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php
@@ -768,6 +768,9 @@ public function testSaveProductPrices($priceData, $oldSkus, $priceIn, $callNum)
         $this->invokeMethod($this->advancedPricing, 'saveProductPrices', [$priceData, 'table']);
     }
 
+    /**
+     * @return array
+     */
     public function saveProductPricesDataProvider()
     {
         return [
@@ -839,6 +842,9 @@ public function testDeleteProductTierPrices(
         );
     }
 
+    /**
+     * @return array
+     */
     public function deleteProductTierPricesDataProvider()
     {
         return [
@@ -921,6 +927,9 @@ public function testProcessCountExistingPrices(
         $this->invokeMethod($this->advancedPricing, 'processCountExistingPrices', [$prices, 'table']);
     }
 
+    /**
+     * @return array
+     */
     public function processCountExistingPricesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Amqp/Test/Unit/Setup/ConfigOptionsListTest.php b/app/code/Magento/Amqp/Test/Unit/Setup/ConfigOptionsListTest.php
index 8db9ae73034a2..5b19ba055d059 100644
--- a/app/code/Magento/Amqp/Test/Unit/Setup/ConfigOptionsListTest.php
+++ b/app/code/Magento/Amqp/Test/Unit/Setup/ConfigOptionsListTest.php
@@ -163,6 +163,9 @@ public function testValidateNoOptions()
         $this->assertEquals($expectedResult, $this->model->validate($options, $this->deploymentConfigMock));
     }
 
+    /**
+     * @return array
+     */
     public function getCreateConfigDataProvider()
     {
         return [
diff --git a/app/code/Magento/Analytics/Test/Unit/Model/Connector/Http/JsonConverterTest.php b/app/code/Magento/Analytics/Test/Unit/Model/Connector/Http/JsonConverterTest.php
index 5ad8eebfc7ad3..251f0d1474083 100644
--- a/app/code/Magento/Analytics/Test/Unit/Model/Connector/Http/JsonConverterTest.php
+++ b/app/code/Magento/Analytics/Test/Unit/Model/Connector/Http/JsonConverterTest.php
@@ -55,6 +55,9 @@ public function testConvertBody($unserializedResult, $expected)
         $this->assertEquals($expected, $this->converter->fromBody('body'));
     }
 
+    /**
+     * @return array
+     */
     public function convertBodyDataProvider()
     {
         return [
diff --git a/app/code/Magento/AsynchronousOperations/Test/Unit/Model/BulkStatusTest.php b/app/code/Magento/AsynchronousOperations/Test/Unit/Model/BulkStatusTest.php
index 7a2f7941f9c04..a5a75736d2441 100644
--- a/app/code/Magento/AsynchronousOperations/Test/Unit/Model/BulkStatusTest.php
+++ b/app/code/Magento/AsynchronousOperations/Test/Unit/Model/BulkStatusTest.php
@@ -174,6 +174,9 @@ public function testGetOperationsCountByBulkIdAndStatus()
         $this->assertEquals($size, $this->model->getOperationsCountByBulkIdAndStatus($bulkUuid, $status));
     }
 
+    /**
+     * @return array
+     */
     public function getFailedOperationsByBulkIdDataProvider()
     {
         return [
diff --git a/app/code/Magento/AsynchronousOperations/Test/Unit/Model/Entity/BulkSummaryMapperTest.php b/app/code/Magento/AsynchronousOperations/Test/Unit/Model/Entity/BulkSummaryMapperTest.php
index 725eae3c01ea3..9543911c037d8 100644
--- a/app/code/Magento/AsynchronousOperations/Test/Unit/Model/Entity/BulkSummaryMapperTest.php
+++ b/app/code/Magento/AsynchronousOperations/Test/Unit/Model/Entity/BulkSummaryMapperTest.php
@@ -95,6 +95,9 @@ public function testEntityToDatabase($identifier, $result)
         $this->assertEquals($result, $this->model->entityToDatabase($entityType, $data));
     }
 
+    /**
+     * @return array
+     */
     public function entityToDatabaseDataProvider()
     {
         return [
diff --git a/app/code/Magento/AsynchronousOperations/Test/Unit/Model/ResourceModel/System/Message/Collection/Synchronized/PluginTest.php b/app/code/Magento/AsynchronousOperations/Test/Unit/Model/ResourceModel/System/Message/Collection/Synchronized/PluginTest.php
index 68864d12e7672..6a51258b34afc 100644
--- a/app/code/Magento/AsynchronousOperations/Test/Unit/Model/ResourceModel/System/Message/Collection/Synchronized/PluginTest.php
+++ b/app/code/Magento/AsynchronousOperations/Test/Unit/Model/ResourceModel/System/Message/Collection/Synchronized/PluginTest.php
@@ -153,6 +153,9 @@ public function testAfterTo($operationDetails)
         $this->assertEquals(2, $result2['totalRecords']);
     }
 
+    /**
+     * @return array
+     */
     public function afterToDataProvider()
     {
         return [
diff --git a/app/code/Magento/Authorization/Test/Unit/Model/Acl/AclRetrieverTest.php b/app/code/Magento/Authorization/Test/Unit/Model/Acl/AclRetrieverTest.php
index c214cfc832597..cd51c0f9bc4b8 100644
--- a/app/code/Magento/Authorization/Test/Unit/Model/Acl/AclRetrieverTest.php
+++ b/app/code/Magento/Authorization/Test/Unit/Model/Acl/AclRetrieverTest.php
@@ -78,6 +78,9 @@ public function testGetAllowedResourcesByUser()
         );
     }
 
+    /**
+     * @return AclRetriever
+     */
     protected function createAclRetriever()
     {
         $this->roleMock = $this->createPartialMock(\Magento\Authorization\Model\Role::class, ['getId', '__wakeup']);
diff --git a/app/code/Magento/Authorizenet/Test/Unit/Model/Directpost/ResponseTest.php b/app/code/Magento/Authorizenet/Test/Unit/Model/Directpost/ResponseTest.php
index 6e5d55e52675e..15c7eecb09a69 100644
--- a/app/code/Magento/Authorizenet/Test/Unit/Model/Directpost/ResponseTest.php
+++ b/app/code/Magento/Authorizenet/Test/Unit/Model/Directpost/ResponseTest.php
@@ -37,6 +37,9 @@ public function testGenerateHash($merchantMd5, $merchantApiLogin, $amount, $amou
         );
     }
 
+    /**
+     * @return array
+     */
     public function generateHashDataProvider()
     {
         return [
@@ -57,6 +60,13 @@ public function generateHashDataProvider()
         ];
     }
 
+    /**
+     * @param $merchantMd5
+     * @param $merchantApiLogin
+     * @param $amount
+     * @param $transactionId
+     * @return string
+     */
     protected function generateHash($merchantMd5, $merchantApiLogin, $amount, $transactionId)
     {
         return strtoupper(md5($merchantMd5 . $merchantApiLogin . $transactionId . $amount));
diff --git a/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/AuthenticationTest.php b/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/AuthenticationTest.php
index 7e4c426de9452..88b994a6b93b7 100644
--- a/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/AuthenticationTest.php
+++ b/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/AuthenticationTest.php
@@ -146,6 +146,9 @@ public function testProcessNotLoggedInUser($isIFrameParam, $isAjaxParam, $isForw
         $this->assertEquals($expectedResult, $this->plugin->aroundDispatch($subject, $proceed, $request));
     }
 
+    /**
+     * @return array
+     */
     public function processNotLoggedInUserDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/MassactionKeyTest.php b/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/MassactionKeyTest.php
index 2f808eaf2d1b8..d793a80cdeacf 100644
--- a/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/MassactionKeyTest.php
+++ b/app/code/Magento/Backend/Test/Unit/App/Action/Plugin/MassactionKeyTest.php
@@ -74,6 +74,9 @@ public function testBeforeDispatchWhenMassactionPrepareKeyRequestExists($postDat
         $this->plugin->beforeDispatch($this->subjectMock, $this->requestMock);
     }
 
+    /**
+     * @return array
+     */
     public function beforeDispatchDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/App/Action/Stub/ActionStub.php b/app/code/Magento/Backend/Test/Unit/App/Action/Stub/ActionStub.php
index 4eff6218961af..2d60bef3f3e8c 100644
--- a/app/code/Magento/Backend/Test/Unit/App/Action/Stub/ActionStub.php
+++ b/app/code/Magento/Backend/Test/Unit/App/Action/Stub/ActionStub.php
@@ -8,6 +8,9 @@
 
 class ActionStub extends \Magento\Backend\App\Action
 {
+    /**
+     * @return \Magento\Framework\App\ResponseInterface|\Magento\Framework\Controller\ResultInterface|void
+     */
     public function execute()
     {
         // Empty method stub for test
diff --git a/app/code/Magento/Backend/Test/Unit/App/Area/FrontNameResolverTest.php b/app/code/Magento/Backend/Test/Unit/App/Area/FrontNameResolverTest.php
index bc7dce6f20bac..642c6283decae 100644
--- a/app/code/Magento/Backend/Test/Unit/App/Area/FrontNameResolverTest.php
+++ b/app/code/Magento/Backend/Test/Unit/App/Area/FrontNameResolverTest.php
@@ -118,6 +118,9 @@ public function testIsHostBackend($url, $host, $useCustomAdminUrl, $customAdminU
         $this->assertEquals($this->model->isHostBackend(), $expectedValue);
     }
 
+    /**
+     * @return array
+     */
     public function hostsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/App/ConfigTest.php b/app/code/Magento/Backend/Test/Unit/App/ConfigTest.php
index 114c57867badf..53640a81e722f 100644
--- a/app/code/Magento/Backend/Test/Unit/App/ConfigTest.php
+++ b/app/code/Magento/Backend/Test/Unit/App/ConfigTest.php
@@ -70,6 +70,9 @@ public function testIsSetFlag($configPath, $configValue, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->isSetFlag($configPath));
     }
 
+    /**
+     * @return array
+     */
     public function isSetFlagDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/AnchorRendererTest.php b/app/code/Magento/Backend/Test/Unit/Block/AnchorRendererTest.php
index f52f4ab337712..eccb08e788a95 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/AnchorRendererTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/AnchorRendererTest.php
@@ -141,6 +141,9 @@ public function testRenderAnchorLevelIsNotOne($hasTarget)
         );
     }
 
+    /**
+     * @return array
+     */
     public function targetDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Cache/AdditionalTest.php b/app/code/Magento/Backend/Test/Unit/Block/Cache/AdditionalTest.php
index d68a1e4a920b2..915b3fe21eaa8 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Cache/AdditionalTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Cache/AdditionalTest.php
@@ -88,6 +88,9 @@ public function testIsInProductionMode($mode, $expected)
         $this->assertEquals($expected, $this->additionalBlock->isInProductionMode());
     }
 
+    /**
+     * @return array
+     */
     public function isInProductionModeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/MenuItemCheckerTest.php b/app/code/Magento/Backend/Test/Unit/Block/MenuItemCheckerTest.php
index a79050faeb84a..aca719b2e65e9 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/MenuItemCheckerTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/MenuItemCheckerTest.php
@@ -74,6 +74,9 @@ public function testIsItemActiveLevelNotZero()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/ButtonTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/ButtonTest.php
index bcf5d1adbc12b..e64d1a97af4ae 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/ButtonTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/ButtonTest.php
@@ -61,6 +61,9 @@ public function testGetAttributesHtml($data, $expect)
         $this->assertRegExp($expect, $attributes);
     }
 
+    /**
+     * @return array
+     */
     public function getAttributesHtmlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/Radio/ExtendedTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/Radio/ExtendedTest.php
index 35e21d7d194aa..81f104dbb636b 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/Radio/ExtendedTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/Radio/ExtendedTest.php
@@ -54,6 +54,9 @@ public function testRender(array $rowData, $expectedResult)
         $this->assertEquals($expectedResult, $this->_object->render(new \Magento\Framework\DataObject($rowData)));
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/RadioTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/RadioTest.php
index 67ead0ddd8f35..6f838634c6bed 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/RadioTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Column/Renderer/RadioTest.php
@@ -63,6 +63,9 @@ public function testRender(array $rowData, $expectedResult)
         $this->assertEquals($expectedResult, $this->_object->render(new \Magento\Framework\DataObject($rowData)));
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/ColumnTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/ColumnTest.php
index c5c56fd75fbe7..2e6bed4783e7f 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/ColumnTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/ColumnTest.php
@@ -86,6 +86,9 @@ public function testGetSortable($value)
         $this->assertFalse($this->_block->getSortable());
     }
 
+    /**
+     * @return array
+     */
     public function getSortableDataProvider()
     {
         return ['zero' => ['0'], 'false' => [false], 'null' => [null]];
@@ -374,6 +377,9 @@ public function testColumnIsGrouped($groupedData, $expected)
         $this->assertEquals($expected, $block->isGrouped());
     }
 
+    /**
+     * @return array
+     */
     public function columnGroupedDataProvider()
     {
         return [[[], false], [['grouped' => 0], false], [['grouped' => 1], true]];
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Massaction/ExtendedTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Massaction/ExtendedTest.php
index 4525de1fee542..f81928c4540ba 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Massaction/ExtendedTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/Massaction/ExtendedTest.php
@@ -152,6 +152,9 @@ public function testGetGridIdsJsonWithUseSelectAll(array $items, $result)
         $this->assertEquals($result, $this->_block->getGridIdsJson());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderGetGridIdsJsonWithUseSelectAll()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/MassactionTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/MassactionTest.php
index 29ce448a04ecb..e8143b5f6b43a 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/MassactionTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/Grid/MassactionTest.php
@@ -243,6 +243,9 @@ public function testSelected($param, $expectedJson, $expected)
         $this->assertEquals($expected, $this->_block->getSelected());
     }
 
+    /**
+     * @return array
+     */
     public function selectedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Block/Widget/TabTest.php b/app/code/Magento/Backend/Test/Unit/Block/Widget/TabTest.php
index 1670233324f8e..ad7c6fa99afd2 100644
--- a/app/code/Magento/Backend/Test/Unit/Block/Widget/TabTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Block/Widget/TabTest.php
@@ -34,6 +34,9 @@ public function testGetters($method, $field, $value, $expected)
         $this->assertEquals($expected, $object->{$method}());
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Helper/DataTest.php b/app/code/Magento/Backend/Test/Unit/Helper/DataTest.php
index b7a33ab883b69..50c3a8571b48f 100644
--- a/app/code/Magento/Backend/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Helper/DataTest.php
@@ -60,6 +60,9 @@ public function testPrepareFilterStringValues(array $inputString, array $expecte
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function getPrepareFilterStringValuesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Model/Auth/SessionTest.php b/app/code/Magento/Backend/Test/Unit/Model/Auth/SessionTest.php
index 391deac5a1f4e..f1a4bc355b08e 100644
--- a/app/code/Magento/Backend/Test/Unit/Model/Auth/SessionTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/Auth/SessionTest.php
@@ -120,6 +120,9 @@ public function testRefreshAcl($isUserPassedViaParams)
         $this->assertSame($aclMock, $this->session->getAcl());
     }
 
+    /**
+     * @return array
+     */
     public function refreshAclDataProvider()
     {
         return [
@@ -234,6 +237,9 @@ public function testIsAllowed($isUserDefined, $isAclDefined, $isAllowed, $expect
         $this->assertEquals($expectedResult, $this->session->isAllowed('resource'));
     }
 
+    /**
+     * @return array
+     */
     public function isAllowedDataProvider()
     {
         return [
@@ -254,6 +260,9 @@ public function testFirstPageAfterLogin($isFirstPageAfterLogin)
         $this->assertEquals($isFirstPageAfterLogin, $this->session->isFirstPageAfterLogin());
     }
 
+    /**
+     * @return array
+     */
     public function firstPageAfterLoginDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Model/Config/SessionLifetime/BackendModelTest.php b/app/code/Magento/Backend/Test/Unit/Model/Config/SessionLifetime/BackendModelTest.php
index a2e827c4a9938..cce83c33a2aaa 100755
--- a/app/code/Magento/Backend/Test/Unit/Model/Config/SessionLifetime/BackendModelTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/Config/SessionLifetime/BackendModelTest.php
@@ -29,6 +29,9 @@ public function testBeforeSave($value, $errorMessage = null)
         $this->assertEquals($model, $object);
     }
 
+    /**
+     * @return array
+     */
     public function adminSessionLifetimeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Model/Menu/ConfigTest.php b/app/code/Magento/Backend/Test/Unit/Model/Menu/ConfigTest.php
index bb1de1b10d5d4..260a38a481b3c 100644
--- a/app/code/Magento/Backend/Test/Unit/Model/Menu/ConfigTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/Menu/ConfigTest.php
@@ -140,6 +140,9 @@ public function testGetMenuExceptionLogged($expectedException)
         $this->model->getMenu();
     }
 
+    /**
+     * @return array
+     */
     public function getMenuExceptionLoggedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Model/Menu/Item/ValidatorTest.php b/app/code/Magento/Backend/Test/Unit/Model/Menu/Item/ValidatorTest.php
index 3c1f1e43900be..dec85f4b98e3d 100644
--- a/app/code/Magento/Backend/Test/Unit/Model/Menu/Item/ValidatorTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/Menu/Item/ValidatorTest.php
@@ -79,6 +79,9 @@ public function testValidateWithMissingRequiredParamThrowsException($requiredPar
         }
     }
 
+    /**
+     * @return array
+     */
     public function requiredParamsProvider()
     {
         return [['id'], ['title'], ['resource']];
@@ -102,6 +105,9 @@ public function testValidateWithNonValidPrimitivesThrowsException($param, $inval
         }
     }
 
+    /**
+     * @return array
+     */
     public function invalidParamsProvider()
     {
         return [
diff --git a/app/code/Magento/Backend/Test/Unit/Model/MenuBuilderTest.php b/app/code/Magento/Backend/Test/Unit/Model/MenuBuilderTest.php
index 23d1ed5da1425..5d026a2b1fc32 100644
--- a/app/code/Magento/Backend/Test/Unit/Model/MenuBuilderTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/MenuBuilderTest.php
@@ -35,6 +35,9 @@ public function testAfterGetResult($isPub, $times)
         );
     }
 
+    /**
+     * @return array
+     */
     public function afterGetResultDataProvider()
     {
         return [[true, 1], [false, 0],];
diff --git a/app/code/Magento/Backend/Test/Unit/Model/Session/AdminConfigTest.php b/app/code/Magento/Backend/Test/Unit/Model/Session/AdminConfigTest.php
index 49fcdf4fc8770..00ae8c2f44a69 100644
--- a/app/code/Magento/Backend/Test/Unit/Model/Session/AdminConfigTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/Session/AdminConfigTest.php
@@ -136,6 +136,9 @@ public function testSetSessionSettingsByConstructor($secureRequest)
         $this->assertSame($secureRequest, $adminConfig->getCookieSecure());
     }
 
+    /**
+     * @return array
+     */
     public function requestSecureDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Backend/Test/Unit/Model/Widget/Grid/ParserTest.php b/app/code/Magento/Backend/Test/Unit/Model/Widget/Grid/ParserTest.php
index 569c5ffc16c9c..98f1965477b2c 100644
--- a/app/code/Magento/Backend/Test/Unit/Model/Widget/Grid/ParserTest.php
+++ b/app/code/Magento/Backend/Test/Unit/Model/Widget/Grid/ParserTest.php
@@ -58,6 +58,9 @@ public function testIsOperation($operation, $expected)
         $this->assertEquals($expected, $this->_model->isOperation($operation));
     }
 
+    /**
+     * @return array
+     */
     public function isOperationDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/Items/RendererTest.php b/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/Items/RendererTest.php
index 414b460a1b81d..473fbbd035b00 100644
--- a/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/Items/RendererTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/Items/RendererTest.php
@@ -46,6 +46,9 @@ public function testGetChildrenEmptyItems($class, $method, $returnClass)
         $this->assertSame(null, $this->model->getChildren($item));
     }
 
+    /**
+     * @return array
+     */
     public function getChildrenEmptyItemsDataProvider()
     {
         return [
@@ -97,6 +100,9 @@ public function testGetChildren($parentItem)
         $this->assertSame([2 => $this->orderItem], $this->model->getChildren($item));
     }
 
+    /**
+     * @return array
+     */
     public function getChildrenDataProvider()
     {
         return [
@@ -116,6 +122,9 @@ public function testIsShipmentSeparatelyWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isShipmentSeparately());
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithoutItemDataProvider()
     {
         return [
@@ -145,6 +154,9 @@ public function testIsShipmentSeparatelyWithItem($productOptions, $result, $pare
         $this->assertSame($result, $this->model->isShipmentSeparately($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithItemDataProvider()
     {
         return [
@@ -166,6 +178,9 @@ public function testIsChildCalculatedWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isChildCalculated());
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithoutItemDataProvider()
     {
         return [
@@ -195,6 +210,9 @@ public function testIsChildCalculatedWithItem($productOptions, $result, $parentI
         $this->assertSame($result, $this->model->isChildCalculated($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithItemDataProvider()
     {
         return [
@@ -257,6 +275,9 @@ public function testCanShowPriceInfo($parentItem, $productOptions, $result)
         $this->assertSame($result, $this->model->canShowPriceInfo($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function canShowPriceInfoDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/View/Items/RendererTest.php b/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/View/Items/RendererTest.php
index 95dcb48f84be1..5d8cabdd8c1b9 100644
--- a/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/View/Items/RendererTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Block/Adminhtml/Sales/Order/View/Items/RendererTest.php
@@ -41,6 +41,9 @@ public function testIsShipmentSeparatelyWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isShipmentSeparately());
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithoutItemDataProvider()
     {
         return [
@@ -70,6 +73,9 @@ public function testIsShipmentSeparatelyWithItem($productOptions, $result, $pare
         $this->assertSame($result, $this->model->isShipmentSeparately($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithItemDataProvider()
     {
         return [
@@ -91,6 +97,9 @@ public function testIsChildCalculatedWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isChildCalculated());
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithoutItemDataProvider()
     {
         return [
@@ -120,6 +129,9 @@ public function testIsChildCalculatedWithItem($productOptions, $result, $parentI
         $this->assertSame($result, $this->model->isChildCalculated($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithItemDataProvider()
     {
         return [
@@ -151,6 +163,9 @@ public function testGetSelectionAttributesWithBundle()
         $this->assertEquals($unserializedResult, $this->model->getSelectionAttributes($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function getSelectionAttributesDataProvider()
     {
         return [
@@ -184,6 +199,9 @@ public function testCanShowPriceInfo($parentItem, $productOptions, $result)
         $this->assertSame($result, $this->model->canShowPriceInfo($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function canShowPriceInfoDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Block/Catalog/Product/View/Type/BundleTest.php b/app/code/Magento/Bundle/Test/Unit/Block/Catalog/Product/View/Type/BundleTest.php
index ec250756d5b2b..c252e5f99612f 100644
--- a/app/code/Magento/Bundle/Test/Unit/Block/Catalog/Product/View/Type/BundleTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Block/Catalog/Product/View/Type/BundleTest.php
@@ -330,6 +330,10 @@ private function updateBundleBlock($options, $priceInfo, $priceType)
             ->will($this->returnArgument(0));
     }
 
+    /**
+     * @param $price
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getPriceInfoMock($price)
     {
         $priceInfoMock = $this->getMockBuilder(\Magento\Framework\Pricing\PriceInfo\Base::class)
@@ -354,6 +358,10 @@ private function getPriceInfoMock($price)
         return $priceInfoMock;
     }
 
+    /**
+     * @param $prices
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getPriceMock($prices)
     {
         $methods = [];
diff --git a/app/code/Magento/Bundle/Test/Unit/Block/Sales/Order/Items/RendererTest.php b/app/code/Magento/Bundle/Test/Unit/Block/Sales/Order/Items/RendererTest.php
index d79afdddfb7ae..2f5dcef391063 100644
--- a/app/code/Magento/Bundle/Test/Unit/Block/Sales/Order/Items/RendererTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Block/Sales/Order/Items/RendererTest.php
@@ -47,6 +47,9 @@ public function testGetChildrenEmptyItems($class, $method, $returnClass)
         $this->assertSame(null, $this->model->getChildren($item));
     }
 
+    /**
+     * @return array
+     */
     public function getChildrenEmptyItemsDataProvider()
     {
         return [
@@ -96,6 +99,9 @@ public function testGetChildren($parentItem)
         $this->assertSame([2 => $this->orderItem], $this->model->getChildren($item));
     }
 
+    /**
+     * @return array
+     */
     public function getChildrenDataProvider()
     {
         return [
@@ -115,6 +121,9 @@ public function testIsShipmentSeparatelyWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isShipmentSeparately());
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithoutItemDataProvider()
     {
         return [
@@ -144,6 +153,9 @@ public function testIsShipmentSeparatelyWithItem($productOptions, $result, $pare
         $this->assertSame($result, $this->model->isShipmentSeparately($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithItemDataProvider()
     {
         return [
@@ -165,6 +177,9 @@ public function testIsChildCalculatedWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isChildCalculated());
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithoutItemDataProvider()
     {
         return [
@@ -194,6 +209,9 @@ public function testIsChildCalculatedWithItem($productOptions, $result, $parentI
         $this->assertSame($result, $this->model->isChildCalculated($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithItemDataProvider()
     {
         return [
@@ -238,6 +256,9 @@ public function testCanShowPriceInfo($parentItem, $productOptions, $result)
         $this->assertSame($result, $this->model->canShowPriceInfo($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function canShowPriceInfoDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Model/Sales/Order/Pdf/Items/AbstractItemsTest.php b/app/code/Magento/Bundle/Test/Unit/Model/Sales/Order/Pdf/Items/AbstractItemsTest.php
index ecce34363819e..3e9aeaed5c5b4 100644
--- a/app/code/Magento/Bundle/Test/Unit/Model/Sales/Order/Pdf/Items/AbstractItemsTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Model/Sales/Order/Pdf/Items/AbstractItemsTest.php
@@ -49,6 +49,9 @@ public function testGetChildrenEmptyItems($class, $method, $returnClass)
         $this->assertSame(null, $this->model->getChildren($item));
     }
 
+    /**
+     * @return array
+     */
     public function getChildrenEmptyItemsDataProvider()
     {
         return [
@@ -97,6 +100,9 @@ public function testGetChildren($parentItem)
         $this->assertSame([2 => $this->orderItem], $this->model->getChildren($item));
     }
 
+    /**
+     * @return array
+     */
     public function getChildrenDataProvider()
     {
         return [
@@ -116,6 +122,9 @@ public function testIsShipmentSeparatelyWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isShipmentSeparately());
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithoutItemDataProvider()
     {
         return [
@@ -146,6 +155,9 @@ public function testIsShipmentSeparatelyWithItem($productOptions, $result, $pare
         $this->assertSame($result, $this->model->isShipmentSeparately($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isShipmentSeparatelyWithItemDataProvider()
     {
         return [
@@ -167,6 +179,9 @@ public function testIsChildCalculatedWithoutItem($productOptions, $result)
         $this->assertSame($result, $this->model->isChildCalculated());
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithoutItemDataProvider()
     {
         return [
@@ -197,6 +212,9 @@ public function testIsChildCalculatedWithItem($productOptions, $result, $parentI
         $this->assertSame($result, $this->model->isChildCalculated($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function isChildCalculatedWithItemDataProvider()
     {
         return [
@@ -217,6 +235,9 @@ public function testGetBundleOptions($productOptions, $result)
         $this->assertSame($result, $this->model->getBundleOptions());
     }
 
+    /**
+     * @return array
+     */
     public function getBundleOptionsDataProvider()
     {
         return [
@@ -277,6 +298,9 @@ public function testCanShowPriceInfo($parentItem, $productOptions, $result)
         $this->assertSame($result, $this->model->canShowPriceInfo($this->orderItem));
     }
 
+    /**
+     * @return array
+     */
     public function canShowPriceInfoDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Pricing/Adjustment/CalculatorTest.php b/app/code/Magento/Bundle/Test/Unit/Pricing/Adjustment/CalculatorTest.php
index 845d735e0d801..423155661f1ef 100644
--- a/app/code/Magento/Bundle/Test/Unit/Pricing/Adjustment/CalculatorTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Pricing/Adjustment/CalculatorTest.php
@@ -585,6 +585,9 @@ public function testGetOptionsAmount($searchMin, $useRegularPrice)
         $this->assertEquals($expectedResult, $result, 'Incorrect result');
     }
 
+    /**
+     * @return array
+     */
     public function getOptionsAmountDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Pricing/Price/BundleSelectionPriceTest.php b/app/code/Magento/Bundle/Test/Unit/Pricing/Price/BundleSelectionPriceTest.php
index d43b0575aea91..d35619bb043a0 100644
--- a/app/code/Magento/Bundle/Test/Unit/Pricing/Price/BundleSelectionPriceTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Pricing/Price/BundleSelectionPriceTest.php
@@ -103,6 +103,9 @@ protected function setUp()
         $this->setupSelectionPrice();
     }
 
+    /**
+     * @param bool $useRegularPrice
+     */
     protected function setupSelectionPrice($useRegularPrice = false)
     {
         $this->selectionPrice = new \Magento\Bundle\Pricing\Price\BundleSelectionPrice(
@@ -336,6 +339,9 @@ public function testFixedPriceWithMultipleQty($useRegularPrice)
         $this->assertEquals($expectedPrice, $selectionPrice->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function useRegularPriceDataProvider()
     {
         return [
diff --git a/app/code/Magento/Bundle/Test/Unit/Ui/DataProvider/Product/BundleDataProviderTest.php b/app/code/Magento/Bundle/Test/Unit/Ui/DataProvider/Product/BundleDataProviderTest.php
index 7b4d42568f686..1c3cf33cbf73b 100644
--- a/app/code/Magento/Bundle/Test/Unit/Ui/DataProvider/Product/BundleDataProviderTest.php
+++ b/app/code/Magento/Bundle/Test/Unit/Ui/DataProvider/Product/BundleDataProviderTest.php
@@ -76,6 +76,9 @@ protected function setUp()
             ->getMock();
     }
 
+    /**
+     * @return object
+     */
     protected function getModel()
     {
         return $this->objectManager->getObject(BundleDataProvider::class, [
diff --git a/app/code/Magento/CacheInvalidate/Test/Unit/Model/PurgeCacheTest.php b/app/code/Magento/CacheInvalidate/Test/Unit/Model/PurgeCacheTest.php
index 013ec3a467104..c66e27ea41025 100644
--- a/app/code/Magento/CacheInvalidate/Test/Unit/Model/PurgeCacheTest.php
+++ b/app/code/Magento/CacheInvalidate/Test/Unit/Model/PurgeCacheTest.php
@@ -84,6 +84,9 @@ public function testSendPurgeRequest($hosts)
         $this->assertTrue($this->model->sendPurgeRequest('tags'));
     }
 
+    /**
+     * @return array
+     */
     public function sendPurgeRequestDataProvider()
     {
         return [
diff --git a/app/code/Magento/Captcha/Test/Unit/Model/DefaultTest.php b/app/code/Magento/Captcha/Test/Unit/Model/DefaultTest.php
index 429c13e802a87..0500b29f787c2 100644
--- a/app/code/Magento/Captcha/Test/Unit/Model/DefaultTest.php
+++ b/app/code/Magento/Captcha/Test/Unit/Model/DefaultTest.php
@@ -354,6 +354,9 @@ public function testIsShownToLoggedInUser($expectedResult, $formId)
         $this->assertEquals($expectedResult, $captcha->isShownToLoggedInUser());
     }
 
+    /**
+     * @return array
+     */
     public function isShownToLoggedInUserDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Edit/Tab/AlertsTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Edit/Tab/AlertsTest.php
index b45df0380dcc6..5d8db5d5ba589 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Edit/Tab/AlertsTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Edit/Tab/AlertsTest.php
@@ -55,6 +55,9 @@ public function testCanShowTab($priceAllow, $stockAllow, $canShowTab)
         $this->assertEquals($canShowTab, $this->alerts->canShowTab());
     }
 
+    /**
+     * @return array
+     */
     public function canShowTabDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Helper/Form/CategoryTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Helper/Form/CategoryTest.php
index 5e899263519da..1fc105686011f 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Helper/Form/CategoryTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Adminhtml/Product/Helper/Form/CategoryTest.php
@@ -50,6 +50,9 @@ public function testIsAllowed($isAllowed)
         }
     }
 
+    /**
+     * @return array
+     */
     public function isAllowedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Category/Rss/LinkTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Category/Rss/LinkTest.php
index 8932d77a81247..0cff8b2d0f207 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Category/Rss/LinkTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Category/Rss/LinkTest.php
@@ -72,6 +72,9 @@ public function testIsRssAllowed($isAllowed)
         $this->assertEquals($isAllowed, $this->link->isRssAllowed());
     }
 
+    /**
+     * @return array
+     */
     public function isRssAllowedDataProvider()
     {
         return [
@@ -98,6 +101,9 @@ public function testIsTopCategory($isTop, $categoryLevel)
         $this->assertEquals($isTop, $this->link->isTopCategory());
     }
 
+    /**
+     * @return array
+     */
     public function isTopCategoryDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/RelatedTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/RelatedTest.php
index 1d927a6e04ef5..deb84b7b2d3c4 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/RelatedTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/RelatedTest.php
@@ -72,6 +72,9 @@ public function testCanItemsAddToCart($isComposite, $isSaleable, $hasRequiredOpt
         );
     }
 
+    /**
+     * @return array
+     */
     public function canItemsAddToCartDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/ToolbarTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/ToolbarTest.php
index dce0be8e62df3..ac963326dbfa1 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/ToolbarTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Product/ProductList/ToolbarTest.php
@@ -216,6 +216,9 @@ public function testSetModes($mode, $expected)
         $this->assertEquals($expected, $block->getModes());
     }
 
+    /**
+     * @return array
+     */
     public function setModesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/NewProductsTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/NewProductsTest.php
index e2e0fa2f27667..129dea37b185e 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/NewProductsTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/NewProductsTest.php
@@ -91,6 +91,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function isAllowedDataProvider()
     {
         return [
@@ -108,6 +111,9 @@ public function testIsAllowed($configValue, $expectedResult)
         $this->assertEquals($expectedResult, $this->block->isAllowed());
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getItemMock()
     {
         $methods = [
diff --git a/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/SpecialTest.php b/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/SpecialTest.php
index 6509aa138802e..3c9f19d61d16a 100644
--- a/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/SpecialTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Block/Rss/Product/SpecialTest.php
@@ -167,6 +167,9 @@ public function testGetRssData()
         );
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getItemMock()
     {
         $item = $this->getMockBuilder(\Magento\Catalog\Model\Product::class)
diff --git a/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Category/Image/UploadTest.php b/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Category/Image/UploadTest.php
index 07dacae7298cf..e2cd01fd1c23a 100644
--- a/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Category/Image/UploadTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Category/Image/UploadTest.php
@@ -23,6 +23,9 @@ protected function setUp()
         $this->objectManager = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Product/Attribute/ValidateTest.php b/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Product/Attribute/ValidateTest.php
index 450cf4663c99c..9c747393cc72a 100644
--- a/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Product/Attribute/ValidateTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Product/Attribute/ValidateTest.php
@@ -195,6 +195,9 @@ public function testUniqueValidation(array $options, $isError)
         $this->assertInstanceOf(ResultJson::class, $this->getModel()->execute());
     }
 
+    /**
+     * @return array
+     */
     public function provideUniqueData()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Attribute/Config/XsdTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Attribute/Config/XsdTest.php
index a0a563e1e070e..779630b9559c6 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Attribute/Config/XsdTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Attribute/Config/XsdTest.php
@@ -39,6 +39,9 @@ public function testExemplarXml($fixtureXml, array $expectedErrors)
         $this->assertEquals($expectedErrors, $actualErrors);
     }
 
+    /**
+     * @return array
+     */
     public function exemplarXmlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/ImageTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/ImageTest.php
index aef9d761c61ba..8d63530b91287 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/ImageTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/ImageTest.php
@@ -247,6 +247,9 @@ private function setUpModelForAfterSave()
         return $model->setAttribute($this->attribute);
     }
 
+    /**
+     * @return array
+     */
     public function attributeValueDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/SortbyTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/SortbyTest.php
index c582da8811ecb..467d72a549b64 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/SortbyTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/SortbyTest.php
@@ -71,6 +71,9 @@ public function testBeforeSave($attributeCode, $data, $expected)
         $this->assertSame($expected, $object->getData($attributeCode));
     }
 
+    /**
+     * @return array
+     */
     public function beforeSaveDataProvider()
     {
         return [
@@ -117,6 +120,9 @@ public function testAfterLoad($attributeCode, $data, $expected)
         $this->assertSame($expected, $object->getData($attributeCode));
     }
 
+    /**
+     * @return array
+     */
     public function afterLoadDataProvider()
     {
         return [
@@ -159,6 +165,9 @@ public function testValidate($attributeData, $data, $expected)
         $this->assertSame($expected, $this->_model->validate($object));
     }
 
+    /**
+     * @return array
+     */
     public function validateDataProvider()
     {
         return [
@@ -251,6 +260,9 @@ public function testValidateDefaultSort($attributeCode, $data)
         $this->assertTrue($this->_model->validate($object));
     }
 
+    /**
+     * @return array
+     */
     public function validateDefaultSortDataProvider()
     {
         return [
@@ -294,6 +306,9 @@ public function testValidateDefaultSortException($attributeCode, $data)
         $this->_model->validate($object);
     }
 
+    /**
+     * @return array
+     */
     public function validateDefaultSortException()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/CategoryRepositoryTest.php b/app/code/Magento/Catalog/Test/Unit/Model/CategoryRepositoryTest.php
index 0f2166d1a2a6f..864b91b20d017 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/CategoryRepositoryTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/CategoryRepositoryTest.php
@@ -280,6 +280,9 @@ public function testSaveWithValidateCategoryException($error, $expectedException
         $this->model->save($categoryMock);
     }
 
+    /**
+     * @return array
+     */
     public function saveWithValidateCategoryExceptionDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/CategoryTest.php b/app/code/Magento/Catalog/Test/Unit/Model/CategoryTest.php
index 60937dd3f83f0..df01d1bafac3c 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/CategoryTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/CategoryTest.php
@@ -294,6 +294,9 @@ public function testGetUseFlatResourceTrue()
         $this->assertEquals(true, $category->getUseFlatResource());
     }
 
+    /**
+     * @return object
+     */
     protected function getCategoryModel()
     {
         return $this->objectManager->getObject(
@@ -323,6 +326,9 @@ protected function getCategoryModel()
         );
     }
 
+    /**
+     * @return array
+     */
     public function reindexFlatEnabledTestDataProvider()
     {
         return [
@@ -382,6 +388,9 @@ public function testReindexFlatEnabled(
         $this->category->reindex();
     }
 
+    /**
+     * @return array
+     */
     public function reindexFlatDisabledTestDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/Plugin/IndexerConfigDataTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/Plugin/IndexerConfigDataTest.php
index 56bd04594018c..f69cbeb91631f 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/Plugin/IndexerConfigDataTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/Plugin/IndexerConfigDataTest.php
@@ -48,6 +48,9 @@ public function testAroundGet($isFlat, $path, $default, $inputData, $outputData)
         $this->assertEquals($outputData, $this->model->afterGet($this->subjectMock, $inputData, $path, $default));
     }
 
+    /**
+     * @return array
+     */
     public function aroundGetDataProvider()
     {
         $flatIndexerData = [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/StateTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/StateTest.php
index 3beb9a3ffb773..6916cef2dfa61 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/StateTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/StateTest.php
@@ -102,6 +102,9 @@ public function testIsAvailable($isAvailable, $isFlatEnabled, $isValid, $result)
         $this->assertEquals($result, $this->model->isAvailable());
     }
 
+    /**
+     * @return array
+     */
     public function isAvailableDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/System/Config/ModeTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/System/Config/ModeTest.php
index 3b3941d116fde..fb02b80a60175 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/System/Config/ModeTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Flat/System/Config/ModeTest.php
@@ -57,6 +57,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcessValueEqual()
     {
         return [['0', '0'], ['', '0'], ['0', ''], ['1', '1']];
@@ -92,6 +95,9 @@ public function testProcessValueEqual($oldValue, $value)
         $this->model->processValue();
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcessValueOn()
     {
         return [['0', '1'], ['', '1']];
@@ -143,6 +149,9 @@ public function testProcessValueOn($oldValue, $value)
         $this->model->processValue();
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcessValueOff()
     {
         return [['1', '0'], ['1', '']];
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Product/Plugin/StoreGroupTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Product/Plugin/StoreGroupTest.php
index 8310f3692d966..e134407d547ac 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Product/Plugin/StoreGroupTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Category/Product/Plugin/StoreGroupTest.php
@@ -89,6 +89,9 @@ public function testBeforeAndAfterSaveNotNew($valueMap)
         $this->assertSame($this->subject, $this->model->afterSave($this->subject, $this->subject, $this->groupMock));
     }
 
+    /**
+     * @return array
+     */
     public function changedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/ProcessorTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/ProcessorTest.php
index 8c63d77b74f53..d30a8da0e77a2 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/ProcessorTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/ProcessorTest.php
@@ -129,6 +129,9 @@ public function testReindexRow(
         $this->_model->reindexRow(1, $forceReindex);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderReindexRow()
     {
         return [
@@ -198,6 +201,9 @@ public function testReindexList(
         $this->_model->reindexList([1], $forceReindex);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderReindexList()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/System/Config/ModeTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/System/Config/ModeTest.php
index ca67185203738..34cc5c70418b9 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/System/Config/ModeTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Indexer/Product/Flat/System/Config/ModeTest.php
@@ -50,6 +50,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcessValueEqual()
     {
         return [['0', '0'], ['', '0'], ['0', ''], ['1', '1']];
@@ -84,6 +87,9 @@ public function testProcessValueEqual($oldValue, $value)
         $this->model->processValue();
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcessValueOn()
     {
         return [['0', '1'], ['', '1']];
@@ -134,6 +140,9 @@ public function testProcessValueOn($oldValue, $value)
         $this->model->processValue();
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcessValueOff()
     {
         return [['1', '0'], ['1', '']];
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/CategoryTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/CategoryTest.php
index 3e5daf1a98a9c..257a84e50248d 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/CategoryTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/CategoryTest.php
@@ -77,6 +77,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return \Magento\Catalog\Model\Layer\Filter\DataProvider\Category
+     */
     public function testGetCategoryWithAppliedId()
     {
         $storeId = 1234;
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/PriceTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/PriceTest.php
index 3a23ebcdf4518..f2c77627e38d0 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/PriceTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Layer/Filter/DataProvider/PriceTest.php
@@ -165,6 +165,9 @@ public function testValidateFilter($filter, $expectedResult)
         $this->assertSame($expectedResult, $this->target->validateFilter($filter));
     }
 
+    /**
+     * @return array
+     */
     public function validateFilterDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/ActionTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/ActionTest.php
index 8cf075f4d8504..a97e4650b49bd 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/ActionTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/ActionTest.php
@@ -164,6 +164,9 @@ public function testUpdateWebsites($type, $methodName)
         $this->assertEquals($this->model->getDataByKey('action_type'), $type);
     }
 
+    /**
+     * @return array
+     */
     public function updateWebsitesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Frontend/InputType/PresentationTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Frontend/InputType/PresentationTest.php
index 16dff2d210f27..d3d0285614f08 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Frontend/InputType/PresentationTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Frontend/InputType/PresentationTest.php
@@ -40,6 +40,9 @@ public function testGetPresentationInputType(string $inputType, bool $isWysiwygE
         $this->assertEquals($expectedResult, $this->presentation->getPresentationInputType($this->attributeMock));
     }
 
+    /**
+     * @return array
+     */
     public function getPresentationInputTypeDataProvider()
     {
         return [
@@ -59,6 +62,9 @@ public function testConvertPresentationDataToInputType(array $data, array $expec
         $this->assertEquals($expectedResult, $this->presentation->convertPresentationDataToInputType($data));
     }
 
+    /**
+     * @return array
+     */
     public function convertPresentationDataToInputTypeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Source/InputtypeTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Source/InputtypeTest.php
index 0246ba337dbc9..ef3a00e535576 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Source/InputtypeTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/Attribute/Source/InputtypeTest.php
@@ -48,6 +48,9 @@ public function testToOptionArray()
         $this->assertEquals($inputTypesSet, $this->inputtypeModel->toOptionArray());
     }
 
+    /**
+     * @return array
+     */
     private function getInputTypeSet()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/CartConfigurationTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/CartConfigurationTest.php
index 6f1f5e120b100..2144cf34c2a09 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/CartConfigurationTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/CartConfigurationTest.php
@@ -21,6 +21,9 @@ public function testIsProductConfigured($productType, $config, $expected)
         $this->assertEquals($expected, $cartConfiguration->isProductConfigured($productMock, $config));
     }
 
+    /**
+     * @return array
+     */
     public function isProductConfiguredDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/Gallery/ProcessorTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/Gallery/ProcessorTest.php
index d52aad50f05f3..15f003282dc04 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/Gallery/ProcessorTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/Gallery/ProcessorTest.php
@@ -151,6 +151,9 @@ public function testValidate($value)
         $this->assertEquals(!$value, $this->model->validate($this->dataObject));
     }
 
+    /**
+     * @return array
+     */
     public function validateDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/LinkTypeProviderTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/LinkTypeProviderTest.php
index ecf595fa50889..e242b77f1a5fc 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/LinkTypeProviderTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/LinkTypeProviderTest.php
@@ -118,6 +118,9 @@ public function testGetItemAttributes($type, $typeId)
         $this->assertEquals($expectedResult, $this->model->getItemAttributes($type));
     }
 
+    /**
+     * @return array
+     */
     public function getItemAttributesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/Option/Validator/SelectTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/Option/Validator/SelectTest.php
index 046ee703c850e..95a9b961c8d81 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/Option/Validator/SelectTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/Option/Validator/SelectTest.php
@@ -69,6 +69,9 @@ public function testIsValidSuccess($expectedResult, array $value)
         $this->assertEquals($expectedResult, $this->validator->isValid($this->valueMock));
     }
 
+    /**
+     * @return array
+     */
     public function isValidSuccessDataProvider()
     {
         return [
@@ -154,6 +157,9 @@ public function testIsValidateWithInvalidData($priceType, $price, $title)
         $this->assertEquals($messages, $this->validator->getMessages());
     }
 
+    /**
+     * @return array
+     */
     public function isValidateWithInvalidDataDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/ProductList/ToolbarTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/ProductList/ToolbarTest.php
index 84a9e9ded094b..3789ba4ee126d 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/ProductList/ToolbarTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/ProductList/ToolbarTest.php
@@ -112,6 +112,9 @@ public function testGetCurrentPageNoParam()
         $this->assertEquals(1, $this->toolbarModel->getCurrentPage());
     }
 
+    /**
+     * @return array
+     */
     public function stringParamProvider()
     {
         return [
@@ -119,6 +122,9 @@ public function stringParamProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function intParamProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/ReservedAttributeListTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/ReservedAttributeListTest.php
index 7506b4adc1d3a..5080e64f46e27 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/ReservedAttributeListTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/ReservedAttributeListTest.php
@@ -40,6 +40,9 @@ public function testIsReservedAttribute($isUserDefined, $attributeCode, $expecte
         $this->assertEquals($expected, $this->model->isReservedAttribute($attribute));
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/TierPriceManagementTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/TierPriceManagementTest.php
index 371696d08d00e..f340d0b204b62 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/TierPriceManagementTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/TierPriceManagementTest.php
@@ -151,6 +151,9 @@ public function testGetList($configValue, $customerGroupId, $groupData, $expecte
         }
     }
 
+    /**
+     * @return array
+     */
     public function getListDataProvider()
     {
         return [
@@ -403,6 +406,9 @@ public function testAddWithInvalidData($price, $qty)
         $this->service->add('product_sku', 1, $price, $qty);
     }
 
+    /**
+     * @return array
+     */
     public function addDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/Type/AbstractTypeTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/Type/AbstractTypeTest.php
index dcddab60fb0b9..b34375256a959 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/Type/AbstractTypeTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/Type/AbstractTypeTest.php
@@ -96,6 +96,9 @@ public function testAttributesCompare($attr1, $attr2, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->attributesCompare($attribute, $attribute2));
     }
 
+    /**
+     * @return array
+     */
     public function attributeCompareProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/Product/UrlTest.php b/app/code/Magento/Catalog/Test/Unit/Model/Product/UrlTest.php
index 9fa820d64bae1..ef7aad2cbb802 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/Product/UrlTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/Product/UrlTest.php
@@ -169,6 +169,9 @@ public function testGetUrl(
         }
     }
 
+    /**
+     * @return array
+     */
     public function getUrlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/ProductRepositoryTest.php b/app/code/Magento/Catalog/Test/Unit/Model/ProductRepositoryTest.php
index a1cf6662d78f0..3fc3587637dad 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/ProductRepositoryTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/ProductRepositoryTest.php
@@ -1089,6 +1089,9 @@ public function testSaveWithLinks(array $newLinks, array $existingLinks, array $
         $this->assertEquals($this->initializedProductMock, $results);
     }
 
+    /**
+     * @return mixed
+     */
     public function saveWithLinksDataProvider()
     {
         // Scenario 1
@@ -1260,6 +1263,9 @@ public function testSaveExistingWithNewMediaGalleryEntries()
         $this->model->save($this->productMock);
     }
 
+    /**
+     * @return array
+     */
     public function websitesProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/ProductTest.php b/app/code/Magento/Catalog/Test/Unit/Model/ProductTest.php
index 809ec8b9b7a2d..3a357df81fe23 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/ProductTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/ProductTest.php
@@ -514,6 +514,9 @@ public function testGetCategoryCollectionCollectionNull($initCategoryCollection,
         $this->assertEquals($initCategoryCollection, $result);
     }
 
+    /**
+     * @return array
+     */
     public function getCategoryCollectionCollectionNullDataProvider()
     {
         return [
@@ -624,6 +627,9 @@ public function testReindex($productChanged, $isScheduled, $productFlatCount, $c
         $this->model->reindex();
     }
 
+    /**
+     * @return array
+     */
     public function getProductReindexProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/ProductTypes/ConfigTest.php b/app/code/Magento/Catalog/Test/Unit/Model/ProductTypes/ConfigTest.php
index e6de1d33e564d..fb289c7beaac6 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/ProductTypes/ConfigTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/ProductTypes/ConfigTest.php
@@ -68,6 +68,9 @@ public function testGetType($value, $expected)
         $this->assertEquals($expected, $this->config->getType('global'));
     }
 
+    /**
+     * @return array
+     */
     public function getTypeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/ImageTest.php b/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/ImageTest.php
index 431d5736bb6dd..eb7b70c8a1718 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/ImageTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/ImageTest.php
@@ -158,6 +158,9 @@ public function testGetUrl($filePath, $miscParams)
         );
     }
 
+    /**
+     * @return array
+     */
     public function getPathDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/PlaceholderTest.php b/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/PlaceholderTest.php
index 96a6c15e35651..58007145d21a4 100644
--- a/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/PlaceholderTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Model/View/Asset/PlaceholderTest.php
@@ -147,6 +147,9 @@ public function testGetUrl($imageType, $placeholderPath)
         $this->assertEquals($expectedResult, $imageModel->getUrl());
     }
 
+    /**
+     * @return array
+     */
     public function getPathDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Pricing/Price/BasePriceTest.php b/app/code/Magento/Catalog/Test/Unit/Pricing/Price/BasePriceTest.php
index d994e65a63a26..b823549391257 100644
--- a/app/code/Magento/Catalog/Test/Unit/Pricing/Price/BasePriceTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Pricing/Price/BasePriceTest.php
@@ -106,6 +106,9 @@ public function testGetValue($specialPriceValue, $expectedResult)
         $this->assertSame($expectedResult, $this->basePrice->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function getValueDataProvider()
     {
         return [[77, 77], [0, 0], [false, 99]];
diff --git a/app/code/Magento/Catalog/Test/Unit/Pricing/Price/CustomOptionPriceTest.php b/app/code/Magento/Catalog/Test/Unit/Pricing/Price/CustomOptionPriceTest.php
index 9225a37c3e5b4..e21cad7a32a99 100644
--- a/app/code/Magento/Catalog/Test/Unit/Pricing/Price/CustomOptionPriceTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Pricing/Price/CustomOptionPriceTest.php
@@ -77,6 +77,10 @@ protected function setUp()
         );
     }
 
+    /**
+     * @param array $optionsData
+     * @return array
+     */
     protected function setupOptions(array $optionsData)
     {
         $options = [];
@@ -105,6 +109,10 @@ protected function setupOptions(array $optionsData)
         return $options;
     }
 
+    /**
+     * @param $optionsData
+     * @return array
+     */
     protected function setupSingleValueOptions($optionsData)
     {
         $options = [];
diff --git a/app/code/Magento/Catalog/Test/Unit/Pricing/Price/MinimalTierPriceCalculatorTest.php b/app/code/Magento/Catalog/Test/Unit/Pricing/Price/MinimalTierPriceCalculatorTest.php
index d04bb4c681e67..1c50271976d15 100644
--- a/app/code/Magento/Catalog/Test/Unit/Pricing/Price/MinimalTierPriceCalculatorTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Pricing/Price/MinimalTierPriceCalculatorTest.php
@@ -61,6 +61,9 @@ public function setUp()
         );
     }
 
+    /**
+     * @return int
+     */
     private function getValueTierPricesExistShouldReturnMinTierPrice()
     {
         $minPrice = 5;
diff --git a/app/code/Magento/Catalog/Test/Unit/Pricing/Render/FinalPriceBoxTest.php b/app/code/Magento/Catalog/Test/Unit/Pricing/Render/FinalPriceBoxTest.php
index 90384c122f095..397cd0fb2d165 100644
--- a/app/code/Magento/Catalog/Test/Unit/Pricing/Render/FinalPriceBoxTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Pricing/Render/FinalPriceBoxTest.php
@@ -347,6 +347,9 @@ public function testHasSpecialPrice($regularPrice, $finalPrice, $expectedResult)
         $this->assertEquals($expectedResult, $this->object->hasSpecialPrice());
     }
 
+    /**
+     * @return array
+     */
     public function hasSpecialPriceProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Pricing/Render/PriceBoxTest.php b/app/code/Magento/Catalog/Test/Unit/Pricing/Render/PriceBoxTest.php
index 986a1f7710919..e4d531e91fa07 100644
--- a/app/code/Magento/Catalog/Test/Unit/Pricing/Render/PriceBoxTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Pricing/Render/PriceBoxTest.php
@@ -88,6 +88,9 @@ public function testGetCanDisplayQty($typeCode, $expected)
         $this->assertEquals($expected, $this->object->getCanDisplayQty($product));
     }
 
+    /**
+     * @return array
+     */
     public function getCanDisplayQtyDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Ui/Component/Product/MassActionTest.php b/app/code/Magento/Catalog/Test/Unit/Ui/Component/Product/MassActionTest.php
index 604136bb3ad4b..dcd50d4739d70 100644
--- a/app/code/Magento/Catalog/Test/Unit/Ui/Component/Product/MassActionTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Ui/Component/Product/MassActionTest.php
@@ -222,6 +222,9 @@ public function testIsActionAllowed($expected, $actionType, $callNum, $resource
         $this->assertEquals($expected, $this->massAction->isActionAllowed($actionType));
     }
 
+    /**
+     * @return array
+     */
     public function isActionAllowedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/CatalogEavValidationRulesTest.php b/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/CatalogEavValidationRulesTest.php
index 9b0ade2b1288f..57b277a786ea3 100644
--- a/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/CatalogEavValidationRulesTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/CatalogEavValidationRulesTest.php
@@ -53,6 +53,9 @@ public function testBuild($frontendInput, $frontendClass, array $eavConfig, arra
         $this->assertEquals($expectedResult, $this->catalogEavValidationRules->build($attribute, $eavConfig));
     }
 
+    /**
+     * @return array
+     */
     public function buildDataProvider()
     {
         $data['required'] = true;
diff --git a/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/AttributeSetTest.php b/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/AttributeSetTest.php
index 5fc6231b03735..e36021fc7ebf6 100644
--- a/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/AttributeSetTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/AttributeSetTest.php
@@ -106,6 +106,9 @@ public function testModifyMetaLocked($locked)
         );
     }
 
+    /**
+     * @return array
+     */
     public function modifyMetaLockedDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/CategoriesTest.php b/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/CategoriesTest.php
index 5f5913c20209a..cd6565f32ed18 100644
--- a/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/CategoriesTest.php
+++ b/app/code/Magento/Catalog/Test/Unit/Ui/DataProvider/Product/Form/Modifier/CategoriesTest.php
@@ -147,6 +147,9 @@ public function testModifyMetaLocked($locked)
         $this->assertEquals($locked, $modifyMeta['arguments']['data']['config']['disabled']);
     }
 
+    /**
+     * @return array
+     */
     public function modifyMetaLockedDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/CatalogGraphQl/Model/Resolver/Products/DataProvider/Product/CollectionProcessor/ExtensibleEntityProcessor.php b/app/code/Magento/CatalogGraphQl/Model/Resolver/Products/DataProvider/Product/CollectionProcessor/ExtensibleEntityProcessor.php
index 365d4f018ef4a..e35c8b3e20c51 100644
--- a/app/code/Magento/CatalogGraphQl/Model/Resolver/Products/DataProvider/Product/CollectionProcessor/ExtensibleEntityProcessor.php
+++ b/app/code/Magento/CatalogGraphQl/Model/Resolver/Products/DataProvider/Product/CollectionProcessor/ExtensibleEntityProcessor.php
@@ -32,6 +32,12 @@ public function __construct(JoinProcessorInterface $joinProcessor)
         $this->joinProcessor = $joinProcessor;
     }
 
+    /**
+     * @param Collection $collection
+     * @param SearchCriteriaInterface $searchCriteria
+     * @param array $attributeNames
+     * @return Collection
+     */
     public function process(
         Collection $collection,
         SearchCriteriaInterface $searchCriteria,
diff --git a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/CategoryProcessorTest.php b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/CategoryProcessorTest.php
index 9d13f91aa2c37..69f4a465e3309 100644
--- a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/CategoryProcessorTest.php
+++ b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/CategoryProcessorTest.php
@@ -148,6 +148,9 @@ public function testGetCategoryById($categoriesCache, $expectedResult)
         $this->assertEquals($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function getCategoryByIdDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Type/AbstractTypeTest.php b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Type/AbstractTypeTest.php
index e24b4e1948149..70ac3a4fa2e97 100644
--- a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Type/AbstractTypeTest.php
+++ b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Type/AbstractTypeTest.php
@@ -269,6 +269,9 @@ public function testIsRowValidError()
         $this->assertFalse($this->simpleType->isRowValid($rowData, $rowNum));
     }
 
+    /**
+     * @return array
+     */
     public function addAttributeOptionDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Validator/TierPriceTest.php b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Validator/TierPriceTest.php
index 4e902024769f7..bffefce24e1fd 100644
--- a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Validator/TierPriceTest.php
+++ b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/Product/Validator/TierPriceTest.php
@@ -48,6 +48,10 @@ protected function setUp()
         );
     }
 
+    /**
+     * @param $groupId
+     * @return \Magento\CatalogImportExport\Model\Import\Product\Validator\TierPrice
+     */
     protected function processInit($groupId)
     {
         $searchResult = $this->createMock(\Magento\Customer\Api\Data\GroupSearchResultsInterface::class);
diff --git a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/ProductTest.php b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/ProductTest.php
index 9282c5cb5c02e..aa46886c35c78 100644
--- a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/ProductTest.php
+++ b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/ProductTest.php
@@ -505,6 +505,9 @@ protected function _initSkus()
         return $this;
     }
 
+    /**
+     * @return $this
+     */
     protected function _initImagesArrayKeys()
     {
         $this->imageTypeProcessor->expects($this->once())->method('getImageTypes')->willReturn(
@@ -808,6 +811,9 @@ public function testGetCategoryProcessor()
         $this->assertEquals($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function getStoreIdByCodeDataProvider()
     {
         return [
@@ -1252,6 +1258,9 @@ public function uploadMediaFilesDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function getImagesFromRowDataProvider()
     {
         return [
@@ -1278,6 +1287,9 @@ public function getImagesFromRowDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function validateRowValidateNewProductTypeAddRowErrorCallDataProvider()
     {
         return [
@@ -1312,6 +1324,9 @@ public function validateRowValidateNewProductTypeAddRowErrorCallDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function validateRowCheckSpecifiedSkuDataProvider()
     {
         return [
@@ -1330,6 +1345,9 @@ public function validateRowCheckSpecifiedSkuDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function validateRowDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/UploaderTest.php b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/UploaderTest.php
index f6a211bc47c62..ed95d5a0212c9 100644
--- a/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/UploaderTest.php
+++ b/app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/UploaderTest.php
@@ -193,6 +193,9 @@ public function testMoveFileUrlDrivePool($fileUrl, $expectedHost, $expectedDrive
         $this->assertNull($result);
     }
 
+    /**
+     * @return array
+     */
     public function moveFileUrlDriverPoolDataProvider()
     {
         return [
@@ -211,6 +214,9 @@ public function moveFileUrlDriverPoolDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function moveFileUrlDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Helper/StockTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Helper/StockTest.php
index 2fe40c118b06a..bd04df0da0a4a 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Helper/StockTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Helper/StockTest.php
@@ -167,6 +167,9 @@ public function testAddInStockFilterToCollection($configMock)
         $this->assertNull($this->stock->addInStockFilterToCollection($collectionMock));
     }
 
+    /**
+     * @return array
+     */
     public function filterProvider()
     {
         $configMock = $this->getMockBuilder(\Magento\Framework\App\Config::class)
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Model/Plugin/ProductLinksTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Model/Plugin/ProductLinksTest.php
index ea562da2f01c0..3788b1bc401fe 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Model/Plugin/ProductLinksTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Model/Plugin/ProductLinksTest.php
@@ -48,6 +48,9 @@ public function testAfterGetProductCollectionShow($status, $callCount)
         $this->assertEquals($collectionMock, $this->model->afterGetProductCollection($subjectMock, $collectionMock));
     }
 
+    /**
+     * @return array
+     */
     private function buildMocks()
     {
         /** @var \Magento\Catalog\Model\ResourceModel\Product\Link\Product\Collection $collectionMock */
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Model/Quote/Item/QuantityValidator/Initializer/QuantityValidatorTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Model/Quote/Item/QuantityValidator/Initializer/QuantityValidatorTest.php
index 11a04d26994ae..7e2bad0b96354 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Model/Quote/Item/QuantityValidator/Initializer/QuantityValidatorTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Model/Quote/Item/QuantityValidator/Initializer/QuantityValidatorTest.php
@@ -450,6 +450,10 @@ public function testException()
         $this->quantityValidator->validate($this->observerMock);
     }
 
+    /**
+     * @param $qty
+     * @param $hasError
+     */
     private function setUpStubForQuantity($qty, $hasError)
     {
         $this->productMock->expects($this->any())
@@ -480,6 +484,9 @@ private function setUpStubForQuantity($qty, $hasError)
             ->willReturn('');
     }
 
+    /**
+     * @param $qty
+     */
     private function createInitialStub($qty)
     {
         $this->storeMock->expects($this->any())
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Model/Spi/StockStateProviderTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Model/Spi/StockStateProviderTest.php
index 5c75249b7cbf8..aad24cbeb7ac1 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Model/Spi/StockStateProviderTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Model/Spi/StockStateProviderTest.php
@@ -243,41 +243,66 @@ public function testCheckQuoteItemQty(StockItemInterface $stockItem, $expectedRe
         );
     }
 
+    /**
+     * @return array
+     */
     public function verifyStockDataProvider()
     {
         return $this->prepareDataForMethod('verifyStock');
     }
 
+    /**
+     * @return array
+     */
     public function verifyNotificationDataProvider()
     {
         return $this->prepareDataForMethod('verifyNotification');
     }
 
+    /**
+     * @return array
+     */
     public function checkQtyDataProvider()
     {
         return $this->prepareDataForMethod('checkQty');
     }
 
+    /**
+     * @return array
+     */
     public function suggestQtyDataProvider()
     {
         return $this->prepareDataForMethod('suggestQty');
     }
 
+    /**
+     * @return array
+     */
     public function getStockQtyDataProvider()
     {
         return $this->prepareDataForMethod('getStockQty');
     }
 
+    /**
+     * @return array
+     */
     public function checkQtyIncrementsDataProvider()
     {
         return $this->prepareDataForMethod('checkQtyIncrements');
     }
 
+    /**
+     * @return array
+     */
     public function checkQuoteItemQtyDataProvider()
     {
         return $this->prepareDataForMethod('checkQuoteItemQty');
     }
 
+    /**
+     * @param $methodName
+     * @return array
+     */
     protected function prepareDataForMethod($methodName)
     {
         $variations = [];
@@ -318,6 +343,9 @@ protected function prepareDataForMethod($methodName)
         return $variations;
     }
 
+    /**
+     * @return array
+     */
     protected function getVariations()
     {
         $stockQty = 100;
@@ -430,6 +458,9 @@ public function testCheckQtyIncrementsMsg($isChildItem, $expectedMsg)
         $this->assertEquals($expectedMsg, $result->getMessage()->render());
     }
 
+    /**
+     * @return array
+     */
     public function checkQtyIncrementsMsgDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Model/Stock/ItemTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Model/Stock/ItemTest.php
index e63a573b2f3a4..3dc5992c3ec37 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Model/Stock/ItemTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Model/Stock/ItemTest.php
@@ -491,6 +491,9 @@ public function testDispatchEvents($eventName, $methodName, $objectName)
         );
     }
 
+    /**
+     * @return array
+     */
     public function eventsDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Model/StockTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Model/StockTest.php
index c3abad50ef9f4..9ecab4dca77e3 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Model/StockTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Model/StockTest.php
@@ -125,7 +125,10 @@ public function testDispatchEvents($eventName, $methodName, $objectName)
             sprintf('Event "%s" with object name "%s" doesn\'t dispatched properly', $eventName, $objectName)
         );
     }
-    
+
+    /**
+     * @return array
+     */
     public function eventsDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogInventory/Test/Unit/Ui/Component/Product/Form/Element/UseConfigSettingsTest.php b/app/code/Magento/CatalogInventory/Test/Unit/Ui/Component/Product/Form/Element/UseConfigSettingsTest.php
index db183ae5c0da0..0ce62133d6f9b 100644
--- a/app/code/Magento/CatalogInventory/Test/Unit/Ui/Component/Product/Form/Element/UseConfigSettingsTest.php
+++ b/app/code/Magento/CatalogInventory/Test/Unit/Ui/Component/Product/Form/Element/UseConfigSettingsTest.php
@@ -106,6 +106,9 @@ public function testPrepareSource(
         $this->assertEquals($expectedResult, $this->useConfigSettings->getData('config'));
     }
 
+    /**
+     * @return array
+     */
     public function prepareSourceDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogRule/Test/Unit/Model/Product/PriceModifierTest.php b/app/code/Magento/CatalogRule/Test/Unit/Model/Product/PriceModifierTest.php
index b1e27bf973404..ccc86920a7e74 100644
--- a/app/code/Magento/CatalogRule/Test/Unit/Model/Product/PriceModifierTest.php
+++ b/app/code/Magento/CatalogRule/Test/Unit/Model/Product/PriceModifierTest.php
@@ -56,6 +56,9 @@ public function testModifyPriceIfPriceExists($resultPrice, $expectedPrice)
         $this->assertEquals($expectedPrice, $this->priceModifier->modifyPrice(100, $this->productMock));
     }
 
+    /**
+     * @return array
+     */
     public function modifyPriceDataProvider()
     {
         return ['resulted_price_exists' => [150, 150], 'resulted_price_not_exists' => [null, 100]];
diff --git a/app/code/Magento/CatalogRule/Test/Unit/Model/Rule/Condition/MappableConditionProcessorTest.php b/app/code/Magento/CatalogRule/Test/Unit/Model/Rule/Condition/MappableConditionProcessorTest.php
index e28c443e46fed..87f959214a8fb 100644
--- a/app/code/Magento/CatalogRule/Test/Unit/Model/Rule/Condition/MappableConditionProcessorTest.php
+++ b/app/code/Magento/CatalogRule/Test/Unit/Model/Rule/Condition/MappableConditionProcessorTest.php
@@ -1008,6 +1008,11 @@ public function testException()
         $this->mappableConditionProcessor->rebuildConditionsTree($inputCondition);
     }
 
+    /**
+     * @param $subConditions
+     * @param $aggregator
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getMockForCombinedCondition($subConditions, $aggregator)
     {
         $mock = $this->getMockBuilder(CombinedCondition::class)
@@ -1022,6 +1027,10 @@ protected function getMockForCombinedCondition($subConditions, $aggregator)
         return $mock;
     }
 
+    /**
+     * @param $attribute
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getMockForSimpleCondition($attribute)
     {
         $mock = $this->getMockBuilder(SimpleCondition::class)
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Adapter/Mysql/Filter/PreprocessorTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Adapter/Mysql/Filter/PreprocessorTest.php
index f4c512916465f..01108358da2e0 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Adapter/Mysql/Filter/PreprocessorTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Adapter/Mysql/Filter/PreprocessorTest.php
@@ -314,6 +314,9 @@ public function testProcessTermFilter($frontendInput, $fieldValue, $isNegation,
         $this->assertSame($expected, $this->removeWhitespaces($actualResult));
     }
 
+    /**
+     * @return array
+     */
     public function testTermFilterDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/AdvancedTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/AdvancedTest.php
index ac3e84a5c8fef..fc5915bb3cdff 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/AdvancedTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/AdvancedTest.php
@@ -99,6 +99,9 @@ protected function setUp()
             ->willReturn($this->store);
     }
 
+    /**
+     * @return array
+     */
     public function addFiltersDataProvider()
     {
         return array_merge(
@@ -269,6 +272,10 @@ private function createBackend($table)
         return $backend;
     }
 
+    /**
+     * @param string $optionText
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function createSource($optionText = 'optionText')
     {
         $source = $this->getMockBuilder(\Magento\Eav\Model\Entity\Attribute\Source\AbstractSource::class)
@@ -281,6 +288,9 @@ private function createSource($optionText = 'optionText')
         return $source;
     }
 
+    /**
+     * @return array
+     */
     private function addFiltersPriceDataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Autocomplete/DataProviderTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Autocomplete/DataProviderTest.php
index bb8fc848bb2b7..91d1d773172b6 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Autocomplete/DataProviderTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Autocomplete/DataProviderTest.php
@@ -123,6 +123,9 @@ public function testGetItems()
         $this->assertEquals($this->limit, count($result));
     }
 
+    /**
+     * @param array $data
+     */
     private function buildCollection(array $data)
     {
         $collectionData = [];
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Indexer/FulltextTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Indexer/FulltextTest.php
index f2cacd74fddfb..0c3bd42a1b5eb 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Indexer/FulltextTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Indexer/FulltextTest.php
@@ -119,6 +119,9 @@ function ($store) use ($ids) {
         $this->model->execute($ids);
     }
 
+    /**
+     * @param $stores
+     */
     private function setupDataProvider($stores)
     {
         $this->dimensionProviderMock->expects($this->once())->method('getIterator')->willReturn(
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/ResourceModel/Fulltext/CollectionTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/ResourceModel/Fulltext/CollectionTest.php
index c0f1f3fcaa5e6..a3b1d2fd0f2b6 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/ResourceModel/Fulltext/CollectionTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/ResourceModel/Fulltext/CollectionTest.php
@@ -206,6 +206,11 @@ protected function getFilterBuilder()
         return $filterBuilder;
     }
 
+    /**
+     * @param MockObject $filterBuilder
+     * @param array $filters
+     * @return MockObject
+     */
     protected function addFiltersToFilterBuilder(MockObject $filterBuilder, array $filters)
     {
         $i = 1;
@@ -222,6 +227,9 @@ protected function addFiltersToFilterBuilder(MockObject $filterBuilder, array $f
         return $filterBuilder;
     }
 
+    /**
+     * @return MockObject
+     */
     protected function createFilter()
     {
         $filter = $this->getMockBuilder(\Magento\Framework\Api\Filter::class)
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/BaseSelectStrategy/StrategyMapperTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/BaseSelectStrategy/StrategyMapperTest.php
index 1ff1131e5f002..5fa5b0333c6ba 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/BaseSelectStrategy/StrategyMapperTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/BaseSelectStrategy/StrategyMapperTest.php
@@ -91,6 +91,9 @@ public function testBaseSelectFullTextSearchStrategy(
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/CustomAttributeFilterCheckTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/CustomAttributeFilterCheckTest.php
index 2022492ed1c86..175407bda677f 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/CustomAttributeFilterCheckTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/CustomAttributeFilterCheckTest.php
@@ -78,6 +78,9 @@ public function testIsCustomPositive($attributeFrontEndType)
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForIsCustomPositive()
     {
         return [
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/Indexer/IndexStructureTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/Indexer/IndexStructureTest.php
index c393f91f21fe1..ee16a22ff9f36 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/Indexer/IndexStructureTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/Indexer/IndexStructureTest.php
@@ -120,6 +120,12 @@ private function createDimensionMock($name, $value)
         return $dimension;
     }
 
+    /**
+     * @param $callNumber
+     * @param $tableName
+     * @param $isTableExist
+     * @return mixed
+     */
     private function mockDropTable($callNumber, $tableName, $isTableExist)
     {
         $this->connection->expects($this->at($callNumber++))
@@ -135,6 +141,11 @@ private function mockDropTable($callNumber, $tableName, $isTableExist)
         return $callNumber;
     }
 
+    /**
+     * @param $callNumber
+     * @param $tableName
+     * @return mixed
+     */
     private function mockFulltextTable($callNumber, $tableName)
     {
         $table = $this->getMockBuilder(\Magento\Framework\DB\Ddl\Table::class)
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/QueryChecker/FullTextSearchCheckTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/QueryChecker/FullTextSearchCheckTest.php
index bb6e4ab8b4281..d13dcc11628f2 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/QueryChecker/FullTextSearchCheckTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/QueryChecker/FullTextSearchCheckTest.php
@@ -78,6 +78,9 @@ public function testInvalidArgumentException2()
         $this->fullTextSearchCheck->isRequiredForQuery($filterMock);
     }
 
+    /**
+     * @return array
+     */
     public function positiveDataProvider()
     {
         $boolQueryMock = $this->getBoolQueryMock();
@@ -114,6 +117,9 @@ public function positiveDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function negativeDataProvider()
     {
         $emptyBoolQueryMock = $this->getBoolQueryMock();
@@ -147,6 +153,9 @@ public function negativeDataProvider()
         ];
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getMatchQueryMock()
     {
         $matchQueryMock = $this->getMockBuilder(\Magento\Framework\Search\Request\QueryInterface::class)
@@ -161,6 +170,9 @@ private function getMatchQueryMock()
         return $matchQueryMock;
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getBoolQueryMock()
     {
         $boolQueryMock = $this->getMockBuilder(\Magento\Framework\Search\Request\Query\BoolExpression::class)
@@ -175,6 +187,9 @@ private function getBoolQueryMock()
         return $boolQueryMock;
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getFilterQueryMock()
     {
         $filterQueryMock = $this->getMockBuilder(\Magento\Framework\Search\Request\Query\Filter::class)
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/RequestGeneratorTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/RequestGeneratorTest.php
index 259c8e5d7f897..b52c9cfd67494 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/RequestGeneratorTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/RequestGeneratorTest.php
@@ -239,6 +239,10 @@ private function createAttributeMock($attributeOptions)
         return $attribute;
     }
 
+    /**
+     * @param $value
+     * @return int|void
+     */
     private function countVal(&$value)
     {
         return !empty($value) ? count($value) : 0;
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/SelectContainer/SelectContainerBuilderTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/SelectContainer/SelectContainerBuilderTest.php
index ef4d8d314825b..374d0390f937c 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/SelectContainer/SelectContainerBuilderTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/SelectContainer/SelectContainerBuilderTest.php
@@ -190,6 +190,9 @@ public function testBuildByRequest()
         );
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function mockQuery()
     {
         return $this->getMockBuilder(QueryInterface::class)
@@ -197,6 +200,9 @@ private function mockQuery()
             ->getMockForAbstractClass();
     }
 
+    /**
+     * @return array
+     */
     private function mockFilters()
     {
         $visibilityFilter = $this->getMockBuilder(Term::class)
diff --git a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/TableMapperTest.php b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/TableMapperTest.php
index 1521b38d8c298..cfddc07bceecc 100644
--- a/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/TableMapperTest.php
+++ b/app/code/Magento/CatalogSearch/Test/Unit/Model/Search/TableMapperTest.php
@@ -275,6 +275,9 @@ function (FilterInterface $filter) {
         $this->tableMapper->addTables($select, $request);
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getSelectMock()
     {
         return $this->getMockBuilder(\Magento\Framework\DB\Select::class)
@@ -282,6 +285,9 @@ private function getSelectMock()
             ->getMock();
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getRequestMock()
     {
         return $this->getMockBuilder(\Magento\Framework\Search\RequestInterface::class)
@@ -289,6 +295,9 @@ private function getRequestMock()
             ->getMock();
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getQueryMock()
     {
         return $this->getMockBuilder(QueryInterface::class)
@@ -296,6 +305,9 @@ private function getQueryMock()
             ->getMockForAbstractClass();
     }
 
+    /**
+     * @return array
+     */
     private function getDifferentFiltersMock()
     {
         $visibilityFilter = $this->getMockBuilder(Term::class)
@@ -316,6 +328,9 @@ private function getDifferentFiltersMock()
         return [$visibilityFilter, $customFilter, $nonCustomFilter];
     }
 
+    /**
+     * @return array
+     */
     private function getSameFiltersMock()
     {
         $visibilityFilter1 = $this->getMockBuilder(Term::class)
diff --git a/app/code/Magento/CatalogUrlRewrite/Test/Unit/Ui/DataProvider/Product/Form/Modifier/ProductUrlRewriteTest.php b/app/code/Magento/CatalogUrlRewrite/Test/Unit/Ui/DataProvider/Product/Form/Modifier/ProductUrlRewriteTest.php
index 763f78ac1fea6..40f7642f35383 100644
--- a/app/code/Magento/CatalogUrlRewrite/Test/Unit/Ui/DataProvider/Product/Form/Modifier/ProductUrlRewriteTest.php
+++ b/app/code/Magento/CatalogUrlRewrite/Test/Unit/Ui/DataProvider/Product/Form/Modifier/ProductUrlRewriteTest.php
@@ -27,6 +27,9 @@ protected function setUp()
             ->getMockForAbstractClass();
     }
 
+    /**
+     * @return \Magento\Ui\DataProvider\Modifier\ModifierInterface|object
+     */
     protected function createModel()
     {
         return $this->objectManager->getObject(ProductUrlRewrite::class, [
diff --git a/app/code/Magento/CatalogWidget/Test/Unit/Block/Product/ProductsListTest.php b/app/code/Magento/CatalogWidget/Test/Unit/Block/Product/ProductsListTest.php
index 3039066ad1388..5de8b9d9632fc 100644
--- a/app/code/Magento/CatalogWidget/Test/Unit/Block/Product/ProductsListTest.php
+++ b/app/code/Magento/CatalogWidget/Test/Unit/Block/Product/ProductsListTest.php
@@ -316,6 +316,9 @@ public function testCreateCollection($pagerEnable, $productsCount, $productsPerP
         $this->assertSame($collection, $this->productsList->createCollection());
     }
 
+    /**
+     * @return array
+     */
     public function createCollectionDataProvider()
     {
         return [
diff --git a/app/code/Magento/Checkout/Test/Unit/Block/Cart/AbstractCartTest.php b/app/code/Magento/Checkout/Test/Unit/Block/Cart/AbstractCartTest.php
index aecaf0ec9f039..1a9c5555c91c0 100644
--- a/app/code/Magento/Checkout/Test/Unit/Block/Cart/AbstractCartTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Block/Cart/AbstractCartTest.php
@@ -124,6 +124,9 @@ public function testGetTotalsCache($expectedResult, $isVirtual)
         $this->assertEquals($expectedResult, $model->getTotalsCache());
     }
 
+    /**
+     * @return array
+     */
     public function getTotalsCacheDataProvider()
     {
         return [
diff --git a/app/code/Magento/Checkout/Test/Unit/Block/Cart/LinkTest.php b/app/code/Magento/Checkout/Test/Unit/Block/Cart/LinkTest.php
index 2478270e0aec6..417c1e4295ea1 100644
--- a/app/code/Magento/Checkout/Test/Unit/Block/Cart/LinkTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Block/Cart/LinkTest.php
@@ -82,6 +82,9 @@ public function testGetLabel($productCount, $label)
         $this->assertSame($label, (string)$block->getLabel());
     }
 
+    /**
+     * @return array
+     */
     public function getLabelDataProvider()
     {
         return [[1, 'My Cart (1 item)'], [2, 'My Cart (2 items)'], [0, 'My Cart']];
diff --git a/app/code/Magento/Checkout/Test/Unit/Block/LinkTest.php b/app/code/Magento/Checkout/Test/Unit/Block/LinkTest.php
index 24065c1f54eb3..7db5d7ecb19fd 100644
--- a/app/code/Magento/Checkout/Test/Unit/Block/LinkTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Block/LinkTest.php
@@ -68,6 +68,9 @@ public function testToHtml($canOnepageCheckout, $isOutputEnabled)
         $this->assertEquals('', $block->toHtml());
     }
 
+    /**
+     * @return array
+     */
     public function toHtmlDataProvider()
     {
         return [[false, true], [true, false], [false, false]];
diff --git a/app/code/Magento/Checkout/Test/Unit/Block/Onepage/SuccessTest.php b/app/code/Magento/Checkout/Test/Unit/Block/Onepage/SuccessTest.php
index 18281494029b6..36d37d07ef752 100644
--- a/app/code/Magento/Checkout/Test/Unit/Block/Onepage/SuccessTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Block/Onepage/SuccessTest.php
@@ -153,6 +153,9 @@ public function testToHtmlOrderVisibleOnFront(array $invisibleStatuses, $expecte
         $this->assertEquals($expectedResult, $this->block->getIsOrderVisible());
     }
 
+    /**
+     * @return array
+     */
     public function invisibleStatusesProvider()
     {
         return [
diff --git a/app/code/Magento/Checkout/Test/Unit/Controller/Stub/OnepageStub.php b/app/code/Magento/Checkout/Test/Unit/Controller/Stub/OnepageStub.php
index 26771c1531267..1a8fecd8356bb 100644
--- a/app/code/Magento/Checkout/Test/Unit/Controller/Stub/OnepageStub.php
+++ b/app/code/Magento/Checkout/Test/Unit/Controller/Stub/OnepageStub.php
@@ -8,6 +8,9 @@
 
 class OnepageStub extends \Magento\Checkout\Controller\Onepage
 {
+    /**
+     * @return \Magento\Framework\App\ResponseInterface|\Magento\Framework\Controller\ResultInterface|void
+     */
     public function execute()
     {
         // Empty method stub for test
diff --git a/app/code/Magento/Checkout/Test/Unit/Model/CartTest.php b/app/code/Magento/Checkout/Test/Unit/Model/CartTest.php
index 40de71e28c05e..6bd0bdf258a0a 100644
--- a/app/code/Magento/Checkout/Test/Unit/Model/CartTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Model/CartTest.php
@@ -279,6 +279,9 @@ public function testGetSummaryQty($useQty)
         $this->assertEquals($itemsCount, $this->cart->getSummaryQty());
     }
 
+    /**
+     * @return array
+     */
     public function useQtyDataProvider()
     {
         return [
diff --git a/app/code/Magento/Checkout/Test/Unit/Model/Session/SuccessValidatorTest.php b/app/code/Magento/Checkout/Test/Unit/Model/Session/SuccessValidatorTest.php
index fec1d6d4d003f..ced6faa00fabe 100644
--- a/app/code/Magento/Checkout/Test/Unit/Model/Session/SuccessValidatorTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Model/Session/SuccessValidatorTest.php
@@ -90,6 +90,10 @@ public function testIsValidTrue()
         $this->assertTrue($this->createSuccessValidator($checkoutSession)->isValid($checkoutSession));
     }
 
+    /**
+     * @param \PHPUnit_Framework_MockObject_MockObject $checkoutSession
+     * @return object
+     */
     protected function createSuccessValidator(\PHPUnit_Framework_MockObject_MockObject $checkoutSession)
     {
         return $this->objectManagerHelper->getObject(
diff --git a/app/code/Magento/Checkout/Test/Unit/Model/SidebarTest.php b/app/code/Magento/Checkout/Test/Unit/Model/SidebarTest.php
index c07413c8611d0..a196b10478c7f 100644
--- a/app/code/Magento/Checkout/Test/Unit/Model/SidebarTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Model/SidebarTest.php
@@ -46,6 +46,9 @@ public function testGetResponseData($error, $result)
         $this->assertEquals($result, $this->sidebar->getResponseData($error));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderGetResponseData()
     {
         return [
diff --git a/app/code/Magento/Checkout/Test/Unit/Model/Type/OnepageTest.php b/app/code/Magento/Checkout/Test/Unit/Model/Type/OnepageTest.php
index 48b6a535ae9c1..eb6a5623d9df9 100644
--- a/app/code/Magento/Checkout/Test/Unit/Model/Type/OnepageTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Model/Type/OnepageTest.php
@@ -271,6 +271,9 @@ public function testInitCheckout($stepData, $isLoggedIn, $isSetStepDataCalled)
         $this->onepage->initCheckout();
     }
 
+    /**
+     * @return array
+     */
     public function initCheckoutDataProvider()
     {
         return [
@@ -303,6 +306,9 @@ public function testGetCheckoutMethod($isLoggedIn, $quoteCheckoutMethod, $isAllo
         $this->assertEquals($expected, $this->onepage->getCheckoutMethod());
     }
 
+    /**
+     * @return array
+     */
     public function getCheckoutMethodDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Block/Widget/ChooserTest.php b/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Block/Widget/ChooserTest.php
index 97988a5676842..a27110ca96b6d 100644
--- a/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Block/Widget/ChooserTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Block/Widget/ChooserTest.php
@@ -233,6 +233,9 @@ public function testPrepareElementHtml($elementValue, $modelBlockId)
         $this->assertEquals($this->elementMock, $this->this->prepareElementHtml($this->elementMock));
     }
 
+    /**
+     * @return array
+     */
     public function prepareElementHtmlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Page/Widget/ChooserTest.php b/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Page/Widget/ChooserTest.php
index 174e3a68b7c66..7b91d54ec3aa1 100644
--- a/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Page/Widget/ChooserTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Block/Adminhtml/Page/Widget/ChooserTest.php
@@ -236,6 +236,9 @@ public function testPrepareElementHtml($elementValue, $cmsPageId)
         $this->assertEquals($this->elementMock, $this->this->prepareElementHtml($this->elementMock));
     }
 
+    /**
+     * @return array
+     */
     public function prepareElementHtmlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Helper/PageTest.php b/app/code/Magento/Cms/Test/Unit/Helper/PageTest.php
index 8b41f0e3ac0d4..c50f33caa6bc2 100644
--- a/app/code/Magento/Cms/Test/Unit/Helper/PageTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Helper/PageTest.php
@@ -367,6 +367,9 @@ public function testPrepareResultPage(
         );
     }
 
+    /**
+     * @return array
+     */
     public function renderPageExtendedDataProvider()
     {
         return [
@@ -467,6 +470,9 @@ public function testGetPageUrl(
         $this->assertEquals($expectedResult, $this->object->getPageUrl($pageId));
     }
 
+    /**
+     * @return array
+     */
     public function getPageUrlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Helper/Wysiwyg/ImagesTest.php b/app/code/Magento/Cms/Test/Unit/Helper/Wysiwyg/ImagesTest.php
index 0c2c62ac62191..d13b4f47a85e7 100644
--- a/app/code/Magento/Cms/Test/Unit/Helper/Wysiwyg/ImagesTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Helper/Wysiwyg/ImagesTest.php
@@ -396,6 +396,9 @@ public function testGetCurrentPathThrowException()
         $this->fail('An expected exception has not been raised.');
     }
 
+    /**
+     * @return array
+     */
     public function providerGetCurrentPath()
     {
         return [
@@ -449,6 +452,9 @@ public function testGetImageHtmlDeclarationRenderingAsTag(
         $this->assertEquals($expectedHtml, $this->imagesHelper->getImageHtmlDeclaration($fileName, true));
     }
 
+    /**
+     * @return array
+     */
     public function providerGetImageHtmlDeclarationRenderingAsTag()
     {
         return [
@@ -495,6 +501,9 @@ public function testGetImageHtmlDeclaration($baseUrl, $fileName, $isUsingStaticU
         $this->assertEquals($expectedHtml, $this->imagesHelper->getImageHtmlDeclaration($fileName));
     }
 
+    /**
+     * @return array
+     */
     public function providerGetImageHtmlDeclaration()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Block/CollectionTest.php b/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Block/CollectionTest.php
index b9b0d6f772c62..26b5d74ffb961 100644
--- a/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Block/CollectionTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Block/CollectionTest.php
@@ -119,6 +119,9 @@ public function testAfterLoad($item, $storesData)
         $this->assertEquals($expectedResult[$item->getId()], $item->getStoreId());
     }
 
+    /**
+     * @return array
+     */
     public function getItemsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Page/CollectionTest.php b/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Page/CollectionTest.php
index dd31650cb3a3a..6d45e7bf6ab1d 100644
--- a/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Page/CollectionTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Model/ResourceModel/Page/CollectionTest.php
@@ -119,6 +119,9 @@ public function testAfterLoad($item, $storesData)
         $this->assertEquals($expectedResult[$item->getId()], $item->getStoreId());
     }
 
+    /**
+     * @return array
+     */
     public function getItemsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Model/Wysiwyg/ConfigTest.php b/app/code/Magento/Cms/Test/Unit/Model/Wysiwyg/ConfigTest.php
index 5ad9cc13b2c7d..b7825ce49c20f 100644
--- a/app/code/Magento/Cms/Test/Unit/Model/Wysiwyg/ConfigTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Model/Wysiwyg/ConfigTest.php
@@ -199,6 +199,9 @@ public function testGetConfig($data, $isAuthorizationAllowed, $expectedResults)
         $this->assertEquals('localhost/pub/static/', $config->getData('baseStaticDefaultUrl'));
     }
 
+    /**
+     * @return array
+     */
     public function getConfigDataProvider()
     {
         return [
diff --git a/app/code/Magento/Cms/Test/Unit/Observer/NoCookiesObserverTest.php b/app/code/Magento/Cms/Test/Unit/Observer/NoCookiesObserverTest.php
index 8c09d42ec556e..cbb13c6f254eb 100644
--- a/app/code/Magento/Cms/Test/Unit/Observer/NoCookiesObserverTest.php
+++ b/app/code/Magento/Cms/Test/Unit/Observer/NoCookiesObserverTest.php
@@ -139,6 +139,9 @@ public function testNoCookies($pageUrl)
         $this->assertEquals($this->noCookiesObserver, $this->noCookiesObserver->execute($this->observerMock));
     }
 
+    /**
+     * @return array
+     */
     public function noCookiesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Block/System/Config/DwstreeTest.php b/app/code/Magento/Config/Test/Unit/Block/System/Config/DwstreeTest.php
index d3750022d93de..1cb393b212199 100644
--- a/app/code/Magento/Config/Test/Unit/Block/System/Config/DwstreeTest.php
+++ b/app/code/Magento/Config/Test/Unit/Block/System/Config/DwstreeTest.php
@@ -121,6 +121,9 @@ public function testInitTabs($section, $website, $store)
         );
     }
 
+    /**
+     * @return array
+     */
     public function initTabsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Field/Select/AllowspecificTest.php b/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Field/Select/AllowspecificTest.php
index be3b8e2ead0c1..f5c65e848b3bf 100644
--- a/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Field/Select/AllowspecificTest.php
+++ b/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Field/Select/AllowspecificTest.php
@@ -85,6 +85,9 @@ public function testGetHtmlWhenValueIsEmpty($value)
         $this->assertNotEmpty($this->_object->getHtml());
     }
 
+    /**
+     * @return array
+     */
     public function getHtmlWhenValueIsEmptyDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Fieldset/Modules/DisableOutputTest.php b/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Fieldset/Modules/DisableOutputTest.php
index 9d76363213d0b..bb109bcb25f06 100644
--- a/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Fieldset/Modules/DisableOutputTest.php
+++ b/app/code/Magento/Config/Test/Unit/Block/System/Config/Form/Fieldset/Modules/DisableOutputTest.php
@@ -224,6 +224,9 @@ public function testRender($expanded, $nested, $extra)
         }
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Block/System/Config/FormTest.php b/app/code/Magento/Config/Test/Unit/Block/System/Config/FormTest.php
index 804965e41b148..93650dd62657c 100644
--- a/app/code/Magento/Config/Test/Unit/Block/System/Config/FormTest.php
+++ b/app/code/Magento/Config/Test/Unit/Block/System/Config/FormTest.php
@@ -227,6 +227,9 @@ public function testInitForm($sectionIsVisible)
         $this->assertEquals($this->_formMock, $object->getForm());
     }
 
+    /**
+     * @return array
+     */
     public function initFormDataProvider()
     {
         return [
@@ -340,6 +343,9 @@ public function testInitGroup($shouldCloneFields, $prefixes, $callNum)
         $object->initForm();
     }
 
+    /**
+     * @return array
+     */
     public function initGroupDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/AddressTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/AddressTest.php
index bacbda537fb1d..e6b774db041c3 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/AddressTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/AddressTest.php
@@ -40,6 +40,9 @@ public function testBeforeSave($value, $expectedValue)
         $this->assertEquals($expectedValue, $this->model->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function beforeSaveDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/SenderTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/SenderTest.php
index 8e559ff8284ed..e38c247c3861a 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/SenderTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Backend/Email/SenderTest.php
@@ -41,6 +41,9 @@ public function testBeforeSave($value, $expectedValue)
         $this->assertEquals($expectedValue, $this->model->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function beforeSaveDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Backend/SerializedTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Backend/SerializedTest.php
index 493fdf9505c4c..bb1e0e0225901 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Backend/SerializedTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Backend/SerializedTest.php
@@ -52,6 +52,9 @@ public function testAfterLoad($expected, $value, $numCalls, $unserializedValue =
         $this->assertEquals($expected, $this->serializedConfig->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function afterLoadDataProvider()
     {
         return [
@@ -87,6 +90,9 @@ public function testBeforeSave($expected, $value, $numCalls, $serializedValue =
         $this->assertEquals($expected, $this->serializedConfig->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function beforeSaveDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/AbstractElementTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/AbstractElementTest.php
index 51432366bb441..e602e0407feff 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/AbstractElementTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/AbstractElementTest.php
@@ -141,6 +141,9 @@ public function testIsVisibleReturnsTrueForProperScopes($settings, $scope)
         $this->assertTrue($this->_model->isVisible());
     }
 
+    /**
+     * @return array
+     */
     public function isVisibleReturnsTrueForProperScopesDataProvider()
     {
         return [
@@ -170,6 +173,9 @@ public function testIsVisibleReturnsFalseForNonProperScopes($settings, $scope)
         $this->assertFalse($this->_model->isVisible());
     }
 
+    /**
+     * @return array
+     */
     public function isVisibleReturnsFalseForNonProperScopesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/FieldTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/FieldTest.php
index 30c567fb490e6..750a829eef7ec 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/FieldTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/FieldTest.php
@@ -88,6 +88,9 @@ public function testIsNegative($data, $isNegative)
         $this->assertEquals($isNegative, $this->_getFieldObject($data, $isNegative)->isNegative());
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
@@ -110,6 +113,9 @@ public function testIsValueSatisfy($data, $isNegative, $value, $expected)
         $this->assertEquals($expected, $this->_getFieldObject($data, $isNegative)->isValueSatisfy($value));
     }
 
+    /**
+     * @return array
+     */
     public function isValueSatisfyDataProvider()
     {
         return [
@@ -135,6 +141,9 @@ public function testGetValues($data, $isNegative, $expected)
         $this->assertEquals($expected, $this->_getFieldObject($data, $isNegative)->getValues());
     }
 
+    /**
+     * @return array
+     */
     public function getValuesDataProvider()
     {
         $complexDataValues = [self::COMPLEX_VALUE1, self::COMPLEX_VALUE2, self::COMPLEX_VALUE3];
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/MapperTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/MapperTest.php
index 2f081ea4285b9..c6cd03cf8f35b 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/MapperTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/Dependency/MapperTest.php
@@ -150,6 +150,9 @@ public function testGetDependenciesWhenDependentIsInvisible($isValueSatisfy)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function getDependenciesDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/IteratorTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/IteratorTest.php
index 1a0f3d03b060c..dcb7a90e55290 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/IteratorTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Element/IteratorTest.php
@@ -68,6 +68,9 @@ public function testIsLast($elementId, $result)
         $this->assertEquals($result, $this->_model->isLast($elementMock));
     }
 
+    /**
+     * @return array
+     */
     public function isLastDataProvider()
     {
         return [[1, false], [2, false], [3, true]];
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/ExtendsTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/ExtendsTest.php
index df20db4a1d92a..dde19c801f4de 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/ExtendsTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/ExtendsTest.php
@@ -42,6 +42,9 @@ public function testMapWithBadPath()
         $this->_sut->map($sourceData);
     }
 
+    /**
+     * @return array
+     */
     public function mapDataProvider()
     {
         return [
@@ -53,6 +56,9 @@ public function mapDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     protected function _emptySectionsNodeData()
     {
         $data = ['config' => ['system' => ['sections' => 'some_non_array']]];
@@ -60,6 +66,9 @@ protected function _emptySectionsNodeData()
         return [$data, $data];
     }
 
+    /**
+     * @return array
+     */
     protected function _extendFromASiblingData()
     {
         $source = $result = [
@@ -79,6 +88,9 @@ protected function _extendFromASiblingData()
         return [$source, $result];
     }
 
+    /**
+     * @return array
+     */
     protected function _extendFromNodeOnHigherLevelData()
     {
         $source = $result = [
@@ -112,6 +124,9 @@ protected function _extendFromNodeOnHigherLevelData()
         return [$source, $result];
     }
 
+    /**
+     * @return array
+     */
     protected function _extendWithMerge()
     {
         $source = $result = [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/Helper/RelativePathConverterTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/Helper/RelativePathConverterTest.php
index 058f9a380a27d..dd95574ffa62d 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/Helper/RelativePathConverterTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/Structure/Mapper/Helper/RelativePathConverterTest.php
@@ -52,11 +52,17 @@ public function testConvert($nodePath, $relativePath, $result)
         $this->assertEquals($result, $this->_sut->convert($nodePath, $relativePath));
     }
 
+    /**
+     * @return array
+     */
     public function convertWithInvalidArgumentsDataProvider()
     {
         return [['', ''], ['some/node', ''], ['', 'some/node']];
     }
 
+    /**
+     * @return array
+     */
     public function convertDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Config/StructureTest.php b/app/code/Magento/Config/Test/Unit/Model/Config/StructureTest.php
index e67ea6ec0fba1..6c059f4b69b70 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Config/StructureTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Config/StructureTest.php
@@ -221,6 +221,9 @@ private function getElementReturnsEmptyElementIfNotExistingElementIsRequested(
         return $elementMock;
     }
 
+    /**
+     * @return array
+     */
     public function emptyElementDataProvider()
     {
         return [
@@ -389,6 +392,9 @@ public function testGetFieldPathsByAttribute($attributeName, $attributeValue, $p
         $this->assertEquals($paths, $this->_model->getFieldPathsByAttribute($attributeName, $attributeValue));
     }
 
+    /**
+     * @return array
+     */
     public function getFieldPathsByAttributeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Config/Test/Unit/Model/Placeholder/EnvironmentTest.php b/app/code/Magento/Config/Test/Unit/Model/Placeholder/EnvironmentTest.php
index 8217ff09c0541..e4c01e794fb0f 100644
--- a/app/code/Magento/Config/Test/Unit/Model/Placeholder/EnvironmentTest.php
+++ b/app/code/Magento/Config/Test/Unit/Model/Placeholder/EnvironmentTest.php
@@ -52,6 +52,9 @@ public function testGenerate($path, $scope, $scopeId, $expected)
         );
     }
 
+    /**
+     * @return array
+     */
     public function getGenerateDataProvider()
     {
         return [
diff --git a/app/code/Magento/ConfigurableImportExport/Test/Unit/Model/Import/Product/Type/ConfigurableTest.php b/app/code/Magento/ConfigurableImportExport/Test/Unit/Model/Import/Product/Type/ConfigurableTest.php
index 8cdb5531a3cab..4446f98cff515 100644
--- a/app/code/Magento/ConfigurableImportExport/Test/Unit/Model/Import/Product/Type/ConfigurableTest.php
+++ b/app/code/Magento/ConfigurableImportExport/Test/Unit/Model/Import/Product/Type/ConfigurableTest.php
@@ -392,6 +392,9 @@ protected function _getBunch()
         ];
     }
 
+    /**
+     * @return array
+     */
     protected function _getSuperAttributes()
     {
         return [
diff --git a/app/code/Magento/ConfigurableProduct/Test/Unit/Block/Adminhtml/Product/Steps/SelectAttributesTest.php b/app/code/Magento/ConfigurableProduct/Test/Unit/Block/Adminhtml/Product/Steps/SelectAttributesTest.php
index 040329dbb3d87..33b87467950fd 100644
--- a/app/code/Magento/ConfigurableProduct/Test/Unit/Block/Adminhtml/Product/Steps/SelectAttributesTest.php
+++ b/app/code/Magento/ConfigurableProduct/Test/Unit/Block/Adminhtml/Product/Steps/SelectAttributesTest.php
@@ -114,6 +114,9 @@ public function testGetAddNewAttributeButton($isAllowed, $result)
         $this->assertEquals($result, $this->selectAttributes->getAddNewAttributeButton());
     }
 
+    /**
+     * @return array
+     */
     public function attributesDataProvider()
     {
         return [
diff --git a/app/code/Magento/ConfigurableProduct/Test/Unit/Model/Attribute/LockValidatorTest.php b/app/code/Magento/ConfigurableProduct/Test/Unit/Model/Attribute/LockValidatorTest.php
index 090c464d49307..665f296fc9a94 100644
--- a/app/code/Magento/ConfigurableProduct/Test/Unit/Model/Attribute/LockValidatorTest.php
+++ b/app/code/Magento/ConfigurableProduct/Test/Unit/Model/Attribute/LockValidatorTest.php
@@ -108,6 +108,10 @@ public function testValidateException()
         $this->validate(true);
     }
 
+    /**
+     * @param $exception
+     * @throws \Magento\Framework\Exception\LocalizedException
+     */
     public function validate($exception)
     {
         $attrTable = 'someAttributeTable';
diff --git a/app/code/Magento/ConfigurableProduct/Test/Unit/Model/OptionRepositoryTest.php b/app/code/Magento/ConfigurableProduct/Test/Unit/Model/OptionRepositoryTest.php
index 7ea55c51a5bb3..4b35182fb9e2f 100644
--- a/app/code/Magento/ConfigurableProduct/Test/Unit/Model/OptionRepositoryTest.php
+++ b/app/code/Magento/ConfigurableProduct/Test/Unit/Model/OptionRepositoryTest.php
@@ -390,6 +390,9 @@ public function testValidateNewOptionData($attributeId, $label, $optionValues, $
         $this->model->validateNewOptionData($optionMock);
     }
 
+    /**
+     * @return array
+     */
     public function validateOptionDataProvider()
     {
         return [
diff --git a/app/code/Magento/ConfigurableProduct/Test/Unit/Observer/HideUnsupportedAttributeTypesTest.php b/app/code/Magento/ConfigurableProduct/Test/Unit/Observer/HideUnsupportedAttributeTypesTest.php
index 3bad81126f510..03c26fd949283 100644
--- a/app/code/Magento/ConfigurableProduct/Test/Unit/Observer/HideUnsupportedAttributeTypesTest.php
+++ b/app/code/Magento/ConfigurableProduct/Test/Unit/Observer/HideUnsupportedAttributeTypesTest.php
@@ -59,6 +59,11 @@ private function createTarget(\PHPUnit_Framework_MockObject_MockObject $request,
         );
     }
 
+    /**
+     * @param $popup
+     * @param string $productTab
+     * @return MockObject
+     */
     private function createRequestMock($popup, $productTab = 'variations')
     {
         $request = $this->getMockBuilder(RequestInterface::class)
@@ -107,6 +112,9 @@ public function testExecuteWithDefaultTypes(array $supportedTypes, array $origin
         $this->assertEquals(null, $target->execute($event));
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
@@ -143,11 +151,21 @@ public function executeDataProvider()
         ];
     }
 
+    /**
+     * @param $value
+     * @param $label
+     * @return array
+     */
     private function createFrontendInputValue($value, $label)
     {
         return ['value' => $value, 'label' => $label];
     }
 
+    /**
+     * @param array $originalValues
+     * @param array $expectedValues
+     * @return MockObject
+     */
     private function createForm(array $originalValues = [], array $expectedValues = [])
     {
         $form = $this->getMockBuilder(\Magento\Framework\Data\Form::class)
diff --git a/app/code/Magento/Contact/Test/Unit/Controller/Index/PostTest.php b/app/code/Magento/Contact/Test/Unit/Controller/Index/PostTest.php
index 0e1ddf21c2a08..4b49373201e51 100644
--- a/app/code/Magento/Contact/Test/Unit/Controller/Index/PostTest.php
+++ b/app/code/Magento/Contact/Test/Unit/Controller/Index/PostTest.php
@@ -144,6 +144,9 @@ public function testExecutePostValidation($postData, $exceptionExpected)
         $this->controller->execute();
     }
 
+    /**
+     * @return array
+     */
     public function postDataProvider()
     {
         return [
diff --git a/app/code/Magento/Contact/Test/Unit/Controller/Stub/IndexStub.php b/app/code/Magento/Contact/Test/Unit/Controller/Stub/IndexStub.php
index a238daafaafaf..cabcebda061f9 100644
--- a/app/code/Magento/Contact/Test/Unit/Controller/Stub/IndexStub.php
+++ b/app/code/Magento/Contact/Test/Unit/Controller/Stub/IndexStub.php
@@ -8,6 +8,9 @@
 
 class IndexStub extends \Magento\Contact\Controller\Index
 {
+    /**
+     * @return \Magento\Framework\App\ResponseInterface|\Magento\Framework\Controller\ResultInterface|void
+     */
     public function execute()
     {
         // Empty method stub for test
diff --git a/app/code/Magento/Cookie/Test/Unit/Helper/CookieTest.php b/app/code/Magento/Cookie/Test/Unit/Helper/CookieTest.php
index 5694f3f3cab56..62ce6baf6c101 100644
--- a/app/code/Magento/Cookie/Test/Unit/Helper/CookieTest.php
+++ b/app/code/Magento/Cookie/Test/Unit/Helper/CookieTest.php
@@ -79,6 +79,9 @@ public function testGetCookieRestrictionLifetime()
         $this->assertEquals($this->_object->getCookieRestrictionLifetime(), 60 * 60 * 24 * 365);
     }
 
+    /**
+     * @return $this
+     */
     protected function _initMock()
     {
         $scopeConfig = $this->_getConfigStub();
diff --git a/app/code/Magento/CurrencySymbol/Test/Unit/Model/System/CurrencysymbolTest.php b/app/code/Magento/CurrencySymbol/Test/Unit/Model/System/CurrencysymbolTest.php
index 453a06651f354..0ae099fd78edc 100644
--- a/app/code/Magento/CurrencySymbol/Test/Unit/Model/System/CurrencysymbolTest.php
+++ b/app/code/Magento/CurrencySymbol/Test/Unit/Model/System/CurrencysymbolTest.php
@@ -236,6 +236,9 @@ public function testGetCurrencySymbol(
         $this->assertEquals($expectedSymbol, $currencySymbol);
     }
 
+    /**
+     * @return array
+     */
     public function getCurrencySymbolDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Block/Account/AuthenticationPopupTest.php b/app/code/Magento/Customer/Test/Unit/Block/Account/AuthenticationPopupTest.php
index b43b1d1aa39a9..618173e886e66 100644
--- a/app/code/Magento/Customer/Test/Unit/Block/Account/AuthenticationPopupTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Block/Account/AuthenticationPopupTest.php
@@ -128,6 +128,9 @@ public function testGetConfig($isAutocomplete, $baseUrl, $registerUrl, $forgotUr
         $this->assertEquals($result, $this->model->getConfig());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderGetConfig()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Block/Account/CustomerTest.php b/app/code/Magento/Customer/Test/Unit/Block/Account/CustomerTest.php
index 6489fea91e43e..793975c0b3191 100644
--- a/app/code/Magento/Customer/Test/Unit/Block/Account/CustomerTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Block/Account/CustomerTest.php
@@ -22,6 +22,9 @@ protected function setUp()
             ->getObject(\Magento\Customer\Block\Account\Customer::class, ['httpContext' => $this->httpContext]);
     }
 
+    /**
+     * @return array
+     */
     public function customerLoggedInDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Block/Account/Dashboard/InfoTest.php b/app/code/Magento/Customer/Test/Unit/Block/Account/Dashboard/InfoTest.php
index 66c686239e974..f04c10fa31576 100644
--- a/app/code/Magento/Customer/Test/Unit/Block/Account/Dashboard/InfoTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Block/Account/Dashboard/InfoTest.php
@@ -184,6 +184,9 @@ public function testIsNewsletterEnabled($isNewsletterEnabled, $expectedValue)
         $this->assertEquals($expectedValue, $this->_block->isNewsletterEnabled());
     }
 
+    /**
+     * @return array
+     */
     public function isNewsletterEnabledProvider()
     {
         return [[true, true], [false, false]];
diff --git a/app/code/Magento/Customer/Test/Unit/Block/Adminhtml/Edit/Tab/View/Grid/Renderer/ItemTest.php b/app/code/Magento/Customer/Test/Unit/Block/Adminhtml/Edit/Tab/View/Grid/Renderer/ItemTest.php
index c12da66cdc616..92c2bcfeb8e59 100644
--- a/app/code/Magento/Customer/Test/Unit/Block/Adminhtml/Edit/Tab/View/Grid/Renderer/ItemTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Block/Adminhtml/Edit/Tab/View/Grid/Renderer/ItemTest.php
@@ -14,6 +14,10 @@ class ItemTest extends \PHPUnit\Framework\TestCase
     /** @var  \Magento\Customer\Block\Adminhtml\Edit\Tab\View\Grid\Renderer\Item */
     protected $itemBlock;
 
+    /**
+     * @param $amountOption
+     * @param bool $withoutOptions
+     */
     public function configure($amountOption, $withoutOptions = false)
     {
         $options = [];
@@ -95,6 +99,9 @@ public function testRender($amountOption, $expectedHtml)
         $this->assertXmlStringEqualsXmlString($expectedHtml, $realHtml);
     }
 
+    /**
+     * @return array
+     */
     public function optionHtmlProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Block/Widget/NameTest.php b/app/code/Magento/Customer/Test/Unit/Block/Widget/NameTest.php
index aff9aeeb59cf8..11222635d210d 100644
--- a/app/code/Magento/Customer/Test/Unit/Block/Widget/NameTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Block/Widget/NameTest.php
@@ -157,6 +157,9 @@ public function testMethodWithNoSuchEntityException($method)
         $this->assertFalse($this->_block->{$method}());
     }
 
+    /**
+     * @return array
+     */
     public function methodDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Controller/Account/CreatePostTest.php b/app/code/Magento/Customer/Test/Unit/Controller/Account/CreatePostTest.php
index 2205bcd6f0a24..f8f47eedba3ef 100644
--- a/app/code/Magento/Customer/Test/Unit/Controller/Account/CreatePostTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Controller/Account/CreatePostTest.php
@@ -533,6 +533,9 @@ public function testSuccessRedirect(
         $this->model->execute();
     }
 
+    /**
+     * @return array
+     */
     public function getSuccessRedirectDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Controller/Address/FormPostTest.php b/app/code/Magento/Customer/Test/Unit/Controller/Address/FormPostTest.php
index 2b5438991b113..4ad1b5cbc96bd 100644
--- a/app/code/Magento/Customer/Test/Unit/Controller/Address/FormPostTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Controller/Address/FormPostTest.php
@@ -578,6 +578,9 @@ public function testExecute(
         $this->assertEquals($this->resultRedirect, $this->model->execute());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderTestExecute()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/Index/InlineEditTest.php b/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/Index/InlineEditTest.php
index 22c5003544bed..913c41070856e 100644
--- a/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/Index/InlineEditTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/Index/InlineEditTest.php
@@ -164,6 +164,9 @@ protected function setUp()
         ];
     }
 
+    /**
+     * @param int $populateSequence
+     */
     protected function prepareMocksForTesting($populateSequence = 0)
     {
         $this->resultJsonFactory->expects($this->once())
diff --git a/app/code/Magento/Customer/Test/Unit/Controller/Section/LoadTest.php b/app/code/Magento/Customer/Test/Unit/Controller/Section/LoadTest.php
index 3e9089c473212..f4bf184f9ebf2 100644
--- a/app/code/Magento/Customer/Test/Unit/Controller/Section/LoadTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Controller/Section/LoadTest.php
@@ -125,6 +125,9 @@ public function testExecute($sectionNames, $updateSectionID, $sectionNamesAsArra
         $this->loadAction->execute();
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/CustomerData/Plugin/SessionCheckerTest.php b/app/code/Magento/Customer/Test/Unit/CustomerData/Plugin/SessionCheckerTest.php
index a4246b6398fd1..5beea22bda3d7 100644
--- a/app/code/Magento/Customer/Test/Unit/CustomerData/Plugin/SessionCheckerTest.php
+++ b/app/code/Magento/Customer/Test/Unit/CustomerData/Plugin/SessionCheckerTest.php
@@ -86,6 +86,9 @@ public function testBeforeStart($result, $callCount)
         $this->plugin->beforeStart($this->sessionManager);
     }
 
+    /**
+     * @return array
+     */
     public function beforeStartDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Helper/AddressTest.php b/app/code/Magento/Customer/Test/Unit/Helper/AddressTest.php
index e41831a1ced60..74af4ec57c77f 100644
--- a/app/code/Magento/Customer/Test/Unit/Helper/AddressTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Helper/AddressTest.php
@@ -78,6 +78,9 @@ public function testGetStreetLines($numLines, $expectedNumLines)
         $this->assertEquals($expectedNumLines, $this->helper->getStreetLines());
     }
 
+    /**
+     * @return array
+     */
     public function providerGetStreetLines()
     {
         return [
@@ -190,6 +193,9 @@ public function testConvertStreetLines($origStreets, $toCount, $result)
         $this->assertEquals($result, $this->helper->convertStreetLines($origStreets, $toCount));
     }
 
+    /**
+     * @return array
+     */
     public function getConvertStreetLinesDataProvider()
     {
         return [
@@ -328,6 +334,9 @@ public function testGetFormatTypeRenderer($code, $result)
         $this->assertEquals($result, $this->helper->getFormatTypeRenderer($code));
     }
 
+    /**
+     * @return array
+     */
     public function getFormatTypeRendererDataProvider()
     {
         $renderer = $this->getMockBuilder(\Magento\Customer\Block\Address\Renderer\RendererInterface::class)
@@ -362,6 +371,9 @@ public function testGetFormat($code, $result)
         $this->assertEquals($result, $this->helper->getFormat($code));
     }
 
+    /**
+     * @return array
+     */
     public function getFormatDataProvider()
     {
         return [
@@ -392,6 +404,9 @@ public function testIsAttributeVisible($attributeCode, $isMetadataExists)
         $this->assertEquals($isMetadataExists, $this->helper->isAttributeVisible($attributeCode));
     }
 
+    /**
+     * @return array
+     */
     public function isAttributeVisibleDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Address/Config/XsdTest.php b/app/code/Magento/Customer/Test/Unit/Model/Address/Config/XsdTest.php
index 1b013a913b9f8..c64f7aca96fe6 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Address/Config/XsdTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Address/Config/XsdTest.php
@@ -39,6 +39,9 @@ public function testExemplarXml($fixtureXml, array $expectedErrors)
         $this->assertEquals($expectedErrors, $actualErrors);
     }
 
+    /**
+     * @return array
+     */
     public function exemplarXmlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/AuthenticationTest.php b/app/code/Magento/Customer/Test/Unit/Model/AuthenticationTest.php
index ee788913373e5..14adc7bcf8795 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/AuthenticationTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/AuthenticationTest.php
@@ -196,6 +196,9 @@ public function testProcessAuthenticationFailureFirstAttempt(
         $this->authentication->processAuthenticationFailure($customerId);
     }
 
+    /**
+     * @return array
+     */
     public function processAuthenticationFailureDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Customer/Attribute/Backend/PasswordTest.php b/app/code/Magento/Customer/Test/Unit/Model/Customer/Attribute/Backend/PasswordTest.php
index 9a9449a64ecbd..368e7cfd47f2f 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Customer/Attribute/Backend/PasswordTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Customer/Attribute/Backend/PasswordTest.php
@@ -39,6 +39,9 @@ public function testValidatePositive()
         $this->assertTrue($this->testable->validate($object));
     }
 
+    /**
+     * @return array
+     */
     public function passwordNegativeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Customer/DataProviderTest.php b/app/code/Magento/Customer/Test/Unit/Model/Customer/DataProviderTest.php
index 029949c5f35b0..f3070c46ebb7b 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Customer/DataProviderTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Customer/DataProviderTest.php
@@ -493,6 +493,9 @@ private function attributeGetUsingMethodCallback()
         };
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getCountryAttrMock()
     {
         $countryByWebsiteMock = $this->getMockBuilder(CountryWithWebsites::class)
diff --git a/app/code/Magento/Customer/Test/Unit/Model/FileProcessorTest.php b/app/code/Magento/Customer/Test/Unit/Model/FileProcessorTest.php
index f2db8c6cab6be..ea400933ea4c2 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/FileProcessorTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/FileProcessorTest.php
@@ -71,6 +71,11 @@ protected function setUp()
             ->getMock();
     }
 
+    /**
+     * @param $entityTypeCode
+     * @param array $allowedExtensions
+     * @return FileProcessor
+     */
     private function getModel($entityTypeCode, array $allowedExtensions = [])
     {
         $model = new FileProcessor(
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/AbstractDataTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/AbstractDataTest.php
index b9f8564d3616a..e4dc22ba40e31 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/AbstractDataTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/AbstractDataTest.php
@@ -94,6 +94,9 @@ public function testSetRequestScopeOnly($bool)
         $this->assertSame($bool, $this->_model->isRequestScopeOnly());
     }
 
+    /**
+     * @return array
+     */
     public function trueFalseDataProvider()
     {
         return [[true], [false]];
@@ -122,6 +125,9 @@ public function testApplyInputFilter($input, $output, $filter)
         $this->assertEquals($output, $this->_model->applyInputFilter($input));
     }
 
+    /**
+     * @return array
+     */
     public function applyInputFilterProvider()
     {
         return [
@@ -160,6 +166,9 @@ public function testDateFilterFormat($format, $output)
         $this->assertEquals($output, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function dateFilterFormatProvider()
     {
         return [[null, 'Whatever I put'], [false, self::MODEL], ['something else', self::MODEL]];
@@ -231,6 +240,9 @@ public function testValidateInputRule($value, $label, $inputValidation, $expecte
         $this->assertEquals($expectedOutput, $this->_model->validateInputRule($value));
     }
 
+    /**
+     * @return array
+     */
     public function validateInputRuleDataProvider()
     {
         return [
@@ -319,6 +331,9 @@ public function testGetRequestValue($request, $attributeCode, $requestScope, $re
         $this->assertEquals($expectedValue, $this->_model->getRequestValue($request));
     }
 
+    /**
+     * @return array
+     */
     public function getRequestValueDataProvider()
     {
         $expectedValue = 'EXPECTED_VALUE';
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/BooleanTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/BooleanTest.php
index 4315340d65bff..d9f101b922cc8 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/BooleanTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/BooleanTest.php
@@ -28,6 +28,9 @@ public function testGetOptionText($value, $expected)
         $this->assertSame($expected, (string)$boolean->outputValue());
     }
 
+    /**
+     * @return array
+     */
     public function getOptionTextDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/DateTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/DateTest.php
index 2c09555374aef..6329970e0ca9c 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/DateTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/DateTest.php
@@ -112,6 +112,9 @@ public function testValidateValue($value, $validation, $required, $expected)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function validateValueDataProvider()
     {
         return [
@@ -163,6 +166,9 @@ public function testCompactValue($value, $expected)
         $this->assertSame($expected, $this->date->compactValue($value));
     }
 
+    /**
+     * @return array
+     */
     public function compactAndRestoreValueDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/FileTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/FileTest.php
index 97452b995ba0b..1cffaa6fe0379 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/FileTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/FileTest.php
@@ -118,6 +118,9 @@ public function testExtractValueNoRequestScope($expected, $attributeCode = '', $
         }
     }
 
+    /**
+     * @return array
+     */
     public function extractValueNoRequestScopeDataProvider()
     {
         return [
@@ -178,6 +181,9 @@ public function testExtractValueWithRequestScope($expected, $requestScope, $main
         }
     }
 
+    /**
+     * @return array
+     */
     public function extractValueWithRequestScopeDataProvider()
     {
         return [
@@ -228,6 +234,9 @@ public function testValidateValueNotToUpload($expected, $value, $isAjax = false,
         $this->assertEquals($expected, $model->validateValue($value));
     }
 
+    /**
+     * @return array
+     */
     public function validateValueNotToUploadDataProvider()
     {
         return [
@@ -285,6 +294,9 @@ public function testValidateValueToUpload($expected, $value, $parameters = [])
         $this->assertEquals($expected, $model->validateValue($value));
     }
 
+    /**
+     * @return array
+     */
     public function validateValueToUploadDataProvider()
     {
         return [
@@ -429,6 +441,9 @@ public function testOutputValueNonJson($format)
         $this->assertSame('', $model->outputValue($format));
     }
 
+    /**
+     * @return array
+     */
     public function outputValueDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/MultilineTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/MultilineTest.php
index 25f10d7bb93c6..e74ddebdb597b 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/MultilineTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/MultilineTest.php
@@ -42,6 +42,9 @@ public function testValidateValueRequired($value, $expected)
         parent::testValidateValueRequired($value, $expected);
     }
 
+    /**
+     * @return array
+     */
     public function validateValueRequiredDataProvider()
     {
         return array_merge(
@@ -66,6 +69,9 @@ public function testValidateValueLength($value, $expected)
         parent::testValidateValueLength($value, $expected);
     }
 
+    /**
+     * @return array
+     */
     public function validateValueLengthDataProvider()
     {
         return array_merge(
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/SelectTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/SelectTest.php
index c8564df6b086f..5861ef1f93784 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/SelectTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/SelectTest.php
@@ -42,6 +42,9 @@ public function testValidateValue($value, $expected)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function validateValueDataProvider()
     {
         return [
@@ -74,6 +77,9 @@ public function testValidateValueRequired($value, $expected)
         }
     }
 
+    /**
+     * @return array
+     */
     public function validateValueRequiredDataProvider()
     {
         return [
@@ -145,6 +151,9 @@ public function testOutputValue($value, $expected)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function outputValueDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/TextTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/TextTest.php
index 9a3e1c1d8a7cb..b95987cba1dcf 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/TextTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/Form/TextTest.php
@@ -52,6 +52,9 @@ public function testValidateValue($value, $expected)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function validateValueDataProvider()
     {
         return [
@@ -84,6 +87,9 @@ public function testValidateValueRequired($value, $expected)
         }
     }
 
+    /**
+     * @return array
+     */
     public function validateValueRequiredDataProvider()
     {
         return [
@@ -150,6 +156,9 @@ public function testValidateValueLength($value, $expected)
         }
     }
 
+    /**
+     * @return array
+     */
     public function validateValueLengthDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Metadata/ValidatorTest.php b/app/code/Magento/Customer/Test/Unit/Model/Metadata/ValidatorTest.php
index bef2db9bf2694..354932b0ede0b 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Metadata/ValidatorTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Metadata/ValidatorTest.php
@@ -79,6 +79,9 @@ public function testIsValid($isValid)
         $this->assertEquals($isValid, $this->validator->isValid(new \Magento\Framework\DataObject($data)));
     }
 
+    /**
+     * @return array
+     */
     public function trueFalseDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Renderer/RegionTest.php b/app/code/Magento/Customer/Test/Unit/Model/Renderer/RegionTest.php
index 759c823eec7f9..c655ff7056ed6 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Renderer/RegionTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Renderer/RegionTest.php
@@ -90,6 +90,9 @@ public function testRender($regionCollection)
         $this->assertContains('required-entry', $html);
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/AddressTest.php b/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/AddressTest.php
index 87cfb092997e8..f1bc0b402c615 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/AddressTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/AddressTest.php
@@ -242,6 +242,9 @@ protected function prepareValidatorFactory()
         return $validatorFactory;
     }
 
+    /**
+     * @return \Magento\Customer\Model\CustomerFactory|\PHPUnit_Framework_MockObject_MockObject
+     */
     protected function prepareCustomerFactory()
     {
         $this->customerFactory = $this->createPartialMock(\Magento\Customer\Model\CustomerFactory::class, ['create']);
@@ -264,16 +267,26 @@ class SubResourceModelAddress extends \Magento\Customer\Model\ResourceModel\Addr
 {
     protected $attributeLoader;
 
+    /**
+     * @param null $object
+     * @return \Magento\Customer\Model\ResourceModel\Address|\Magento\Eav\Model\Entity\AbstractEntity
+     */
     public function loadAllAttributes($object = null)
     {
         return $this->getAttributeLoader()->loadAllAttributes($this, $object);
     }
 
+    /**
+     * @param $attributeLoader
+     */
     public function setAttributeLoader($attributeLoader)
     {
         $this->attributeLoader = $attributeLoader;
     }
 
+    /**
+     * @return \Magento\Eav\Model\Entity\AttributeLoaderInterface
+     */
     protected function getAttributeLoader()
     {
         return $this->attributeLoader;
diff --git a/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/Group/Grid/ServiceCollectionTest.php b/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/Group/Grid/ServiceCollectionTest.php
index 524ae9065f67e..31646437bfc4c 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/Group/Grid/ServiceCollectionTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/ResourceModel/Group/Grid/ServiceCollectionTest.php
@@ -227,6 +227,9 @@ public function testAddFieldToFilterInconsistentArrays($fields, $conditions)
         $this->serviceCollection->addFieldToFilter($fields, $conditions);
     }
 
+    /**
+     * @return array
+     */
     public function addFieldToFilterInconsistentArraysDataProvider()
     {
         return [
diff --git a/app/code/Magento/Customer/Test/Unit/Observer/AfterAddressSaveObserverTest.php b/app/code/Magento/Customer/Test/Unit/Observer/AfterAddressSaveObserverTest.php
index 939e2856f5eaa..8592d1bda66c1 100644
--- a/app/code/Magento/Customer/Test/Unit/Observer/AfterAddressSaveObserverTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Observer/AfterAddressSaveObserverTest.php
@@ -411,6 +411,9 @@ public function testAfterAddressSaveDefaultGroup(
         $this->model->execute($observer);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderAfterAddressSaveDefaultGroup()
     {
         return [
@@ -600,6 +603,9 @@ public function testAfterAddressSaveNewGroup(
         $this->model->execute($observer);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderAfterAddressSaveNewGroup()
     {
         return [
diff --git a/app/code/Magento/Deploy/Test/Unit/Console/Command/App/ConfigStatusCommandTest.php b/app/code/Magento/Deploy/Test/Unit/Console/Command/App/ConfigStatusCommandTest.php
index 7822e75930eba..737ad55d5e09b 100644
--- a/app/code/Magento/Deploy/Test/Unit/Console/Command/App/ConfigStatusCommandTest.php
+++ b/app/code/Magento/Deploy/Test/Unit/Console/Command/App/ConfigStatusCommandTest.php
@@ -57,6 +57,9 @@ public function testExecute(bool $hasChanges, $expectedMessage, $expectedCode)
         $this->assertSame($expectedCode, $tester->getStatusCode());
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Deploy/Test/Unit/Service/DeployStaticContentTest.php b/app/code/Magento/Deploy/Test/Unit/Service/DeployStaticContentTest.php
index 3fe1c9800a730..75edc8cb4f6ee 100644
--- a/app/code/Magento/Deploy/Test/Unit/Service/DeployStaticContentTest.php
+++ b/app/code/Magento/Deploy/Test/Unit/Service/DeployStaticContentTest.php
@@ -187,6 +187,9 @@ public function testDeploy($options, $expectedContentVersion)
         $this->assertEquals(null, $this->service->deploy($options));
     }
 
+    /**
+     * @return array
+     */
     public function deployDataProvider()
     {
         return [
diff --git a/app/code/Magento/Developer/Test/Unit/Helper/DataTest.php b/app/code/Magento/Developer/Test/Unit/Helper/DataTest.php
index 94d7cd250adda..9b964566f6093 100644
--- a/app/code/Magento/Developer/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/Developer/Test/Unit/Helper/DataTest.php
@@ -68,6 +68,9 @@ public function testIsDevAllowed($allowedIps, $expected, $callNum = 1)
         $this->assertEquals($expected, $this->helper->isDevAllowed($storeId));
     }
 
+    /**
+     * @return array
+     */
     public function isDevAllowedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Developer/Test/Unit/Model/TemplateEngine/Decorator/DebugHintsTest.php b/app/code/Magento/Developer/Test/Unit/Model/TemplateEngine/Decorator/DebugHintsTest.php
index d23fc89acc1b3..fd2475320261a 100644
--- a/app/code/Magento/Developer/Test/Unit/Model/TemplateEngine/Decorator/DebugHintsTest.php
+++ b/app/code/Magento/Developer/Test/Unit/Model/TemplateEngine/Decorator/DebugHintsTest.php
@@ -33,6 +33,9 @@ public function testRender($showBlockHints)
         $this->assertNotNull($actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return ['block hints disabled' => [false], 'block hints enabled' => [true]];
diff --git a/app/code/Magento/Directory/Test/Unit/Model/Currency/Import/ConfigTest.php b/app/code/Magento/Directory/Test/Unit/Model/Currency/Import/ConfigTest.php
index 76b23e4e79ec2..7ec34f609a29f 100644
--- a/app/code/Magento/Directory/Test/Unit/Model/Currency/Import/ConfigTest.php
+++ b/app/code/Magento/Directory/Test/Unit/Model/Currency/Import/ConfigTest.php
@@ -34,6 +34,9 @@ public function testConstructorException(array $configData, $expectedException)
         new \Magento\Directory\Model\Currency\Import\Config($configData);
     }
 
+    /**
+     * @return array
+     */
     public function constructorExceptionDataProvider()
     {
         return [
@@ -79,6 +82,9 @@ public function testGetServiceClass($serviceName, $expectedResult)
         $this->assertEquals($expectedResult, $this->_model->getServiceClass($serviceName));
     }
 
+    /**
+     * @return array
+     */
     public function getServiceClassDataProvider()
     {
         return ['known' => ['service_one', 'Service_One'], 'unknown' => ['unknown', null]];
@@ -94,6 +100,9 @@ public function testGetServiceLabel($serviceName, $expectedResult)
         $this->assertEquals($expectedResult, $this->_model->getServiceLabel($serviceName));
     }
 
+    /**
+     * @return array
+     */
     public function getServiceLabelDataProvider()
     {
         return ['known' => ['service_one', 'Service One'], 'unknown' => ['unknown', null]];
diff --git a/app/code/Magento/Directory/Test/Unit/Model/PriceCurrencyTest.php b/app/code/Magento/Directory/Test/Unit/Model/PriceCurrencyTest.php
index 915c11fe1b787..c80bc4ce62070 100644
--- a/app/code/Magento/Directory/Test/Unit/Model/PriceCurrencyTest.php
+++ b/app/code/Magento/Directory/Test/Unit/Model/PriceCurrencyTest.php
@@ -183,6 +183,9 @@ public function testGetCurrencySymbol()
         $this->assertEquals($currencySymbol, $this->priceCurrency->getCurrencySymbol($storeId, $currencyMock));
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getCurrentCurrencyMock()
     {
         $currency = $this->getMockBuilder(\Magento\Directory\Model\Currency::class)
@@ -192,6 +195,10 @@ protected function getCurrentCurrencyMock()
         return $currency;
     }
 
+    /**
+     * @param $baseCurrency
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getStoreMock($baseCurrency)
     {
         $store = $this->getMockBuilder(\Magento\Store\Model\Store::class)
@@ -205,6 +212,12 @@ protected function getStoreMock($baseCurrency)
         return $store;
     }
 
+    /**
+     * @param $amount
+     * @param $convertedAmount
+     * @param $currency
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getBaseCurrencyMock($amount, $convertedAmount, $currency)
     {
         $baseCurrency = $this->getMockBuilder(\Magento\Directory\Model\Currency::class)
diff --git a/app/code/Magento/Downloadable/Test/Unit/Block/Catalog/Product/LinksTest.php b/app/code/Magento/Downloadable/Test/Unit/Block/Catalog/Product/LinksTest.php
index 13f474e5f0bf8..c48dfc62a7d4f 100644
--- a/app/code/Magento/Downloadable/Test/Unit/Block/Catalog/Product/LinksTest.php
+++ b/app/code/Magento/Downloadable/Test/Unit/Block/Catalog/Product/LinksTest.php
@@ -156,6 +156,11 @@ public function testGetJsonConfig()
         $this->assertEquals(json_encode($config), $encodedJsonConfig);
     }
 
+    /**
+     * @param $linkPrice
+     * @param $linkId
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getLinkMock($linkPrice, $linkId)
     {
         $linkMock = $this->createPartialMock(\Magento\Downloadable\Model\Link::class, ['getPrice',
diff --git a/app/code/Magento/Downloadable/Test/Unit/Controller/Adminhtml/Product/Initialization/Helper/Plugin/DownloadableTest.php b/app/code/Magento/Downloadable/Test/Unit/Controller/Adminhtml/Product/Initialization/Helper/Plugin/DownloadableTest.php
index 3b3683c6af3e7..25a5d86b0385c 100644
--- a/app/code/Magento/Downloadable/Test/Unit/Controller/Adminhtml/Product/Initialization/Helper/Plugin/DownloadableTest.php
+++ b/app/code/Magento/Downloadable/Test/Unit/Controller/Adminhtml/Product/Initialization/Helper/Plugin/DownloadableTest.php
@@ -99,6 +99,9 @@ public function testAfterInitializeWithNoDataToSave($downloadable)
         $this->downloadablePlugin->afterInitialize($this->subjectMock, $this->productMock);
     }
 
+    /**
+     * @return array
+     */
     public function afterInitializeWithEmptyDataDataProvider()
     {
         return [
diff --git a/app/code/Magento/Downloadable/Test/Unit/Helper/DownloadTest.php b/app/code/Magento/Downloadable/Test/Unit/Helper/DownloadTest.php
index 226660b865240..7cb5b03b0385f 100644
--- a/app/code/Magento/Downloadable/Test/Unit/Helper/DownloadTest.php
+++ b/app/code/Magento/Downloadable/Test/Unit/Helper/DownloadTest.php
@@ -155,6 +155,9 @@ public function testGetContentTypeThroughHelper($functionExistsResult, $mimeCont
         $this->assertEquals(self::MIME_TYPE, $this->_helper->getContentType());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestGetContentTypeThroughHelper()
     {
         return [[false, ''], [true, false]];
@@ -187,6 +190,11 @@ public function testGetFileNameUrlWithContentDisposition()
         $this->assertEquals($fileName, $this->_helper->getFilename());
     }
 
+    /**
+     * @param bool $doesExist
+     * @param int $size
+     * @param string $path
+     */
     protected function _setupFileMocks($doesExist = true, $size = self::FILE_SIZE, $path = self::FILE_PATH)
     {
         $this->_handleMock->expects($this->any())->method('stat')->will($this->returnValue(['size' => $size]));
@@ -199,6 +207,11 @@ protected function _setupFileMocks($doesExist = true, $size = self::FILE_SIZE, $
         $this->_helper->setResource($path, DownloadHelper::LINK_TYPE_FILE);
     }
 
+    /**
+     * @param int $size
+     * @param string $url
+     * @param array $additionalStatData
+     */
     protected function _setupUrlMocks($size = self::FILE_SIZE, $url = self::URL, $additionalStatData = [])
     {
         $this->_handleMock->expects(
diff --git a/app/code/Magento/Downloadable/Test/Unit/Model/LinkRepositoryTest.php b/app/code/Magento/Downloadable/Test/Unit/Model/LinkRepositoryTest.php
index f771233fad7bb..821f251929f8b 100644
--- a/app/code/Magento/Downloadable/Test/Unit/Model/LinkRepositoryTest.php
+++ b/app/code/Magento/Downloadable/Test/Unit/Model/LinkRepositoryTest.php
@@ -540,6 +540,10 @@ public function testGetList()
         $this->assertEquals([$linkInterfaceMock], $this->service->getList($productSku));
     }
 
+    /**
+     * @param $resource
+     * @param $inputData
+     */
     protected function setLinkAssertions($resource, $inputData)
     {
         $resource->expects($this->any())->method('getId')->will($this->returnValue($inputData['id']));
diff --git a/app/code/Magento/Downloadable/Test/Unit/Observer/SetLinkStatusObserverTest.php b/app/code/Magento/Downloadable/Test/Unit/Observer/SetLinkStatusObserverTest.php
index 5a138d83d2673..e63ce2437035b 100644
--- a/app/code/Magento/Downloadable/Test/Unit/Observer/SetLinkStatusObserverTest.php
+++ b/app/code/Magento/Downloadable/Test/Unit/Observer/SetLinkStatusObserverTest.php
@@ -104,6 +104,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function setLinkStatusPendingDataProvider()
     {
         return [
diff --git a/app/code/Magento/Downloadable/Test/Unit/_files/download_mock.php b/app/code/Magento/Downloadable/Test/Unit/_files/download_mock.php
index 467e1f428206b..e634f0ffa341d 100644
--- a/app/code/Magento/Downloadable/Test/Unit/_files/download_mock.php
+++ b/app/code/Magento/Downloadable/Test/Unit/_files/download_mock.php
@@ -7,11 +7,17 @@
 
 use Magento\Downloadable\Test\Unit\Helper\DownloadTest;
 
+/**
+ * @return bool
+ */
 function function_exists()
 {
     return DownloadTest::$functionExists;
 }
 
+/**
+ * @return string
+ */
 function mime_content_type()
 {
     return DownloadTest::$mimeContentType;
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Adminhtml/System/Config/Source/InputtypeTest.php b/app/code/Magento/Eav/Test/Unit/Model/Adminhtml/System/Config/Source/InputtypeTest.php
index a851ab4161093..d3c221bca5787 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Adminhtml/System/Config/Source/InputtypeTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Adminhtml/System/Config/Source/InputtypeTest.php
@@ -25,6 +25,9 @@ public function testToOptionArray()
         $this->assertEquals($expectedResult, $this->model->toOptionArray());
     }
 
+    /**
+     * @return array
+     */
     private function getOptionsArray()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/AttributeFactoryTest.php b/app/code/Magento/Eav/Test/Unit/Model/AttributeFactoryTest.php
index 572e7192d810e..a06e9030227e9 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/AttributeFactoryTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/AttributeFactoryTest.php
@@ -50,6 +50,11 @@ public function testCreateAttribute()
         $this->assertEquals($this->_className, $this->_factory->createAttribute($this->_className, $this->_arguments));
     }
 
+    /**
+     * @param $className
+     * @param $arguments
+     * @return mixed
+     */
     public function getModelInstance($className, $arguments)
     {
         $this->assertInternalType('array', $arguments);
diff --git a/app/code/Magento/Eav/Test/Unit/Model/CustomAttributesMapperTest.php b/app/code/Magento/Eav/Test/Unit/Model/CustomAttributesMapperTest.php
index d2067bccef0bb..67cb65c21443e 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/CustomAttributesMapperTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/CustomAttributesMapperTest.php
@@ -198,6 +198,9 @@ public function testDatabaseToEntity()
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     private function getAttributes()
     {
         /* Attribute with the code we want to copy */
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/AbstractEntityTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/AbstractEntityTest.php
index 67899dc3902eb..1203e2cecb477 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/AbstractEntityTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/AbstractEntityTest.php
@@ -61,6 +61,9 @@ public function testCompareAttributes($attribute1Sort, $attribute2Sort, $expecte
         $this->assertEquals($expected, $this->_model->attributesCompare($attribute1, $attribute2));
     }
 
+    /**
+     * @return array
+     */
     public static function compareAttributesDataProvider()
     {
         return [
@@ -313,6 +316,9 @@ function ($entityType, $attributeCode) use ($attributes) {
         $model->save($object);
     }
 
+    /**
+     * @return array
+     */
     public function productAttributesDataProvider()
     {
         $attributeSetId = 10;
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Backend/ArrayBackendTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Backend/ArrayBackendTest.php
index 3c0e304dbf628..475ffea98e90e 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Backend/ArrayBackendTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Backend/ArrayBackendTest.php
@@ -40,6 +40,9 @@ public function testValidate($data)
         $this->assertEquals(null, $product->getEmpty());
     }
 
+    /**
+     * @return array
+     */
     public static function attributeValueDataProvider()
     {
         return [[[1, 2, 3]], ['1,2,3']];
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Source/TableTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Source/TableTest.php
index 6f79e7ed06fad..b68446d22f910 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Source/TableTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/Attribute/Source/TableTest.php
@@ -194,6 +194,9 @@ public function testGetSpecificOptions($optionIds, $withEmpty)
         $this->assertEquals($options, $this->model->getSpecificOptions($optionIds, $withEmpty));
     }
 
+    /**
+     * @return array
+     */
     public function specificOptionsProvider()
     {
         return [
@@ -249,6 +252,9 @@ public function testGetOptionText($optionsIds, $value, $options, $expectedResult
         $this->assertEquals($expectedResult, $this->model->getOptionText($value));
     }
 
+    /**
+     * @return array
+     */
     public function getOptionTextProvider()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/AttributeTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/AttributeTest.php
index 27957e8090d3e..911aecf8e7cfb 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/AttributeTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/AttributeTest.php
@@ -33,6 +33,9 @@ public function testGetBackendTypeByInput($givenFrontendInput, $expectedBackendT
         $this->assertEquals($expectedBackendType, $this->_model->getBackendTypeByInput($givenFrontendInput));
     }
 
+    /**
+     * @return array
+     */
     public static function dataGetBackendTypeByInput()
     {
         return [
@@ -61,6 +64,9 @@ public function testGetDefaultValueByInput($givenFrontendInput, $expectedDefault
         $this->assertEquals($expectedDefaultValue, $this->_model->getDefaultValueByInput($givenFrontendInput));
     }
 
+    /**
+     * @return array
+     */
     public static function dataGetDefaultValueByInput()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/AbstractCollectionTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/AbstractCollectionTest.php
index 1581c445a3c76..bc4ed7d4bd9e4 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/AbstractCollectionTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/AbstractCollectionTest.php
@@ -193,6 +193,9 @@ public function testRemoveItemByKey($values, $count)
         $this->assertNull($this->model->getItemById($testId));
     }
 
+    /**
+     * @return array
+     */
     public function getItemsDataProvider()
     {
         return [
@@ -202,6 +205,9 @@ public function getItemsDataProvider()
         ];
     }
 
+    /**
+     * @return \Magento\Framework\DataObject
+     */
     public function getMagentoObject()
     {
         return new \Magento\Framework\DataObject();
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/VersionControl/AbstractCollectionTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/VersionControl/AbstractCollectionTest.php
index d281b8d1095f4..cce7b43786a76 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/VersionControl/AbstractCollectionTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/Collection/VersionControl/AbstractCollectionTest.php
@@ -68,6 +68,9 @@ public function testFetchItem(array $data)
         }
     }
 
+    /**
+     * @return array
+     */
     public static function fetchItemDataProvider()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/AlphanumTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/AlphanumTest.php
index 16ba85f4905ea..50e7f185a24e5 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/AlphanumTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/AlphanumTest.php
@@ -37,6 +37,9 @@ public function testGetNextId($lastId, $prefix, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->getNextId());
     }
 
+    /**
+     * @return array
+     */
     public function getLastIdDataProvider()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/NumericTest.php b/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/NumericTest.php
index a976fc1f3e654..16767fb633028 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/NumericTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/Entity/Increment/NumericTest.php
@@ -32,6 +32,9 @@ public function testGetNextId($lastId, $prefix, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->getNextId());
     }
 
+    /**
+     * @return array
+     */
     public function getLastIdDataProvider()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/Attribute/CollectionTest.php b/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/Attribute/CollectionTest.php
index d988dfc63c959..544cd9893e49e 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/Attribute/CollectionTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/Attribute/CollectionTest.php
@@ -177,6 +177,9 @@ public function testInitSelect($column, $value)
         $this->model->getSelectCountSql()->assemble();
     }
 
+    /**
+     * @return array
+     */
     public function initSelectDataProvider()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/AttributeLoaderTest.php b/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/AttributeLoaderTest.php
index 8e6fa3afd15b9..ea02ec71a7bbd 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/AttributeLoaderTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/AttributeLoaderTest.php
@@ -90,6 +90,9 @@ public function testGetAttributes($entityType, $attributeSetId, $expectedConditi
         $this->assertEquals([$attributeMock], $this->attributeLoader->getAttributes($entityType, $attributeSetId));
     }
 
+    /**
+     * @return array
+     */
     public function getAttributesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/ReadHandlerTest.php b/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/ReadHandlerTest.php
index 60c823cadfe89..eba73fa38d832 100644
--- a/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/ReadHandlerTest.php
+++ b/app/code/Magento/Eav/Test/Unit/Model/ResourceModel/ReadHandlerTest.php
@@ -115,6 +115,9 @@ public function testExecute($eavEntityType, $callNum, array $expected, $isStatic
         $this->assertEquals($expected, $this->readHandler->execute('entity_type', $entityData));
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Email/Test/Unit/Model/AbstractTemplateTest.php b/app/code/Magento/Email/Test/Unit/Model/AbstractTemplateTest.php
index 4f545360616c6..0a0e9f780351d 100644
--- a/app/code/Magento/Email/Test/Unit/Model/AbstractTemplateTest.php
+++ b/app/code/Magento/Email/Test/Unit/Model/AbstractTemplateTest.php
@@ -378,6 +378,9 @@ public function testSetDesignConfigWithValidInputParametersReturnsSuccess()
         $this->assertEquals($config, $model->getDesignConfig()->getData());
     }
 
+    /**
+     * @return array
+     */
     public function invalidInputParametersDataProvider()
     {
         return [[[]], [['area' => 'some_area']], [['store' => 'any_store']]];
diff --git a/app/code/Magento/Email/Test/Unit/Model/Template/Config/XsdTest.php b/app/code/Magento/Email/Test/Unit/Model/Template/Config/XsdTest.php
index bb7ac6934106a..9851649c05e0c 100644
--- a/app/code/Magento/Email/Test/Unit/Model/Template/Config/XsdTest.php
+++ b/app/code/Magento/Email/Test/Unit/Model/Template/Config/XsdTest.php
@@ -27,6 +27,9 @@ public function testMergedXml($fixtureXml, array $expectedErrors)
         $this->_testXmlAgainstXsd($fixtureXml, $schemaFile, $expectedErrors);
     }
 
+    /**
+     * @return array
+     */
     public function mergedXmlDataProvider()
     {
         // @codingStandardsIgnoreStart
diff --git a/app/code/Magento/Email/Test/Unit/Model/Template/ConfigTest.php b/app/code/Magento/Email/Test/Unit/Model/Template/ConfigTest.php
index b396f2ede8977..b0e181c4ac54c 100644
--- a/app/code/Magento/Email/Test/Unit/Model/Template/ConfigTest.php
+++ b/app/code/Magento/Email/Test/Unit/Model/Template/ConfigTest.php
@@ -190,6 +190,9 @@ public function testParseTemplateIdParts($input, $expectedOutput)
         $this->assertEquals($this->model->parseTemplateIdParts($input), $expectedOutput);
     }
 
+    /**
+     * @return array
+     */
     public function parseTemplateCodePartsDataProvider()
     {
         return [
@@ -302,6 +305,9 @@ public function testGetterMethodUnknownTemplate($getterMethod, $argument = null)
         }
     }
 
+    /**
+     * @return array
+     */
     public function getterMethodUnknownTemplateDataProvider()
     {
         return [
@@ -349,6 +355,9 @@ public function testGetterMethodUnknownField(
         }
     }
 
+    /**
+     * @return array
+     */
     public function getterMethodUnknownFieldDataProvider()
     {
         return [
diff --git a/app/code/Magento/Email/Test/Unit/Model/TemplateTest.php b/app/code/Magento/Email/Test/Unit/Model/TemplateTest.php
index 7b22798eac49b..5464ca51cbe35 100644
--- a/app/code/Magento/Email/Test/Unit/Model/TemplateTest.php
+++ b/app/code/Magento/Email/Test/Unit/Model/TemplateTest.php
@@ -299,6 +299,9 @@ public function testLoadDefault(
         $this->assertEquals($expectedTemplateStyles, $model->getTemplateStyles());
     }
 
+    /**
+     * @return array
+     */
     public function loadDefaultDataProvider()
     {
         return [
@@ -454,6 +457,9 @@ public function testIsValidForSend($senderName, $senderEmail, $templateSubject,
         $this->assertEquals($expectedValue, $model->isValidForSend());
     }
 
+    /**
+     * @return array
+     */
     public function isValidForSendDataProvider()
     {
         return [
@@ -549,6 +555,9 @@ public function testGetVariablesOptionArray($withGroup, $templateVariables, $exp
         $this->assertEquals($expectedResult, $model->getVariablesOptionArray($withGroup));
     }
 
+    /**
+     * @return array
+     */
     public function getVariablesOptionArrayDataProvider()
     {
         return [
@@ -649,6 +658,9 @@ public function testProcessTemplate($templateId, $expectedResult)
         $this->assertTrue($model->getUseAbsoluteLinks());
     }
 
+    /**
+     * @return array
+     */
     public function processTemplateVariable()
     {
         return [
@@ -745,6 +757,9 @@ public function testGetType($templateType, $expectedResult)
         $this->assertEquals($expectedResult, $model->getType());
     }
 
+    /**
+     * @return array
+     */
     public function getTypeDataProvider()
     {
         return [['text', 1], ['html', 2]];
diff --git a/app/code/Magento/GiftMessage/Test/Unit/Block/Cart/Item/Renderer/Actions/ItemIdProcessorTest.php b/app/code/Magento/GiftMessage/Test/Unit/Block/Cart/Item/Renderer/Actions/ItemIdProcessorTest.php
index 35759f4d3f44a..f83f2304143a1 100644
--- a/app/code/Magento/GiftMessage/Test/Unit/Block/Cart/Item/Renderer/Actions/ItemIdProcessorTest.php
+++ b/app/code/Magento/GiftMessage/Test/Unit/Block/Cart/Item/Renderer/Actions/ItemIdProcessorTest.php
@@ -39,6 +39,9 @@ public function testProcess($itemId, array $jsLayout, array $result)
         $this->assertEquals($result, $this->model->process($jsLayout, $itemMock));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderProcess()
     {
         return [
diff --git a/app/code/Magento/GoogleAdwords/Test/Unit/Helper/DataTest.php b/app/code/Magento/GoogleAdwords/Test/Unit/Helper/DataTest.php
index e45ff12a9e206..55811191affbf 100644
--- a/app/code/Magento/GoogleAdwords/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/GoogleAdwords/Test/Unit/Helper/DataTest.php
@@ -91,6 +91,9 @@ public function testGetLanguageCodes()
         $this->assertEquals($languages, $this->_helper->getLanguageCodes());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestConvertLanguage()
     {
         return [
diff --git a/app/code/Magento/GoogleAdwords/Test/Unit/Model/Filter/UppercaseTitleTest.php b/app/code/Magento/GoogleAdwords/Test/Unit/Model/Filter/UppercaseTitleTest.php
index cf013780105a7..76a746ea77b92 100644
--- a/app/code/Magento/GoogleAdwords/Test/Unit/Model/Filter/UppercaseTitleTest.php
+++ b/app/code/Magento/GoogleAdwords/Test/Unit/Model/Filter/UppercaseTitleTest.php
@@ -17,6 +17,9 @@ protected function setUp()
         $this->_model = new \Magento\GoogleAdwords\Model\Filter\UppercaseTitle();
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForFilterValues()
     {
         return [['some name', 'Some Name'], ['test', 'Test']];
diff --git a/app/code/Magento/GoogleAdwords/Test/Unit/Observer/SetConversionValueObserverTest.php b/app/code/Magento/GoogleAdwords/Test/Unit/Observer/SetConversionValueObserverTest.php
index 4e8d8e34fbea7..a514787660559 100644
--- a/app/code/Magento/GoogleAdwords/Test/Unit/Observer/SetConversionValueObserverTest.php
+++ b/app/code/Magento/GoogleAdwords/Test/Unit/Observer/SetConversionValueObserverTest.php
@@ -58,6 +58,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForDisabled()
     {
         return [[false, false], [false, true], [true, false]];
@@ -90,6 +93,9 @@ function () use ($isDynamic) {
         $this->assertSame($this->_model, $this->_model->execute($this->_eventObserverMock));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForOrdersIds()
     {
         return [[[]], ['']];
diff --git a/app/code/Magento/GroupedImportExport/Test/Unit/Model/Import/Product/Type/Grouped/LinksTest.php b/app/code/Magento/GroupedImportExport/Test/Unit/Model/Import/Product/Type/Grouped/LinksTest.php
index ffcfa5c0a90d7..9a4ddeb4f55f5 100644
--- a/app/code/Magento/GroupedImportExport/Test/Unit/Model/Import/Product/Type/Grouped/LinksTest.php
+++ b/app/code/Magento/GroupedImportExport/Test/Unit/Model/Import/Product/Type/Grouped/LinksTest.php
@@ -57,6 +57,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function linksDataProvider()
     {
         return [
@@ -107,6 +110,9 @@ public function testSaveLinksDataWithProductsAttrs($linksData)
         $this->links->saveLinksData($linksData);
     }
 
+    /**
+     * @return array
+     */
     public function attributesDataProvider()
     {
         return [
@@ -135,6 +141,9 @@ public function attributesDataProvider()
         ];
     }
 
+    /**
+     * @param $dbAttributes
+     */
     protected function processAttributeGetter($dbAttributes)
     {
         $select = $this->createMock(\Magento\Framework\DB\Select::class);
@@ -162,6 +171,9 @@ public function testGetAttributes($dbAttributes, $returnedAttributes)
         $this->assertEquals($returnedAttributes, $actualAttributes);
     }
 
+    /**
+     * @param $behavior
+     */
     protected function processBehaviorGetter($behavior)
     {
         $dataSource = $this->createMock(\Magento\ImportExport\Model\ResourceModel\Import\Data::class);
diff --git a/app/code/Magento/GroupedProduct/Test/Unit/Block/Product/View/Type/GroupedTest.php b/app/code/Magento/GroupedProduct/Test/Unit/Block/Product/View/Type/GroupedTest.php
index 77ffb200f84e0..e8ed2e5d6f880 100644
--- a/app/code/Magento/GroupedProduct/Test/Unit/Block/Product/View/Type/GroupedTest.php
+++ b/app/code/Magento/GroupedProduct/Test/Unit/Block/Product/View/Type/GroupedTest.php
@@ -111,6 +111,9 @@ public function testSetPreconfiguredValue($id)
         $this->groupedView->setPreconfiguredValue();
     }
 
+    /**
+     * @return array
+     */
     public function setPreconfiguredValueDataProvider()
     {
         return ['item_id_exist_in_config' => ['id_one'], 'item_id_not_exist_in_config' => ['id_two']];
diff --git a/app/code/Magento/GroupedProduct/Test/Unit/Model/Product/Initialization/Helper/ProductLinks/Plugin/GroupedTest.php b/app/code/Magento/GroupedProduct/Test/Unit/Model/Product/Initialization/Helper/ProductLinks/Plugin/GroupedTest.php
index 309794a6cc37d..2dbdbb551f97a 100644
--- a/app/code/Magento/GroupedProduct/Test/Unit/Model/Product/Initialization/Helper/ProductLinks/Plugin/GroupedTest.php
+++ b/app/code/Magento/GroupedProduct/Test/Unit/Model/Product/Initialization/Helper/ProductLinks/Plugin/GroupedTest.php
@@ -92,6 +92,9 @@ public function testBeforeInitializeLinksRequestDoesNotHaveGrouped($productType)
         $this->model->beforeInitializeLinks($this->subjectMock, $this->productMock, []);
     }
 
+    /**
+     * @return array
+     */
     public function productTypeDataProvider()
     {
         return [
@@ -141,6 +144,9 @@ public function testBeforeInitializeLinksRequestHasGrouped($linksData)
         $this->model->beforeInitializeLinks($this->subjectMock, $this->productMock, ['associated' => $linksData]);
     }
 
+    /**
+     * @return array
+     */
     public function linksDataProvider()
     {
         return [
diff --git a/app/code/Magento/GroupedProduct/Test/Unit/Pricing/Price/FinalPriceTest.php b/app/code/Magento/GroupedProduct/Test/Unit/Pricing/Price/FinalPriceTest.php
index 13e1dde0c526c..97727b286c9cb 100644
--- a/app/code/Magento/GroupedProduct/Test/Unit/Pricing/Price/FinalPriceTest.php
+++ b/app/code/Magento/GroupedProduct/Test/Unit/Pricing/Price/FinalPriceTest.php
@@ -102,6 +102,10 @@ public function testGetValueWithoutMinProduct()
         $this->assertEquals(0.00, $this->finalPrice->getValue());
     }
 
+    /**
+     * @param $price
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getProductMock($price)
     {
         $priceTypeMock = $this->createMock(\Magento\Catalog\Pricing\Price\FinalPrice::class);
diff --git a/app/code/Magento/GroupedProduct/Test/Unit/Ui/DataProvider/Product/GroupedProductDataProviderTest.php b/app/code/Magento/GroupedProduct/Test/Unit/Ui/DataProvider/Product/GroupedProductDataProviderTest.php
index 8dc8fc0483d41..9a4662ffa42cc 100644
--- a/app/code/Magento/GroupedProduct/Test/Unit/Ui/DataProvider/Product/GroupedProductDataProviderTest.php
+++ b/app/code/Magento/GroupedProduct/Test/Unit/Ui/DataProvider/Product/GroupedProductDataProviderTest.php
@@ -75,6 +75,9 @@ protected function setUp()
             ->getMockForAbstractClass();
     }
 
+    /**
+     * @return object
+     */
     protected function getModel()
     {
         return $this->objectManager->getObject(GroupedProductDataProvider::class, [
diff --git a/app/code/Magento/ImportExport/Test/Unit/Model/Export/ConfigTest.php b/app/code/Magento/ImportExport/Test/Unit/Model/Export/ConfigTest.php
index 953f76f6cf702..f9d0cf11179dc 100644
--- a/app/code/Magento/ImportExport/Test/Unit/Model/Export/ConfigTest.php
+++ b/app/code/Magento/ImportExport/Test/Unit/Model/Export/ConfigTest.php
@@ -65,6 +65,9 @@ public function testGetEntities($value, $expected)
         $this->assertEquals($expected, $this->model->getEntities('entities'));
     }
 
+    /**
+     * @return array
+     */
     public function getEntitiesDataProvider()
     {
         return [
@@ -100,6 +103,9 @@ public function testGetEntityTypes($configData, $entity, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->getEntityTypes($entity));
     }
 
+    /**
+     * @return array
+     */
     public function getEntityTypesDataProvider()
     {
         return [
@@ -154,6 +160,9 @@ public function testGetFileFormats($value, $expected)
         $this->assertEquals($expected, $this->model->getFileFormats('fileFormats'));
     }
 
+    /**
+     * @return array
+     */
     public function getFileFormatsDataProvider()
     {
         return [
diff --git a/app/code/Magento/ImportExport/Test/Unit/Model/Import/ConfigTest.php b/app/code/Magento/ImportExport/Test/Unit/Model/Import/ConfigTest.php
index 688e3a2659c6d..aa37551034a25 100644
--- a/app/code/Magento/ImportExport/Test/Unit/Model/Import/ConfigTest.php
+++ b/app/code/Magento/ImportExport/Test/Unit/Model/Import/ConfigTest.php
@@ -65,6 +65,9 @@ public function testGetEntities($value, $expected)
         $this->assertEquals($expected, $this->model->getEntities('entities'));
     }
 
+    /**
+     * @return array
+     */
     public function getEntitiesDataProvider()
     {
         return [
@@ -100,6 +103,9 @@ public function testGetEntityTypes($configData, $entity, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->getEntityTypes($entity));
     }
 
+    /**
+     * @return array
+     */
     public function getEntityTypesDataProvider()
     {
         return [
diff --git a/app/code/Magento/ImportExport/Test/Unit/Model/Import/Source/ZipTest.php b/app/code/Magento/ImportExport/Test/Unit/Model/Import/Source/ZipTest.php
index 6ef2ef02865f1..7fb9457c2d704 100644
--- a/app/code/Magento/ImportExport/Test/Unit/Model/Import/Source/ZipTest.php
+++ b/app/code/Magento/ImportExport/Test/Unit/Model/Import/Source/ZipTest.php
@@ -39,6 +39,9 @@ public function testConstructorFileDestinationMatch($fileName, $expectedfileName
         $this->_invokeConstructor($fileName);
     }
 
+    /**
+     * @return array
+     */
     public function constructorFileDestinationMatchDataProvider()
     {
         return [
diff --git a/app/code/Magento/Indexer/Test/Unit/App/IndexerTest.php b/app/code/Magento/Indexer/Test/Unit/App/IndexerTest.php
index 5bc20e0633191..490d9437941f6 100644
--- a/app/code/Magento/Indexer/Test/Unit/App/IndexerTest.php
+++ b/app/code/Magento/Indexer/Test/Unit/App/IndexerTest.php
@@ -62,6 +62,9 @@ public function testExecute($isExist, $callCount)
         $this->assertEquals(0, $this->entryPoint->launch()->getCode());
     }
 
+    /**
+     * @return array
+     */
     public function executeProvider()
     {
         return [
diff --git a/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/ScheduledTest.php b/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/ScheduledTest.php
index 6ae005efa0550..1a226e073ca5e 100644
--- a/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/ScheduledTest.php
+++ b/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/ScheduledTest.php
@@ -31,6 +31,9 @@ public function testRender($rowValue, $class, $text)
         $this->assertEquals($result, $html);
     }
 
+    /**
+     * @return array
+     */
     public function typeProvider()
     {
         return [
diff --git a/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/StatusTest.php b/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/StatusTest.php
index e419a010ad96d..705a9e3998ae8 100644
--- a/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/StatusTest.php
+++ b/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/StatusTest.php
@@ -33,6 +33,9 @@ public function testRender($indexValues, $expectedResult)
         );
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/UpdatedTest.php b/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/UpdatedTest.php
index e1ad5c50f3c91..369a4d46abf49 100644
--- a/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/UpdatedTest.php
+++ b/app/code/Magento/Indexer/Test/Unit/Block/Backend/Grid/Column/Renderer/UpdatedTest.php
@@ -27,6 +27,9 @@ public function testRender($defaultValue, $assert)
         $this->assertEquals($result, $assert);
     }
 
+    /**
+     * @return array
+     */
     public function renderProvider()
     {
         return [
diff --git a/app/code/Magento/Indexer/Test/Unit/Model/IndexerTest.php b/app/code/Magento/Indexer/Test/Unit/Model/IndexerTest.php
index e9c82906121cc..6b7cc12218990 100644
--- a/app/code/Magento/Indexer/Test/Unit/Model/IndexerTest.php
+++ b/app/code/Magento/Indexer/Test/Unit/Model/IndexerTest.php
@@ -323,6 +323,9 @@ function () {
         $this->model->reindexAll();
     }
 
+    /**
+     * @return array
+     */
     protected function getIndexerData()
     {
         return [
diff --git a/app/code/Magento/Indexer/Test/Unit/Model/ResourceModel/AbstractResourceTest.php b/app/code/Magento/Indexer/Test/Unit/Model/ResourceModel/AbstractResourceTest.php
index f7b99fdb8d23f..46ae79fc92f4a 100644
--- a/app/code/Magento/Indexer/Test/Unit/Model/ResourceModel/AbstractResourceTest.php
+++ b/app/code/Magento/Indexer/Test/Unit/Model/ResourceModel/AbstractResourceTest.php
@@ -165,6 +165,9 @@ public function testInsertFromTable($readToIndex)
         );
     }
 
+    /**
+     * @return array
+     */
     public function insertFromTableData()
     {
         return [[false], [true]];
diff --git a/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Integration/Edit/Tab/WebapiTest.php b/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Integration/Edit/Tab/WebapiTest.php
index b5f2b22186187..7738e9939fcdd 100644
--- a/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Integration/Edit/Tab/WebapiTest.php
+++ b/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Integration/Edit/Tab/WebapiTest.php
@@ -83,6 +83,9 @@ public function testCanShowTab($integrationData, $expectedValue)
         $this->assertEquals($expectedValue, $this->webapiBlock->canShowTab());
     }
 
+    /**
+     * @return array
+     */
     public function canShowTabProvider()
     {
         return [
@@ -127,6 +130,9 @@ public function testIsEverythingAllowed($rootResourceId, $integrationData, $sele
         $this->assertEquals($expectedValue, $this->webapiBlock->isEverythingAllowed());
     }
 
+    /**
+     * @return array
+     */
     public function isEverythingAllowedProvider()
     {
         return [
diff --git a/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Widget/Grid/Column/Renderer/NameTest.php b/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Widget/Grid/Column/Renderer/NameTest.php
index 91f56279a89e5..30f1dc1d90bdc 100644
--- a/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Widget/Grid/Column/Renderer/NameTest.php
+++ b/app/code/Magento/Integration/Test/Unit/Block/Adminhtml/Widget/Grid/Column/Renderer/NameTest.php
@@ -87,6 +87,9 @@ public function testRender($endpoint, $name, $expectedResult)
         $this->assertEquals($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function endpointDataProvider()
     {
         return [
diff --git a/app/code/Magento/Integration/Test/Unit/Helper/DataTest.php b/app/code/Magento/Integration/Test/Unit/Helper/DataTest.php
index ca79393efb113..0cb550913ba60 100644
--- a/app/code/Magento/Integration/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/Integration/Test/Unit/Helper/DataTest.php
@@ -33,6 +33,9 @@ public function testIsConfigType($integrationsData, $expectedResult)
         $this->assertEquals($expectedResult, $this->dataHelper->isConfigType($integrationsData));
     }
 
+    /**
+     * @return array
+     */
     public function integrationDataProvider()
     {
         return [
diff --git a/app/code/Magento/Integration/Test/Unit/Helper/Oauth/ConsumerTest.php b/app/code/Magento/Integration/Test/Unit/Helper/Oauth/ConsumerTest.php
index ebdac167d257c..10bd5689a7c30 100644
--- a/app/code/Magento/Integration/Test/Unit/Helper/Oauth/ConsumerTest.php
+++ b/app/code/Magento/Integration/Test/Unit/Helper/Oauth/ConsumerTest.php
@@ -197,6 +197,10 @@ public function testPostToConsumer()
         $this->assertEquals($oauthVerifier, $verifier, 'Checking Oauth Verifier');
     }
 
+    /**
+     * @param $length
+     * @return bool|string
+     */
     private function _generateRandomString($length)
     {
         return substr(
diff --git a/app/code/Magento/Integration/Test/Unit/Oauth/OauthTest.php b/app/code/Magento/Integration/Test/Unit/Oauth/OauthTest.php
index 966a6b293196f..7ca29e99d9ba9 100644
--- a/app/code/Magento/Integration/Test/Unit/Oauth/OauthTest.php
+++ b/app/code/Magento/Integration/Test/Unit/Oauth/OauthTest.php
@@ -154,6 +154,10 @@ public function tearDown()
         unset($this->_oauth);
     }
 
+    /**
+     * @param array $amendments
+     * @return array
+     */
     protected function _getRequestTokenParams($amendments = [])
     {
         $requiredParams = [
@@ -231,6 +235,9 @@ public function testGetRequestTokenOutdatedConsumerKey()
         $this->_oauth->getRequestToken($this->_getRequestTokenParams(), self::REQUEST_URL);
     }
 
+    /**
+     * @param bool $isLoadable
+     */
     protected function _setupConsumer($isLoadable = true)
     {
         $this->_consumerMock->expects($this->any())->method('loadByKey')->will($this->returnSelf());
@@ -291,6 +298,9 @@ public function testGetRequestTokenOauthTimestampRefused($timestamp)
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForGetRequestTokenNonceTimestampRefusedTest()
     {
         return [
@@ -300,6 +310,10 @@ public function dataProviderForGetRequestTokenNonceTimestampRefusedTest()
         ];
     }
 
+    /**
+     * @param bool $isUsed
+     * @param int $timestamp
+     */
     protected function _setupNonce($isUsed = false, $timestamp = 0)
     {
         $nonceMock = $this->getMockBuilder(
@@ -359,6 +373,13 @@ public function testGetRequestTokenNoConsumer()
         $this->_oauth->getRequestToken($this->_getRequestTokenParams(), self::REQUEST_URL);
     }
 
+    /**
+     * @param bool $doesExist
+     * @param string $type
+     * @param int $consumerId
+     * @param null $verifier
+     * @param bool $isRevoked
+     */
     protected function _setupToken(
         $doesExist = true,
         $type = \Magento\Integration\Model\Oauth\Token::TYPE_VERIFIER,
@@ -602,6 +623,9 @@ public function testGetAccessTokenVerifierInvalid($verifier, $verifierFromToken)
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForGetAccessTokenVerifierInvalidTest()
     {
         // Verifier is not a string
@@ -785,6 +809,9 @@ public function testMissingParamForBuildAuthorizationHeader($expectedMessage, $r
         $this->_oauth->buildAuthorizationHeader($request, $requestUrl);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderMissingParamForBuildAuthorizationHeaderTest()
     {
         return [
@@ -834,6 +861,10 @@ public function dataProviderMissingParamForBuildAuthorizationHeaderTest()
         ];
     }
 
+    /**
+     * @param array $amendments
+     * @return array
+     */
     protected function _getAccessTokenRequiredParams($amendments = [])
     {
         $requiredParams = [
@@ -851,6 +882,10 @@ protected function _getAccessTokenRequiredParams($amendments = [])
         return array_merge($requiredParams, $amendments);
     }
 
+    /**
+     * @param $length
+     * @return bool|string
+     */
     private function _generateRandomString($length)
     {
         return substr(
diff --git a/app/code/Magento/MediaStorage/Test/Unit/App/MediaTest.php b/app/code/Magento/MediaStorage/Test/Unit/App/MediaTest.php
index a94bb8ec5e489..90075d11c6af3 100644
--- a/app/code/Magento/MediaStorage/Test/Unit/App/MediaTest.php
+++ b/app/code/Magento/MediaStorage/Test/Unit/App/MediaTest.php
@@ -218,6 +218,9 @@ public function testCatchException($isDeveloper, $setBodyCalls)
         $this->model->catchException($bootstrap, $exception);
     }
 
+    /**
+     * @return array
+     */
     public function catchExceptionDataProvider()
     {
         return [
diff --git a/app/code/Magento/MediaStorage/Test/Unit/Helper/File/MediaTest.php b/app/code/Magento/MediaStorage/Test/Unit/Helper/File/MediaTest.php
index 59f0d08ba3adb..d29d49eadb64b 100644
--- a/app/code/Magento/MediaStorage/Test/Unit/Helper/File/MediaTest.php
+++ b/app/code/Magento/MediaStorage/Test/Unit/Helper/File/MediaTest.php
@@ -87,6 +87,9 @@ public function testCollectFileInfo($path, $expectedDir, $expectedFile)
         $this->assertEquals($expected, $this->helper->collectFileInfo($mediaDirectory, $path));
     }
 
+    /**
+     * @return array
+     */
     public function pathDataProvider()
     {
         return [
diff --git a/app/code/Magento/MediaStorage/Test/Unit/Helper/File/Storage/DatabaseTest.php b/app/code/Magento/MediaStorage/Test/Unit/Helper/File/Storage/DatabaseTest.php
index 6ff2397f543fa..56f57a9d32c1f 100644
--- a/app/code/Magento/MediaStorage/Test/Unit/Helper/File/Storage/DatabaseTest.php
+++ b/app/code/Magento/MediaStorage/Test/Unit/Helper/File/Storage/DatabaseTest.php
@@ -75,6 +75,9 @@ public function testCheckDbUsage($storage, $expected)
         $this->assertEquals($expected, $this->helper->checkDbUsage());
     }
 
+    /**
+     * @return array
+     */
     public function checkDbUsageDataProvider()
     {
         return [
@@ -144,6 +147,9 @@ public function testSaveFile($storage, $callNum)
         $this->helper->saveFile('media-dir/filename');
     }
 
+    /**
+     * @return array
+     */
     public function updateFileDataProvider()
     {
         return [
@@ -226,6 +232,9 @@ public function testFileExists($storage, $callNum, $expected)
         $this->assertEquals($expected, $this->helper->fileExists('media-dir/file'));
     }
 
+    /**
+     * @return array
+     */
     public function fileExistsDataProvider()
     {
         return [
@@ -264,6 +273,9 @@ public function testGetUniqueFilename($storage, $callNum, $expected)
         $this->assertSame($expected, $this->helper->getUniqueFilename('media-dir/directory/', 'filename.ext'));
     }
 
+    /**
+     * @return array
+     */
     public function getUniqueFilenameDataProvider()
     {
         return [
@@ -308,6 +320,9 @@ public function testSaveFileToFileSystem($expected, $storage, $callNum, $id = 0,
         $this->assertEquals($expected, $this->helper->saveFileToFilesystem('media-dir/filename'));
     }
 
+    /**
+     * @return array
+     */
     public function saveFileToFileSystemDataProvider()
     {
         return [
@@ -430,6 +445,9 @@ public function testSaveUploadedFile($result, $expected, $expectedFullPath, $sto
         $this->assertEquals($expected, $this->helper->saveUploadedFile($result));
     }
 
+    /**
+     * @return array
+     */
     public function saveUploadedFileDataProvider()
     {
         return [
diff --git a/app/code/Magento/MediaStorage/Test/Unit/Helper/File/StorageTest.php b/app/code/Magento/MediaStorage/Test/Unit/Helper/File/StorageTest.php
index 8725bf1f0f02f..d1ae631a351c3 100644
--- a/app/code/Magento/MediaStorage/Test/Unit/Helper/File/StorageTest.php
+++ b/app/code/Magento/MediaStorage/Test/Unit/Helper/File/StorageTest.php
@@ -77,6 +77,9 @@ public function testIsInternalStorage($storage, $callNum, $expected)
         $this->assertEquals($expected, $this->helper->isInternalStorage($storage));
     }
 
+    /**
+     * @return array
+     */
     public function isInternalStorageDataProvider()
     {
         return [
@@ -146,6 +149,9 @@ public function testProcessStorageFile($expected, $storage, $callNum, $callSaveF
         $this->assertEquals($expected, $this->helper->processStorageFile($filename));
     }
 
+    /**
+     * @return array
+     */
     public function processStorageFileDataProvider()
     {
         return [
diff --git a/app/code/Magento/MessageQueue/Test/Unit/_files/pid_consumer_functions_mocks.php b/app/code/Magento/MessageQueue/Test/Unit/_files/pid_consumer_functions_mocks.php
index 042c6012f80b3..33cd2757e4f5a 100644
--- a/app/code/Magento/MessageQueue/Test/Unit/_files/pid_consumer_functions_mocks.php
+++ b/app/code/Magento/MessageQueue/Test/Unit/_files/pid_consumer_functions_mocks.php
@@ -5,6 +5,10 @@
  */
 namespace Magento\MessageQueue\Model\Cron\ConsumersRunner;
 
+/**
+ * @param $pid
+ * @return bool|int
+ */
 function posix_getpgid($pid)
 {
     if ($pid === 11111) {
@@ -14,6 +18,11 @@ function posix_getpgid($pid)
     return false;
 }
 
+/**
+ * @param $command
+ * @param array|null $output
+ * @param null $return_var
+ */
 function exec($command, array &$output = null, &$return_var = null)
 {
     $output = ['PID TTY TIME CMD'];
diff --git a/app/code/Magento/Multishipping/Test/Unit/Block/Checkout/Address/SelectTest.php b/app/code/Magento/Multishipping/Test/Unit/Block/Checkout/Address/SelectTest.php
index 7d7307da05cf1..9fe5125eb8a53 100644
--- a/app/code/Magento/Multishipping/Test/Unit/Block/Checkout/Address/SelectTest.php
+++ b/app/code/Magento/Multishipping/Test/Unit/Block/Checkout/Address/SelectTest.php
@@ -114,6 +114,9 @@ public function testIsAddressDefaultShipping($id, $expectedValue)
         $this->assertEquals($expectedValue, $this->block->isAddressDefaultShipping($this->addressMock));
     }
 
+    /**
+     * @return array
+     */
     public function isDefaultAddressDataProvider()
     {
         return [
diff --git a/app/code/Magento/Multishipping/Test/Unit/Controller/Checkout/Address/NewShippingTest.php b/app/code/Magento/Multishipping/Test/Unit/Controller/Checkout/Address/NewShippingTest.php
index 00940c426a6ac..9ffef2832a6bc 100644
--- a/app/code/Magento/Multishipping/Test/Unit/Controller/Checkout/Address/NewShippingTest.php
+++ b/app/code/Magento/Multishipping/Test/Unit/Controller/Checkout/Address/NewShippingTest.php
@@ -163,6 +163,9 @@ public function testExecute($backUrl, $shippingAddress, $url)
         $this->controller->execute();
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/NewRelicReporting/Test/Unit/Model/Apm/DeploymentsTest.php b/app/code/Magento/NewRelicReporting/Test/Unit/Model/Apm/DeploymentsTest.php
index eb665773d5f4b..1193ac088633f 100644
--- a/app/code/Magento/NewRelicReporting/Test/Unit/Model/Apm/DeploymentsTest.php
+++ b/app/code/Magento/NewRelicReporting/Test/Unit/Model/Apm/DeploymentsTest.php
@@ -252,6 +252,9 @@ public function testSetDeploymentRequestFail()
         );
     }
 
+    /**
+     * @return array
+     */
     private function getDataVariables()
     {
         $description = 'Event description';
diff --git a/app/code/Magento/NewRelicReporting/Test/Unit/Model/Module/CollectTest.php b/app/code/Magento/NewRelicReporting/Test/Unit/Model/Module/CollectTest.php
index 1c3b9e08f2e7e..8d8e6255ab8d3 100644
--- a/app/code/Magento/NewRelicReporting/Test/Unit/Model/Module/CollectTest.php
+++ b/app/code/Magento/NewRelicReporting/Test/Unit/Model/Module/CollectTest.php
@@ -360,6 +360,9 @@ public function testGetModuleDataRefreshOrStatement($data)
         );
     }
 
+    /**
+     * @return array
+     */
     public function itemDataProvider()
     {
         return [
diff --git a/app/code/Magento/NewRelicReporting/Test/Unit/Model/Observer/ReportProductSavedToNewRelicTest.php b/app/code/Magento/NewRelicReporting/Test/Unit/Model/Observer/ReportProductSavedToNewRelicTest.php
index 20791511324bf..ba5f13d247fe0 100644
--- a/app/code/Magento/NewRelicReporting/Test/Unit/Model/Observer/ReportProductSavedToNewRelicTest.php
+++ b/app/code/Magento/NewRelicReporting/Test/Unit/Model/Observer/ReportProductSavedToNewRelicTest.php
@@ -140,6 +140,9 @@ public function testReportProductUpdatedToNewRelic($isNewObject)
         $this->model->execute($eventObserver);
     }
 
+    /**
+     * @return array
+     */
     public function actionDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Newsletter/Test/Unit/Model/SubscriberTest.php b/app/code/Magento/Newsletter/Test/Unit/Model/SubscriberTest.php
index 5a4032dc4dffd..39beade9346d4 100644
--- a/app/code/Magento/Newsletter/Test/Unit/Model/SubscriberTest.php
+++ b/app/code/Magento/Newsletter/Test/Unit/Model/SubscriberTest.php
@@ -363,6 +363,9 @@ public function testReceived()
         $this->assertEquals($this->subscriber, $this->subscriber->received($queue));
     }
 
+    /**
+     * @return $this
+     */
     protected function sendEmailCheck()
     {
         $storeModel = $this->getMockBuilder(\Magento\Store\Model\Store::class)
diff --git a/app/code/Magento/Newsletter/Test/Unit/Model/TemplateTest.php b/app/code/Magento/Newsletter/Test/Unit/Model/TemplateTest.php
index 5773c77c5f7f9..52bb803dd377f 100644
--- a/app/code/Magento/Newsletter/Test/Unit/Model/TemplateTest.php
+++ b/app/code/Magento/Newsletter/Test/Unit/Model/TemplateTest.php
@@ -401,6 +401,9 @@ public function testIsValidForSend($senderName, $senderEmail, $templateSubject,
         $this->assertEquals($expectedValue, $model->isValidForSend());
     }
 
+    /**
+     * @return array
+     */
     public function isValidForSendDataProvider()
     {
         return [
diff --git a/app/code/Magento/OfflinePayments/Test/Unit/Model/CheckmoConfigProviderTest.php b/app/code/Magento/OfflinePayments/Test/Unit/Model/CheckmoConfigProviderTest.php
index 7509ff03c3780..8d65146ec102b 100644
--- a/app/code/Magento/OfflinePayments/Test/Unit/Model/CheckmoConfigProviderTest.php
+++ b/app/code/Magento/OfflinePayments/Test/Unit/Model/CheckmoConfigProviderTest.php
@@ -63,6 +63,9 @@ public function testGetConfig($isAvailable, $mailingAddress, $payableTo, $result
         $this->assertEquals($result, $this->model->getConfig());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderGetConfig()
     {
         $checkmoCode = Checkmo::PAYMENT_METHOD_CHECKMO_CODE;
diff --git a/app/code/Magento/OfflinePayments/Test/Unit/Model/InstructionsConfigProviderTest.php b/app/code/Magento/OfflinePayments/Test/Unit/Model/InstructionsConfigProviderTest.php
index 120a7eb6ed88f..97a64d8ab59b9 100644
--- a/app/code/Magento/OfflinePayments/Test/Unit/Model/InstructionsConfigProviderTest.php
+++ b/app/code/Magento/OfflinePayments/Test/Unit/Model/InstructionsConfigProviderTest.php
@@ -82,6 +82,9 @@ public function testGetConfig($isOneAvailable, $instructionsOne, $isTwoAvailable
         $this->assertEquals($result, $this->model->getConfig());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderGetConfig()
     {
         $oneCode = Banktransfer::PAYMENT_METHOD_BANKTRANSFER_CODE;
diff --git a/app/code/Magento/OfflineShipping/Test/Unit/Model/Plugin/Checkout/Block/Cart/ShippingTest.php b/app/code/Magento/OfflineShipping/Test/Unit/Model/Plugin/Checkout/Block/Cart/ShippingTest.php
index 185f393ad4d0b..5f0894874ca3c 100644
--- a/app/code/Magento/OfflineShipping/Test/Unit/Model/Plugin/Checkout/Block/Cart/ShippingTest.php
+++ b/app/code/Magento/OfflineShipping/Test/Unit/Model/Plugin/Checkout/Block/Cart/ShippingTest.php
@@ -52,6 +52,9 @@ public function testAfterGetStateActive($scopeConfigMockReturnValue, $result, $a
         $this->assertEquals($assertResult, $this->model->afterIsStateActive($subjectMock, $result));
     }
 
+    /**
+     * @return array
+     */
     public function afterGetStateActiveDataProvider()
     {
         return [
diff --git a/app/code/Magento/OfflineShipping/Test/Unit/Model/ResourceModel/Carrier/Tablerate/CSV/RowParserTest.php b/app/code/Magento/OfflineShipping/Test/Unit/Model/ResourceModel/Carrier/Tablerate/CSV/RowParserTest.php
index 4807d4956d266..8c34e9a0d6510 100644
--- a/app/code/Magento/OfflineShipping/Test/Unit/Model/ResourceModel/Carrier/Tablerate/CSV/RowParserTest.php
+++ b/app/code/Magento/OfflineShipping/Test/Unit/Model/ResourceModel/Carrier/Tablerate/CSV/RowParserTest.php
@@ -128,6 +128,9 @@ public function testParseWithException(array $rowData, $conditionFullName, array
         throw $exception;
     }
 
+    /**
+     * @return array
+     */
     public function parseWithExceptionDataProvider()
     {
         $rowData = ['a', 'b', 'c', 'd', 'e'];
diff --git a/app/code/Magento/OfflineShipping/Test/Unit/Model/SalesRule/CalculatorTest.php b/app/code/Magento/OfflineShipping/Test/Unit/Model/SalesRule/CalculatorTest.php
index b13a46a8fcdf0..2a886f20c42a7 100644
--- a/app/code/Magento/OfflineShipping/Test/Unit/Model/SalesRule/CalculatorTest.php
+++ b/app/code/Magento/OfflineShipping/Test/Unit/Model/SalesRule/CalculatorTest.php
@@ -20,6 +20,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return bool
+     */
     public function testProcessFreeShipping()
     {
         $addressMock = $this->getMockBuilder(\Magento\Quote\Model\Quote\Address::class)
diff --git a/app/code/Magento/PageCache/Test/Unit/Block/JavascriptTest.php b/app/code/Magento/PageCache/Test/Unit/Block/JavascriptTest.php
index a1c66c67b5524..42a9086daa442 100644
--- a/app/code/Magento/PageCache/Test/Unit/Block/JavascriptTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Block/JavascriptTest.php
@@ -130,6 +130,9 @@ public function testGetScriptOptions($isSecure, $url, $expectedResult)
         $this->assertRegExp($expectedResult, $this->blockJavascript->getScriptOptions());
     }
 
+    /**
+     * @return array
+     */
     public function getScriptOptionsDataProvider()
     {
         return [
@@ -193,6 +196,9 @@ public function testGetScriptOptionsPrivateContent($url, $route, $controller, $a
         $this->assertRegExp($expectedResult, $this->blockJavascript->getScriptOptions());
     }
 
+    /**
+     * @return array
+     */
     public function getScriptOptionsPrivateContentDataProvider()
     {
         // @codingStandardsIgnoreStart
diff --git a/app/code/Magento/PageCache/Test/Unit/Controller/Block/EsiTest.php b/app/code/Magento/PageCache/Test/Unit/Controller/Block/EsiTest.php
index 387b3d031b70e..32964a3564999 100644
--- a/app/code/Magento/PageCache/Test/Unit/Controller/Block/EsiTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Controller/Block/EsiTest.php
@@ -143,6 +143,9 @@ public function testExecute($blockClass, $shouldSetHeaders)
         $this->action->execute();
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/PageCache/Test/Unit/Model/App/FrontController/BuiltinPluginTest.php b/app/code/Magento/PageCache/Test/Unit/Model/App/FrontController/BuiltinPluginTest.php
index 2811cb5316dc6..db0edfa6bd779 100644
--- a/app/code/Magento/PageCache/Test/Unit/Model/App/FrontController/BuiltinPluginTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Model/App/FrontController/BuiltinPluginTest.php
@@ -226,6 +226,9 @@ public function testAroundDispatchDisabled($state)
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/PageCache/Test/Unit/Model/App/PageCachePluginTest.php b/app/code/Magento/PageCache/Test/Unit/Model/App/PageCachePluginTest.php
index 033eb2501865b..2e69fdaf47910 100644
--- a/app/code/Magento/PageCache/Test/Unit/Model/App/PageCachePluginTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Model/App/PageCachePluginTest.php
@@ -57,6 +57,9 @@ public function testAfterSaveDecompression($data, $initResult)
         $this->assertSame($data, $this->plugin->afterLoad($this->subjectMock, $initResult));
     }
 
+    /**
+     * @return array
+     */
     public function afterSaveDataProvider()
     {
         return [
diff --git a/app/code/Magento/PageCache/Test/Unit/Model/App/Response/HttpPluginTest.php b/app/code/Magento/PageCache/Test/Unit/Model/App/Response/HttpPluginTest.php
index c9231f118fc75..59591c8ee957f 100644
--- a/app/code/Magento/PageCache/Test/Unit/Model/App/Response/HttpPluginTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Model/App/Response/HttpPluginTest.php
@@ -26,6 +26,9 @@ public function testBeforeSendResponse($responseInstanceClass, $sendVaryCalled)
         $plugin->beforeSendResponse($responseMock);
     }
 
+    /**
+     * @return array
+     */
     public function beforeSendResponseDataProvider()
     {
         return [
diff --git a/app/code/Magento/PageCache/Test/Unit/Model/Cache/ServerTest.php b/app/code/Magento/PageCache/Test/Unit/Model/Cache/ServerTest.php
index 2321a951aafe8..a57effe1f31ad 100644
--- a/app/code/Magento/PageCache/Test/Unit/Model/Cache/ServerTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Model/Cache/ServerTest.php
@@ -90,6 +90,9 @@ public function testGetUris(
         $this->assertEquals($uris, $this->model->getUris());
     }
 
+    /**
+     * @return array
+     */
     public function getUrisDataProvider()
     {
         return [
diff --git a/app/code/Magento/PageCache/Test/Unit/Model/Layout/LayoutPluginTest.php b/app/code/Magento/PageCache/Test/Unit/Model/Layout/LayoutPluginTest.php
index 8c04db7cb8390..6c39fe1e7979c 100644
--- a/app/code/Magento/PageCache/Test/Unit/Model/Layout/LayoutPluginTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Model/Layout/LayoutPluginTest.php
@@ -70,6 +70,9 @@ public function testAfterGenerateXml($cacheState, $layoutIsCacheable)
         $this->assertSame($result, $output);
     }
 
+    /**
+     * @return array
+     */
     public function afterGenerateXmlDataProvider()
     {
         return [
@@ -112,6 +115,9 @@ public function testAfterGetOutput($cacheState, $layoutIsCacheable, $expectedTag
         $this->assertSame($output, $html);
     }
 
+    /**
+     * @return array
+     */
     public function afterGetOutputDataProvider()
     {
         $tags = 'identity1,identity2';
diff --git a/app/code/Magento/PageCache/Test/Unit/Observer/FlushCacheByTagsTest.php b/app/code/Magento/PageCache/Test/Unit/Observer/FlushCacheByTagsTest.php
index 924c30439fddd..8019c6b2e810f 100644
--- a/app/code/Magento/PageCache/Test/Unit/Observer/FlushCacheByTagsTest.php
+++ b/app/code/Magento/PageCache/Test/Unit/Observer/FlushCacheByTagsTest.php
@@ -81,6 +81,9 @@ public function testExecute($cacheState)
         $this->assertNull($result);
     }
 
+    /**
+     * @return array
+     */
     public function flushCacheByTagsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Block/InfoTest.php b/app/code/Magento/Payment/Test/Unit/Block/InfoTest.php
index 469d7971e21a9..5f9238ca4360a 100644
--- a/app/code/Magento/Payment/Test/Unit/Block/InfoTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Block/InfoTest.php
@@ -83,6 +83,9 @@ public function testGetIsSecureMode($isSecureMode, $methodInstance, $store, $sto
         $this->assertEquals($result, $expectedResult);
     }
 
+    /**
+     * @return array
+     */
     public function getIsSecureModeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Gateway/Data/Order/AddressAdapterTest.php b/app/code/Magento/Payment/Test/Unit/Gateway/Data/Order/AddressAdapterTest.php
index 1cf19ff9292e9..faf4818965386 100644
--- a/app/code/Magento/Payment/Test/Unit/Gateway/Data/Order/AddressAdapterTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Gateway/Data/Order/AddressAdapterTest.php
@@ -54,6 +54,9 @@ public function testStreetLine1($street, $expected)
         $this->assertEquals($expected, $this->model->getStreetLine1());
     }
 
+    /**
+     * @return array
+     */
     public function streetLine1DataProvider()
     {
         return [
@@ -73,6 +76,9 @@ public function testStreetLine2($street, $expected)
         $this->assertEquals($expected, $this->model->getStreetLine2());
     }
 
+    /**
+     * @return array
+     */
     public function streetLine2DataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Gateway/Data/Quote/AddressAdapterTest.php b/app/code/Magento/Payment/Test/Unit/Gateway/Data/Quote/AddressAdapterTest.php
index 751d8c51b4410..1f5b1c2d87053 100644
--- a/app/code/Magento/Payment/Test/Unit/Gateway/Data/Quote/AddressAdapterTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Gateway/Data/Quote/AddressAdapterTest.php
@@ -54,6 +54,9 @@ public function testStreetLine1($street, $expected)
         $this->assertEquals($expected, $this->model->getStreetLine1());
     }
 
+    /**
+     * @return array
+     */
     public function streetLine1DataProvider()
     {
         return [
@@ -73,6 +76,9 @@ public function testStreetLine2($street, $expected)
         $this->assertEquals($expected, $this->model->getStreetLine2());
     }
 
+    /**
+     * @return array
+     */
     public function streetLine2DataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Gateway/Validator/CountryValidatorTest.php b/app/code/Magento/Payment/Test/Unit/Gateway/Validator/CountryValidatorTest.php
index 3054a705373e4..7259c59e5a1a5 100644
--- a/app/code/Magento/Payment/Test/Unit/Gateway/Validator/CountryValidatorTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Gateway/Validator/CountryValidatorTest.php
@@ -68,6 +68,9 @@ public function testValidateAllowspecificTrue($storeId, $country, $allowspecific
         $this->assertSame($this->resultMock, $this->model->validate($validationSubject));
     }
 
+    /**
+     * @return array
+     */
     public function validateAllowspecificTrueDataProvider()
     {
         return [
@@ -96,6 +99,9 @@ public function testValidateAllowspecificFalse($storeId, $allowspecific, $isVali
         $this->assertSame($this->resultMock, $this->model->validate($validationSubject));
     }
 
+    /**
+     * @return array
+     */
     public function validateAllowspecificFalseDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Gateway/Validator/ResultTest.php b/app/code/Magento/Payment/Test/Unit/Gateway/Validator/ResultTest.php
index fb81137dea42b..562835e3199f1 100644
--- a/app/code/Magento/Payment/Test/Unit/Gateway/Validator/ResultTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Gateway/Validator/ResultTest.php
@@ -29,6 +29,9 @@ public function testResult($isValid, $failsDescription, $expectedIsValid, $expec
         $this->assertEquals($expectedFailsDescription, $this->model->getFailsDescription());
     }
 
+    /**
+     * @return array
+     */
     public function resultDataProvider()
     {
         $phraseMock = $this->getMockBuilder(\Magento\Framework\Phrase::class)->disableOriginalConstructor()->getMock();
diff --git a/app/code/Magento/Payment/Test/Unit/Helper/DataTest.php b/app/code/Magento/Payment/Test/Unit/Helper/DataTest.php
index 931c2b5fd93d5..3752e82fd1e5b 100644
--- a/app/code/Magento/Payment/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Helper/DataTest.php
@@ -253,6 +253,9 @@ public function testGetInfoBlockHtml()
         $this->assertEquals($blockHtml, $this->helper->getInfoBlockHtml($infoMock, $storeId));
     }
 
+    /**
+     * @return array
+     */
     public function getSortMethodsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/FactoryTest.php b/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/FactoryTest.php
index c49f3da315908..64069ff4a1941 100644
--- a/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/FactoryTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/FactoryTest.php
@@ -40,6 +40,9 @@ public function testCreate($salesModelClass, $expectedType)
         $this->assertEquals('some value', $this->_model->create($salesModel));
     }
 
+    /**
+     * @return array
+     */
     public function createDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/OrderTest.php b/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/OrderTest.php
index 7594d9ce501ac..3e3c4226d4fbe 100644
--- a/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/OrderTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/OrderTest.php
@@ -19,6 +19,9 @@ protected function setUp()
         $this->_model = new \Magento\Payment\Model\Cart\SalesModel\Order($this->_orderMock);
     }
 
+    /**
+     * @return array
+     */
     public function gettersDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/QuoteTest.php b/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/QuoteTest.php
index 95271569e994e..bdcc89840ac19 100644
--- a/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/QuoteTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Model/Cart/SalesModel/QuoteTest.php
@@ -84,6 +84,9 @@ public function testGetAllItems($pItem, $name, $qty, $price)
         $this->assertEquals($expected, $this->_model->getAllItems());
     }
 
+    /**
+     * @return array
+     */
     public function getAllItemsDataProvider()
     {
         return [
@@ -135,6 +138,9 @@ public function testGetter($isVirtual, $getterMethod)
         $this->assertEquals($getterMethod, $model->{$getterMethod}());
     }
 
+    /**
+     * @return array
+     */
     public function getterDataProvider()
     {
         return [
diff --git a/app/code/Magento/Payment/Test/Unit/Model/ConfigTest.php b/app/code/Magento/Payment/Test/Unit/Model/ConfigTest.php
index 8ac5bb61e7f8f..584da622b1aad 100644
--- a/app/code/Magento/Payment/Test/Unit/Model/ConfigTest.php
+++ b/app/code/Magento/Payment/Test/Unit/Model/ConfigTest.php
@@ -142,6 +142,9 @@ public function testGetActiveMethods($isActive)
         static::assertEquals($isActive ? ['active_method' => $adapter] : [], $this->config->getActiveMethods());
     }
 
+    /**
+     * @return array
+     */
     public function getActiveMethodsDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Field/CountryTest.php b/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Field/CountryTest.php
index 39fc0c2dae5eb..d8487e63c6eca 100644
--- a/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Field/CountryTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Field/CountryTest.php
@@ -114,6 +114,9 @@ public function testRender($requestCountry, $requestDefaultCountry, $canUseDefau
         $this->_model->render($this->_element);
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/GroupTest.php b/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/GroupTest.php
index 461847771febd..cfdfe17b1e004 100644
--- a/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/GroupTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/GroupTest.php
@@ -91,6 +91,9 @@ public function testIsCollapseState($expanded, $expected)
         );
     }
 
+    /**
+     * @return array
+     */
     public function isCollapseStateDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/PaymentTest.php b/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/PaymentTest.php
index d9ddd277a7df1..df9638ef47135 100644
--- a/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/PaymentTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Block/Adminhtml/System/Config/Fieldset/PaymentTest.php
@@ -85,6 +85,9 @@ public function testIsPaymentEnabled($groupConfig, $expected)
         $this->assertContains($expected, $html);
     }
 
+    /**
+     * @return array
+     */
     public function isPaymentEnabledDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Block/Express/ReviewTest.php b/app/code/Magento/Paypal/Test/Unit/Block/Express/ReviewTest.php
index 9a7a87b366fcf..27ed799a4adb7 100644
--- a/app/code/Magento/Paypal/Test/Unit/Block/Express/ReviewTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Block/Express/ReviewTest.php
@@ -84,6 +84,9 @@ public function testGetViewFileUrl($isSecure)
         $this->assertEquals('result url', $this->model->getViewFileUrl('some file'));
     }
 
+    /**
+     * @return array
+     */
     public function getViewFileUrlDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Paypal/Test/Unit/Controller/Express/PlaceOrderTest.php b/app/code/Magento/Paypal/Test/Unit/Controller/Express/PlaceOrderTest.php
index 54d5acfce9f5f..f915dca23735d 100644
--- a/app/code/Magento/Paypal/Test/Unit/Controller/Express/PlaceOrderTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Controller/Express/PlaceOrderTest.php
@@ -36,6 +36,9 @@ protected function _expectRedirect($path = '*/*/review')
             ->with($this->anything(), $path, []);
     }
 
+    /**
+     * @return array
+     */
     public function trueFalseDataProvider()
     {
         return [[true], [false]];
@@ -79,6 +82,9 @@ public function testExecuteProcessableException($code, $paymentAction = null)
         $this->model->execute();
     }
 
+    /**
+     * @return array
+     */
     public function executeProcessableExceptionDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Controller/Express/ReturnActionTest.php b/app/code/Magento/Paypal/Test/Unit/Controller/Express/ReturnActionTest.php
index fd0182bb88c06..65250ccce08bd 100644
--- a/app/code/Magento/Paypal/Test/Unit/Controller/Express/ReturnActionTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Controller/Express/ReturnActionTest.php
@@ -34,6 +34,9 @@ public function testExecuteAuthorizationRetrial()
         $this->model->execute();
     }
 
+    /**
+     * @return array
+     */
     public function trueFalseDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Paypal/Test/Unit/Controller/Express/StartTest.php b/app/code/Magento/Paypal/Test/Unit/Controller/Express/StartTest.php
index 5ca7156b6f01f..36a9ae3bd5cf9 100644
--- a/app/code/Magento/Paypal/Test/Unit/Controller/Express/StartTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Controller/Express/StartTest.php
@@ -37,6 +37,9 @@ public function testStartAction($buttonParam)
         $this->model->execute();
     }
 
+    /**
+     * @return array
+     */
     public function startActionDataProvider()
     {
         return [['1'], [null]];
diff --git a/app/code/Magento/Paypal/Test/Unit/Helper/BackendTest.php b/app/code/Magento/Paypal/Test/Unit/Helper/BackendTest.php
index fd8a8a3c41f11..ffa1bf027ab57 100644
--- a/app/code/Magento/Paypal/Test/Unit/Helper/BackendTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Helper/BackendTest.php
@@ -92,6 +92,9 @@ public function testGetConfigurationCountryCodeFromConfig($request)
         $this->configurationCountryCodeAssertResult('GB');
     }
 
+    /**
+     * @return array
+     */
     public function getConfigurationCountryCodeFromConfigDataProvider()
     {
         return [
@@ -116,6 +119,9 @@ public function testGetConfigurationCountryCodeFromDefault($request, $config, $d
         $this->configurationCountryCodeAssertResult($default);
     }
 
+    /**
+     * @return array
+     */
     public function getConfigurationCountryCodeFromDefaultDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Model/AbstractConfigTest.php b/app/code/Magento/Paypal/Test/Unit/Model/AbstractConfigTest.php
index bb25bea63a8bc..9ec9318212614 100644
--- a/app/code/Magento/Paypal/Test/Unit/Model/AbstractConfigTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Model/AbstractConfigTest.php
@@ -273,6 +273,9 @@ public function testIsMethodAvailable($methodCode, $expectedFlag)
         $this->config->isMethodAvailable($methodCode);
     }
 
+    /**
+     * @return array
+     */
     public function isMethodAvailableDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Model/Api/NvpTest.php b/app/code/Magento/Paypal/Test/Unit/Model/Api/NvpTest.php
index 2ef08e4d4226b..fcc7766ec298b 100644
--- a/app/code/Magento/Paypal/Test/Unit/Model/Api/NvpTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Model/Api/NvpTest.php
@@ -145,6 +145,9 @@ public function testCall($response, $processableErrors, $exception, $exceptionMe
         $this->model->call('some method', ['data' => 'some data']);
     }
 
+    /**
+     * @return array
+     */
     public function callDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Model/CartTest.php b/app/code/Magento/Paypal/Test/Unit/Model/CartTest.php
index f9bb74dba5b53..0f787f0f513a1 100644
--- a/app/code/Magento/Paypal/Test/Unit/Model/CartTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Model/CartTest.php
@@ -85,6 +85,9 @@ public function testInvalidGetAllItems($items)
         $this->assertEquals(0.3, $this->_model->getDiscount());
     }
 
+    /**
+     * @return array
+     */
     public function invalidGetAllItemsDataProvider()
     {
         return [
@@ -150,6 +153,9 @@ public function testInvalidTotalsGetAllItems($values, $transferDiscount)
         $this->assertEquals($transferDiscount ? 0.0 : $values['base_discount_amount'], $this->_model->getDiscount());
     }
 
+    /**
+     * @return array
+     */
     public function invalidTotalsGetAllItemsDataProvider()
     {
         return [
@@ -222,6 +228,9 @@ public function testInvalidGetAmounts($values, $transferDiscount, $transferShipp
         $this->assertEquals([Cart::AMOUNT_SUBTOTAL => $expectedSubtotal], $result);
     }
 
+    /**
+     * @return array
+     */
     public function invalidGetAmountsDataProvider()
     {
         $data = [];
diff --git a/app/code/Magento/Paypal/Test/Unit/Model/Config/Structure/PaymentSectionModifierTest.php b/app/code/Magento/Paypal/Test/Unit/Model/Config/Structure/PaymentSectionModifierTest.php
index 6a5b2676014cb..57534345f2541 100644
--- a/app/code/Magento/Paypal/Test/Unit/Model/Config/Structure/PaymentSectionModifierTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Model/Config/Structure/PaymentSectionModifierTest.php
@@ -175,6 +175,9 @@ private function fetchAllAvailableGroups($structure)
         return $availableGroups;
     }
 
+    /**
+     * @return mixed
+     */
     public function caseProvider()
     {
         return include __DIR__ . '/_files/payment_section_structure_variations.php';
diff --git a/app/code/Magento/Paypal/Test/Unit/Model/Hostedpro/RequestTest.php b/app/code/Magento/Paypal/Test/Unit/Model/Hostedpro/RequestTest.php
index 2a3ac1adbc07a..ed834ae2b9c01 100644
--- a/app/code/Magento/Paypal/Test/Unit/Model/Hostedpro/RequestTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Model/Hostedpro/RequestTest.php
@@ -371,6 +371,9 @@ public function amountWithoutTaxDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function amountWithoutTaxZeroSubtotalDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Model/PayflowproTest.php b/app/code/Magento/Paypal/Test/Unit/Model/PayflowproTest.php
index c9689c8601a02..3e8af6b2ee766 100644
--- a/app/code/Magento/Paypal/Test/Unit/Model/PayflowproTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Model/PayflowproTest.php
@@ -179,6 +179,9 @@ public function testSetTransStatus($response, $paymentExpected)
         $this->assertEquals($paymentExpected->getData(), $payment->getData());
     }
 
+    /**
+     * @return array
+     */
     public function setTransStatusDataProvider()
     {
         return [
diff --git a/app/code/Magento/Paypal/Test/Unit/Observer/AddBillingAgreementToSessionObserverTest.php b/app/code/Magento/Paypal/Test/Unit/Observer/AddBillingAgreementToSessionObserverTest.php
index c1947c522b118..8e18b680ce9cd 100644
--- a/app/code/Magento/Paypal/Test/Unit/Observer/AddBillingAgreementToSessionObserverTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Observer/AddBillingAgreementToSessionObserverTest.php
@@ -166,6 +166,9 @@ public function testAddBillingAgreementToSession($isValid)
         $this->_model->execute($this->_observer);
     }
 
+    /**
+     * @return array
+     */
     public function addBillingAgreementToSessionDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Paypal/Test/Unit/Observer/RestrictAdminBillingAgreementUsageObserverTest.php b/app/code/Magento/Paypal/Test/Unit/Observer/RestrictAdminBillingAgreementUsageObserverTest.php
index b61e66167661e..3e68f42fd5a66 100644
--- a/app/code/Magento/Paypal/Test/Unit/Observer/RestrictAdminBillingAgreementUsageObserverTest.php
+++ b/app/code/Magento/Paypal/Test/Unit/Observer/RestrictAdminBillingAgreementUsageObserverTest.php
@@ -46,6 +46,9 @@ protected function setUp()
         $this->_model = new \Magento\Paypal\Observer\RestrictAdminBillingAgreementUsageObserver($this->_authorization);
     }
 
+    /**
+     * @return array
+     */
     public function restrictAdminBillingAgreementUsageDataProvider()
     {
         return [
diff --git a/app/code/Magento/Persistent/Test/Unit/Observer/RefreshCustomerDataTest.php b/app/code/Magento/Persistent/Test/Unit/Observer/RefreshCustomerDataTest.php
index da60f8a3162ac..ca415a8fab5b3 100644
--- a/app/code/Magento/Persistent/Test/Unit/Observer/RefreshCustomerDataTest.php
+++ b/app/code/Magento/Persistent/Test/Unit/Observer/RefreshCustomerDataTest.php
@@ -80,6 +80,9 @@ public function testBeforeStart($result, $callCount)
         $this->observer->execute($observerMock);
     }
 
+    /**
+     * @return array
+     */
     public function beforeStartDataProvider()
     {
         return [
diff --git a/app/code/Magento/ProductAlert/Test/Unit/Block/Email/StockTest.php b/app/code/Magento/ProductAlert/Test/Unit/Block/Email/StockTest.php
index c948ceabd7a29..c5872701ef9c8 100644
--- a/app/code/Magento/ProductAlert/Test/Unit/Block/Email/StockTest.php
+++ b/app/code/Magento/ProductAlert/Test/Unit/Block/Email/StockTest.php
@@ -65,6 +65,9 @@ public function testGetFilteredContent($contentToFilter, $contentFiltered)
         $this->assertEquals($contentFiltered, $this->_block->getFilteredContent($contentToFilter));
     }
 
+    /**
+     * @return array
+     */
     public function getFilteredContentDataProvider()
     {
         return [
diff --git a/app/code/Magento/ProductAlert/Test/Unit/Block/Product/View/StockTest.php b/app/code/Magento/ProductAlert/Test/Unit/Block/Product/View/StockTest.php
index 886ed6eb3fe27..b9f28bde15d07 100644
--- a/app/code/Magento/ProductAlert/Test/Unit/Block/Product/View/StockTest.php
+++ b/app/code/Magento/ProductAlert/Test/Unit/Block/Product/View/StockTest.php
@@ -126,6 +126,9 @@ public function testSetTemplateStockUrlNotAllowed($stockAlertAllowed, $productAv
         $this->assertNull($this->_block->getSignupUrl());
     }
 
+    /**
+     * @return array
+     */
     public function setTemplateStockUrlNotAllowedDataProvider()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalManagementTest.php b/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalManagementTest.php
index 287d2b3c8d4f0..d6338eb428657 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalManagementTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalManagementTest.php
@@ -92,6 +92,9 @@ public function testCollectTotalsNoShipping($shippingCarrierCode, $shippingMetho
         );
     }
 
+    /**
+     * @return array
+     */
     public function collectTotalsShippingData()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalRepositoryTest.php b/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalRepositoryTest.php
index b1cec90e61e01..1e999cb5e523e 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalRepositoryTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Cart/CartTotalRepositoryTest.php
@@ -163,6 +163,9 @@ public function testGet($isVirtual, $getAddressType)
         $this->assertEquals($totalsMock, $this->model->get($cartId));
     }
 
+    /**
+     * @return array
+     */
     public function getDataProvider()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Product/Plugin/UpdateQuoteItemsTest.php b/app/code/Magento/Quote/Test/Unit/Model/Product/Plugin/UpdateQuoteItemsTest.php
index 38f303dd23582..cd7a54455a994 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Product/Plugin/UpdateQuoteItemsTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Product/Plugin/UpdateQuoteItemsTest.php
@@ -49,6 +49,9 @@ public function testAfterUpdate($originalPrice, $newPrice, $callMethod, $tierPri
         $this->assertEquals($result, $productResourceMock);
     }
 
+    /**
+     * @return array
+     */
     public function aroundUpdateDataProvider()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/Total/SubtotalTest.php b/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/Total/SubtotalTest.php
index 78a87b59d9f62..c4a8081fbb8fa 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/Total/SubtotalTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/Total/SubtotalTest.php
@@ -49,6 +49,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function collectDataProvider()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/TotalTest.php b/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/TotalTest.php
index f884981424d65..e1971fa9833a3 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/TotalTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Quote/Address/TotalTest.php
@@ -49,6 +49,9 @@ public function testSetTotalAmount($code, $amount, $storedCode)
         $this->assertSame($this->model, $result);
     }
 
+    /**
+     * @return array
+     */
     public function setTotalAmountDataProvider()
     {
         return [
@@ -80,6 +83,9 @@ public function testSetBaseTotalAmount($code, $amount, $storedCode)
         $this->assertSame($this->model, $result);
     }
 
+    /**
+     * @return array
+     */
     public function setBaseTotalAmountDataProvider()
     {
         return [
@@ -111,6 +117,9 @@ public function testAddTotalAmount($initialAmount, $delta, $updatedAmount)
         $this->assertEquals($updatedAmount, $this->model->getTotalAmount($code));
     }
 
+    /**
+     * @return array
+     */
     public function addTotalAmountDataProvider()
     {
         return [
@@ -142,6 +151,9 @@ public function testAddBaseTotalAmount($initialAmount, $delta, $updatedAmount)
         $this->assertEquals($updatedAmount, $this->model->getBaseTotalAmount($code));
     }
 
+    /**
+     * @return array
+     */
     public function addBaseTotalAmountDataProvider()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/RelatedProductsTest.php b/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/RelatedProductsTest.php
index a73a241922a9c..8be4479598907 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/RelatedProductsTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/RelatedProductsTest.php
@@ -61,6 +61,9 @@ public function testGetRelatedProductIds($optionValue, $productId, $expectedResu
      *
      * @return array
      */
+    /**
+     * @return array
+     */
     public function getRelatedProductIdsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/UpdaterTest.php b/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/UpdaterTest.php
index 03c3e32c20cb9..af47f6276705b 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/UpdaterTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Quote/Item/UpdaterTest.php
@@ -130,6 +130,9 @@ public function testUpdateNotQtyDecimal($qty, $expectedQty)
         $this->assertEquals($result, $this->object);
     }
 
+    /**
+     * @return array
+     */
     public function qtyProvider()
     {
         return [
@@ -142,6 +145,9 @@ public function qtyProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function qtyProviderDecimal()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Model/Quote/ItemTest.php b/app/code/Magento/Quote/Test/Unit/Model/Quote/ItemTest.php
index 9bc593c2dfd7b..ef529f643d6d4 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/Quote/ItemTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/Quote/ItemTest.php
@@ -847,6 +847,11 @@ public function testSetOptionsWithNull()
         $this->assertEquals($this->model, $this->model->setOptions(null));
     }
 
+    /**
+     * @param $optionCode
+     * @param array $optionData
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function createOptionMock($optionCode, $optionData = [])
     {
         $optionMock = $this->getMockBuilder(\Magento\Quote\Model\Quote\Item\Option::class)
diff --git a/app/code/Magento/Quote/Test/Unit/Model/QuoteTest.php b/app/code/Magento/Quote/Test/Unit/Model/QuoteTest.php
index a92d360bad35b..22785f051dcfa 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/QuoteTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/QuoteTest.php
@@ -639,6 +639,9 @@ public function testGetAddressById($addressId, $expected)
         $this->assertEquals((bool)$expected, (bool)$result);
     }
 
+    /**
+     * @return array
+     */
     public static function dataProviderGetAddress()
     {
         return [
@@ -680,6 +683,9 @@ public function testGetAddressByCustomerAddressId($isDeleted, $customerAddressId
         $this->assertEquals((bool)$expected, (bool)$result);
     }
 
+    /**
+     * @return array
+     */
     public static function dataProviderGetAddressByCustomer()
     {
         return [
@@ -726,6 +732,9 @@ public function testGetShippingAddressByCustomerAddressId($isDeleted, $addressTy
         $this->assertEquals($expected, (bool)$result);
     }
 
+    /**
+     * @return array
+     */
     public static function dataProviderShippingAddress()
     {
         return [
diff --git a/app/code/Magento/Quote/Test/Unit/Observer/Backend/CustomerQuoteObserverTest.php b/app/code/Magento/Quote/Test/Unit/Observer/Backend/CustomerQuoteObserverTest.php
index b82d1fa6c7839..f5ef9fed4ff84 100644
--- a/app/code/Magento/Quote/Test/Unit/Observer/Backend/CustomerQuoteObserverTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Observer/Backend/CustomerQuoteObserverTest.php
@@ -157,6 +157,9 @@ public function testDispatch($isWebsiteScope, $websites)
         $this->customerQuote->execute($this->observerMock);
     }
 
+    /**
+     * @return array
+     */
     public function dispatchDataProvider()
     {
         return [
diff --git a/app/code/Magento/ReleaseNotification/Test/Unit/Model/Condition/CanViewNotificationTest.php b/app/code/Magento/ReleaseNotification/Test/Unit/Model/Condition/CanViewNotificationTest.php
index d1661eec551a3..55f448730a506 100644
--- a/app/code/Magento/ReleaseNotification/Test/Unit/Model/Condition/CanViewNotificationTest.php
+++ b/app/code/Magento/ReleaseNotification/Test/Unit/Model/Condition/CanViewNotificationTest.php
@@ -110,6 +110,9 @@ public function testIsVisible($expected, $version, $lastViewVersion)
         $this->assertEquals($expected, $this->canViewNotification->isVisible([]));
     }
 
+    /**
+     * @return array
+     */
     public function isVisibleProvider()
     {
         return [
diff --git a/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/HttpContentProviderTest.php b/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/HttpContentProviderTest.php
index b4cb86dc9c769..9f3affbba2ebc 100644
--- a/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/HttpContentProviderTest.php
+++ b/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/HttpContentProviderTest.php
@@ -173,6 +173,9 @@ public function testGetContentSuccessOnDefaultOrEmpty($version, $edition, $local
         $this->assertEquals($response, $this->httpContentProvider->getContent($version, $edition, $locale));
     }
 
+    /**
+     * @return array
+     */
     public function getGetContentOnDefaultOrEmptyProvider()
     {
         return [
diff --git a/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/UrlBuilderTest.php b/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/UrlBuilderTest.php
index d8b2ecd11b2cb..46b3edf85826e 100644
--- a/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/UrlBuilderTest.php
+++ b/app/code/Magento/ReleaseNotification/Test/Unit/Model/ContentProvider/Http/UrlBuilderTest.php
@@ -57,6 +57,9 @@ public function testGetUrl($baseUrl, $version, $edition, $locale, $expected)
         );
     }
 
+    /**
+     * @return array
+     */
     public function getUrlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Review/Test/Unit/Block/FormTest.php b/app/code/Magento/Review/Test/Unit/Block/FormTest.php
index 2184385035c8d..1fd38551702ab 100644
--- a/app/code/Magento/Review/Test/Unit/Block/FormTest.php
+++ b/app/code/Magento/Review/Test/Unit/Block/FormTest.php
@@ -136,6 +136,9 @@ public function testGetAction($isSecure, $actionUrl, $productId)
         $this->assertEquals($actionUrl . '/id/' . $productId, $this->object->getAction());
     }
 
+    /**
+     * @return array
+     */
     public function getActionDataProvider()
     {
         return [
diff --git a/app/code/Magento/Review/Test/Unit/Block/Product/ReviewTest.php b/app/code/Magento/Review/Test/Unit/Block/Product/ReviewTest.php
index 243b4e8389923..01868242d0e0c 100644
--- a/app/code/Magento/Review/Test/Unit/Block/Product/ReviewTest.php
+++ b/app/code/Magento/Review/Test/Unit/Block/Product/ReviewTest.php
@@ -204,6 +204,9 @@ public function testGetProductReviewUrl($isSecure, $actionUrl, $productId)
         $this->assertEquals($actionUrl . '/id/' . $productId, $this->block->getProductReviewUrl());
     }
 
+    /**
+     * @return array
+     */
     public function getProductReviewUrlDataProvider()
     {
         return [
diff --git a/app/code/Magento/Review/Test/Unit/Model/ResourceModel/Review/CollectionTest.php b/app/code/Magento/Review/Test/Unit/Model/ResourceModel/Review/CollectionTest.php
index b3d2cec648dc6..36cbe455fa890 100644
--- a/app/code/Magento/Review/Test/Unit/Model/ResourceModel/Review/CollectionTest.php
+++ b/app/code/Magento/Review/Test/Unit/Model/ResourceModel/Review/CollectionTest.php
@@ -147,6 +147,9 @@ public function testAddEntityFilter(
         $this->model->addEntityFilter($entity, $pkValue);
     }
 
+    /**
+     * @return array
+     */
     public function addEntityFilterDataProvider()
     {
         return [
diff --git a/app/code/Magento/Rule/Test/Unit/Model/Condition/AbstractConditionTest.php b/app/code/Magento/Rule/Test/Unit/Model/Condition/AbstractConditionTest.php
index 1201ba92464d9..52653197e3981 100644
--- a/app/code/Magento/Rule/Test/Unit/Model/Condition/AbstractConditionTest.php
+++ b/app/code/Magento/Rule/Test/Unit/Model/Condition/AbstractConditionTest.php
@@ -40,6 +40,9 @@ public function testGetMappedSqlField()
         $this->assertEquals('category_ids', $this->_condition->getMappedSqlField());
     }
 
+    /**
+     * @return array
+     */
     public function validateAttributeDataProvider()
     {
         return [
@@ -146,6 +149,9 @@ public function testValidate($existingValue, $operator, $valueForValidate, $expe
         );
     }
 
+    /**
+     * @return array
+     */
     public function validateAttributeArrayInputTypeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Rule/Test/Unit/Model/ResourceModel/Rule/Collection/AbstractCollectionTest.php b/app/code/Magento/Rule/Test/Unit/Model/ResourceModel/Rule/Collection/AbstractCollectionTest.php
index 644d10ad75fe6..c4e7a591212c5 100644
--- a/app/code/Magento/Rule/Test/Unit/Model/ResourceModel/Rule/Collection/AbstractCollectionTest.php
+++ b/app/code/Magento/Rule/Test/Unit/Model/ResourceModel/Rule/Collection/AbstractCollectionTest.php
@@ -91,6 +91,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function addWebsitesToResultDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php
index 9070fa1a2e7bd..271f6cb659d7e 100644
--- a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php
@@ -268,6 +268,9 @@ public function testGetItems()
         $this->assertEquals(true, $this->block->getQuote()->getIsSuperMode());
     }
 
+    /**
+     * @return \Magento\Sales\Block\Adminhtml\Order\Create\Items\Grid
+     */
     protected function getGrid()
     {
         /** @var \Magento\Sales\Block\Adminhtml\Order\Create\Items\Grid  $grid */
diff --git a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Sidebar/AbstractSidebarTest.php b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Sidebar/AbstractSidebarTest.php
index a52d8e1b7f9f9..7b94e769eff9a 100644
--- a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Sidebar/AbstractSidebarTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Sidebar/AbstractSidebarTest.php
@@ -39,6 +39,9 @@ public function testGetItemQty($itemQty, $qty, $expectedValue)
         $this->assertEquals($expectedValue, $this->abstractSidebar->getItemQty($this->itemMock));
     }
 
+    /**
+     * @return array
+     */
     public function getItemQtyDataProvider()
     {
         return ['whenQtyIsset' => [2, 10, 10], 'whenQtyNotIsset' => [1, false, 1]];
diff --git a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Invoice/ViewTest.php b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Invoice/ViewTest.php
index 773694897291c..8f94ea8982ddf 100644
--- a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Invoice/ViewTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Invoice/ViewTest.php
@@ -54,6 +54,9 @@ public function testIsPaymentReview($canReviewPayment, $canFetchUpdate, $expecte
         $this->assertEquals($expectedResult, $testMethod->invoke($block));
     }
 
+    /**
+     * @return array
+     */
     public function isPaymentReviewDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Block/Order/TotalsTest.php b/app/code/Magento/Sales/Test/Unit/Block/Order/TotalsTest.php
index a8ce2ad4ff034..91b139772fb32 100644
--- a/app/code/Magento/Sales/Test/Unit/Block/Order/TotalsTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Block/Order/TotalsTest.php
@@ -53,6 +53,10 @@ public function testApplySortOrder()
         );
     }
 
+    /**
+     * @param array $expected
+     * @param array $actual
+     */
     private function assertEqualsSorted(array $expected, array $actual)
     {
         $this->assertEquals($expected, $actual, 'Array contents should be equal.');
diff --git a/app/code/Magento/Sales/Test/Unit/Controller/Adminhtml/Order/Create/ProcessDataTest.php b/app/code/Magento/Sales/Test/Unit/Controller/Adminhtml/Order/Create/ProcessDataTest.php
index 85ed8b9470282..e818b1edbc1d7 100644
--- a/app/code/Magento/Sales/Test/Unit/Controller/Adminhtml/Order/Create/ProcessDataTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Controller/Adminhtml/Order/Create/ProcessDataTest.php
@@ -235,6 +235,9 @@ public function testExecute($noDiscount, $couponCode, $errorMessage, $actualCoup
         $this->assertInstanceOf(\Magento\Backend\Model\View\Result\Forward::class, $this->processData->execute());
     }
 
+    /**
+     * @return array
+     */
     public function isApplyDiscountDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Controller/Download/DownloadCustomOptionTest.php b/app/code/Magento/Sales/Test/Unit/Controller/Download/DownloadCustomOptionTest.php
index 19cbec9d1a06b..d0d7e7efa97f7 100644
--- a/app/code/Magento/Sales/Test/Unit/Controller/Download/DownloadCustomOptionTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Controller/Download/DownloadCustomOptionTest.php
@@ -216,6 +216,9 @@ public function testExecute($itemOptionValues, $productOptionValues, $noRouteOcc
         $this->objectMock->execute();
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Cron/CleanExpiredQuotesTest.php b/app/code/Magento/Sales/Test/Unit/Cron/CleanExpiredQuotesTest.php
index fd20e0cb7d94a..e424cae85f223 100644
--- a/app/code/Magento/Sales/Test/Unit/Cron/CleanExpiredQuotesTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Cron/CleanExpiredQuotesTest.php
@@ -70,6 +70,9 @@ public function testExecute($lifetimes, $additionalFilterFields)
         $this->observer->execute();
     }
 
+    /**
+     * @return array
+     */
     public function cleanExpiredQuotesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/CustomerData/LastOrderedItemsTest.php b/app/code/Magento/Sales/Test/Unit/CustomerData/LastOrderedItemsTest.php
index 035d6ff2727d8..17b3fdde47456 100644
--- a/app/code/Magento/Sales/Test/Unit/CustomerData/LastOrderedItemsTest.php
+++ b/app/code/Magento/Sales/Test/Unit/CustomerData/LastOrderedItemsTest.php
@@ -177,6 +177,9 @@ public function testGetSectionData()
         $this->assertEquals(['items' => [$expectedItem1, $expectedItem2]], $this->section->getSectionData());
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getLastOrderMock()
     {
         $customerId = 1;
diff --git a/app/code/Magento/Sales/Test/Unit/Helper/AdminTest.php b/app/code/Magento/Sales/Test/Unit/Helper/AdminTest.php
index 180cfca0bc3cb..389064b7274a7 100644
--- a/app/code/Magento/Sales/Test/Unit/Helper/AdminTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Helper/AdminTest.php
@@ -198,6 +198,9 @@ public function testDisplayPriceAttribute(
         );
     }
 
+    /**
+     * @return array
+     */
     public function displayPricesDataProvider()
     {
         return [
@@ -310,6 +313,9 @@ public function testApplySalableProductTypesFilter($itemKey, $type, $calledTimes
         $this->adminHelper->applySalableProductTypesFilter($collectionMock);
     }
 
+    /**
+     * @return array
+     */
     public function applySalableProductTypesFilterDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/InvoiceOrderTest.php b/app/code/Magento/Sales/Test/Unit/Model/InvoiceOrderTest.php
index 014e0e28b49ee..02f855929d9d6 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/InvoiceOrderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/InvoiceOrderTest.php
@@ -428,6 +428,9 @@ public function testCouldNotInvoiceException()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/AddressTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/AddressTest.php
index 73838379490fd..93eb56a07955c 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/AddressTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/AddressTest.php
@@ -78,6 +78,9 @@ public function testGetRegionCodeRegionIsSet()
         $this->assertEquals('region', $this->address->getRegionCode());
     }
 
+    /**
+     * @return array
+     */
     public function regionProvider()
     {
         return [ [1, null], [null, 1]];
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Item/Validation/CreateQuantityValidatorTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Item/Validation/CreateQuantityValidatorTest.php
index c911af3044e5d..24a64c37a5e13 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Item/Validation/CreateQuantityValidatorTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Item/Validation/CreateQuantityValidatorTest.php
@@ -97,6 +97,9 @@ public function testValidateCreditMemoProductItems($orderItemId, $expectedResult
         $this->assertEquals($expectedResult, $this->createQuantityValidator->validate($this->entity));
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/RefundOperationTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/RefundOperationTest.php
index f917d69e69f79..9172a6f45bbcd 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/RefundOperationTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/RefundOperationTest.php
@@ -364,6 +364,9 @@ public function baseAmountsDataProvider()
         ];
     }
 
+    /**
+     * @param $amounts
+     */
     private function setBaseAmounts($amounts)
     {
         foreach ($amounts as $amountName => $summands) {
@@ -403,6 +406,9 @@ private function registerItems()
             ->willReturn([$item1, $item2, $item3]);
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getCreditmemoItemMock()
     {
         return $this->getMockBuilder(\Magento\Sales\Api\Data\CreditmemoItemInterface::class)
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/AbstractSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/AbstractSenderTest.php
index 97dc973e63437..afb76c982d7c2 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/AbstractSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/AbstractSenderTest.php
@@ -120,6 +120,10 @@ public function stepMockSetup()
         $this->loggerMock = $this->createMock(\Psr\Log\LoggerInterface::class);
     }
 
+    /**
+     * @param $billingAddress
+     * @param bool $isVirtual
+     */
     public function stepAddressFormat($billingAddress, $isVirtual = false)
     {
         $this->orderMock->expects($this->any())
@@ -145,6 +149,9 @@ public function stepSendWithCallSendCopyTo()
         $this->stepSend($this->never(), $this->once());
     }
 
+    /**
+     * @param $identityMockClassName
+     */
     public function stepIdentityContainerInit($identityMockClassName)
     {
         $this->identityContainerMock = $this->createPartialMock(
@@ -156,6 +163,10 @@ public function stepIdentityContainerInit($identityMockClassName)
             ->will($this->returnValue($this->storeMock));
     }
 
+    /**
+     * @param \PHPUnit_Framework_MockObject_Matcher_InvokedCount $sendExpects
+     * @param \PHPUnit_Framework_MockObject_Matcher_InvokedCount $sendCopyToExpects
+     */
     protected function stepSend(
         \PHPUnit_Framework_MockObject_Matcher_InvokedCount $sendExpects,
         \PHPUnit_Framework_MockObject_Matcher_InvokedCount $sendCopyToExpects
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceQuantityValidatorTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceQuantityValidatorTest.php
index 14d6df5c1c8f1..f6051d0a7f172 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceQuantityValidatorTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceQuantityValidatorTest.php
@@ -156,6 +156,11 @@ public function testValidateNoInvoiceItems()
         );
     }
 
+    /**
+     * @param $orderItemId
+     * @param $qty
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getInvoiceItemMock($orderItemId, $qty)
     {
         $invoiceItemMock = $this->getMockBuilder(\Magento\Sales\Api\Data\InvoiceItemInterface::class)
@@ -167,6 +172,12 @@ private function getInvoiceItemMock($orderItemId, $qty)
         return $invoiceItemMock;
     }
 
+    /**
+     * @param $id
+     * @param $qtyToInvoice
+     * @param $isDummy
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getOrderItemMock($id, $qtyToInvoice, $isDummy)
     {
         $orderItemMock = $this->getMockBuilder(\Magento\Sales\Api\Data\OrderItemInterface::class)
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceTest.php
index 672b6aacc4084..01589fcd7fdb3 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/InvoiceTest.php
@@ -137,6 +137,9 @@ public function testDefaultCanVoid($canVoid)
         $this->assertEquals($canVoid, $this->model->canVoid());
     }
 
+    /**
+     * @return array
+     */
     public function canVoidDataProvider()
     {
         return [[true], [false]];
@@ -379,6 +382,9 @@ public function testPay(
         self::assertEquals($expectedTotal, $this->order->getTotalPaid());
     }
 
+    /**
+     * @return array
+     */
     public function payDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/ItemTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/ItemTest.php
index 39fffa23dc1ec..76bfd62a7b889 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/ItemTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/ItemTest.php
@@ -140,6 +140,9 @@ public function testGetStatusId(
         $this->assertEquals($expectedStatus, $this->model->getStatusId());
     }
 
+    /**
+     * @return array
+     */
     public function getStatusIdDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/RepositoryTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/RepositoryTest.php
index 66ac821006266..d8c17cc2ace87 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/RepositoryTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/RepositoryTest.php
@@ -149,6 +149,10 @@ public function testGetList()
         $this->assertSame($this->collection, $this->repository->getList($this->searchCriteria));
     }
 
+    /**
+     * @param bool $id
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function mockPayment($id = false)
     {
         $payment = $this->createMock(\Magento\Sales\Model\Order\Payment::class);
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/BuilderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/BuilderTest.php
index 1ea3aeedea51c..ea11604c53c45 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/BuilderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/BuilderTest.php
@@ -257,6 +257,9 @@ protected function expectsIsPaymentTransactionClosed($isPaymentTransactionClosed
             ->willReturn($isPaymentTransactionClosed);
     }
 
+    /**
+     * @return array
+     */
     public function createDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/ManagerTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/ManagerTest.php
index 34b874c073a5a..13f6b9c607586 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/ManagerTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Payment/Transaction/ManagerTest.php
@@ -155,6 +155,9 @@ public function generateTransactionIdDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function isTransactionExistsDataProvider()
     {
         return [
@@ -165,6 +168,9 @@ public function isTransactionExistsDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function getAuthorizationDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/PaymentTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/PaymentTest.php
index ee7e07873da51..30b584b8c4ebf 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/PaymentTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/PaymentTest.php
@@ -600,6 +600,9 @@ public function testAcceptApprovePaymentTrue()
         self::assertEquals($baseGrandTotal, $this->payment->getBaseAmountPaidOnline());
     }
 
+    /**
+     * @return array
+     */
     public function acceptPaymentFalseProvider()
     {
         return [
@@ -1532,6 +1535,9 @@ public function testRefund()
         static::assertEquals($amount, $this->payment->getData('base_amount_refunded'));
     }
 
+    /**
+     * @return array
+     */
     public function boolProvider()
     {
         return [
@@ -1570,6 +1576,9 @@ public function testGetShouldCloseParentTransaction()
         static::assertFalse($this->payment->getShouldCloseParentTransaction());
     }
 
+    /**
+     * @return object
+     */
     protected function initPayment()
     {
         return (new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this))->getObject(
@@ -1589,6 +1598,12 @@ protected function initPayment()
         );
     }
 
+    /**
+     * @param $state
+     * @param null $status
+     * @param null $message
+     * @param null $isCustomerNotified
+     */
     protected function assertOrderUpdated(
         $state,
         $status = null,
@@ -1617,6 +1632,11 @@ protected function assertOrderUpdated(
             ->willReturn($statusHistory);
     }
 
+    /**
+     * @param $state
+     * @param $status
+     * @param array $allStatuses
+     */
     protected function mockGetDefaultStatus($state, $status, $allStatuses = [])
     {
         /** @var \Magento\Sales\Model\Order\Config | \PHPUnit_Framework_MockObject_MockObject $orderConfigMock */
@@ -1642,6 +1662,10 @@ protected function mockGetDefaultStatus($state, $status, $allStatuses = [])
             ->will($this->returnValue($orderConfigMock));
     }
 
+    /**
+     * @param $transactionId
+     * @return MockObject
+     */
     protected function getTransactionMock($transactionId)
     {
         $transaction = $this->createPartialMock(\Magento\Sales\Model\Order\Payment\Transaction::class, [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/StatusResolverTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/StatusResolverTest.php
index 28c29cd7a3bdf..57a4d5f40aa36 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/StatusResolverTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/StatusResolverTest.php
@@ -27,6 +27,9 @@ public function testGetOrderStatusByState($order, $expectedReturn)
         self::assertEquals($expectedReturn, $actualReturn);
     }
 
+    /**
+     * @return array
+     */
     public function statesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/OrderTest.php b/app/code/Magento/Sales/Test/Unit/Model/OrderTest.php
index fb1970638753f..7f6363346872c 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/OrderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/OrderTest.php
@@ -845,6 +845,9 @@ protected function prepareItemMock($qtyInvoiced)
             ->will($this->returnValue($itemCollectionMock));
     }
 
+    /**
+     * @return array
+     */
     public function canVoidPaymentDataProvider()
     {
         $data = [];
@@ -856,6 +859,9 @@ public function canVoidPaymentDataProvider()
         return $data;
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderActionFlag()
     {
         return [
@@ -1076,6 +1082,9 @@ public function testGetCreatedAtFormattedUsesCorrectLocale()
         $this->order->getCreatedAtFormatted(\IntlDateFormatter::SHORT);
     }
 
+    /**
+     * @return array
+     */
     public function notInvoicingStatesProvider()
     {
         return [
@@ -1085,6 +1094,9 @@ public function notInvoicingStatesProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function canNotCreditMemoStatesProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Model/RefundInvoiceTest.php b/app/code/Magento/Sales/Test/Unit/Model/RefundInvoiceTest.php
index 5a8c1032cd4fc..5148752e9831a 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/RefundInvoiceTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/RefundInvoiceTest.php
@@ -463,6 +463,9 @@ public function testCouldNotCreditmemoException()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         $creditmemoItemCreationMock = $this->getMockBuilder(CreditmemoItemCreationInterface::class)
diff --git a/app/code/Magento/Sales/Test/Unit/Model/RefundOrderTest.php b/app/code/Magento/Sales/Test/Unit/Model/RefundOrderTest.php
index 8bc3288af04cf..c95b56d81d6f4 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/RefundOrderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/RefundOrderTest.php
@@ -407,6 +407,9 @@ public function testCouldNotCreditmemoException()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Observer/Frontend/AddVatRequestParamsOrderCommentTest.php b/app/code/Magento/Sales/Test/Unit/Observer/Frontend/AddVatRequestParamsOrderCommentTest.php
index 395b653b0be8d..45cbea7307f4d 100644
--- a/app/code/Magento/Sales/Test/Unit/Observer/Frontend/AddVatRequestParamsOrderCommentTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Observer/Frontend/AddVatRequestParamsOrderCommentTest.php
@@ -84,6 +84,9 @@ public function testAddVatRequestParamsOrderComment(
         $this->assertNull($this->observer->execute($observer));
     }
 
+    /**
+     * @return array
+     */
     public function addVatRequestParamsOrderCommentDataProvider()
     {
         return [
diff --git a/app/code/Magento/Sales/Test/Unit/Observer/Frontend/RestoreCustomerGroupIdTest.php b/app/code/Magento/Sales/Test/Unit/Observer/Frontend/RestoreCustomerGroupIdTest.php
index f0738fbcf3129..f0845c67f1a4a 100644
--- a/app/code/Magento/Sales/Test/Unit/Observer/Frontend/RestoreCustomerGroupIdTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Observer/Frontend/RestoreCustomerGroupIdTest.php
@@ -72,6 +72,9 @@ public function testExecute($configAddressType)
         $this->quote->execute($observer);
     }
 
+    /**
+     * @return array
+     */
     public function restoreCustomerGroupIdDataProvider()
     {
         return [
diff --git a/app/code/Magento/SalesInventory/Test/Unit/Model/Order/ReturnValidatorTest.php b/app/code/Magento/SalesInventory/Test/Unit/Model/Order/ReturnValidatorTest.php
index 3d811363156d7..32eb810c7a16a 100644
--- a/app/code/Magento/SalesInventory/Test/Unit/Model/Order/ReturnValidatorTest.php
+++ b/app/code/Magento/SalesInventory/Test/Unit/Model/Order/ReturnValidatorTest.php
@@ -121,6 +121,9 @@ public function testValidationWithWrongOrderItems()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/SalesInventory/Test/Unit/Model/Plugin/Order/Validation/InvoiceRefundCreationArgumentsTest.php b/app/code/Magento/SalesInventory/Test/Unit/Model/Plugin/Order/Validation/InvoiceRefundCreationArgumentsTest.php
index b0a1f70cb01f9..c80cae2150704 100644
--- a/app/code/Magento/SalesInventory/Test/Unit/Model/Plugin/Order/Validation/InvoiceRefundCreationArgumentsTest.php
+++ b/app/code/Magento/SalesInventory/Test/Unit/Model/Plugin/Order/Validation/InvoiceRefundCreationArgumentsTest.php
@@ -140,6 +140,9 @@ public function testAfterValidation($erroMessage)
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/app/code/Magento/SalesInventory/Test/Unit/Observer/RefundOrderInventoryObserverTest.php b/app/code/Magento/SalesInventory/Test/Unit/Observer/RefundOrderInventoryObserverTest.php
index c2e2d4710f96c..9cbc1ec1677d0 100644
--- a/app/code/Magento/SalesInventory/Test/Unit/Observer/RefundOrderInventoryObserverTest.php
+++ b/app/code/Magento/SalesInventory/Test/Unit/Observer/RefundOrderInventoryObserverTest.php
@@ -173,6 +173,10 @@ public function testRefundOrderInventory()
         $this->observer->execute($this->eventObserver);
     }
 
+    /**
+     * @param $productId
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getCreditMemoItem($productId)
     {
         $backToStock = true;
diff --git a/app/code/Magento/SalesRule/Test/Unit/Block/Rss/DiscountsTest.php b/app/code/Magento/SalesRule/Test/Unit/Block/Rss/DiscountsTest.php
index cd00562bc4f7a..bd14773ea4923 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Block/Rss/DiscountsTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Block/Rss/DiscountsTest.php
@@ -195,6 +195,9 @@ public function testIsAllowed($isAllowed)
         $this->assertEquals($isAllowed, $this->block->isAllowed());
     }
 
+    /**
+     * @return array
+     */
     public function isAllowedDataProvider()
     {
         return [
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToDataModelTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToDataModelTest.php
index 82868b3723c75..1016d14066afc 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToDataModelTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToDataModelTest.php
@@ -115,6 +115,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     private function getArrayData()
     {
         return [
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToModelTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToModelTest.php
index 98e1d7cddee57..5dd67424418b7 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToModelTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/Converter/ToModelTest.php
@@ -273,6 +273,9 @@ public function testFormattingDate($data)
         $this->model->toModel($dataModel);
     }
 
+    /**
+     * @return array
+     */
     public function expectedDatesProvider()
     {
         return [
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/CouponRepositoryTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/CouponRepositoryTest.php
index 31536e1be3d2e..e516f817a59d1 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/CouponRepositoryTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/CouponRepositoryTest.php
@@ -155,6 +155,9 @@ public function testSaveWithExceptions($exceptionObject, $exceptionName, $except
         $this->model->save($coupon);
     }
 
+    /**
+     * @return array
+     */
     public function saveExceptionsDataProvider()
     {
         $msg = 'kiwis';
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/Quote/DiscountTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/Quote/DiscountTest.php
index 671f20a27a460..090dbd7fe5d6d 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/Quote/DiscountTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/Quote/DiscountTest.php
@@ -225,6 +225,9 @@ public function testCollectItemHasChildren($childItemData, $parentData, $expecte
         }
     }
 
+    /**
+     * @return array
+     */
     public function collectItemHasChildrenDataProvider()
     {
         $data = [
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/RuleTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/RuleTest.php
index 89f4e93901c1b..be9e25eb20302 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/RuleTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/RuleTest.php
@@ -113,6 +113,9 @@ public function testBeforeSaveResetConditionToNull()
         $this->model->getActions();
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupProdConditionMock()
     {
         $prodConditionMock = $this->getMockBuilder(\Magento\SalesRule\Model\Rule\Condition\Product\Combine::class)
@@ -133,6 +136,9 @@ protected function setupProdConditionMock()
         return $prodConditionMock;
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupConditionMock()
     {
         $conditionMock = $this->getMockBuilder(\Magento\SalesRule\Model\Rule\Condition\Combine::class)
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/RulesApplierTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/RulesApplierTest.php
index 37c839d413d4b..217a8dba273c4 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/RulesApplierTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/RulesApplierTest.php
@@ -140,6 +140,9 @@ public function testApplyRulesWhenRuleWithStopRulesProcessingIsUsed($isChildren,
         $this->assertEquals($appliedRuleIds, $result);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderChildren()
     {
         return [
@@ -179,6 +182,10 @@ protected function getPreparedItem()
         return $item;
     }
 
+    /**
+     * @param $item
+     * @param $rule
+     */
     protected function applyRule($item, $rule)
     {
         $qty = 2;
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/UtilityTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/UtilityTest.php
index 5e48f3110a395..4ce0f2a0564f3 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/UtilityTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/UtilityTest.php
@@ -362,6 +362,9 @@ public function testMergeIds($a1, $a2, $isSting, $expected)
         $this->assertEquals($expected, $this->utility->mergeIds($a1, $a2, $isSting));
     }
 
+    /**
+     * @return array
+     */
     public function mergeIdsDataProvider()
     {
         return [
diff --git a/app/code/Magento/SalesRule/Test/Unit/Model/ValidatorTest.php b/app/code/Magento/SalesRule/Test/Unit/Model/ValidatorTest.php
index 2e6a3c3c38af0..42448565791c5 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Model/ValidatorTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Model/ValidatorTest.php
@@ -495,6 +495,9 @@ public function testProcessShippingAmountActions($action)
         );
     }
 
+    /**
+     * @return array
+     */
     public static function dataProviderActions()
     {
         return [
diff --git a/app/code/Magento/SalesRule/Test/Unit/Observer/SalesOrderAfterPlaceObserverTest.php b/app/code/Magento/SalesRule/Test/Unit/Observer/SalesOrderAfterPlaceObserverTest.php
index b14c783019590..32bf2201665ef 100644
--- a/app/code/Magento/SalesRule/Test/Unit/Observer/SalesOrderAfterPlaceObserverTest.php
+++ b/app/code/Magento/SalesRule/Test/Unit/Observer/SalesOrderAfterPlaceObserverTest.php
@@ -170,6 +170,9 @@ public function testSalesOrderAfterPlace($ruleCustomerId)
         $this->assertEquals($this->model, $this->model->execute($observer));
     }
 
+    /**
+     * @return array
+     */
     public function salesOrderAfterPlaceDataProvider()
     {
         return [
diff --git a/app/code/Magento/SampleData/Test/Unit/Model/DependencyTest.php b/app/code/Magento/SampleData/Test/Unit/Model/DependencyTest.php
index 5343b4f867adb..0a4a00ef4feaf 100644
--- a/app/code/Magento/SampleData/Test/Unit/Model/DependencyTest.php
+++ b/app/code/Magento/SampleData/Test/Unit/Model/DependencyTest.php
@@ -76,6 +76,10 @@ public function testPackagesFromComposerSuggest(
         );
         $this->assertEquals($expectedPackages, $dependency->getSampleDataPackages());
     }
+
+    /**
+     * @return array
+     */
     public static function dataPackagesFromComposerSuggest()
     {
         return [
@@ -167,6 +171,10 @@ public static function dataPackagesFromComposerSuggest()
         ];
     }
 
+    /**
+     * @param array $composerJsonContent
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     public function stubComposerJsonReader(array $composerJsonContent)
     {
         $stub = $this->getMockBuilder(Filesystem\Directory\ReadInterface::class)
@@ -183,6 +191,9 @@ public function stubComposerJsonReader(array $composerJsonContent)
         return $stub;
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     public function stubFileNotFoundReader()
     {
         $stub = $this->getMockBuilder(Filesystem\Directory\ReadInterface::class)
diff --git a/app/code/Magento/Search/Test/Unit/Helper/DataTest.php b/app/code/Magento/Search/Test/Unit/Helper/DataTest.php
index 291362734feff..1f9aad8d4316d 100644
--- a/app/code/Magento/Search/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/Search/Test/Unit/Helper/DataTest.php
@@ -127,6 +127,9 @@ public function testGetEscapedQueryText($queryText, $maxQueryLength, $expected)
         $this->assertEquals($expected, $this->model->getEscapedQueryText());
     }
 
+    /**
+     * @return array
+     */
     public function queryTextDataProvider()
     {
         return [
diff --git a/app/code/Magento/Security/Test/Unit/Model/ResourceModel/PasswordResetRequestEvent/CollectionFactoryTest.php b/app/code/Magento/Security/Test/Unit/Model/ResourceModel/PasswordResetRequestEvent/CollectionFactoryTest.php
index 525693631e86f..89bc5c2b85d50 100644
--- a/app/code/Magento/Security/Test/Unit/Model/ResourceModel/PasswordResetRequestEvent/CollectionFactoryTest.php
+++ b/app/code/Magento/Security/Test/Unit/Model/ResourceModel/PasswordResetRequestEvent/CollectionFactoryTest.php
@@ -86,6 +86,9 @@ public function testCreate(
         $this->model->create($securityEventType, $accountReference, $longIp);
     }
 
+    /**
+     * @return array
+     */
     public function createDataProvider()
     {
         return [
diff --git a/app/code/Magento/SendFriend/Test/Unit/Block/Plugin/Catalog/Product/ViewTest.php b/app/code/Magento/SendFriend/Test/Unit/Block/Plugin/Catalog/Product/ViewTest.php
index 6dbab3a5573a8..2718e1fa44f6e 100644
--- a/app/code/Magento/SendFriend/Test/Unit/Block/Plugin/Catalog/Product/ViewTest.php
+++ b/app/code/Magento/SendFriend/Test/Unit/Block/Plugin/Catalog/Product/ViewTest.php
@@ -52,6 +52,9 @@ public function testAfterCanEmailToFriend($result, $callSendfriend)
         $this->assertTrue($this->view->afterCanEmailToFriend($this->productView, $result));
     }
 
+    /**
+     * @return array
+     */
     public function afterCanEmailToFriendDataSet()
     {
         return [
diff --git a/app/code/Magento/Shipping/Test/Unit/Controller/Adminhtml/Order/Shipment/ViewTest.php b/app/code/Magento/Shipping/Test/Unit/Controller/Adminhtml/Order/Shipment/ViewTest.php
index 65460d1a13eea..2db8eabffae61 100644
--- a/app/code/Magento/Shipping/Test/Unit/Controller/Adminhtml/Order/Shipment/ViewTest.php
+++ b/app/code/Magento/Shipping/Test/Unit/Controller/Adminhtml/Order/Shipment/ViewTest.php
@@ -204,6 +204,14 @@ public function testExecuteNoShipment()
         $this->assertEquals($this->resultForwardMock, $this->controller->execute());
     }
 
+    /**
+     * @param $orderId
+     * @param $shipmentId
+     * @param $shipment
+     * @param $tracking
+     * @param $comeFrom
+     * @param $returnShipment
+     */
     protected function loadShipment($orderId, $shipmentId, $shipment, $tracking, $comeFrom, $returnShipment)
     {
         $valueMap = [
diff --git a/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreateGuaranteeAbilityTest.php b/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreateGuaranteeAbilityTest.php
index 7ba3ab3eef4f6..6b7a6112a932e 100644
--- a/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreateGuaranteeAbilityTest.php
+++ b/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreateGuaranteeAbilityTest.php
@@ -198,6 +198,9 @@ public function testIsAvailableWithCanceledOrder($state)
         $this->assertFalse($this->createGuaranteeAbility->isAvailable($orderId));
     }
 
+    /**
+     * @return array
+     */
     public function isAvailableWithCanceledOrderDataProvider()
     {
         return [
diff --git a/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreationServiceTest.php b/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreationServiceTest.php
index a22bfe12222a6..db64b38375fe1 100644
--- a/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreationServiceTest.php
+++ b/app/code/Magento/Signifyd/Test/Unit/Model/Guarantee/CreationServiceTest.php
@@ -203,6 +203,11 @@ public function testCreateForOrderWithCaseUpdate()
         );
     }
 
+    /**
+     * @param $orderId
+     * @param array $caseData
+     * @return MockObject
+     */
     private function withCaseEntityExistsForOrderId($orderId, array $caseData = [])
     {
         $this->createGuaranteeAbility->expects(self::once())
@@ -226,6 +231,9 @@ private function withCaseEntityExistsForOrderId($orderId, array $caseData = [])
         return $dummyCaseEntity;
     }
 
+    /**
+     * @param $failureMessage
+     */
     private function withGatewayFailure($failureMessage)
     {
         $this->gateway
@@ -233,6 +241,9 @@ private function withGatewayFailure($failureMessage)
             ->willThrowException(new GatewayException($failureMessage));
     }
 
+    /**
+     * @param $gatewayResult
+     */
     private function withGatewaySuccess($gatewayResult)
     {
         $this->gateway
diff --git a/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/Client/ResponseHandlerTest.php b/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/Client/ResponseHandlerTest.php
index bf0c6ee238d5f..1ee55d7ad150c 100644
--- a/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/Client/ResponseHandlerTest.php
+++ b/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/Client/ResponseHandlerTest.php
@@ -92,6 +92,9 @@ public function testHandleFailureMessage($code, $message)
         }
     }
 
+    /**
+     * @return array
+     */
     public function errorsProvider()
     {
         return [
diff --git a/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/GatewayTest.php b/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/GatewayTest.php
index 2a05189e0e393..ba82ff4619ad3 100644
--- a/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/GatewayTest.php
+++ b/app/code/Magento/Signifyd/Test/Unit/Model/SignifydGateway/GatewayTest.php
@@ -389,6 +389,9 @@ public function testCancelGuaranteeWithUnexpectedDisposition()
         $this->assertEquals(Gateway::GUARANTEE_CANCELED, $result);
     }
 
+    /**
+     * @return array
+     */
     public function supportedGuaranteeDispositionsProvider()
     {
         return [
diff --git a/app/code/Magento/Store/Test/Unit/Model/Config/Importer/Processor/UpdateTest.php b/app/code/Magento/Store/Test/Unit/Model/Config/Importer/Processor/UpdateTest.php
index 3b0b932e31d46..2e5a3b6a65db9 100644
--- a/app/code/Magento/Store/Test/Unit/Model/Config/Importer/Processor/UpdateTest.php
+++ b/app/code/Magento/Store/Test/Unit/Model/Config/Importer/Processor/UpdateTest.php
@@ -253,6 +253,9 @@ public function testRun()
         $this->model->run($data);
     }
 
+    /**
+     * @return array
+     */
     private function getData()
     {
         return [
diff --git a/app/code/Magento/Store/Test/Unit/Model/Service/StoreConfigManagerTest.php b/app/code/Magento/Store/Test/Unit/Model/Service/StoreConfigManagerTest.php
index 702f4eee8db99..14d7e07c3c801 100644
--- a/app/code/Magento/Store/Test/Unit/Model/Service/StoreConfigManagerTest.php
+++ b/app/code/Magento/Store/Test/Unit/Model/Service/StoreConfigManagerTest.php
@@ -55,6 +55,10 @@ protected function setUp()
         );
     }
 
+    /**
+     * @param array $storeConfig
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getStoreMock(array $storeConfig)
     {
         $storeMock = $this->getMockBuilder(\Magento\Store\Model\Store::class)
@@ -88,6 +92,9 @@ protected function getStoreMock(array $storeConfig)
         return $storeMock;
     }
 
+    /**
+     * @return \Magento\Store\Model\Data\StoreConfig
+     */
     protected function createStoreConfigDataObject()
     {
         /** @var \Magento\Framework\Api\ExtensionAttributesFactory $extensionFactoryMock */
diff --git a/app/code/Magento/Store/Test/Unit/Model/StoreManagerTest.php b/app/code/Magento/Store/Test/Unit/Model/StoreManagerTest.php
index ad3b927258717..a48804f02adc0 100644
--- a/app/code/Magento/Store/Test/Unit/Model/StoreManagerTest.php
+++ b/app/code/Magento/Store/Test/Unit/Model/StoreManagerTest.php
@@ -97,6 +97,9 @@ public function testGetStores($storesList, $withDefault, $codeKey, $expectedStor
         $this->assertEquals($expectedStores, $this->model->getStores($withDefault, $codeKey));
     }
 
+    /**
+     * @return array
+     */
     public function getStoresDataProvider()
     {
         $defaultStoreMock = $this->getMockBuilder(\Magento\Store\Api\Data\StoreInterface::class)
diff --git a/app/code/Magento/Store/Test/Unit/Model/StoreTest.php b/app/code/Magento/Store/Test/Unit/Model/StoreTest.php
index eacccbf1bb475..4cbf78d0d6471 100644
--- a/app/code/Magento/Store/Test/Unit/Model/StoreTest.php
+++ b/app/code/Magento/Store/Test/Unit/Model/StoreTest.php
@@ -94,6 +94,9 @@ public function testLoad($key, $field)
         $model->load($key);
     }
 
+    /**
+     * @return array
+     */
     public function loadDataProvider()
     {
         return [
@@ -265,6 +268,9 @@ function ($path, $scope, $scopeCode) use ($secure, $expectedPath) {
         $this->assertEquals($expectedBaseUrl, $model->getBaseUrl($type, $secure));
     }
 
+    /**
+     * @return array
+     */
     public function getBaseUrlDataProvider()
     {
         return [
@@ -563,6 +569,9 @@ public function testIsCurrentlySecure(
         }
     }
 
+    /**
+     * @return array
+     */
     public function isCurrentlySecureDataProvider()
     {
         return [
diff --git a/app/code/Magento/Store/Test/Unit/Model/System/StoreTest.php b/app/code/Magento/Store/Test/Unit/Model/System/StoreTest.php
index d70da2ee1ddc6..9cc4bb6ac8e5b 100644
--- a/app/code/Magento/Store/Test/Unit/Model/System/StoreTest.php
+++ b/app/code/Magento/Store/Test/Unit/Model/System/StoreTest.php
@@ -104,6 +104,9 @@ public function testGetStoresStructure(
         );
     }
 
+    /**
+     * @return array
+     */
     public function getStoresStructureDataProvider()
     {
         $websiteName = 'website';
@@ -207,6 +210,9 @@ public function testGetStoreValuesForForm(
         );
     }
 
+    /**
+     * @return array
+     */
     public function getStoreValuesForFormDataProvider()
     {
         $websiteName = 'website';
diff --git a/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Attribute/Edit/Options/AbstractSwatchTest.php b/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Attribute/Edit/Options/AbstractSwatchTest.php
index a86c745c7c810..0d0444ddda38b 100644
--- a/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Attribute/Edit/Options/AbstractSwatchTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Attribute/Edit/Options/AbstractSwatchTest.php
@@ -160,6 +160,9 @@ public function testGetStoreOptionValues($values)
         $this->assertEquals($result, $values);
     }
 
+    /**
+     * @return array
+     */
     public function dataForGetStoreOptionValues()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Product/Attribute/Edit/FormTest.php b/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Product/Attribute/Edit/FormTest.php
index aad8741735813..168a682961bc6 100644
--- a/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Product/Attribute/Edit/FormTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Block/Adminhtml/Product/Attribute/Edit/FormTest.php
@@ -21,6 +21,9 @@ public function testAddValues($values)
         $this->assertEquals($block, $result);
     }
 
+    /**
+     * @return array
+     */
     public function dataForAddValues()
     {
         $additionalData = [
diff --git a/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Iframe/ShowTest.php b/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Iframe/ShowTest.php
index 19a05dad151c4..a28f3db8fb392 100644
--- a/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Iframe/ShowTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Iframe/ShowTest.php
@@ -130,6 +130,9 @@ public function testExecute($fileResult, $expectedResult)
         $this->controller->execute();
     }
 
+    /**
+     * @return array
+     */
     public function dataForExecute()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Product/Attribute/Plugin/SaveTest.php b/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Product/Attribute/Plugin/SaveTest.php
index 66f0d484c9e83..c9c826b3a7831 100644
--- a/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Product/Attribute/Plugin/SaveTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Controller/Adminhtml/Product/Attribute/Plugin/SaveTest.php
@@ -39,6 +39,9 @@ public function testBeforeDispatch($dataRequest, $runTimes)
         $controller->beforeDispatch($subject, $request);
     }
 
+    /**
+     * @return array
+     */
     public function dataRequest()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Helper/DataTest.php b/app/code/Magento/Swatches/Test/Unit/Helper/DataTest.php
index 96e84dc6eecd0..aa44f1f114037 100644
--- a/app/code/Magento/Swatches/Test/Unit/Helper/DataTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Helper/DataTest.php
@@ -148,6 +148,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return array
+     */
     public function dataForAdditionalData()
     {
         $additionalData = [
@@ -199,6 +202,9 @@ public function testAssembleAdditionalDataEavAttribute($dataFromDb, $attributeDa
         $this->swatchHelperObject->assembleAdditionalDataEavAttribute($this->attributeMock);
     }
 
+    /**
+     * @return array
+     */
     public function dataForAssembleEavAttribute()
     {
         $additionalData = [
@@ -243,6 +249,9 @@ public function testLoadFirstVariationWithSwatchImage($imageTypes, $expected, $r
         }
     }
 
+    /**
+     * @return array
+     */
     public function dataForVariationWithSwatchImage()
     {
         return [
@@ -306,6 +315,9 @@ public function testLoadFirstVariationWithImage($imageTypes, $expected, $require
         }
     }
 
+    /**
+     * @return array
+     */
     public function dataForVariationWithImage()
     {
         return [
@@ -394,6 +406,9 @@ public function testGetProductMediaGallery($mediaGallery, $image)
         }
     }
 
+    /**
+     * @return array
+     */
     public function dataForMediaGallery()
     {
         return [
@@ -431,6 +446,10 @@ protected function getSwatchAttributes()
             ->willReturn($returnFromProvideMethod);
     }
 
+    /**
+     * @param array $attributes
+     * @param array $imageTypes
+     */
     protected function getUsedProducts(array $attributes, array $imageTypes)
     {
         $this->productMock
@@ -516,6 +535,9 @@ protected function addfilterByParent()
         $zendDbSelectMock->method('where')->willReturn($zendDbSelectMock);
     }
 
+    /**
+     * @return array
+     */
     public function dataForCreateSwatchProduct()
     {
         $productMock = $this->createMock(\Magento\Catalog\Model\Product::class);
@@ -552,6 +574,9 @@ public function dataForCreateSwatchProduct()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function dataForCreateSwatchProductByFallback()
     {
         $productMock = $this->createMock(\Magento\Catalog\Model\Product::class);
@@ -593,6 +618,9 @@ public function testGetSwatchAttributesAsArray($optionsArray, $attributeData, $e
         $this->assertEquals($result, $expected);
     }
 
+    /**
+     * @return array
+     */
     public function dataForGettingSwatchAsArray()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Helper/MediaTest.php b/app/code/Magento/Swatches/Test/Unit/Helper/MediaTest.php
index 9602291df4838..cb14e29ba3d64 100644
--- a/app/code/Magento/Swatches/Test/Unit/Helper/MediaTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Helper/MediaTest.php
@@ -106,6 +106,9 @@ public function testGetSwatchAttributeImage($swatchType, $expectedResult)
         $this->assertEquals($result, $expectedResult);
     }
 
+    /**
+     * @return array
+     */
     public function dataForFullPath()
     {
         return [
@@ -194,6 +197,9 @@ public function testGetFolderNameSize($swatchType, $imageConfig, $expectedResult
         $this->assertEquals($expectedResult, $result);
     }
 
+    /**
+     * @return array
+     */
     public function dataForFolderName()
     {
         return [
@@ -281,6 +287,9 @@ public function testGetSwatchCachePath($swatchType, $expectedResult)
         $this->assertEquals($expectedResult, $this->mediaHelperObject->getSwatchCachePath($swatchType));
     }
 
+    /**
+     * @return array
+     */
     public function getSwatchTypes()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Model/Plugin/EavAttributeTest.php b/app/code/Magento/Swatches/Test/Unit/Model/Plugin/EavAttributeTest.php
index 258347887ff08..21df8c795506b 100644
--- a/app/code/Magento/Swatches/Test/Unit/Model/Plugin/EavAttributeTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Model/Plugin/EavAttributeTest.php
@@ -310,6 +310,9 @@ public function testBeforeSaveNotSwatch()
         $this->eavAttribute->beforeBeforeSave($this->attribute);
     }
 
+    /**
+     * @return array
+     */
     public function visualSwatchProvider()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductImageTest.php b/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductImageTest.php
index b699d08076ef9..895a08062d999 100644
--- a/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductImageTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductImageTest.php
@@ -94,6 +94,9 @@ public function testBeforeGetImage($expected)
         $this->assertEquals([$this->productMock, $expected['page_handle'], []], $result);
     }
 
+    /**
+     * @param $expected
+     */
     protected function getFilterArray($expected)
     {
         $this->eavConfigMock
@@ -112,6 +115,9 @@ protected function getFilterArray($expected)
             ->willReturn($expected['getId']);
     }
 
+    /**
+     * @param $expected
+     */
     protected function canReplaceImageWithSwatch($expected)
     {
         $this->swatchesHelperMock
diff --git a/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductTest.php b/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductTest.php
index 791ba83b374c6..d7422786aec67 100644
--- a/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Model/Plugin/ProductTest.php
@@ -39,6 +39,9 @@ public function testAfterGetMediaAttributes($productType, $hasKey)
         }
     }
 
+    /**
+     * @return array
+     */
     public function dataRoles()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Observer/AddFieldsToAttributeObserverTest.php b/app/code/Magento/Swatches/Test/Unit/Observer/AddFieldsToAttributeObserverTest.php
index 8292e0c2ed1bb..45c680366264b 100644
--- a/app/code/Magento/Swatches/Test/Unit/Observer/AddFieldsToAttributeObserverTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Observer/AddFieldsToAttributeObserverTest.php
@@ -73,6 +73,9 @@ public function testAddFields($expected)
         $this->observerMock->execute($this->eventObserverMock);
     }
 
+    /**
+     * @return array
+     */
     public function dataAddFields()
     {
         return [
diff --git a/app/code/Magento/Swatches/Test/Unit/Observer/AddSwatchAttributeTypeObserverTest.php b/app/code/Magento/Swatches/Test/Unit/Observer/AddSwatchAttributeTypeObserverTest.php
index c24dd820e0144..f78797d93cb0d 100644
--- a/app/code/Magento/Swatches/Test/Unit/Observer/AddSwatchAttributeTypeObserverTest.php
+++ b/app/code/Magento/Swatches/Test/Unit/Observer/AddSwatchAttributeTypeObserverTest.php
@@ -66,6 +66,9 @@ public function testAddSwatchAttributeType($exp)
         $this->observerMock->execute($this->eventObserverMock);
     }
 
+    /**
+     * @return array
+     */
     public function dataAddSwatch()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Block/Checkout/ShippingTest.php b/app/code/Magento/Tax/Test/Unit/Block/Checkout/ShippingTest.php
index c1aa2b0c9900d..e7a11ec45ad3f 100644
--- a/app/code/Magento/Tax/Test/Unit/Block/Checkout/ShippingTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Block/Checkout/ShippingTest.php
@@ -44,6 +44,9 @@ public function testDisplayShipping($shippingMethod, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->displayShipping());
     }
 
+    /**
+     * @return array
+     */
     public function displayShippingDataProvider()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Block/Item/Price/RendererTest.php b/app/code/Magento/Tax/Test/Unit/Block/Item/Price/RendererTest.php
index 1a16e69724479..90f0f09215889 100644
--- a/app/code/Magento/Tax/Test/Unit/Block/Item/Price/RendererTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Block/Item/Price/RendererTest.php
@@ -96,6 +96,9 @@ public function testDisplayPriceInclTax($zone, $methodName)
         $this->assertEquals($flag, $this->renderer->displayPriceInclTax());
     }
 
+    /**
+     * @return array
+     */
     public function displayPriceInclTaxDataProvider()
     {
         $data = [
@@ -143,6 +146,9 @@ public function testDisplayPriceExclTax($zone, $methodName)
         $this->assertEquals($flag, $this->renderer->displayPriceExclTax());
     }
 
+    /**
+     * @return array
+     */
     public function displayPriceExclTaxDataProvider()
     {
         $data = [
@@ -190,6 +196,9 @@ public function testDisplayBothPrices($zone, $methodName)
         $this->assertEquals($flag, $this->renderer->displayBothPrices());
     }
 
+    /**
+     * @return array
+     */
     public function displayBothPricesDataProvider()
     {
         $data = [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/Calculation/RateRepositoryTest.php b/app/code/Magento/Tax/Test/Unit/Model/Calculation/RateRepositoryTest.php
index e12edf0c683e9..bf49f3d479132 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/Calculation/RateRepositoryTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/Calculation/RateRepositoryTest.php
@@ -312,6 +312,9 @@ public function testSaveThrowsExceptionIfCannotSaveTitles($expectedException, $e
         $this->model->save($rateMock);
     }
 
+    /**
+     * @return array
+     */
     public function saveThrowsExceptionIfCannotSaveTitlesDataProvider()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/Plugin/OrderSaveTest.php b/app/code/Magento/Tax/Test/Unit/Model/Plugin/OrderSaveTest.php
index 912f42af0d3cd..82a473b42a82e 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/Plugin/OrderSaveTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/Plugin/OrderSaveTest.php
@@ -63,6 +63,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupOrderMock()
     {
         $orderMock = $this->getMockBuilder(\Magento\Sales\Model\Order::class)
@@ -80,6 +83,9 @@ protected function setupOrderMock()
         return $orderMock;
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupExtensionAttributeMock()
     {
         $orderExtensionAttributeMock = $this->getMockBuilder(\Magento\Sales\Api\Data\OrderExtensionInterface::class)
@@ -95,6 +101,9 @@ protected function setupExtensionAttributeMock()
         return $orderExtensionAttributeMock;
     }
 
+    /**
+     * @param $expectedTaxes
+     */
     protected function verifyOrderTaxes($expectedTaxes)
     {
         $index = 0;
@@ -125,6 +134,9 @@ protected function verifyOrderTaxes($expectedTaxes)
         }
     }
 
+    /**
+     * @param $expectedItemTaxes
+     */
     public function verifyItemTaxes($expectedItemTaxes)
     {
         $index = 0;
diff --git a/app/code/Magento/Tax/Test/Unit/Model/Quote/GrandTotalDetailsPluginTest.php b/app/code/Magento/Tax/Test/Unit/Model/Quote/GrandTotalDetailsPluginTest.php
index e5bd728e180f6..4d1db6435b863 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/Quote/GrandTotalDetailsPluginTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/Quote/GrandTotalDetailsPluginTest.php
@@ -108,6 +108,10 @@ function ($value) {
         );
     }
 
+    /**
+     * @param array $data
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupTaxTotal(array $data)
     {
         $taxTotalMock = $this->getMockBuilder(\Magento\Quote\Model\Quote\Address\Total::class)
@@ -121,6 +125,10 @@ protected function setupTaxTotal(array $data)
         return $taxTotalMock;
     }
 
+    /**
+     * @param array $taxRate
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupTaxRateFactoryMock(array $taxRate)
     {
         $taxRateMock = $this->getMockBuilder(\Magento\Tax\Api\Data\GrandTotalRatesInterface::class)
@@ -142,6 +150,10 @@ protected function setupTaxRateFactoryMock(array $taxRate)
         return $taxRateMock;
     }
 
+    /**
+     * @param array $taxDetails
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupTaxDetails(array $taxDetails)
     {
         $taxDetailsMock = $this->getMockBuilder(\Magento\Tax\Api\Data\GrandTotalDetailsInterface::class)
diff --git a/app/code/Magento/Tax/Test/Unit/Model/Quote/ToOrderConverterTest.php b/app/code/Magento/Tax/Test/Unit/Model/Quote/ToOrderConverterTest.php
index 23ce032764a8f..09f82b32137b3 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/Quote/ToOrderConverterTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/Quote/ToOrderConverterTest.php
@@ -64,6 +64,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function setupOrderExtensionAttributeMock()
     {
         $orderExtensionAttributeMock = $this->getMockBuilder(\Magento\Sales\Api\Data\OrderExtensionInterface::class)
diff --git a/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/CommonTaxCollectorTest.php b/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/CommonTaxCollectorTest.php
index 44c827c41af56..9325ec10dc627 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/CommonTaxCollectorTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/CommonTaxCollectorTest.php
@@ -183,6 +183,9 @@ public function testGetShippingDataObject(
         }
     }
 
+    /**
+     * @return array
+     */
     public function getShippingDataObjectDataProvider()
     {
         $data = [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/TaxTest.php b/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/TaxTest.php
index 0c1876d6fc7d7..9cfea225f2d9c 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/TaxTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/Sales/Total/Quote/TaxTest.php
@@ -565,6 +565,9 @@ public function testMapQuoteExtraTaxables($itemData, $addressData)
     /*
      * @return array
      */
+    /**
+     * @return array
+     */
     public function dataProviderMapQuoteExtraTaxablesArray()
     {
         $data = [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/System/Message/Notification/ApplyDiscountOnPricesTest.php b/app/code/Magento/Tax/Test/Unit/Model/System/Message/Notification/ApplyDiscountOnPricesTest.php
index a5bf80345f0b2..95dc5509ed0a3 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/System/Message/Notification/ApplyDiscountOnPricesTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/System/Message/Notification/ApplyDiscountOnPricesTest.php
@@ -93,6 +93,9 @@ public function testIsDisplayed(
         $this->assertEquals($expectedResult, $this->applyDiscountOnPricesNotification->isDisplayed());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderIsDisplayed()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/System/Message/NotificationsTest.php b/app/code/Magento/Tax/Test/Unit/Model/System/Message/NotificationsTest.php
index 3cf1421ebcf37..3fda67669fe86 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/System/Message/NotificationsTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/System/Message/NotificationsTest.php
@@ -73,6 +73,9 @@ public function testIsDisplayed(
         $this->assertEquals($expectedResult, $this->notifications->isDisplayed());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderIsDisplayed()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/TaxAddressManagerTest.php b/app/code/Magento/Tax/Test/Unit/Model/TaxAddressManagerTest.php
index ec640b74f8985..493eebf9e1123 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/TaxAddressManagerTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/TaxAddressManagerTest.php
@@ -109,6 +109,9 @@ public function testSetDefaultAddressAfterSave(
         $this->manager->setDefaultAddressAfterSave($address);
     }
 
+    /**
+     * @return array
+     */
     public function setAddressCustomerSessionAddressSaveDataProvider()
     {
         return [
@@ -151,6 +154,9 @@ public function testSetDefaultAddressAfterLogIn(
         $this->manager->setDefaultAddressAfterLogIn([$address]);
     }
 
+    /**
+     * @return array
+     */
     public function setAddressCustomerSessionLogInDataProvider()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Model/TaxClass/FactoryTest.php b/app/code/Magento/Tax/Test/Unit/Model/TaxClass/FactoryTest.php
index ee611b5320a8a..d124fc2f81902 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/TaxClass/FactoryTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/TaxClass/FactoryTest.php
@@ -39,6 +39,9 @@ public function testCreate($classType, $className, $classTypeMock)
         $this->assertEquals($classTypeMock, $taxClassFactory->create($classMock));
     }
 
+    /**
+     * @return array
+     */
     public function createDataProvider()
     {
         $customerClassMock = $this->createMock(\Magento\Tax\Model\TaxClass\Type\Customer::class);
diff --git a/app/code/Magento/Tax/Test/Unit/Model/TaxRuleRepositoryTest.php b/app/code/Magento/Tax/Test/Unit/Model/TaxRuleRepositoryTest.php
index f4151cd18ba66..3fddd5da47611 100644
--- a/app/code/Magento/Tax/Test/Unit/Model/TaxRuleRepositoryTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Model/TaxRuleRepositoryTest.php
@@ -168,6 +168,9 @@ public function testSaveWithExceptions($exceptionObject, $exceptionName, $except
         $this->model->save($rule);
     }
 
+    /**
+     * @return array
+     */
     public function saveExceptionsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Observer/AfterAddressSaveObserverTest.php b/app/code/Magento/Tax/Test/Unit/Observer/AfterAddressSaveObserverTest.php
index 14d678d02366b..96b4b81ae2817 100644
--- a/app/code/Magento/Tax/Test/Unit/Observer/AfterAddressSaveObserverTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Observer/AfterAddressSaveObserverTest.php
@@ -138,6 +138,9 @@ public function testExecute(
         $this->session->execute($this->observerMock);
     }
 
+    /**
+     * @return array
+     */
     public function getExecuteDataProvider()
     {
         return [
diff --git a/app/code/Magento/Tax/Test/Unit/Pricing/AdjustmentTest.php b/app/code/Magento/Tax/Test/Unit/Pricing/AdjustmentTest.php
index a92aa6a0d05eb..e7557e2164ca0 100644
--- a/app/code/Magento/Tax/Test/Unit/Pricing/AdjustmentTest.php
+++ b/app/code/Magento/Tax/Test/Unit/Pricing/AdjustmentTest.php
@@ -56,6 +56,9 @@ public function testIsIncludedInBasePrice($expectedResult)
         $this->assertEquals($expectedResult, $this->adjustment->isIncludedInBasePrice());
     }
 
+    /**
+     * @return array
+     */
     public function isIncludedInBasePriceDataProvider()
     {
         return [[true], [false]];
@@ -113,6 +116,9 @@ public function testExtractAdjustment($isPriceIncludesTax, $amount, $price, $exp
         $this->assertEquals($expectedResult, $this->adjustment->extractAdjustment($amount, $object));
     }
 
+    /**
+     * @return array
+     */
     public function extractAdjustmentDataProvider()
     {
         return [
@@ -164,6 +170,9 @@ public function testIsExcludedWith($adjustmentCode, $expectedResult)
         $this->assertEquals($expectedResult, $this->adjustment->isExcludedWith($adjustmentCode));
     }
 
+    /**
+     * @return array
+     */
     public function isExcludedWithDataProvider()
     {
         return [
diff --git a/app/code/Magento/Theme/Test/Unit/Block/Html/TopmenuTest.php b/app/code/Magento/Theme/Test/Unit/Block/Html/TopmenuTest.php
index 49066e79cb798..91c3ce47fc8b8 100644
--- a/app/code/Magento/Theme/Test/Unit/Block/Html/TopmenuTest.php
+++ b/app/code/Magento/Theme/Test/Unit/Block/Html/TopmenuTest.php
@@ -109,6 +109,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return Topmenu
+     */
     protected function getTopmenu()
     {
         return new Topmenu($this->context, $this->nodeFactory, $this->treeFactory);
diff --git a/app/code/Magento/Theme/Test/Unit/Model/Design/Backend/ThemeTest.php b/app/code/Magento/Theme/Test/Unit/Model/Design/Backend/ThemeTest.php
index d959b95dcb0ca..1725fe158c16c 100644
--- a/app/code/Magento/Theme/Test/Unit/Model/Design/Backend/ThemeTest.php
+++ b/app/code/Magento/Theme/Test/Unit/Model/Design/Backend/ThemeTest.php
@@ -123,6 +123,9 @@ public function testGetValue($value, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function getValueDataProvider()
     {
         return [
@@ -131,6 +134,9 @@ public function getValueDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function afterSaveDataProvider()
     {
         return [
diff --git a/app/code/Magento/Theme/Test/Unit/Model/Theme/ValidationTest.php b/app/code/Magento/Theme/Test/Unit/Model/Theme/ValidationTest.php
index 5d1c9f8cf7c3c..e302762c1c783 100644
--- a/app/code/Magento/Theme/Test/Unit/Model/Theme/ValidationTest.php
+++ b/app/code/Magento/Theme/Test/Unit/Model/Theme/ValidationTest.php
@@ -31,6 +31,9 @@ public function testValidate(array $data, $result, array $messages)
         $this->assertEquals($messages, $validator->getErrorMessages());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderValidate()
     {
         return [
diff --git a/app/code/Magento/Theme/Test/Unit/Model/ThemeTest.php b/app/code/Magento/Theme/Test/Unit/Model/ThemeTest.php
index 4ff64e6f694e8..b191a64ac2c21 100644
--- a/app/code/Magento/Theme/Test/Unit/Model/ThemeTest.php
+++ b/app/code/Magento/Theme/Test/Unit/Model/ThemeTest.php
@@ -481,6 +481,9 @@ public function testToArray(array $themeData, array $expected)
         $this->assertEquals($expected, $this->_model->toArray());
     }
 
+    /**
+     * @return array
+     */
     public function toArrayDataProvider()
     {
         $parentTheme = $this->getMockBuilder(\Magento\Theme\Model\Theme::class)
@@ -555,6 +558,9 @@ public function testPopulateFromArray(array $value, array $expected, $expectedCa
         $this->assertEquals($expected, $this->_model->getData());
     }
 
+    /**
+     * @return array
+     */
     public function populateFromArrayDataProvider()
     {
         return [
diff --git a/app/code/Magento/Theme/Test/Unit/Model/Wysiwyg/StorageTest.php b/app/code/Magento/Theme/Test/Unit/Model/Wysiwyg/StorageTest.php
index 86ee29b0759e8..0951f7b50f289 100644
--- a/app/code/Magento/Theme/Test/Unit/Model/Wysiwyg/StorageTest.php
+++ b/app/code/Magento/Theme/Test/Unit/Model/Wysiwyg/StorageTest.php
@@ -172,6 +172,9 @@ public function testUploadInvalidFile()
         $this->_storageModel->uploadFile($this->_storageRoot);
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function _prepareUploader()
     {
         $uploader = $this->createMock(\Magento\MediaStorage\Model\File\Uploader::class);
@@ -538,6 +541,9 @@ public function testDeleteRootDirectory()
         $this->_storageModel->deleteDirectory($directoryPath);
     }
 
+    /**
+     * @return array
+     */
     public function booleanCasesDataProvider()
     {
         return [[true], [false]];
diff --git a/app/code/Magento/Theme/Test/Unit/Ui/Component/Listing/Column/EditActionTest.php b/app/code/Magento/Theme/Test/Unit/Ui/Component/Listing/Column/EditActionTest.php
index 068738f17c967..2ac959d0a9881 100644
--- a/app/code/Magento/Theme/Test/Unit/Ui/Component/Listing/Column/EditActionTest.php
+++ b/app/code/Magento/Theme/Test/Unit/Ui/Component/Listing/Column/EditActionTest.php
@@ -82,6 +82,9 @@ public function testPrepareDataSource($dataSourceItem, $scope, $scopeId)
         $this->assertEquals($expectedDataSource, $dataSource);
     }
 
+    /**
+     * @return array
+     */
     public function getPrepareDataSourceDataProvider()
     {
         return [
diff --git a/app/code/Magento/Ui/Test/Unit/Component/Form/Element/AbstractElementTest.php b/app/code/Magento/Ui/Test/Unit/Component/Form/Element/AbstractElementTest.php
index 54bf0c9e8b37e..d9afe8f16a1a7 100644
--- a/app/code/Magento/Ui/Test/Unit/Component/Form/Element/AbstractElementTest.php
+++ b/app/code/Magento/Ui/Test/Unit/Component/Form/Element/AbstractElementTest.php
@@ -46,6 +46,9 @@ protected function setUp()
      */
     abstract protected function getModelName();
 
+    /**
+     * @return mixed
+     */
     abstract public function testGetComponentName();
 
     /**
diff --git a/app/code/Magento/Ui/Test/Unit/Component/Form/Element/WysiwygTest.php b/app/code/Magento/Ui/Test/Unit/Component/Form/Element/WysiwygTest.php
index 1d6c41b2c3ac1..b345989ba05ef 100644
--- a/app/code/Magento/Ui/Test/Unit/Component/Form/Element/WysiwygTest.php
+++ b/app/code/Magento/Ui/Test/Unit/Component/Form/Element/WysiwygTest.php
@@ -69,6 +69,9 @@ protected function setUp()
             ->method('getElementHtml');
     }
 
+    /**
+     * @return \Magento\Ui\Component\Form\Element\AbstractElement|object
+     */
     protected function getModel()
     {
         return $this->objectManager->getObject(Wysiwyg::class, [
diff --git a/app/code/Magento/Ui/Test/Unit/Component/MassActionTest.php b/app/code/Magento/Ui/Test/Unit/Component/MassActionTest.php
index 123b4cacf71a7..b2f494351597f 100644
--- a/app/code/Magento/Ui/Test/Unit/Component/MassActionTest.php
+++ b/app/code/Magento/Ui/Test/Unit/Component/MassActionTest.php
@@ -93,6 +93,9 @@ public function testPrepare($componentName, $componentData)
         $this->assertEquals(['actions' => [$action->getConfiguration()]], $massAction->getConfiguration());
     }
 
+    /**
+     * @return array
+     */
     public function getPrepareDataProvider()
     {
         return [
diff --git a/app/code/Magento/Ui/Test/Unit/Config/Converter/ActionsTest.php b/app/code/Magento/Ui/Test/Unit/Config/Converter/ActionsTest.php
index 8228026dff3d1..d146a18a710c6 100644
--- a/app/code/Magento/Ui/Test/Unit/Config/Converter/ActionsTest.php
+++ b/app/code/Magento/Ui/Test/Unit/Config/Converter/ActionsTest.php
@@ -61,6 +61,9 @@ public function testConvert(array $expectedResult, $xpath)
         $this->assertEquals($expectedResult, $this->converter->convert($actions));
     }
 
+    /**
+     * @return array
+     */
     public function convertDataProvider()
     {
         return [
diff --git a/app/code/Magento/Ui/Test/Unit/Config/Converter/OptionsTest.php b/app/code/Magento/Ui/Test/Unit/Config/Converter/OptionsTest.php
index 058e3651bde5c..8f5ab55f7a914 100644
--- a/app/code/Magento/Ui/Test/Unit/Config/Converter/OptionsTest.php
+++ b/app/code/Magento/Ui/Test/Unit/Config/Converter/OptionsTest.php
@@ -41,6 +41,9 @@ public function testConvert(array $expectedResult, $xpath)
         $this->assertEquals($expectedResult, $res);
     }
 
+    /**
+     * @return array
+     */
     public function convertDataProvider()
     {
         return [
diff --git a/app/code/Magento/Ui/Test/Unit/Model/ManagerTest.php b/app/code/Magento/Ui/Test/Unit/Model/ManagerTest.php
index e569688eaa8c6..e301741e9f048 100644
--- a/app/code/Magento/Ui/Test/Unit/Model/ManagerTest.php
+++ b/app/code/Magento/Ui/Test/Unit/Model/ManagerTest.php
@@ -193,6 +193,9 @@ public function testPrepareGetData($componentName, $componentData, $isCached, $r
         );
     }
 
+    /**
+     * @return array
+     */
     public function getComponentData()
     {
         $cachedData = new \ArrayObject(
@@ -293,6 +296,9 @@ public function testCreateRawComponentData($componentName, $configData, $compone
         $this->assertEquals($componentData, $this->manager->createRawComponentData($componentName, $needEvaluate));
     }
 
+    /**
+     * @return array
+     */
     public function getComponentDataProvider()
     {
         return [
diff --git a/app/code/Magento/UrlRewrite/Test/Unit/Helper/UrlRewriteTest.php b/app/code/Magento/UrlRewrite/Test/Unit/Helper/UrlRewriteTest.php
index e41a06cb0c9f0..b99c5c48c3de0 100644
--- a/app/code/Magento/UrlRewrite/Test/Unit/Helper/UrlRewriteTest.php
+++ b/app/code/Magento/UrlRewrite/Test/Unit/Helper/UrlRewriteTest.php
@@ -55,6 +55,9 @@ public function testValidateSuffixException($suffix)
         $this->_helper->validateSuffix($suffix);
     }
 
+    /**
+     * @return array
+     */
     public function requestPathDataProvider()
     {
         return [
@@ -63,6 +66,9 @@ public function requestPathDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function requestPathExceptionDataProvider()
     {
         return [
diff --git a/app/code/Magento/Variable/Test/Unit/Model/VariableTest.php b/app/code/Magento/Variable/Test/Unit/Model/VariableTest.php
index 87c1442048cf2..a4be2cd273407 100644
--- a/app/code/Magento/Variable/Test/Unit/Model/VariableTest.php
+++ b/app/code/Magento/Variable/Test/Unit/Model/VariableTest.php
@@ -163,6 +163,9 @@ public function testGetVariablesOptionArrayWithGroup()
         $this->assertEquals($transformedOptions, $this->model->getVariablesOptionArray(true));
     }
 
+    /**
+     * @return array
+     */
     public function validateDataProvider()
     {
         $variable = [
@@ -175,6 +178,9 @@ public function validateDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function validateMissingInfoDataProvider()
     {
         return [
diff --git a/app/code/Magento/Vault/Test/Unit/Observer/AfterPaymentSaveObserverTest.php b/app/code/Magento/Vault/Test/Unit/Observer/AfterPaymentSaveObserverTest.php
index efbe2e9745ef1..09c17d1e58d98 100644
--- a/app/code/Magento/Vault/Test/Unit/Observer/AfterPaymentSaveObserverTest.php
+++ b/app/code/Magento/Vault/Test/Unit/Observer/AfterPaymentSaveObserverTest.php
@@ -160,6 +160,9 @@ public function testPositiveCase($customerId, $createdAt, $token, $isActive, $me
         static::assertEquals($createdAt, $paymentToken->getCreatedAt());
     }
 
+    /**
+     * @return array
+     */
     public function positiveCaseDataProvider()
     {
         return [
diff --git a/app/code/Magento/Webapi/Test/Unit/Controller/PathProcessorTest.php b/app/code/Magento/Webapi/Test/Unit/Controller/PathProcessorTest.php
index 7f3fe558a98eb..c213c72b5185a 100644
--- a/app/code/Magento/Webapi/Test/Unit/Controller/PathProcessorTest.php
+++ b/app/code/Magento/Webapi/Test/Unit/Controller/PathProcessorTest.php
@@ -51,6 +51,9 @@ public function testAllStoreCode($storeCodeInPath, $storeCodeSet, $setCurrentSto
         $this->assertSame($this->endpointPath, $result);
     }
 
+    /**
+     * @return array
+     */
     public function processPathDataProvider()
     {
         return [
diff --git a/app/code/Magento/Webapi/Test/Unit/Model/Authorization/TokenUserContextTest.php b/app/code/Magento/Webapi/Test/Unit/Model/Authorization/TokenUserContextTest.php
index b45f3e1a13df1..fd9b0d9302a18 100644
--- a/app/code/Magento/Webapi/Test/Unit/Model/Authorization/TokenUserContextTest.php
+++ b/app/code/Magento/Webapi/Test/Unit/Model/Authorization/TokenUserContextTest.php
@@ -297,6 +297,9 @@ public function testValidToken($userType, $userId, $expectedUserType, $expectedU
         $this->assertEquals($expectedUserId, $this->tokenUserContext->getUserId());
     }
 
+    /**
+     * @return array
+     */
     public function getValidTokenData()
     {
         return [
diff --git a/app/code/Magento/Webapi/Test/Unit/Model/Rest/Swagger/GeneratorTest.php b/app/code/Magento/Webapi/Test/Unit/Model/Rest/Swagger/GeneratorTest.php
index 395add7fb1f60..66b59babb7189 100644
--- a/app/code/Magento/Webapi/Test/Unit/Model/Rest/Swagger/GeneratorTest.php
+++ b/app/code/Magento/Webapi/Test/Unit/Model/Rest/Swagger/GeneratorTest.php
@@ -295,6 +295,9 @@ public function testGetObjectSchema($typeName, $description, $result)
         $this->assertSame(json_encode($result), json_encode($actual));
     }
 
+    /**
+     * @return array
+     */
     public function getObjectSchemaDataProvider()
     {
         return [
@@ -354,6 +357,9 @@ public function testGenerateDefinition($typeData, $expected)
         $this->assertSame(json_encode($expected), json_encode($actual));
     }
 
+    /**
+     * @return array
+     */
     public function generateDefinitionDataProvider()
     {
         return [
diff --git a/app/code/Magento/WebapiAsync/Model/BulkServiceConfig.php b/app/code/Magento/WebapiAsync/Model/BulkServiceConfig.php
index 16f09ef9c5246..e404b8a82974b 100644
--- a/app/code/Magento/WebapiAsync/Model/BulkServiceConfig.php
+++ b/app/code/Magento/WebapiAsync/Model/BulkServiceConfig.php
@@ -75,6 +75,9 @@ public function getServices()
         return $this->services;
     }
 
+    /**
+     * @return array
+     */
     private function getBulkServicesConfig()
     {
         $bulkServices = [];
diff --git a/app/code/Magento/WebapiAsync/Test/Unit/Controller/PathProcessorTest.php b/app/code/Magento/WebapiAsync/Test/Unit/Controller/PathProcessorTest.php
index 935ef0e8c96e4..e5453f7574540 100644
--- a/app/code/Magento/WebapiAsync/Test/Unit/Controller/PathProcessorTest.php
+++ b/app/code/Magento/WebapiAsync/Test/Unit/Controller/PathProcessorTest.php
@@ -56,6 +56,9 @@ public function testAllStoreCode($storeCodeInPath, $storeCodeSet, $setCurrentSto
         $this->assertSame($this->endpointPath, $result);
     }
 
+    /**
+     * @return array
+     */
     public function processPathDataProvider()
     {
         return [
diff --git a/app/code/Magento/Weee/Test/Unit/Block/Item/Price/RendererTest.php b/app/code/Magento/Weee/Test/Unit/Block/Item/Price/RendererTest.php
index b49150fc6fac0..8b770ea763cdd 100644
--- a/app/code/Magento/Weee/Test/Unit/Block/Item/Price/RendererTest.php
+++ b/app/code/Magento/Weee/Test/Unit/Block/Item/Price/RendererTest.php
@@ -122,6 +122,9 @@ public function testDisplayPriceWithWeeeDetails(
         $this->assertEquals($expectedValue, $this->renderer->displayPriceWithWeeeDetails());
     }
 
+    /**
+     * @return array
+     */
     public function displayPriceWithWeeeDetailsDataProvider()
     {
         $data = [
@@ -472,6 +475,9 @@ public function testGetBaseRowDisplayPriceInclTax(
         $this->assertEquals($expectedValue, $this->renderer->getBaseRowDisplayPriceInclTax());
     }
 
+    /**
+     * @return array
+     */
     public function getDisplayPriceDataProvider()
     {
         $data = [
@@ -739,6 +745,9 @@ public function testGetBaseFinalRowDisplayPriceInclTax(
         $this->assertEquals($expectedValue, $this->renderer->getBaseFinalRowDisplayPriceInclTax());
     }
 
+    /**
+     * @return array
+     */
     public function getFinalDisplayPriceDataProvider()
     {
         $data = [
diff --git a/app/code/Magento/Weee/Test/Unit/Model/Total/Invoice/WeeeTest.php b/app/code/Magento/Weee/Test/Unit/Model/Total/Invoice/WeeeTest.php
index 975580945bb3a..22d673e0c8b26 100644
--- a/app/code/Magento/Weee/Test/Unit/Model/Total/Invoice/WeeeTest.php
+++ b/app/code/Magento/Weee/Test/Unit/Model/Total/Invoice/WeeeTest.php
@@ -78,6 +78,9 @@ protected function setUp()
         $this->invoice->expects($this->atLeastOnce())->method('getOrder')->will($this->returnValue($this->order));
     }
 
+    /**
+     * @param $orderData
+     */
     private function setupOrder($orderData)
     {
         //Set up order mock
diff --git a/app/code/Magento/Weee/Test/Unit/Observer/AfterAddressSaveTest.php b/app/code/Magento/Weee/Test/Unit/Observer/AfterAddressSaveTest.php
index 19f55550bac65..6d363847bf9e6 100644
--- a/app/code/Magento/Weee/Test/Unit/Observer/AfterAddressSaveTest.php
+++ b/app/code/Magento/Weee/Test/Unit/Observer/AfterAddressSaveTest.php
@@ -130,6 +130,9 @@ public function testExecute(
         $this->session->execute($this->observerMock);
     }
 
+    /**
+     * @return array
+     */
     public function getExecuteDataProvider()
     {
         return [
diff --git a/app/code/Magento/Weee/Test/Unit/Pricing/AdjustmentTest.php b/app/code/Magento/Weee/Test/Unit/Pricing/AdjustmentTest.php
index fb2d058217089..a0d0b6486c7d9 100644
--- a/app/code/Magento/Weee/Test/Unit/Pricing/AdjustmentTest.php
+++ b/app/code/Magento/Weee/Test/Unit/Pricing/AdjustmentTest.php
@@ -134,6 +134,9 @@ public function testIsExcludedWith($adjustmentCode, $expectedResult)
         $this->assertEquals($expectedResult, $this->adjustment->isExcludedWith($adjustmentCode));
     }
 
+    /**
+     * @return array
+     */
     public function isExcludedWithDataProvider()
     {
         return [
@@ -157,6 +160,9 @@ public function testGetSortOrder($isTaxable, $expectedResult)
         $this->assertEquals($expectedResult, $this->adjustment->getSortOrder());
     }
 
+    /**
+     * @return array
+     */
     public function getSortOrderProvider()
     {
         return [
diff --git a/app/code/Magento/Wishlist/Test/Unit/Block/Customer/Wishlist/Item/OptionsTest.php b/app/code/Magento/Wishlist/Test/Unit/Block/Customer/Wishlist/Item/OptionsTest.php
index 4b3ff8b8dd23e..36c51547c5a42 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Block/Customer/Wishlist/Item/OptionsTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Block/Customer/Wishlist/Item/OptionsTest.php
@@ -114,6 +114,9 @@ public function testGetConfiguredOptions($options, $callNum, $expected)
         $this->assertEquals($expected, $this->block->getConfiguredOptions());
     }
 
+    /**
+     * @return array
+     */
     public function getConfiguredOptionsDataProvider()
     {
         return [
diff --git a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/AllcartTest.php b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/AllcartTest.php
index d7195086850e4..2df44a912a09c 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/AllcartTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/AllcartTest.php
@@ -136,6 +136,9 @@ protected function prepareContext()
             ->willReturn($this->resultFactoryMock);
     }
 
+    /**
+     * @return \Magento\Wishlist\Controller\Index\Allcart
+     */
     public function getController()
     {
         $this->prepareContext();
diff --git a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/IndexTest.php b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/IndexTest.php
index 136d0f7f36c3e..7c6ba740aa18d 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/IndexTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/IndexTest.php
@@ -123,6 +123,9 @@ protected function prepareContext()
             ->willReturn($this->resultFactoryMock);
     }
 
+    /**
+     * @return \Magento\Wishlist\Controller\Index\Index
+     */
     public function getController()
     {
         $this->prepareContext();
diff --git a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/PluginTest.php b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/PluginTest.php
index 37c95d43bec95..399b48073b339 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/PluginTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/PluginTest.php
@@ -74,6 +74,9 @@ protected function tearDown()
         );
     }
 
+    /**
+     * @return \Magento\Wishlist\Controller\Index\Plugin
+     */
     protected function getPlugin()
     {
         return new \Magento\Wishlist\Controller\Index\Plugin(
diff --git a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/RemoveTest.php b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/RemoveTest.php
index 2a36d3beb8558..6260a1292bee9 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Controller/Index/RemoveTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Controller/Index/RemoveTest.php
@@ -139,6 +139,9 @@ protected function prepareContext()
             ->willReturn($this->resultFactoryMock);
     }
 
+    /**
+     * @return \Magento\Wishlist\Controller\Index\Remove
+     */
     public function getController()
     {
         $this->prepareContext();
diff --git a/app/code/Magento/Wishlist/Test/Unit/Model/ItemTest.php b/app/code/Magento/Wishlist/Test/Unit/Model/ItemTest.php
index 0b1057683de86..9876b3f6bb75e 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Model/ItemTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Model/ItemTest.php
@@ -172,6 +172,9 @@ public function testRemoveOptionByCode($code, $option)
         $this->assertTrue($actualOption->isDeleted());
     }
 
+    /**
+     * @return array
+     */
     public function getOptionsDataProvider()
     {
         $optionMock = $this->getMockBuilder(\Magento\Wishlist\Model\Item\Option::class)
diff --git a/app/code/Magento/Wishlist/Test/Unit/Model/LocaleQuantityProcessorTest.php b/app/code/Magento/Wishlist/Test/Unit/Model/LocaleQuantityProcessorTest.php
index 145d282554634..6cac17aa8c3da 100644
--- a/app/code/Magento/Wishlist/Test/Unit/Model/LocaleQuantityProcessorTest.php
+++ b/app/code/Magento/Wishlist/Test/Unit/Model/LocaleQuantityProcessorTest.php
@@ -60,6 +60,9 @@ public function testProcess($qtyResult, $expectedResult)
         $this->assertEquals($expectedResult, $this->processor->process($qty));
     }
 
+    /**
+     * @return array
+     */
     public function processDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Acl/Test/Unit/Role/RegistryTest.php b/lib/internal/Magento/Framework/Acl/Test/Unit/Role/RegistryTest.php
index 9f7269455555c..260d8a5ca70e5 100644
--- a/lib/internal/Magento/Framework/Acl/Test/Unit/Role/RegistryTest.php
+++ b/lib/internal/Magento/Framework/Acl/Test/Unit/Role/RegistryTest.php
@@ -20,6 +20,12 @@ protected function setUp()
         $this->model = new Registry();
     }
 
+    /**
+     * @param $roleId
+     * @param $parentRoleId
+     * @return array
+     * @throws \Zend_Acl_Role_Registry_Exception
+     */
     protected function initRoles($roleId, $parentRoleId)
     {
         $parentRole = $this->createMock(\Zend_Acl_Role_Interface::class);
diff --git a/lib/internal/Magento/Framework/Api/Test/Unit/Code/Generator/EntityChildTestAbstract.php b/lib/internal/Magento/Framework/Api/Test/Unit/Code/Generator/EntityChildTestAbstract.php
index 47f520d4ee28a..c1ab91e3ccaa6 100644
--- a/lib/internal/Magento/Framework/Api/Test/Unit/Code/Generator/EntityChildTestAbstract.php
+++ b/lib/internal/Magento/Framework/Api/Test/Unit/Code/Generator/EntityChildTestAbstract.php
@@ -31,12 +31,24 @@ abstract class EntityChildTestAbstract extends \PHPUnit\Framework\TestCase
     /** @var \PHPUnit_Framework_MockObject_MockObject | \Magento\Framework\Code\Generator\DefinedClasses */
     protected $definedClassesMock;
 
+    /**
+     * @return mixed
+     */
     abstract protected function getSourceClassName();
 
+    /**
+     * @return mixed
+     */
     abstract protected function getResultClassName();
 
+    /**
+     * @return mixed
+     */
     abstract protected function getGeneratorClassName();
 
+    /**
+     * @return mixed
+     */
     abstract protected function getOutputFileName();
 
     protected function setUp()
diff --git a/lib/internal/Magento/Framework/Api/Test/Unit/DataObjectHelperTest.php b/lib/internal/Magento/Framework/Api/Test/Unit/DataObjectHelperTest.php
index 4946f083004ba..f4855a6f69066 100644
--- a/lib/internal/Magento/Framework/Api/Test/Unit/DataObjectHelperTest.php
+++ b/lib/internal/Magento/Framework/Api/Test/Unit/DataObjectHelperTest.php
@@ -367,6 +367,9 @@ public function testMergeDataObjects($data1, $data2)
         $this->assertSame($firstAddressDataObject->getRegion(), $secondAddressDataObject->getRegion());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestMergeDataObjects()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Api/Test/Unit/SortOrderTest.php b/lib/internal/Magento/Framework/Api/Test/Unit/SortOrderTest.php
index 05ecc0bdbcc61..c2ecf51e8afc4 100644
--- a/lib/internal/Magento/Framework/Api/Test/Unit/SortOrderTest.php
+++ b/lib/internal/Magento/Framework/Api/Test/Unit/SortOrderTest.php
@@ -37,6 +37,9 @@ public function testItReturnsTheCorrectValuesIfSortOrderIsSet($sortOrder)
         $this->assertSame($sortOrder, $this->sortOrder->getDirection());
     }
 
+    /**
+     * @return array
+     */
     public function sortOrderDirectionProvider()
     {
         return [[SortOrder::SORT_ASC], [SortOrder::SORT_DESC]];
@@ -52,6 +55,9 @@ public function testItThrowsAnExceptionIfAnInvalidSortOrderIsSet($invalidDirecti
         $this->sortOrder->setDirection($invalidDirection);
     }
 
+    /**
+     * @return array
+     */
     public function invalidSortDirectionProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Action/Stub/ActionStub.php b/lib/internal/Magento/Framework/App/Test/Unit/Action/Stub/ActionStub.php
index ee45842013f64..c157f818242ef 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Action/Stub/ActionStub.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Action/Stub/ActionStub.php
@@ -8,6 +8,9 @@
 
 class ActionStub extends \Magento\Framework\App\Action\Action
 {
+    /**
+     * @return \Magento\Framework\App\ResponseInterface|\Magento\Framework\Controller\ResultInterface|void
+     */
     public function execute()
     {
         // Empty method stub for test
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/AreaTest.php b/lib/internal/Magento/Framework/App/Test/Unit/AreaTest.php
index 678bb7a85272f..1813ff147190c 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/AreaTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/AreaTest.php
@@ -276,6 +276,9 @@ public function testDetectDesignByRequest($value, $callNum, $callNum2)
         $this->object->detectDesign($requestMock);
     }
 
+    /**
+     * @return array
+     */
     public function detectDesignByRequestDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/BootstrapTest.php b/lib/internal/Magento/Framework/App/Test/Unit/BootstrapTest.php
index 1e2947084ee6b..bfa96a1702879 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/BootstrapTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/BootstrapTest.php
@@ -189,6 +189,9 @@ public function testIsDeveloperMode($modeFromEnvironment, $modeFromDeployment, $
         $this->assertEquals($isDeveloper, $bootstrap->isDeveloperMode());
     }
 
+    /**
+     * @return array
+     */
     public function testIsDeveloperModeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Cache/Frontend/PoolTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Cache/Frontend/PoolTest.php
index fdb962d7d295e..bfa37311884ba 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Cache/Frontend/PoolTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Cache/Frontend/PoolTest.php
@@ -105,6 +105,9 @@ public function testInitializationParams(
         $model->current();
     }
 
+    /**
+     * @return array
+     */
     public function initializationParamsDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/ConfigTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/ConfigTest.php
index 74a92d54f1934..380c45e383128 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/ConfigTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/ConfigTest.php
@@ -157,6 +157,9 @@ public function testCleanModeMatchingAnyTag($fixtureResultOne, $fixtureResultTwo
         $this->assertEquals($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function cleanModeMatchingAnyTagDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/FrontendPoolTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/FrontendPoolTest.php
index e8c0217b40b2c..bcae099815c98 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/FrontendPoolTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Cache/Type/FrontendPoolTest.php
@@ -89,6 +89,9 @@ public function testGet($fixtureConfigData, $inputCacheType, $expectedFrontendId
         $this->assertSame($accessProxy, $this->_model->get($inputCacheType));
     }
 
+    /**
+     * @return array
+     */
     public function getDataProvider()
     {
         $configData1 = [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/CacheTest.php b/lib/internal/Magento/Framework/App/Test/Unit/CacheTest.php
index 236a65611422d..bb5748e0759a0 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/CacheTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/CacheTest.php
@@ -147,6 +147,9 @@ public function testSave($inputData, $inputId, $inputTags, $expectedData, $expec
         $this->_model->save($inputData, $inputId, $inputTags);
     }
 
+    /**
+     * @return array
+     */
     public function saveDataProvider()
     {
         $configTag = \Magento\Framework\App\Config::CACHE_TAG;
@@ -190,6 +193,9 @@ public function testRemove($result)
         $this->assertEquals($result, $this->_model->remove('test_id'));
     }
 
+    /**
+     * @return array
+     */
     public function successFailureDataProvider()
     {
         return ['success' => [true], 'failure' => [false]];
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Config/ConfigPathResolverTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Config/ConfigPathResolverTest.php
index 3cf552ae115a5..3adc4bada0665 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Config/ConfigPathResolverTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Config/ConfigPathResolverTest.php
@@ -55,6 +55,9 @@ public function testResolve($path, $scope, $scopeCode, $type, $expected)
         $this->assertSame($expected, $this->model->resolve($path, $scope, $scopeCode, $type));
     }
 
+    /**
+     * @return array
+     */
     public function resolveDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Config/DataTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Config/DataTest.php
index f106ba6e151fd..6f137ede742ff 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Config/DataTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Config/DataTest.php
@@ -35,6 +35,9 @@ public function testSetValue($path, $value)
         $this->assertEquals($value, $this->_model->getValue($path));
     }
 
+    /**
+     * @return array
+     */
     public function setValueDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Config/InitialTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Config/InitialTest.php
index 3d1cdf0023cc9..29ccd33d73d3b 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Config/InitialTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Config/InitialTest.php
@@ -65,6 +65,9 @@ public function testGetData($scope, $expected)
         $this->assertEquals($expected, $this->config->getData($scope));
     }
 
+    /**
+     * @return array
+     */
     public function getDataDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Config/ValueTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Config/ValueTest.php
index ef2b342936cd9..6159e5cac45e8 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Config/ValueTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Config/ValueTest.php
@@ -184,6 +184,9 @@ public function testAfterSave($callNumber, $oldValue)
         $this->assertInstanceOf(get_class($this->model), $this->model->afterSave());
     }
 
+    /**
+     * @return array
+     */
     public function afterSaveDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/ConfigTest.php b/lib/internal/Magento/Framework/App/Test/Unit/ConfigTest.php
index f94c30b4fa3c8..da9826bfe8c95 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/ConfigTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/ConfigTest.php
@@ -73,6 +73,9 @@ public function testGetValue($scope, $scopeCode = null)
         $this->assertTrue($this->appConfig->getValue($path, $scope, $scopeCode ?: $this->scope));
     }
 
+    /**
+     * @return array
+     */
     public function getValueDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Console/MaintenanceModeEnablerTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Console/MaintenanceModeEnablerTest.php
index 942a6ed3ec6fc..b0891fca62f45 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Console/MaintenanceModeEnablerTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Console/MaintenanceModeEnablerTest.php
@@ -88,6 +88,9 @@ public function testFailedTaskWithRestoredModeOnFailure(bool $maintenanceModeEna
         }
     }
 
+    /**
+     * @return array
+     */
     public function initialAppStateProvider()
     {
         return [
@@ -96,6 +99,10 @@ public function initialAppStateProvider()
         ];
     }
 
+    /**
+     * @param bool $isOn
+     * @return MaintenanceMode
+     */
     private function createMaintenanceMode(bool $isOn): MaintenanceMode
     {
         $maintenanceMode = $this->getMockBuilder(MaintenanceMode::class)
@@ -113,6 +120,9 @@ private function createMaintenanceMode(bool $isOn): MaintenanceMode
         return $maintenanceMode;
     }
 
+    /**
+     * @return OutputInterface
+     */
     private function createOutput(): OutputInterface
     {
         $output = $this->getMockBuilder(OutputInterface::class)
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Console/ResponseTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Console/ResponseTest.php
index ec678d21a581b..18de140af8428 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Console/ResponseTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Console/ResponseTest.php
@@ -34,6 +34,9 @@ public function testSetCode($code, $expectedCode)
         $this->assertEquals($expectedCode, $result);
     }
 
+    /**
+     * @return array
+     */
     public static function setCodeProvider()
     {
         $largeCode = 256;
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/CronTest.php b/lib/internal/Magento/Framework/App/Test/Unit/CronTest.php
index e2c77864d8e82..ce1f1661ad827 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/CronTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/CronTest.php
@@ -56,6 +56,9 @@ protected function setUp()
         );
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function prepareAreaListMock()
     {
         $areaMock = $this->createMock(\Magento\Framework\App\Area::class);
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/DeploymentConfigTest.php b/lib/internal/Magento/Framework/App/Test/Unit/DeploymentConfigTest.php
index fa41d717cc521..80ab2302dc91c 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/DeploymentConfigTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/DeploymentConfigTest.php
@@ -127,6 +127,9 @@ public function testKeyCollision(array $data)
         $object->get();
     }
 
+    /**
+     * @return array
+     */
     public function keyCollisionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/DocRootLocatorTest.php b/lib/internal/Magento/Framework/App/Test/Unit/DocRootLocatorTest.php
index 7fda8de6d3216..23afbbc73d2b9 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/DocRootLocatorTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/DocRootLocatorTest.php
@@ -29,6 +29,9 @@ public function testIsPub($path, $isExist, $result)
         $this->assertSame($result, $model->isPub());
     }
 
+    /**
+     * @return array
+     */
     public function isPubDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/ErrorHandlerTest.php b/lib/internal/Magento/Framework/App/Test/Unit/ErrorHandlerTest.php
index daf3a4bdfab0c..4b904cc2b55bd 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/ErrorHandlerTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/ErrorHandlerTest.php
@@ -32,6 +32,9 @@ public function testHandler($errorNo, $errorStr, $errorFile, $expectedResult)
         $this->assertEquals($expectedResult, $this->object->handler($errorNo, $errorStr, $errorFile, 11));
     }
 
+    /**
+     * @return array
+     */
     public function handlerProvider()
     {
         return [
@@ -60,6 +63,9 @@ public function testHandlerException($errorNo, $errorPhrase)
         $this->object->handler($errorNo, $errorStr, $errorFile, $errorLine);
     }
 
+    /**
+     * @return array
+     */
     public function handlerProviderException()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/PageCache/IdentifierTest.php b/lib/internal/Magento/Framework/App/Test/Unit/PageCache/IdentifierTest.php
index 15f6bed1ac0d3..23906486634ec 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/PageCache/IdentifierTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/PageCache/IdentifierTest.php
@@ -144,6 +144,9 @@ public function testVaryStringSource($cookieExists)
         $this->model->getValue();
     }
 
+    /**
+     * @return array
+     */
     public function trueFalseDataProvider()
     {
         return [[true], [false]];
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/PageCache/KernelTest.php b/lib/internal/Magento/Framework/App/Test/Unit/PageCache/KernelTest.php
index 20ea5d1a3e86f..db200f962f5b5 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/PageCache/KernelTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/PageCache/KernelTest.php
@@ -241,6 +241,9 @@ function ($value) {
         $this->kernel->process($this->responseMock);
     }
 
+    /**
+     * @return array
+     */
     public function testProcessSaveCacheDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/ProductMetadataTest.php b/lib/internal/Magento/Framework/App/Test/Unit/ProductMetadataTest.php
index 74e673c8bfc26..8e1acc89437e2 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/ProductMetadataTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/ProductMetadataTest.php
@@ -45,6 +45,9 @@ public function testGetVersion($packageList, $expectedVersion)
         $this->assertEquals($expectedVersion, $productVersion);
     }
 
+    /**
+     * @return array
+     */
     public function testGetVersionGitInstallationDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Request/HttpTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Request/HttpTest.php
index 66eee671e17d3..62445d4244fb7 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Request/HttpTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Request/HttpTest.php
@@ -259,6 +259,9 @@ public function testGetDistroBaseUrlPath($scriptName, $expected)
         $this->assertEquals($expected, Http::getDistroBaseUrlPath(['SCRIPT_NAME' => $scriptName]));
     }
 
+    /**
+     * @return array
+     */
     public function getDistroBaseUrlPathDataProvider()
     {
         return [
@@ -273,6 +276,9 @@ public function getDistroBaseUrlPathDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function serverVariablesProvider()
     {
         $returnValue = [];
@@ -378,6 +384,9 @@ public function testIsSafeMethodFalse($httpMethod)
         $this->assertEquals(false, $this->_model->isSafeMethod());
     }
 
+    /**
+     * @return array
+     */
     public function httpSafeMethodProvider()
     {
         return [
@@ -388,6 +397,9 @@ public function httpSafeMethodProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function httpNotSafeMethodProvider()
     {
         return [
@@ -400,6 +412,9 @@ public function httpNotSafeMethodProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function isSecureDataProvider()
     {
         /**
@@ -442,6 +457,9 @@ public function testSetPathInfo($requestUri, $basePath, $expected)
         $this->assertEquals($expected, $this->_model->getPathInfo());
     }
 
+    /**
+     * @return array
+     */
     public function setPathInfoDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/Router/ActionListTest.php b/lib/internal/Magento/Framework/App/Test/Unit/Router/ActionListTest.php
index 0bdbcccc40b35..e1a2171d2111a 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/Router/ActionListTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/Router/ActionListTest.php
@@ -93,6 +93,9 @@ public function testGet($module, $area, $namespace, $action, $data, $expected)
         $this->assertEquals($expected, $this->actionList->get($module, $area, $namespace, $action));
     }
 
+    /**
+     * @return array
+     */
     public function getDataProvider()
     {
         $mockClassName = 'Mock_Action_Class';
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/ScopeResolverPoolTest.php b/lib/internal/Magento/Framework/App/Test/Unit/ScopeResolverPoolTest.php
index 7a54cf17a87e4..0b7e0e00a2df8 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/ScopeResolverPoolTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/ScopeResolverPoolTest.php
@@ -49,6 +49,9 @@ public function testGetException($scope)
         $scopeResolver->get($scope);
     }
 
+    /**
+     * @return array
+     */
     public function testGetExceptionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/SetupInfoTest.php b/lib/internal/Magento/Framework/App/Test/Unit/SetupInfoTest.php
index 3db75f7ec7fb2..ae8a76f7bbc1f 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/SetupInfoTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/SetupInfoTest.php
@@ -29,6 +29,9 @@ public function testConstructorExceptions($server, $expectedError)
         new SetupInfo($server);
     }
 
+    /**
+     * @return array
+     */
     public function constructorExceptionsDataProvider()
     {
         $docRootErr = 'DOCUMENT_ROOT variable is unavailable.';
diff --git a/lib/internal/Magento/Framework/App/Test/Unit/StateTest.php b/lib/internal/Magento/Framework/App/Test/Unit/StateTest.php
index 46eec1e692424..a87322b6e90d9 100644
--- a/lib/internal/Magento/Framework/App/Test/Unit/StateTest.php
+++ b/lib/internal/Magento/Framework/App/Test/Unit/StateTest.php
@@ -87,6 +87,10 @@ public function testEmulateAreaCode()
         $this->assertEquals($this->model->getAreaCode(), $areaCode);
     }
 
+    /**
+     * @return string
+     * @throws \Magento\Framework\Exception\LocalizedException
+     */
     public function emulateAreaCodeCallback()
     {
         return $this->model->getAreaCode();
diff --git a/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/CompressionTest.php b/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/CompressionTest.php
index 172d0e486dc64..7e8347a9d2103 100644
--- a/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/CompressionTest.php
+++ b/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/CompressionTest.php
@@ -129,12 +129,21 @@ public function testSaveLoad()
         $this->assertEquals($this->_testString, $loadedValue);
     }
 
+    /**
+     * @param $data
+     * @param $cacheId
+     * @return bool
+     */
     public static function mockSave($data, $cacheId)
     {
         self::$_cacheStorage[$cacheId] = $data;
         return true;
     }
 
+    /**
+     * @param $cacheId
+     * @return bool|mixed
+     */
     public static function mockLoad($cacheId)
     {
         return array_key_exists($cacheId, self::$_cacheStorage) ? self::$_cacheStorage[$cacheId] : false;
diff --git a/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/DecoratorAbstractTest.php b/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/DecoratorAbstractTest.php
index 7a3aec7b66488..ba75b7eed52ca 100644
--- a/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/DecoratorAbstractTest.php
+++ b/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/Decorator/DecoratorAbstractTest.php
@@ -63,6 +63,9 @@ public function testConstructorException($options)
         $this->getMockForAbstractClass(\Magento\Framework\Cache\Backend\Decorator\AbstractDecorator::class, [$options]);
     }
 
+    /**
+     * @return array
+     */
     public function constructorExceptionDataProvider()
     {
         return [
@@ -86,6 +89,9 @@ public function testAllMethods($methodName)
         call_user_func([$decorator, $methodName], null, null);
     }
 
+    /**
+     * @return array
+     */
     public function allMethodsDataProvider()
     {
         $return = [];
diff --git a/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/MongoDbTest.php b/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/MongoDbTest.php
index daa3081a07c35..435fc6535c1a2 100644
--- a/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/MongoDbTest.php
+++ b/lib/internal/Magento/Framework/Cache/Test/Unit/Backend/MongoDbTest.php
@@ -45,6 +45,9 @@ public function testGetIds(array $ids, array $expected)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function getIdsDataProvider()
     {
         return [
@@ -64,6 +67,9 @@ public function testGetTags(array $tags)
         $this->assertEquals($tags, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function getTagsDataProvider()
     {
         return ['no tags' => [[]], 'multiple tags' => [['tag1', 'tag2']]];
@@ -92,6 +98,9 @@ public function testGetIdsMatchingTags($method, $tags, $expectedInput)
         $this->assertEquals($expectedIds, $actualIds);
     }
 
+    /**
+     * @return array
+     */
     public function getIdsMatchingTagsDataProvider()
     {
         return [
@@ -170,6 +179,9 @@ public function testGetMetadatas($cacheId, $expectedInput, $mongoOutput, $expect
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function getMetadatasDataProvider()
     {
         $time = time();
@@ -237,6 +249,9 @@ public function testLoad($doNotTestValidity)
         $this->assertSame($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function loadDataProvider()
     {
         return ['test validity' => [false], 'do not test validity' => [true]];
@@ -322,6 +337,9 @@ public function testClean($mode, $tags, $expectedQuery)
         $this->_model->clean($mode, $tags);
     }
 
+    /**
+     * @return array
+     */
     public function cleanDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Cache/Test/Unit/CoreTest.php b/lib/internal/Magento/Framework/Cache/Test/Unit/CoreTest.php
index 616c55f600e9e..4b634ae18c7af 100644
--- a/lib/internal/Magento/Framework/Cache/Test/Unit/CoreTest.php
+++ b/lib/internal/Magento/Framework/Cache/Test/Unit/CoreTest.php
@@ -61,6 +61,9 @@ public function testSetBackendException($decorators)
         $core->setBackend($this->_mockBackend);
     }
 
+    /**
+     * @return array
+     */
     public function setBackendExceptionProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Adapter/ZendTest.php b/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Adapter/ZendTest.php
index 129fade7b4a9c..4ed199f9c62fc 100644
--- a/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Adapter/ZendTest.php
+++ b/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Adapter/ZendTest.php
@@ -86,6 +86,9 @@ public function testCleanException($cleaningMode, $expectedErrorMessage)
         $object->clean($cleaningMode);
     }
 
+    /**
+     * @return array
+     */
     public function cleanExceptionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Decorator/TagScopeTest.php b/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Decorator/TagScopeTest.php
index 12774f182d6cd..33105ab52150c 100644
--- a/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Decorator/TagScopeTest.php
+++ b/lib/internal/Magento/Framework/Cache/Test/Unit/Frontend/Decorator/TagScopeTest.php
@@ -128,6 +128,9 @@ public function testCleanModeMatchingAnyTag($fixtureResultOne, $fixtureResultTwo
         $this->assertEquals($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function cleanModeMatchingAnyTagDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Generator/DefinedClassesTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/Generator/DefinedClassesTest.php
index 658b42e4b972d..abd413832f206 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Generator/DefinedClassesTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Generator/DefinedClassesTest.php
@@ -8,6 +8,10 @@
 namespace Magento\Framework\Code\Generator {
     use Magento\Framework\Code\Test\Unit\Generator\DefinedClassesTest;
 
+    /**
+     * @param $className
+     * @return bool
+     */
     function class_exists($className)
     {
         return DefinedClassesTest::$definedClassesTestActive
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Generator/InterfaceGeneratorTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/Generator/InterfaceGeneratorTest.php
index 0f3daa46e1ec3..6462b3806647a 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Generator/InterfaceGeneratorTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Generator/InterfaceGeneratorTest.php
@@ -114,6 +114,9 @@ public function testGeneratePredefinedContentNotSet()
         $this->assertEquals($expectedContent, $generatedContent, "Generated content is invalid.");
     }
 
+    /**
+     * @return array
+     */
     public function generateDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Generator/IoTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/Generator/IoTest.php
index 9c63de1258d15..bc2ba24a2f9fe 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Generator/IoTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Generator/IoTest.php
@@ -111,6 +111,9 @@ public function testWriteResultFileAlreadyExists($resultFileName, $fileExists, $
         $this->assertSame($success, $this->_object->writeResultFile($resultFileName, self::FILE_CONTENT));
     }
 
+    /**
+     * @return array
+     */
     public function testWriteResultFileAlreadyExistsDataProvider()
     {
         return [
@@ -202,6 +205,9 @@ public function testFileExists($fileName, $exists)
         $this->assertSame($exists, $this->_object->fileExists($fileName));
     }
 
+    /**
+     * @return array
+     */
     public function fileExistsDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/GeneratorTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/GeneratorTest.php
index dfb547ae3d53f..bd58e7d0e8a2f 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/GeneratorTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/GeneratorTest.php
@@ -129,6 +129,9 @@ public function testGenerateClassWithExistName($fileExists)
         );
     }
 
+    /**
+     * @return array
+     */
     public function trueFalseDataProvider()
     {
         return [[true], [false]];
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/NameBuilderTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/NameBuilderTest.php
index 588cdfa1d4f7f..b8d49f64569f9 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/NameBuilderTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/NameBuilderTest.php
@@ -29,6 +29,9 @@ public function testBuildClassName($parts, $expected)
         $this->assertEquals($expected, $this->nameBuilder->buildClassName($parts));
     }
 
+    /**
+     * @return array
+     */
     public function buildClassNameDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Reader/ArgumentsReaderTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/Reader/ArgumentsReaderTest.php
index 64bcb8970612e..e465e01916690 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Reader/ArgumentsReaderTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Reader/ArgumentsReaderTest.php
@@ -263,6 +263,9 @@ public function testIsCompatibleType($requiredType, $actualType, $expectedResult
         $this->assertEquals($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function testIsCompatibleTypeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Validator/TypeDuplicationTest.php b/lib/internal/Magento/Framework/Code/Test/Unit/Validator/TypeDuplicationTest.php
index a82c88e3e18b1..b17b10106f8a9 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Validator/TypeDuplicationTest.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Validator/TypeDuplicationTest.php
@@ -34,6 +34,9 @@ public function testValidClasses($className)
         $this->assertTrue($this->_validator->validate($className));
     }
 
+    /**
+     * @return array
+     */
     public function validClassesDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForArgumentSequence.php b/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForArgumentSequence.php
index 90f422fb16777..1daa394bc7b2b 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForArgumentSequence.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForArgumentSequence.php
@@ -40,6 +40,15 @@ class ParentClass
 
     protected $parentOptionalScalar;
 
+    /**
+     * ParentClass constructor.
+     * @param ContextObject $contextObject
+     * @param ParentRequiredObject $parentRequiredObject
+     * @param array $parentRequiredScalar
+     * @param ParentOptionalObject|null $parentOptionalObject
+     * @param array $data
+     * @param array $parentOptionalScalar
+     */
     public function __construct(
         ContextObject $contextObject,
         ParentRequiredObject $parentRequiredObject,
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForConstructorIntegrity.php b/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForConstructorIntegrity.php
index d61042c70e406..3078e7f4fc6d5 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForConstructorIntegrity.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/Validator/_files/ClassesForConstructorIntegrity.php
@@ -57,6 +57,14 @@ class Context implements \Magento\Framework\ObjectManager\ContextInterface
      */
     protected $_implOfBInterface;
 
+    /**
+     * Context constructor.
+     * @param ClassA $exA
+     * @param ClassB $exB
+     * @param ClassC $exC
+     * @param FirstInterface $interfaceA
+     * @param ImplementationOfSecondInterface $implOfBInterface
+     */
     public function __construct(
         \ClassA $exA,
         \ClassB $exB,
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Five/Test.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Five/Test.php
index 8a9d9866126bf..9e38bf2be7d49 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Five/Test.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Five/Test.php
@@ -14,6 +14,10 @@ class Test extends \Magento\SomeModule\Model\Three\Test
      */
     protected $_proxy;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Model\Proxy $proxy
+     */
     public function __construct(\Magento\SomeModule\Model\Proxy $proxy)
     {
         parent::__construct($proxy);
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Four/Test.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Four/Test.php
index 4701e76f08c59..7368ff1e7e767 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Four/Test.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Four/Test.php
@@ -15,6 +15,11 @@ class Test extends \Magento\SomeModule\Model\One\Test
      */
     protected $_factory;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Model\Proxy $proxy
+     * @param \Magento\SomeModule\Model\ElementFactory $factory
+     */
     public function __construct(
         \Magento\SomeModule\Model\Proxy $proxy,
         \Magento\SomeModule\Model\ElementFactory $factory
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/One/Test.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/One/Test.php
index 90f5d40ab726d..9bb858cc16751 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/One/Test.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/One/Test.php
@@ -13,6 +13,10 @@ class Test
      */
     protected $_proxy;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Model\Proxy $proxy
+     */
     public function __construct(\Magento\SomeModule\Model\Proxy $proxy)
     {
         $this->_proxy = $proxy;
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/SevenInterface.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/SevenInterface.php
index 66c74bbf04e6f..e47af0bcced3e 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/SevenInterface.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/SevenInterface.php
@@ -45,6 +45,9 @@ public static function testMethod1(array &$data = []);
      */
     public function testMethod2($data = 'test_default', $flag = true);
 
+    /**
+     * @return mixed
+     */
     public function testMethod3();
 
 
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Six/Test.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Six/Test.php
index 0c736710f5c4e..6fe98d08547b6 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Six/Test.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Six/Test.php
@@ -15,6 +15,11 @@ class Test extends \Magento\SomeModule\Model\One\Test
      */
     protected $_factory;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Model\Proxy $proxy
+     * @param \Magento\SomeModule\Model\ElementFactory $factory
+     */
     public function __construct(
         \Magento\SomeModule\Model\Proxy $proxy,
         \Magento\SomeModule\Model\ElementFactory $factory
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Three/Test.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Three/Test.php
index d080034ef978e..90086f1b1d50e 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Three/Test.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Three/Test.php
@@ -20,6 +20,11 @@ class Test extends \Magento\SomeModule\Model\Two\Test
      */
     protected $_proxy;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Model\Proxy $proxy
+     * @param \Magento\SomeModule\Model\ElementFactory $factory
+     */
     public function __construct(
         \Magento\SomeModule\Model\Proxy $proxy,
         \Magento\SomeModule\Model\ElementFactory $factory
diff --git a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Two/Test.php b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Two/Test.php
index dee0b216b7641..f4ba4ab8e6a3e 100644
--- a/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Two/Test.php
+++ b/lib/internal/Magento/Framework/Code/Test/Unit/_files/app/code/Magento/SomeModule/Model/Two/Test.php
@@ -14,6 +14,11 @@ class Test extends \Magento\SomeModule\Model\One\Test
      */
     protected $_proxy;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Model\Proxy $proxy
+     * @param array $data
+     */
     public function __construct(\Magento\SomeModule\Model\Proxy $proxy, $data = [])
     {
         $this->_proxy = $proxy;
diff --git a/lib/internal/Magento/Framework/Composer/Test/Unit/ComposerInformationTest.php b/lib/internal/Magento/Framework/Composer/Test/Unit/ComposerInformationTest.php
index 4ca43591c96ff..74f8c1dcdb875 100644
--- a/lib/internal/Magento/Framework/Composer/Test/Unit/ComposerInformationTest.php
+++ b/lib/internal/Magento/Framework/Composer/Test/Unit/ComposerInformationTest.php
@@ -92,6 +92,9 @@ public function testIsMagentoRoot($packageName, $expected)
         $this->assertEquals($expected, $this->composerInformation->isMagentoRoot());
     }
 
+    /**
+     * @return array
+     */
     public function isMagentoRootDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Config/Test/Unit/Converter/DomTest.php b/lib/internal/Magento/Framework/Config/Test/Unit/Converter/DomTest.php
index 09366c91a73a3..2ef915dc836df 100644
--- a/lib/internal/Magento/Framework/Config/Test/Unit/Converter/DomTest.php
+++ b/lib/internal/Magento/Framework/Config/Test/Unit/Converter/DomTest.php
@@ -24,6 +24,9 @@ public function testConvert($sourceFile, $resultFile)
         $this->assertEquals($resultFile, $converterDom->convert($dom));
     }
 
+    /**
+     * @return array
+     */
     public function convertDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Config/Test/Unit/Data/ConfigDataTest.php b/lib/internal/Magento/Framework/Config/Test/Unit/Data/ConfigDataTest.php
index 619135f9c7038..747560b29dfc1 100644
--- a/lib/internal/Magento/Framework/Config/Test/Unit/Data/ConfigDataTest.php
+++ b/lib/internal/Magento/Framework/Config/Test/Unit/Data/ConfigDataTest.php
@@ -47,6 +47,9 @@ public function testSetWrongKey($key, $expectedException)
         $configData->set($key, 'value');
     }
 
+    /**
+     * @return array
+     */
     public function setWrongKeyDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Config/Test/Unit/Data/ScopedTest.php b/lib/internal/Magento/Framework/Config/Test/Unit/Data/ScopedTest.php
index 380d095d85e64..f8c518d35add7 100644
--- a/lib/internal/Magento/Framework/Config/Test/Unit/Data/ScopedTest.php
+++ b/lib/internal/Magento/Framework/Config/Test/Unit/Data/ScopedTest.php
@@ -81,6 +81,9 @@ public function testGetConfigByPath($path, $expectedValue, $default)
         $this->assertEquals($expectedValue, $this->_model->get($path, $default));
     }
 
+    /**
+     * @return array
+     */
     public function getConfigByPathDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Config/Test/Unit/Dom/NodePathMatcherTest.php b/lib/internal/Magento/Framework/Config/Test/Unit/Dom/NodePathMatcherTest.php
index 94197fe737918..a2fbdce771f94 100644
--- a/lib/internal/Magento/Framework/Config/Test/Unit/Dom/NodePathMatcherTest.php
+++ b/lib/internal/Magento/Framework/Config/Test/Unit/Dom/NodePathMatcherTest.php
@@ -32,6 +32,9 @@ public function testMatch($pathPattern, $xpathSubject, $expectedResult)
         $this->assertSame($expectedResult, $actualResult);
     }
 
+    /**
+     * @return array
+     */
     public function getNodeInfoDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Config/Test/Unit/GenericSchemaLocatorTest.php b/lib/internal/Magento/Framework/Config/Test/Unit/GenericSchemaLocatorTest.php
index 77a7f869fb941..dfb0992307ac8 100644
--- a/lib/internal/Magento/Framework/Config/Test/Unit/GenericSchemaLocatorTest.php
+++ b/lib/internal/Magento/Framework/Config/Test/Unit/GenericSchemaLocatorTest.php
@@ -30,6 +30,13 @@ class GenericSchemaLocatorTest extends \PHPUnit\Framework\TestCase
      */
     private $moduleReaderMock;
 
+    /**
+     * @param ModuleDirReader $reader
+     * @param $moduleName
+     * @param $mergeSchema
+     * @param $perFileSchema
+     * @return GenericSchemaLocator
+     */
     private function createNewSchemaLocatorInstance(ModuleDirReader $reader, $moduleName, $mergeSchema, $perFileSchema)
     {
         return new GenericSchemaLocator($reader, $moduleName, $mergeSchema, $perFileSchema);
diff --git a/lib/internal/Magento/Framework/Controller/Test/Unit/Result/RedirectTest.php b/lib/internal/Magento/Framework/Controller/Test/Unit/Result/RedirectTest.php
index 65e7ee489e84c..881166b3e2218 100644
--- a/lib/internal/Magento/Framework/Controller/Test/Unit/Result/RedirectTest.php
+++ b/lib/internal/Magento/Framework/Controller/Test/Unit/Result/RedirectTest.php
@@ -75,6 +75,9 @@ public function testSetPath()
         );
     }
 
+    /**
+     * @return array
+     */
     public function httpRedirectResponseStatusCodes()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Convert/Test/Unit/XmlTest.php b/lib/internal/Magento/Framework/Convert/Test/Unit/XmlTest.php
index 5af254fcdd4dc..4102ece70a1ce 100644
--- a/lib/internal/Magento/Framework/Convert/Test/Unit/XmlTest.php
+++ b/lib/internal/Magento/Framework/Convert/Test/Unit/XmlTest.php
@@ -31,6 +31,9 @@ public function testXmlToAssoc()
         );
     }
 
+    /**
+     * @return string
+     */
     protected function getXml()
     {
         return <<<XML
diff --git a/lib/internal/Magento/Framework/DB/Test/Unit/Adapter/Pdo/MysqlTest.php b/lib/internal/Magento/Framework/DB/Test/Unit/Adapter/Pdo/MysqlTest.php
index 10a8fdb3a8361..0ca9f6846f77d 100644
--- a/lib/internal/Magento/Framework/DB/Test/Unit/Adapter/Pdo/MysqlTest.php
+++ b/lib/internal/Magento/Framework/DB/Test/Unit/Adapter/Pdo/MysqlTest.php
@@ -533,6 +533,9 @@ public function testGetIndexName($name, $fields, $indexType, $expectedName)
         );
     }
 
+    /**
+     * @return array
+     */
     public function getIndexNameDataProvider()
     {
         // 65 characters long - will be compressed
diff --git a/lib/internal/Magento/Framework/DB/Test/Unit/Ddl/SequenceTest.php b/lib/internal/Magento/Framework/DB/Test/Unit/Ddl/SequenceTest.php
index 6410d4258491d..5309a3fd2a426 100644
--- a/lib/internal/Magento/Framework/DB/Test/Unit/Ddl/SequenceTest.php
+++ b/lib/internal/Magento/Framework/DB/Test/Unit/Ddl/SequenceTest.php
@@ -38,6 +38,9 @@ public function testDropSequence()
         );
     }
 
+    /**
+     * @return array
+     */
     public function createSequenceDdlDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/DB/Test/Unit/ExpressionConverterTest.php b/lib/internal/Magento/Framework/DB/Test/Unit/ExpressionConverterTest.php
index 0915abd98d495..19d6ddfb8e527 100644
--- a/lib/internal/Magento/Framework/DB/Test/Unit/ExpressionConverterTest.php
+++ b/lib/internal/Magento/Framework/DB/Test/Unit/ExpressionConverterTest.php
@@ -22,6 +22,9 @@ public function testShortenEntityName($in, $prefix, $expectedOut)
         );
     }
 
+    /**
+     * @return array
+     */
     public function shortenEntityNameDataProvider()
     {
         $length64 = '________________________________________________________________';
diff --git a/lib/internal/Magento/Framework/DB/Test/Unit/Helper/Mysql/FulltextTest.php b/lib/internal/Magento/Framework/DB/Test/Unit/Helper/Mysql/FulltextTest.php
index 713f6471ded3c..05ec032e76113 100644
--- a/lib/internal/Magento/Framework/DB/Test/Unit/Helper/Mysql/FulltextTest.php
+++ b/lib/internal/Magento/Framework/DB/Test/Unit/Helper/Mysql/FulltextTest.php
@@ -64,6 +64,9 @@ public function testMatch($isCondition)
         $this->assertEquals($select, $result);
     }
 
+    /**
+     * @return array
+     */
     public function matchProvider()
     {
         return [[true], [false]];
diff --git a/lib/internal/Magento/Framework/DB/Test/Unit/Select/ColumnsRendererTest.php b/lib/internal/Magento/Framework/DB/Test/Unit/Select/ColumnsRendererTest.php
index fd8bacaf6a940..722f274d14215 100644
--- a/lib/internal/Magento/Framework/DB/Test/Unit/Select/ColumnsRendererTest.php
+++ b/lib/internal/Magento/Framework/DB/Test/Unit/Select/ColumnsRendererTest.php
@@ -82,6 +82,9 @@ public function testRender($columns, $sql, $expectedResult)
         $this->assertEquals($expectedResult, $this->model->render($this->selectMock, $sql));
     }
 
+    /**
+     * @return array
+     */
     public function renderDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/ArrayTypeTest.php b/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/ArrayTypeTest.php
index 20a0b384bad7e..9387ffbfed7a6 100644
--- a/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/ArrayTypeTest.php
+++ b/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/ArrayTypeTest.php
@@ -38,6 +38,9 @@ public function testEvaluateException($inputData)
         $this->_model->evaluate($inputData);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateExceptionDataProvider()
     {
         return [
@@ -62,6 +65,9 @@ public function testEvaluate(array $input, array $expected)
         $this->assertSame($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/CompositeTest.php b/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/CompositeTest.php
index bca8bb0d9347f..37d840b40ca47 100644
--- a/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/CompositeTest.php
+++ b/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/CompositeTest.php
@@ -60,6 +60,9 @@ public function testEvaluateWrongDiscriminator($input, $expectedExceptionMessage
         $this->_model->evaluate($input);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateWrongDiscriminatorDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/NumberTest.php b/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/NumberTest.php
index bec2a37545e65..8981f5adb2e1a 100644
--- a/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/NumberTest.php
+++ b/lib/internal/Magento/Framework/Data/Test/Unit/Argument/Interpreter/NumberTest.php
@@ -30,6 +30,9 @@ public function testEvaluateException($input)
         $this->_model->evaluate($input);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateExceptionDataProvider()
     {
         return ['no value' => [[]], 'non-numeric value' => [['value' => 'non-numeric']]];
@@ -47,6 +50,9 @@ public function testEvaluate($input, $expected)
         $this->assertSame($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Data/Test/Unit/Collection/DbTest.php b/lib/internal/Magento/Framework/Data/Test/Unit/Collection/DbTest.php
index 5eea3f8790711..63eccb098bf0d 100644
--- a/lib/internal/Magento/Framework/Data/Test/Unit/Collection/DbTest.php
+++ b/lib/internal/Magento/Framework/Data/Test/Unit/Collection/DbTest.php
@@ -296,6 +296,9 @@ public function testPrintLogQueryPrinting($printQuery, $printFlag, $query, $expe
         $this->collection->printLogQuery($printQuery, false, $query);
     }
 
+    /**
+     * @return array
+     */
     public function printLogQueryPrintingDataProvider()
     {
         return [
@@ -319,6 +322,9 @@ public function testPrintLogQueryLogging($logQuery, $logFlag, $expectedCalls)
         $this->collection->printLogQuery(false, $logQuery, 'some_query');
     }
 
+    /**
+     * @return array
+     */
     public function printLogQueryLoggingDataProvider()
     {
         return [
@@ -527,6 +533,9 @@ public function testDistinct($flag, $expectedFlag)
         $this->collection->distinct($flag);
     }
 
+    /**
+     * @return array
+     */
     public function distinctDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/DateTest.php b/lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/DateTest.php
index b28b1fa167b60..baeeb4ff6f5e3 100644
--- a/lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/DateTest.php
+++ b/lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/DateTest.php
@@ -80,6 +80,9 @@ public function testGetElementHtmlDateFormat($fieldName)
         $this->model->getElementHtml();
     }
 
+    /**
+     * @return array
+     */
     public function providerGetElementHtmlDateFormat()
     {
         return [
@@ -88,6 +91,10 @@ public function providerGetElementHtmlDateFormat()
         ];
     }
 
+    /**
+     * @param $exactly
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getFormMock($exactly)
     {
         $functions = ['getFieldNameSuffix', 'getHtmlIdPrefix', 'getHtmlIdSuffix'];
diff --git a/lib/internal/Magento/Framework/Data/Test/Unit/Form/FormKey/ValidatorTest.php b/lib/internal/Magento/Framework/Data/Test/Unit/Form/FormKey/ValidatorTest.php
index 9e23610b97668..8b9de2c63953f 100644
--- a/lib/internal/Magento/Framework/Data/Test/Unit/Form/FormKey/ValidatorTest.php
+++ b/lib/internal/Magento/Framework/Data/Test/Unit/Form/FormKey/ValidatorTest.php
@@ -50,6 +50,9 @@ public function testValidate($formKey, $expected)
         $this->assertEquals($expected, $this->_model->validate($this->_requestMock));
     }
 
+    /**
+     * @return array
+     */
     public function validateDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Encryption/Test/Unit/CryptTest.php b/lib/internal/Magento/Framework/Encryption/Test/Unit/CryptTest.php
index 562f01abeefd1..a37dc981518e5 100644
--- a/lib/internal/Magento/Framework/Encryption/Test/Unit/CryptTest.php
+++ b/lib/internal/Magento/Framework/Encryption/Test/Unit/CryptTest.php
@@ -26,6 +26,10 @@ protected function setUp()
         $this->_key = substr(__CLASS__, -32, 32);
     }
 
+    /**
+     * @param $length
+     * @return bool|string
+     */
     protected function _getRandomString($length)
     {
         $result = '';
@@ -44,18 +48,31 @@ protected function _requireCipherInfo()
         }
     }
 
+    /**
+     * @param $cipherName
+     * @param $modeName
+     * @return mixed
+     */
     protected function _getKeySize($cipherName, $modeName)
     {
         $this->_requireCipherInfo();
         return self::$_cipherInfo[$cipherName][$modeName]['key_size'];
     }
 
+    /**
+     * @param $cipherName
+     * @param $modeName
+     * @return mixed
+     */
     protected function _getInitVectorSize($cipherName, $modeName)
     {
         $this->_requireCipherInfo();
         return self::$_cipherInfo[$cipherName][$modeName]['iv_size'];
     }
 
+    /**
+     * @return array
+     */
     public function getCipherModeCombinations(): array
     {
         $result = [];
@@ -83,6 +100,9 @@ public function testConstructor($cipher, $mode)
         $this->assertEquals($initVector, $crypt->getInitVector());
     }
 
+    /**
+     * @return array
+     */
     public function getConstructorExceptionData()
     {
         $result = [];
@@ -120,6 +140,9 @@ public function testConstructorDefaults()
         $this->assertEquals($cryptExpected->getInitVector(), $cryptActual->getInitVector());
     }
 
+    /**
+     * @return mixed
+     */
     public function getCryptData()
     {
         $fixturesFilename = __DIR__ . '/Crypt/_files/_crypt_fixtures.php';
diff --git a/lib/internal/Magento/Framework/Encryption/Test/Unit/EncryptorTest.php b/lib/internal/Magento/Framework/Encryption/Test/Unit/EncryptorTest.php
index 52a7a98eac312..f4381a42775d7 100644
--- a/lib/internal/Magento/Framework/Encryption/Test/Unit/EncryptorTest.php
+++ b/lib/internal/Magento/Framework/Encryption/Test/Unit/EncryptorTest.php
@@ -86,6 +86,9 @@ public function testValidateHash($password, $hash, $expected)
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function validateHashDataProvider()
     {
         return [
@@ -112,6 +115,9 @@ public function testEncryptWithEmptyKey($key)
         $this->assertEquals($value, $model->encrypt($value));
     }
 
+    /**
+     * @return array
+     */
     public function encryptWithEmptyKeyDataProvider()
     {
         return [[null], [0], [''], ['0']];
@@ -134,6 +140,9 @@ public function testDecryptWithEmptyKey($key)
         $this->assertEquals('', $model->decrypt($value));
     }
 
+    /**
+     * @return array
+     */
     public function decryptWithEmptyKeyDataProvider()
     {
         return [[null], [0], [''], ['0']];
@@ -208,6 +217,9 @@ public function testValidateKey()
         $this->assertEquals($crypt->decrypt($expectedEncryptedData), $actual->decrypt($actualEncryptedData));
     }
 
+    /**
+     * @return array
+     */
     public function testUseSpecifiedHashingAlgoDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Encryption/Test/Unit/Helper/SecurityTest.php b/lib/internal/Magento/Framework/Encryption/Test/Unit/Helper/SecurityTest.php
index a0406cd0ec84b..fc241834c7ecf 100644
--- a/lib/internal/Magento/Framework/Encryption/Test/Unit/Helper/SecurityTest.php
+++ b/lib/internal/Magento/Framework/Encryption/Test/Unit/Helper/SecurityTest.php
@@ -31,6 +31,9 @@ public function testCompareStrings($expected, $actual, $result)
         $this->assertEquals($result, Security::compareStrings($expected, $actual));
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CollectionTest.php b/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CollectionTest.php
index 91c8afaef5d07..136dd8cc80eef 100644
--- a/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CollectionTest.php
+++ b/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CollectionTest.php
@@ -81,6 +81,9 @@ public function testGetObserverByName($name)
         $this->assertEquals($observer, $this->observerCollection->getObserverByName($name));
     }
 
+    /**
+     * @return array
+     */
     public function observerNameProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CronTest.php b/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CronTest.php
index 511d547ebed44..1380cc0decf39 100644
--- a/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CronTest.php
+++ b/lib/internal/Magento/Framework/Event/Test/Unit/Observer/CronTest.php
@@ -37,6 +37,9 @@ public function testGetNumeric($value, $expectedResult)
         $this->assertEquals($expectedResult, $this->cron->getNumeric($value));
     }
 
+    /**
+     * @return array
+     */
     public function numericValueProvider()
     {
         return [
@@ -78,6 +81,9 @@ public function testMatchCronExpression($expression, $number, $expectedResult)
         $this->assertEquals($expectedResult, $this->cron->matchCronExpression($expression, $number));
     }
 
+    /**
+     * @return array
+     */
     public function matchCronExpressionProvider()
     {
         return [
@@ -107,6 +113,9 @@ public function testIsValidFor($time, $expression, $expectedResult)
         $this->assertEquals($expectedResult, $this->cron->isValidFor($eventMock));
     }
 
+    /**
+     * @return array
+     */
     public function isValidForProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Event/Test/Unit/Observer/RegexTest.php b/lib/internal/Magento/Framework/Event/Test/Unit/Observer/RegexTest.php
index cfd3602fb030d..80d828930d118 100644
--- a/lib/internal/Magento/Framework/Event/Test/Unit/Observer/RegexTest.php
+++ b/lib/internal/Magento/Framework/Event/Test/Unit/Observer/RegexTest.php
@@ -44,6 +44,9 @@ public function testIsValidFor($pattern, $name, $expectedResult)
         $this->assertEquals($expectedResult, $this->regex->isValidFor($eventMock));
     }
 
+    /**
+     * @return array
+     */
     public function isValidForProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/FileTest.php b/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/FileTest.php
index 97a3b8f498491..5d1f9664bde61 100644
--- a/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/FileTest.php
+++ b/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/FileTest.php
@@ -31,6 +31,9 @@ public function testGetAbsolutePath($basePath, $path, $expected)
         $this->assertEquals($expected, $file->getAbsolutePath($basePath, $path));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestGetAbsolutePath()
     {
         return [
@@ -50,6 +53,9 @@ public function testGetRelativePath($basePath, $path, $expected)
         $this->assertEquals($expected, $file->getRelativePath($basePath, $path));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestGetRelativePath()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/HttpTest.php b/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/HttpTest.php
index f5ad5b22bdd58..8fc57f458334e 100644
--- a/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/HttpTest.php
+++ b/lib/internal/Magento/Framework/Filesystem/Test/Unit/Driver/HttpTest.php
@@ -41,6 +41,9 @@ public function testIsExists($status, $result)
         $this->assertEquals($result, (new Http())->isExists(''));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestIsExists()
     {
         return [['200 OK', true], ['404 Not Found', false]];
@@ -55,6 +58,9 @@ public function testStat($headers, $result)
         $this->assertEquals($result, (new Http())->stat(''));
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForTestStat()
     {
         $headers1 = [
diff --git a/lib/internal/Magento/Framework/Filesystem/Test/Unit/File/ExcludeFilterTest.php b/lib/internal/Magento/Framework/Filesystem/Test/Unit/File/ExcludeFilterTest.php
index 07524f9c3595f..8dcb4befa6cac 100644
--- a/lib/internal/Magento/Framework/Filesystem/Test/Unit/File/ExcludeFilterTest.php
+++ b/lib/internal/Magento/Framework/Filesystem/Test/Unit/File/ExcludeFilterTest.php
@@ -39,6 +39,9 @@ public function testExclusion()
         $this->assertTrue(!in_array(BP . '/var/session/', $result), 'Filtered path should not be in array');
     }
 
+    /**
+     * @return \Generator
+     */
     private function getFilesIterator()
     {
         $files = [
diff --git a/lib/internal/Magento/Framework/Filter/Test/Unit/Input/MaliciousCodeTest.php b/lib/internal/Magento/Framework/Filter/Test/Unit/Input/MaliciousCodeTest.php
index a8cf48eef433f..7c1ae92b10fc2 100644
--- a/lib/internal/Magento/Framework/Filter/Test/Unit/Input/MaliciousCodeTest.php
+++ b/lib/internal/Magento/Framework/Filter/Test/Unit/Input/MaliciousCodeTest.php
@@ -33,6 +33,9 @@ public function testFilter($input, $expectedOutput)
         );
     }
 
+    /**
+     * @return array
+     */
     public function filterDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/ParameterTest.php b/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/ParameterTest.php
index 126d3f9f2f691..fdce369ba2946 100644
--- a/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/ParameterTest.php
+++ b/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/ParameterTest.php
@@ -41,6 +41,9 @@ public function testGetValue($string, $expectedValue)
         $this->assertEquals($expectedValue, $this->_filter->getValue());
     }
 
+    /**
+     * @return array
+     */
     public function sampleTokenizeStringProvider()
     {
         return [
@@ -51,6 +54,9 @@ public function sampleTokenizeStringProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function sampleGetValueStringProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/VariableTest.php b/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/VariableTest.php
index 793637203bb0d..4dad75a6bcb5b 100644
--- a/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/VariableTest.php
+++ b/lib/internal/Magento/Framework/Filter/Test/Unit/Template/Tokenizer/VariableTest.php
@@ -30,6 +30,9 @@ public function testTokenize($string, $expectedValue)
         $this->assertEquals($expectedValue, $this->_filter->tokenize());
     }
 
+    /**
+     * @return array
+     */
     public function sampleTokenizeStringProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Filter/Test/Unit/TemplateTest.php b/lib/internal/Magento/Framework/Filter/Test/Unit/TemplateTest.php
index d962f2265a01e..4883dc5fbe33b 100644
--- a/lib/internal/Magento/Framework/Filter/Test/Unit/TemplateTest.php
+++ b/lib/internal/Magento/Framework/Filter/Test/Unit/TemplateTest.php
@@ -138,6 +138,9 @@ public function testVarDirective($construction, $variables, $expectedResult)
         $this->assertEquals($expectedResult, $this->templateFilter->filter($construction));
     }
 
+    /**
+     * @return array
+     */
     public function varDirectiveDataProvider()
     {
         /* @var $dataObjectVariable \Magento\Framework\DataObject|\PHPUnit_Framework_MockObject_MockObject */
diff --git a/lib/internal/Magento/Framework/HTTP/Test/Unit/Adapter/CurlTest.php b/lib/internal/Magento/Framework/HTTP/Test/Unit/Adapter/CurlTest.php
index 8fd28e8513d0b..852badb16d219 100644
--- a/lib/internal/Magento/Framework/HTTP/Test/Unit/Adapter/CurlTest.php
+++ b/lib/internal/Magento/Framework/HTTP/Test/Unit/Adapter/CurlTest.php
@@ -38,6 +38,9 @@ public function testRead($response)
         $this->assertEquals(file_get_contents(__DIR__ . '/_files/curl_response_expected.txt'), $this->model->read());
     }
 
+    /**
+     * @return array
+     */
     public function readDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/HTTP/Test/Unit/PhpEnvironment/RequestTest.php b/lib/internal/Magento/Framework/HTTP/Test/Unit/PhpEnvironment/RequestTest.php
index a746b61ad0038..6bd8a977f2a2c 100644
--- a/lib/internal/Magento/Framework/HTTP/Test/Unit/PhpEnvironment/RequestTest.php
+++ b/lib/internal/Magento/Framework/HTTP/Test/Unit/PhpEnvironment/RequestTest.php
@@ -50,6 +50,10 @@ public function tearDown()
         $_SERVER = $this->serverArray;
     }
 
+    /**
+     * @param null $uri
+     * @return Request
+     */
     private function getModel($uri = null)
     {
         return new Request($this->cookieReader, $this->converter, $uri);
diff --git a/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/AbstractTest.php b/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/AbstractTest.php
index d8e48f278f782..838d85c5fbf20 100644
--- a/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/AbstractTest.php
+++ b/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/AbstractTest.php
@@ -109,6 +109,9 @@ public function testPrepareDestination($destination, $newName, $expectedResult)
         $this->assertEquals($expectedResult, $result);
     }
 
+    /**
+     * @return array
+     */
     public function prepareDestinationDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/Gd2Test.php b/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/Gd2Test.php
index fe0847f7f69b4..41281c96e1bb4 100644
--- a/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/Gd2Test.php
+++ b/lib/internal/Magento/Framework/Image/Test/Unit/Adapter/Gd2Test.php
@@ -73,6 +73,9 @@ public function testOpen($fileData, $exception, $limit)
         $this->adapter->open('file');
     }
 
+    /**
+     * @return array
+     */
     public function filesProvider()
     {
         $smallFile = [
diff --git a/lib/internal/Magento/Framework/Indexer/Test/Unit/IndexStructureTest.php b/lib/internal/Magento/Framework/Indexer/Test/Unit/IndexStructureTest.php
index c68af718473a4..514bd673f8525 100644
--- a/lib/internal/Magento/Framework/Indexer/Test/Unit/IndexStructureTest.php
+++ b/lib/internal/Magento/Framework/Indexer/Test/Unit/IndexStructureTest.php
@@ -186,6 +186,12 @@ private function createDimensionMock($name, $value)
         return $dimension;
     }
 
+    /**
+     * @param $callNumber
+     * @param $tableName
+     * @param $isTableExist
+     * @return mixed
+     */
     private function mockDropTable($callNumber, $tableName, $isTableExist)
     {
         $this->connectionInterface->expects($this->at($callNumber++))
@@ -201,6 +207,11 @@ private function mockDropTable($callNumber, $tableName, $isTableExist)
         return $callNumber;
     }
 
+    /**
+     * @param $callNumber
+     * @param $tableName
+     * @return mixed
+     */
     private function mockFlatTable($callNumber, $tableName)
     {
         $table = $this->getMockBuilder(\Magento\Framework\DB\Ddl\Table::class)
@@ -223,6 +234,11 @@ private function mockFlatTable($callNumber, $tableName)
         return $callNumber;
     }
 
+    /**
+     * @param $callNumber
+     * @param $tableName
+     * @return mixed
+     */
     private function mockFulltextTable($callNumber, $tableName)
     {
         $table = $this->getMockBuilder(\Magento\Framework\DB\Ddl\Table::class)
diff --git a/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/Sample.php b/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/Sample.php
index a862228c07dfd..ea2ab9e55ac5e 100644
--- a/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/Sample.php
+++ b/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/Sample.php
@@ -15,6 +15,9 @@ public function getValue()
         return $this->attribute;
     }
 
+    /**
+     * @param $value
+     */
     public function setValue($value)
     {
         $this->attribute = $value;
@@ -24,17 +27,27 @@ public function & getReference()
     {
     }
 
+    /**
+     * @param mixed ...$variadicValue
+     */
     public function firstVariadicParameter(...$variadicValue)
     {
         $this->variadicAttribute = $variadicValue;
     }
 
+    /**
+     * @param $value
+     * @param mixed ...$variadicValue
+     */
     public function secondVariadicParameter($value, ...$variadicValue)
     {
         $this->attribute = $value;
         $this->variadicAttribute = $variadicValue;
     }
 
+    /**
+     * @param mixed ...$variadicValue
+     */
     public function byRefVariadic(& ...$variadicValue)
     {
         $this->variadicAttribute = $variadicValue;
diff --git a/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/TSample.php b/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/TSample.php
index b4cc37700f1d0..b51bc2026fc4d 100644
--- a/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/TSample.php
+++ b/lib/internal/Magento/Framework/Interception/Test/Unit/Code/Generator/_files/TSample.php
@@ -15,32 +15,51 @@ public function returnVoid() : void
         // Nothing to do here
     }
 
+    /**
+     * @return null|string
+     */
     public function getNullableValue() : ?string
     {
         return null;
     }
 
+    /**
+     * @return string
+     */
     public function getValue() : string
     {
         return $this->value;
     }
 
+    /**
+     * @param string $value
+     */
     public function setValue(string $value)
     {
         $this->value = $value;
     }
 
+    /**
+     * @param string ...$variadicValue
+     */
     public function typeHintedFirstVariadicParameter(string ...$variadicValue)
     {
         $this->variadicValue = $variadicValue;
     }
 
+    /**
+     * @param string $value
+     * @param string ...$variadicValue
+     */
     public function typeHintedSecondVariadicParameter(string $value, string ...$variadicValue)
     {
         $this->value = $value;
         $this->variadicValue = $variadicValue;
     }
 
+    /**
+     * @param string ...$variadicValue
+     */
     public function byRefTypeHintedVariadic(string & ...$variadicValue)
     {
         $this->variadicValue = $variadicValue;
diff --git a/lib/internal/Magento/Framework/Interception/Test/Unit/Config/ConfigTest.php b/lib/internal/Magento/Framework/Interception/Test/Unit/Config/ConfigTest.php
index 54dfa8a03b28c..fe8d29bd0d51d 100644
--- a/lib/internal/Magento/Framework/Interception/Test/Unit/Config/ConfigTest.php
+++ b/lib/internal/Magento/Framework/Interception/Test/Unit/Config/ConfigTest.php
@@ -209,6 +209,9 @@ public function testHasPluginsWhenDataIsCached($expectedResult, $type)
         $this->assertEquals($expectedResult, $model->hasPlugins($type));
     }
 
+    /**
+     * @return array
+     */
     public function hasPluginsDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Math/Test/Unit/RandomTest.php b/lib/internal/Magento/Framework/Math/Test/Unit/RandomTest.php
index cd7f52f95a850..1dcdb0e9ae65d 100644
--- a/lib/internal/Magento/Framework/Math/Test/Unit/RandomTest.php
+++ b/lib/internal/Magento/Framework/Math/Test/Unit/RandomTest.php
@@ -26,6 +26,9 @@ public function testGetRandomString($length, $chars = null)
         }
     }
 
+    /**
+     * @return array
+     */
     public function getRandomStringDataProvider()
     {
         return [
@@ -77,6 +80,9 @@ public function testGetRandomNumber($min, $max)
         $this->assertGreaterThanOrEqual($min, $number);
     }
 
+    /**
+     * @return array
+     */
     public function testGetRandomNumberProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Message/Test/Unit/ManagerTest.php b/lib/internal/Magento/Framework/Message/Test/Unit/ManagerTest.php
index f2b496b157c54..ea86985f057bf 100644
--- a/lib/internal/Magento/Framework/Message/Test/Unit/ManagerTest.php
+++ b/lib/internal/Magento/Framework/Message/Test/Unit/ManagerTest.php
@@ -308,6 +308,9 @@ public function testAddMessage($type, $methodName)
         $this->assertTrue($this->model->hasMessages());
     }
 
+    /**
+     * @return array
+     */
     public function addMessageDataProvider()
     {
         return [
@@ -338,6 +341,9 @@ public function testAddUniqueMessagesWhenMessagesImplementMessageInterface($mess
         $this->model->addUniqueMessages([$messages]);
     }
 
+    /**
+     * @return array
+     */
     public function addUniqueMessagesWhenMessagesImplementMessageInterfaceDataProvider()
     {
         return [
@@ -371,6 +377,9 @@ public function testAddUniqueMessages($messages)
         $this->model->addUniqueMessages($messages);
     }
 
+    /**
+     * @return array
+     */
     public function addUniqueMessagesDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/MessageQueue/Test/Unit/MessageValidatorTest.php b/lib/internal/Magento/Framework/MessageQueue/Test/Unit/MessageValidatorTest.php
index c1aea7fce6f6f..bb21337dffcf8 100644
--- a/lib/internal/Magento/Framework/MessageQueue/Test/Unit/MessageValidatorTest.php
+++ b/lib/internal/Magento/Framework/MessageQueue/Test/Unit/MessageValidatorTest.php
@@ -150,6 +150,9 @@ public function testInvalidMessageType($requestType, $message, $expectedResult =
         $this->model->validate('topic', $message);
     }
 
+    /**
+     * @return array
+     */
     public function getQueueConfigRequestType()
     {
         $customerMock = $this->getMockBuilder(\Magento\Customer\Api\Data\CustomerInterface::class)
diff --git a/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/AbstractDbTest.php b/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/AbstractDbTest.php
index 36061b83cb9e6..b69f50cf4f341 100644
--- a/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/AbstractDbTest.php
+++ b/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/AbstractDbTest.php
@@ -163,6 +163,9 @@ public function testGetMainTable($tableName, $expectedResult)
         $this->assertEquals($expectedResult, $this->_model->getMainTable());
     }
 
+    /**
+     * @return array
+     */
     public function getTableDataProvider()
     {
         return [
@@ -217,6 +220,9 @@ public function testGetChecksum($checksum, $expected)
         $this->assertEquals($expected, $this->_model->getChecksum($checksum));
     }
 
+    /**
+     * @return array
+     */
     public function getChecksumProvider()
     {
         return [
@@ -400,6 +406,9 @@ public function testGetDataChanged($getOriginData, $expected)
         $this->assertEquals($expected, $this->_model->hasDataChanged($abstractModelMock));
     }
 
+    /**
+     * @return array
+     */
     public function hasDataChangedDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/AbstractCollectionTest.php b/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/AbstractCollectionTest.php
index bfd9b5a63d21b..147cac47d3829 100644
--- a/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/AbstractCollectionTest.php
+++ b/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/AbstractCollectionTest.php
@@ -95,6 +95,9 @@ protected function tearDown()
         \Magento\Framework\App\ObjectManager::setInstance($objectManagerMock);
     }
 
+    /**
+     * @return object
+     */
     protected function getUut()
     {
         return $this->objectManagerHelper->getObject(
@@ -220,6 +223,9 @@ public function testGetSelect($idFieldNameRet, $getPartRet, $expected)
         $this->assertTrue($this->uut->getSelect() instanceof Select);
     }
 
+    /**
+     * @return array
+     */
     public function getSelectDataProvider()
     {
         $columnMock = $this->createPartialMock(\Zend_Db_Expr::class, ['__toString']);
@@ -246,6 +252,9 @@ public function testAddFieldToSelect($field, $alias, $expectedFieldsToSelect)
         $this->assertTrue($this->uut->wereFieldsToSelectChanged());
     }
 
+    /**
+     * @return array
+     */
     public function addFieldToSelectDataProvider()
     {
         return [
@@ -265,6 +274,9 @@ public function testAddExpressionFieldToSelect($alias, $expression, $fields, $ex
         $this->assertTrue($this->uut->addExpressionFieldToSelect($alias, $expression, $fields) instanceof Uut);
     }
 
+    /**
+     * @return array
+     */
     public function addExpressionFieldToSelectDataProvider()
     {
         return [
@@ -289,6 +301,9 @@ public function testRemoveFieldFromSelect(
         $this->assertEquals($expectedWereFieldsToSelectChanged, $this->uut->wereFieldsToSelectChanged());
     }
 
+    /**
+     * @return array
+     */
     public function removeFieldFromSelectDataProvider()
     {
         return [
@@ -376,6 +391,9 @@ public function testJoin($table, $cond, $cols, $expected)
         $this->assertEquals($expected, $this->uut->getJoinedTables());
     }
 
+    /**
+     * @return array
+     */
     public function joinDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/Uut.php b/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/Uut.php
index e55dbb3c9c3da..b224dccc83d03 100644
--- a/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/Uut.php
+++ b/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Db/Collection/Uut.php
@@ -13,26 +13,41 @@
  */
 class Uut extends AbstractCollection
 {
+    /**
+     * @return bool
+     */
     public function wereFieldsToSelectChanged()
     {
         return $this->_fieldsToSelectChanged;
     }
 
+    /**
+     * @return array|null
+     */
     public function getFieldsToSelect()
     {
         return $this->_fieldsToSelect;
     }
 
+    /**
+     * @param array $fields
+     */
     public function setFieldsToSelect(array $fields)
     {
         $this->_fieldsToSelect = $fields;
     }
 
+    /**
+     * @param $resource
+     */
     public function setResource($resource)
     {
         $this->_resource = $resource;
     }
 
+    /**
+     * @return array
+     */
     public function getJoinedTables()
     {
         return $this->_joinedTables;
diff --git a/lib/internal/Magento/Framework/Module/Test/Unit/Declaration/Converter/DomTest.php b/lib/internal/Magento/Framework/Module/Test/Unit/Declaration/Converter/DomTest.php
index bf878257c89de..b6be79464684f 100644
--- a/lib/internal/Magento/Framework/Module/Test/Unit/Declaration/Converter/DomTest.php
+++ b/lib/internal/Magento/Framework/Module/Test/Unit/Declaration/Converter/DomTest.php
@@ -42,6 +42,9 @@ public function testConvertWithInvalidDom($xmlString)
         }
     }
 
+    /**
+     * @return array
+     */
     public function convertWithInvalidDomDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Module/Test/Unit/Dir/ReverseResolverTest.php b/lib/internal/Magento/Framework/Module/Test/Unit/Dir/ReverseResolverTest.php
index f7a20252826ae..eb849fc457ddb 100644
--- a/lib/internal/Magento/Framework/Module/Test/Unit/Dir/ReverseResolverTest.php
+++ b/lib/internal/Magento/Framework/Module/Test/Unit/Dir/ReverseResolverTest.php
@@ -54,6 +54,9 @@ public function testGetModuleName($path, $expectedResult)
         $this->assertSame($expectedResult, $this->_model->getModuleName($path));
     }
 
+    /**
+     * @return array
+     */
     public function getModuleNameDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Module/Test/Unit/ManagerTest.php b/lib/internal/Magento/Framework/Module/Test/Unit/ManagerTest.php
index 44185b52b19a4..12ddfea8c83d1 100644
--- a/lib/internal/Magento/Framework/Module/Test/Unit/ManagerTest.php
+++ b/lib/internal/Magento/Framework/Module/Test/Unit/ManagerTest.php
@@ -83,6 +83,9 @@ public function testIsOutputEnabledGenericConfigPath($configValue, $expectedResu
         $this->assertEquals($expectedResult, $this->_model->isOutputEnabled('Module_One'));
     }
 
+    /**
+     * @return array
+     */
     public function isOutputEnabledGenericConfigPathDataProvider()
     {
         return ['output disabled' => [true, false], 'output enabled' => [false, true]];
@@ -103,6 +106,9 @@ public function testIsOutputEnabledCustomConfigPath($configValue, $expectedResul
         $this->assertEquals($expectedResult, $this->_model->isOutputEnabled('Module_Two'));
     }
 
+    /**
+     * @return array
+     */
     public function isOutputEnabledCustomConfigPathDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Mview/Test/Unit/View/ChangelogTest.php b/lib/internal/Magento/Framework/Mview/Test/Unit/View/ChangelogTest.php
index f0f42c5931ad3..b16b7c87e87ac 100644
--- a/lib/internal/Magento/Framework/Mview/Test/Unit/View/ChangelogTest.php
+++ b/lib/internal/Magento/Framework/Mview/Test/Unit/View/ChangelogTest.php
@@ -258,6 +258,10 @@ protected function mockGetTableName()
         $this->resourceMock->expects($this->once())->method('getTableName')->will($this->returnArgument(0));
     }
 
+    /**
+     * @param $changelogTableName
+     * @param $result
+     */
     protected function mockIsTableExists($changelogTableName, $result)
     {
         $this->connectionMock->expects(
diff --git a/lib/internal/Magento/Framework/Mview/Test/Unit/ViewTest.php b/lib/internal/Magento/Framework/Mview/Test/Unit/ViewTest.php
index 3fd8ea93c9bbe..3f806b319ef48 100644
--- a/lib/internal/Magento/Framework/Mview/Test/Unit/ViewTest.php
+++ b/lib/internal/Magento/Framework/Mview/Test/Unit/ViewTest.php
@@ -464,6 +464,9 @@ public function testResumeNotSuspended($status)
         $this->model->resume();
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderResumeNotSuspended()
     {
         return [
@@ -520,6 +523,9 @@ public function testIsEnabled($mode, $result)
         $this->assertEquals($result, $this->model->isEnabled());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderIsEnabled()
     {
         return [
@@ -541,6 +547,9 @@ public function testIsIdle($status, $result)
         $this->assertEquals($result, $this->model->isIdle());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderIsIdle()
     {
         return [
@@ -563,6 +572,9 @@ public function testIsWorking($status, $result)
         $this->assertEquals($result, $this->model->isWorking());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderIsWorking()
     {
         return [
@@ -585,6 +597,9 @@ public function testIsSuspended($status, $result)
         $this->assertEquals($result, $this->model->isSuspended());
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderIsSuspended()
     {
         return [
@@ -617,6 +632,9 @@ protected function loadView()
         $this->model->load($viewId);
     }
 
+    /**
+     * @return array
+     */
     protected function getViewData()
     {
         return [
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/RepositoryTest.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/RepositoryTest.php
index 1bba19cb16a5a..1ca755b1281ec 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/RepositoryTest.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/RepositoryTest.php
@@ -13,21 +13,33 @@
  */
 class RepositoryTest extends EntityChildTestAbstract
 {
+    /**
+     * @return string
+     */
     protected function getSourceClassName()
     {
         return '\\' . \Magento\Framework\ObjectManager\Code\Generator\Sample::class;
     }
 
+    /**
+     * @return string
+     */
     protected function getResultClassName()
     {
         return '\\' . \Magento\Framework\ObjectManager\Code\Generator\Sample\Repository::class;
     }
 
+    /**
+     * @return string
+     */
     protected function getGeneratorClassName()
     {
         return '\\' . \Magento\Framework\ObjectManager\Code\Generator\Repository::class;
     }
 
+    /**
+     * @return string
+     */
     protected function getOutputFileName()
     {
         return 'SampleConverter.php';
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/SampleRepositoryInterface.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/SampleRepositoryInterface.php
index 0bc899f580071..a91efe3ab8d45 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/SampleRepositoryInterface.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/SampleRepositoryInterface.php
@@ -7,11 +7,27 @@
 
 interface SampleRepositoryInterface
 {
+    /**
+     * @param SampleInterface $entity
+     * @return mixed
+     */
     public function save(\Magento\Framework\ObjectManager\Code\Generator\SampleInterface $entity);
 
+    /**
+     * @param $id
+     * @return mixed
+     */
     public function get($id);
 
+    /**
+     * @param $id
+     * @return mixed
+     */
     public function deleteById($id);
 
+    /**
+     * @param SampleInterface $entity
+     * @return mixed
+     */
     public function delete(\Magento\Framework\ObjectManager\Code\Generator\SampleInterface $entity);
 }
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/TSampleRepositoryInterface.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/TSampleRepositoryInterface.php
index 99ab4ecadcd41..226054a17ff1c 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/TSampleRepositoryInterface.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Code/Generator/_files/TSampleRepositoryInterface.php
@@ -7,10 +7,22 @@
 
 interface TSampleRepositoryInterface
 {
+    /**
+     * @param int $id
+     * @return TSampleInterface
+     */
     public function get(int $id) : \Magento\Framework\ObjectManager\Code\Generator\TSampleInterface;
 
+    /**
+     * @param TSampleInterface $entity
+     * @return bool
+     */
     public function delete(\Magento\Framework\ObjectManager\Code\Generator\TSampleInterface $entity) : bool;
 
+    /**
+     * @param TSampleInterface $entity
+     * @return TSampleInterface
+     */
     public function save(\Magento\Framework\ObjectManager\Code\Generator\TSampleInterface $entity)
         : \Magento\Framework\ObjectManager\Code\Generator\TSampleInterface;
 }
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Config/Reader/_files/ConfigDomMock.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Config/Reader/_files/ConfigDomMock.php
index 894befc31e53f..7dc748cc31f5b 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Config/Reader/_files/ConfigDomMock.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Config/Reader/_files/ConfigDomMock.php
@@ -33,6 +33,9 @@ public function validate($schemaFile, $errors)
         return true;
     }
 
+    /**
+     * @return string
+     */
     public function getDom()
     {
         return 'reader dom result';
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Relations/RuntimeTest.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Relations/RuntimeTest.php
index 1c88ab65021c4..0beeeb5e69738 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Relations/RuntimeTest.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/Relations/RuntimeTest.php
@@ -30,6 +30,9 @@ public function testGetParents($type, $parents)
         $this->assertEquals($parents, $this->model->getParents($type));
     }
 
+    /**
+     * @return array
+     */
     public function getParentsDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/AggregateParent.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/AggregateParent.php
index 3c494b6abbb94..826e94c6cb8df 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/AggregateParent.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/AggregateParent.php
@@ -17,6 +17,14 @@ class AggregateParent implements \Magento\Test\Di\Aggregate\AggregateInterface
 
     public $optionalScalar;
 
+    /**
+     * AggregateParent constructor.
+     * @param \Magento\Test\Di\DiInterface $interface
+     * @param \Magento\Test\Di\DiParent $parent
+     * @param \Magento\Test\Di\Child $child
+     * @param $scalar
+     * @param int $optionalScalar
+     */
     public function __construct(
         \Magento\Test\Di\DiInterface $interface,
         \Magento\Test\Di\DiParent $parent,
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/Child.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/Child.php
index b84375e3b5436..2d24e640e90fa 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/Child.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/Child.php
@@ -11,6 +11,16 @@ class Child extends \Magento\Test\Di\Aggregate\AggregateParent
 
     public $secondOptionalScalar;
 
+    /**
+     * Child constructor.
+     * @param \Magento\Test\Di\DiInterface $interface
+     * @param \Magento\Test\Di\DiParent $parent
+     * @param \Magento\Test\Di\Child $child
+     * @param $scalar
+     * @param $secondScalar
+     * @param int $optionalScalar
+     * @param string $secondOptionalScalar
+     */
     public function __construct(
         \Magento\Test\Di\DiInterface $interface,
         \Magento\Test\Di\DiParent $parent,
diff --git a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/WithOptional.php b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/WithOptional.php
index 1c5ac56e2735c..58ee7c819490d 100644
--- a/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/WithOptional.php
+++ b/lib/internal/Magento/Framework/ObjectManager/Test/Unit/_files/Aggregate/WithOptional.php
@@ -11,6 +11,11 @@ class WithOptional
 
     public $child;
 
+    /**
+     * WithOptional constructor.
+     * @param \Magento\Test\Di\DiParent|null $parent
+     * @param \Magento\Test\Di\Child|null $child
+     */
     public function __construct(\Magento\Test\Di\DiParent $parent = null, \Magento\Test\Di\Child $child = null)
     {
         $this->parent = $parent;
diff --git a/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/CollectionTest.php b/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/CollectionTest.php
index 9c23b38182f91..edcc4a7e56717 100644
--- a/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/CollectionTest.php
+++ b/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/CollectionTest.php
@@ -79,6 +79,9 @@ public function testGetItems($adjustments, $expectedResult)
         $this->assertEmpty(array_diff($expectedResult, array_keys($result)));
     }
 
+    /**
+     * @return array
+     */
     public function getItemsDataProvider()
     {
         return [
@@ -104,6 +107,9 @@ public function testGetItemByCode($adjustments, $code, $expectedResult)
         $this->assertEquals($expectedResult, $item->getAdjustmentCode());
     }
 
+    /**
+     * @return array
+     */
     public function getItemByCodeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/PoolTest.php b/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/PoolTest.php
index 6fca39b2082fb..adf9ffae16390 100644
--- a/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/PoolTest.php
+++ b/lib/internal/Magento/Framework/Pricing/Test/Unit/Adjustment/PoolTest.php
@@ -65,6 +65,9 @@ public function testGetAdjustmentByCode($code, $expectedResult)
         $this->assertEquals($expectedResult, $result);
     }
 
+    /**
+     * @return array
+     */
     public function getAdjustmentByCodeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Pricing/Test/Unit/Helper/DataTest.php b/lib/internal/Magento/Framework/Pricing/Test/Unit/Helper/DataTest.php
index 2abf26601fbea..42af3268e559b 100644
--- a/lib/internal/Magento/Framework/Pricing/Test/Unit/Helper/DataTest.php
+++ b/lib/internal/Magento/Framework/Pricing/Test/Unit/Helper/DataTest.php
@@ -50,6 +50,9 @@ public function testCurrency($amount, $format, $includeContainer, $result)
         $this->assertEquals($result, $helper->currency($amount, $format, $includeContainer));
     }
 
+    /**
+     * @return array
+     */
     public function currencyDataProvider()
     {
         return [
@@ -84,6 +87,9 @@ public function testCurrencyByStore($amount, $store, $format, $includeContainer,
         $this->assertEquals($result, $helper->currencyByStore($amount, $store, $format, $includeContainer));
     }
 
+    /**
+     * @return array
+     */
     public function currencyByStoreDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Pricing/Test/Unit/PriceInfo/FactoryTest.php b/lib/internal/Magento/Framework/Pricing/Test/Unit/PriceInfo/FactoryTest.php
index 5d1ab67e09587..ebe2fb453ca83 100644
--- a/lib/internal/Magento/Framework/Pricing/Test/Unit/PriceInfo/FactoryTest.php
+++ b/lib/internal/Magento/Framework/Pricing/Test/Unit/PriceInfo/FactoryTest.php
@@ -80,6 +80,9 @@ protected function setUp()
         $this->factory = new Factory($this->types, $this->objectManagerMock);
     }
 
+    /**
+     * @return array
+     */
     public function createPriceInfoDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/AmountTest.php b/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/AmountTest.php
index 009fb8236c4dc..dddcf0b47abf2 100644
--- a/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/AmountTest.php
+++ b/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/AmountTest.php
@@ -277,6 +277,12 @@ public function testAdjustmentsHtml()
         $this->assertEquals($adjustmentHtml1 . $adjustmentHtml2, $this->model->getAdjustmentsHtml());
     }
 
+    /**
+     * @param array $data
+     * @param string $html
+     * @param string $code
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function getAdjustmentRenderMock($data = [], $html = '', $code = 'adjustment_code')
     {
         $adjustmentRender = $this->getMockForAbstractClass(
diff --git a/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/PriceBoxTest.php b/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/PriceBoxTest.php
index 905569936d036..f4588f7d25672 100644
--- a/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/PriceBoxTest.php
+++ b/lib/internal/Magento/Framework/Pricing/Test/Unit/Render/PriceBoxTest.php
@@ -122,6 +122,9 @@ public function testToHtml($data, $priceCode, $cssClasses)
         $this->assertEquals($cssClasses, $priceBox->getData('css_classes'));
     }
 
+    /**
+     * @return array
+     */
     public function toHtmlDataProvider()
     {
         return [
@@ -225,6 +228,9 @@ public function testGetPriceId($prefix, $suffix, $defaultPrefix, $defaultSuffix)
         $this->assertEquals($expectedPriceId, $this->model->getPriceId($defaultPrefix, $defaultSuffix));
     }
 
+    /**
+     * @return array
+     */
     public function getPriceIdProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Reflection/Test/Unit/DataObjectProcessorTest.php b/lib/internal/Magento/Framework/Reflection/Test/Unit/DataObjectProcessorTest.php
index ed26efb5bff64..1977ed3f46456 100644
--- a/lib/internal/Magento/Framework/Reflection/Test/Unit/DataObjectProcessorTest.php
+++ b/lib/internal/Magento/Framework/Reflection/Test/Unit/DataObjectProcessorTest.php
@@ -86,6 +86,9 @@ public function testBuildOutputDataArray($extensionAttributes, $expectedOutputDa
         $this->assertEquals($expectedOutputDataArray, $outputData);
     }
 
+    /**
+     * @return array
+     */
     public function buildOutputDataArrayDataProvider()
     {
         $expectedOutputDataArray = [
diff --git a/lib/internal/Magento/Framework/Reflection/Test/Unit/ExtensionAttributesProcessorTest.php b/lib/internal/Magento/Framework/Reflection/Test/Unit/ExtensionAttributesProcessorTest.php
index 130c285bd3b08..6aebd99deabb0 100644
--- a/lib/internal/Magento/Framework/Reflection/Test/Unit/ExtensionAttributesProcessorTest.php
+++ b/lib/internal/Magento/Framework/Reflection/Test/Unit/ExtensionAttributesProcessorTest.php
@@ -154,6 +154,9 @@ public function testBuildOutputDataArrayWithPermission($isPermissionAllowed, $ex
         );
     }
 
+    /**
+     * @return array
+     */
     public function buildOutputDataArrayWithPermissionProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Reflection/Test/Unit/TestDataObject.php b/lib/internal/Magento/Framework/Reflection/Test/Unit/TestDataObject.php
index 4e40fe6860586..dede06153259a 100644
--- a/lib/internal/Magento/Framework/Reflection/Test/Unit/TestDataObject.php
+++ b/lib/internal/Magento/Framework/Reflection/Test/Unit/TestDataObject.php
@@ -9,31 +9,50 @@ class TestDataObject implements TestDataInterface
 {
     private $extensionAttributes;
 
+    /**
+     * TestDataObject constructor.
+     * @param null $extensionAttributes
+     */
     public function __construct($extensionAttributes = null)
     {
         $this->extensionAttributes = $extensionAttributes;
     }
 
+    /**
+     * @return string
+     */
     public function getId()
     {
         return '1';
     }
 
+    /**
+     * @return string
+     */
     public function getAddress()
     {
         return 'someAddress';
     }
 
+    /**
+     * @return string
+     */
     public function isDefaultShipping()
     {
         return 'true';
     }
 
+    /**
+     * @return string
+     */
     public function isRequiredBilling()
     {
         return 'false';
     }
 
+    /**
+     * @return \Magento\Framework\Api\ExtensionAttributesInterface|null
+     */
     public function getExtensionAttributes()
     {
         return $this->extensionAttributes;
diff --git a/lib/internal/Magento/Framework/Reflection/Test/Unit/TypeProcessorTest.php b/lib/internal/Magento/Framework/Reflection/Test/Unit/TypeProcessorTest.php
index 4a61d003e32a8..86a4693d9e5b6 100644
--- a/lib/internal/Magento/Framework/Reflection/Test/Unit/TypeProcessorTest.php
+++ b/lib/internal/Magento/Framework/Reflection/Test/Unit/TypeProcessorTest.php
@@ -220,6 +220,9 @@ public function testProcessSimpleTypeException($value, $type)
         $this->typeProcessor->processSimpleAndAnyType($value, $type);
     }
 
+    /**
+     * @return array
+     */
     public static function processSimpleTypeExceptionProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Search/Test/Unit/Request/MapperTest.php b/lib/internal/Magento/Framework/Search/Test/Unit/Request/MapperTest.php
index c5e18423eab07..2a3e46b8887a6 100644
--- a/lib/internal/Magento/Framework/Search/Test/Unit/Request/MapperTest.php
+++ b/lib/internal/Magento/Framework/Search/Test/Unit/Request/MapperTest.php
@@ -852,6 +852,9 @@ public function testGetFilterException()
         $this->assertEquals($this->queryBool, $mapper->getRootQuery());
     }
 
+    /**
+     * @return array
+     */
     public function getQueryMatchProvider()
     {
         return [
@@ -879,6 +882,9 @@ public function getQueryMatchProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function getQueryFilterQueryReferenceProvider()
     {
         return [
@@ -926,6 +932,9 @@ public function getQueryFilterQueryReferenceProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function getQueryBoolProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/Base64JsonTest.php b/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/Base64JsonTest.php
index 8cad058f88466..e93164537f927 100644
--- a/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/Base64JsonTest.php
+++ b/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/Base64JsonTest.php
@@ -30,6 +30,9 @@ public function testSerialize($value, $expected)
         $this->assertEquals($expected, $this->base64json->serialize($value));
     }
 
+    /**
+     * @return array
+     */
     public function serializeDataProvider()
     {
         $dataObject = new \Magento\Framework\DataObject(['something']);
@@ -55,6 +58,9 @@ public function testUnserialize($value, $expected)
         $this->assertEquals($expected, $this->base64json->unserialize($value));
     }
 
+    /**
+     * @return array
+     */
     public function unserializeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/JsonTest.php b/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/JsonTest.php
index d1fddbbdf2778..235567103edf7 100644
--- a/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/JsonTest.php
+++ b/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/JsonTest.php
@@ -34,6 +34,9 @@ public function testSerialize($value, $expected)
         );
     }
 
+    /**
+     * @return array
+     */
     public function serializeDataProvider()
     {
         $dataObject = new DataObject(['something']);
@@ -62,6 +65,9 @@ public function testUnserialize($value, $expected)
         );
     }
 
+    /**
+     * @return array
+     */
     public function unserializeDataProvider()
     {
         return [
@@ -95,6 +101,9 @@ public function testUnserializeException($value)
         $this->json->unserialize($value);
     }
 
+    /**
+     * @return array
+     */
     public function unserializeExceptionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/SerializeTest.php b/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/SerializeTest.php
index e74de735c1c1e..1f8e7cf9d0bc3 100644
--- a/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/SerializeTest.php
+++ b/lib/internal/Magento/Framework/Serialize/Test/Unit/Serializer/SerializeTest.php
@@ -33,6 +33,9 @@ public function testSerialize($value, $serializedValue)
         $this->assertEquals($serializedValue, $this->serialize->serialize($value));
     }
 
+    /**
+     * @return array
+     */
     public function serializeDataProvider()
     {
         return [
@@ -56,6 +59,9 @@ public function testUnserialize($serializedValue, $value)
         $this->assertEquals($value, $this->serialize->unserialize($serializedValue));
     }
 
+    /**
+     * @return array
+     */
     public function unserializeDataProvider()
     {
         return [
@@ -88,6 +94,9 @@ public function testUnserializeException($value)
         $this->serialize->unserialize($value);
     }
 
+    /**
+     * @return array
+     */
     public function unserializeExceptionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Session/Test/Unit/ConfigTest.php b/lib/internal/Magento/Framework/Session/Test/Unit/ConfigTest.php
index 19c21ff3529ce..7a3bb98838ff3 100644
--- a/lib/internal/Magento/Framework/Session/Test/Unit/ConfigTest.php
+++ b/lib/internal/Magento/Framework/Session/Test/Unit/ConfigTest.php
@@ -82,6 +82,9 @@ public function testSetOptions($option, $getter, $value)
         $this->assertSame($value, $this->config->{$getter}());
     }
 
+    /**
+     * @return array
+     */
     public function optionsProvider()
     {
         return [
@@ -341,6 +344,9 @@ public function testConstructor($isValidSame, $isValid, $expected)
         $this->assertEquals($expected, $this->config->getOptions());
     }
 
+    /**
+     * @return array
+     */
     public function constructorDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Session/Test/Unit/SaveHandler/Redis/LoggerTest.php b/lib/internal/Magento/Framework/Session/Test/Unit/SaveHandler/Redis/LoggerTest.php
index 18050da435c32..4594a471e008d 100644
--- a/lib/internal/Magento/Framework/Session/Test/Unit/SaveHandler/Redis/LoggerTest.php
+++ b/lib/internal/Magento/Framework/Session/Test/Unit/SaveHandler/Redis/LoggerTest.php
@@ -70,6 +70,9 @@ public function testLog($logLevel, $method)
         $this->logger->log($message, $logLevel);
     }
 
+    /**
+     * @return array
+     */
     public function logDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Columns/TimestampTest.php b/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Columns/TimestampTest.php
index 7d82fb889d308..b64d716368323 100644
--- a/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Columns/TimestampTest.php
+++ b/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Columns/TimestampTest.php
@@ -129,6 +129,9 @@ public function testToDefinition($default, $nullable, $onUpdate, $expectedStatem
         );
     }
 
+    /**
+     * @return array
+     */
     public function toDefinitionProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Constraints/InternalTest.php b/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Constraints/InternalTest.php
index 62c76715b510c..07717611095e1 100644
--- a/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Constraints/InternalTest.php
+++ b/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/Constraints/InternalTest.php
@@ -89,6 +89,9 @@ function ($name) {
         );
     }
 
+    /**
+     * @return array
+     */
     public function toDefinitionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/IndexTest.php b/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/IndexTest.php
index 51ee068ef3063..987b8cac42e19 100644
--- a/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/IndexTest.php
+++ b/lib/internal/Magento/Framework/Setup/Test/Unit/Declaration/Schema/Db/MySQL/Definition/IndexTest.php
@@ -82,6 +82,9 @@ function ($name) {
         );
     }
 
+    /**
+     * @return array
+     */
     public function toDefinitionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Setup/Test/Unit/Patch/PatchApplierTest.php b/lib/internal/Magento/Framework/Setup/Test/Unit/Patch/PatchApplierTest.php
index 66aff8e779027..f89bdc9e137dd 100644
--- a/lib/internal/Magento/Framework/Setup/Test/Unit/Patch/PatchApplierTest.php
+++ b/lib/internal/Magento/Framework/Setup/Test/Unit/Patch/PatchApplierTest.php
@@ -257,6 +257,9 @@ public function testApplyDataPatchForInstalledModule($moduleName, $dataPatches,
         $this->patchApllier->applyDataPatch($moduleName);
     }
 
+    /**
+     * @return array
+     */
     public function applyDataPatchDataInstalledModuleProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Shell/Test/Unit/CommandRendererTest.php b/lib/internal/Magento/Framework/Shell/Test/Unit/CommandRendererTest.php
index 213e2afa2c655..01964bdced655 100644
--- a/lib/internal/Magento/Framework/Shell/Test/Unit/CommandRendererTest.php
+++ b/lib/internal/Magento/Framework/Shell/Test/Unit/CommandRendererTest.php
@@ -24,6 +24,9 @@ public function testRender($expectedCommand, $actualCommand, $testArguments)
         );
     }
 
+    /**
+     * @return array
+     */
     public function commandsDataProvider()
     {
         $testArgument  = 'argument';
diff --git a/lib/internal/Magento/Framework/Simplexml/Test/Unit/ElementTest.php b/lib/internal/Magento/Framework/Simplexml/Test/Unit/ElementTest.php
index 2455b8f3cb500..ea2149e6f9e34 100644
--- a/lib/internal/Magento/Framework/Simplexml/Test/Unit/ElementTest.php
+++ b/lib/internal/Magento/Framework/Simplexml/Test/Unit/ElementTest.php
@@ -108,6 +108,9 @@ public function testSetAttribute($name, $value)
         $this->assertEquals($xml->getAttribute($name), $value);
     }
 
+    /**
+     * @return array
+     */
     public function setAttributeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Stdlib/Test/Unit/BooleanUtilsTest.php b/lib/internal/Magento/Framework/Stdlib/Test/Unit/BooleanUtilsTest.php
index 26dcbc81262a2..64eb1e9c4bf39 100644
--- a/lib/internal/Magento/Framework/Stdlib/Test/Unit/BooleanUtilsTest.php
+++ b/lib/internal/Magento/Framework/Stdlib/Test/Unit/BooleanUtilsTest.php
@@ -38,6 +38,9 @@ public function testToBoolean($input, $expected)
         $this->assertSame($expected, $actual);
     }
 
+    /**
+     * @return array
+     */
     public function toBooleanDataProvider()
     {
         return [
@@ -64,6 +67,9 @@ public function testToBooleanException($input)
         $this->object->toBoolean($input);
     }
 
+    /**
+     * @return array
+     */
     public function toBooleanExceptionDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/PhpCookieManagerTest.php b/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/PhpCookieManagerTest.php
index 1ea942f5e9013..5a29fad2b16ab 100644
--- a/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/PhpCookieManagerTest.php
+++ b/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/PhpCookieManagerTest.php
@@ -272,6 +272,9 @@ public function testSetSensitiveCookieNoMetadata($cookieName, $secure)
             $this->assertTrue(self::$isSetCookieInvoked);
         }
 
+        /**
+         * @return array
+         */
         public function isCurrentlySecureDataProvider()
         {
             return [
@@ -840,6 +843,11 @@ private static function assertCookieSize(
             self::assertEquals('', $path);
         }
 
+        /**
+         * @param $get
+         * @param $default
+         * @param $return
+         */
         protected function stubGetCookie($get, $default, $return)
         {
             $this->readerMock->expects($this->atLeastOnce())
diff --git a/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/SensitiveCookieMetadataTest.php b/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/SensitiveCookieMetadataTest.php
index 9015968cee85c..d409a89c2cc91 100644
--- a/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/SensitiveCookieMetadataTest.php
+++ b/lib/internal/Magento/Framework/Stdlib/Test/Unit/Cookie/SensitiveCookieMetadataTest.php
@@ -59,6 +59,9 @@ public function testConstructorAndGetHttpOnly($metadata, $httpOnly)
         $this->assertEquals('path', $object->getPath());
     }
 
+    /**
+     * @return array
+     */
     public function constructorAndGetHttpOnlyTestDataProvider()
     {
         return [
@@ -104,6 +107,9 @@ public function testGetSecure($isSecure, $metadata, $expected, $callNum = 1)
         $this->assertEquals($expected, $object->getSecure());
     }
 
+    /**
+     * @return array
+     */
     public function getSecureDataProvider()
     {
         return [
@@ -160,6 +166,9 @@ public function testToArray($isSecure, $metadata, $expected, $callNum = 1)
         $this->assertEquals($expected, $object->__toArray());
     }
 
+    /**
+     * @return array
+     */
     public function toArrayDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Test/Unit/ArchiveTest.php b/lib/internal/Magento/Framework/Test/Unit/ArchiveTest.php
index 68be50810d44f..d4a19428c61a0 100644
--- a/lib/internal/Magento/Framework/Test/Unit/ArchiveTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/ArchiveTest.php
@@ -64,6 +64,9 @@ public function testIsArchive($file, $isArchive)
         $this->assertEquals($isArchive, $this->archive->isArchive($file));
     }
 
+    /**
+     * @return array
+     */
     public function isArchiveProvider()
     {
         return [
@@ -98,6 +101,9 @@ public function testIsTar($file, $isArchive)
         $this->assertEquals($isArchive, $this->archive->isTar($file));
     }
 
+    /**
+     * @return array
+     */
     public function isTarProvider()
     {
         return [
@@ -143,6 +149,9 @@ public function testPackUnpackGzBz($destinationFile, $extensionRequired)
         $this->assertStringStartsWith($this->destinationDir, $this->unpacked);
     }
 
+    /**
+     * @return array
+     */
     public function destinationProvider()
     {
         return [
@@ -200,6 +209,9 @@ public function testExtract($destinationFile, $extensionRequired)
         $this->assertStringStartsWith($this->destinationDir, $this->unpacked);
     }
 
+    /**
+     * @return array
+     */
     public function tarProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php b/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php
index 023070d4d69d6..7d54337f377fa 100644
--- a/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php
@@ -45,6 +45,9 @@ public function testGetElementHtml($value)
         $this->assertContains($value, $html);
     }
 
+    /**
+     * @return array
+     */
     public function getElementHtmlDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Test/Unit/DataObjectTest.php b/lib/internal/Magento/Framework/Test/Unit/DataObjectTest.php
index a064535590f32..2c481e3606c85 100644
--- a/lib/internal/Magento/Framework/Test/Unit/DataObjectTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/DataObjectTest.php
@@ -384,6 +384,9 @@ public function testUnderscore($input, $expectedOutput)
         $this->assertEquals($expectedOutput, $output);
     }
 
+    /**
+     * @return array
+     */
     public function underscoreDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Test/Unit/EscaperTest.php b/lib/internal/Magento/Framework/Test/Unit/EscaperTest.php
index c728fdecfeaab..ec05478b90db9 100644
--- a/lib/internal/Magento/Framework/Test/Unit/EscaperTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/EscaperTest.php
@@ -103,6 +103,9 @@ public function testEscapeJs($data, $expected)
         $this->assertEquals($expected, $this->escaper->escapeJs($data));
     }
 
+    /**
+     * @return array
+     */
     public function escapeJsDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Test/Unit/FlagManagerTest.php b/lib/internal/Magento/Framework/Test/Unit/FlagManagerTest.php
index 955f16d4241c2..ea6ddf56414ff 100644
--- a/lib/internal/Magento/Framework/Test/Unit/FlagManagerTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/FlagManagerTest.php
@@ -112,6 +112,9 @@ public function testDeleteFlag($isFlagExist)
         );
     }
 
+    /**
+     * @param $flagCode
+     */
     private function setupFlagObject($flagCode)
     {
         $this->flagFactoryMock->expects($this->once())
diff --git a/lib/internal/Magento/Framework/Test/Unit/Message/PhraseFactoryTest.php b/lib/internal/Magento/Framework/Test/Unit/Message/PhraseFactoryTest.php
index d5243cacb1616..805bd8fe4510a 100644
--- a/lib/internal/Magento/Framework/Test/Unit/Message/PhraseFactoryTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/Message/PhraseFactoryTest.php
@@ -33,6 +33,9 @@ public function testCreate($mainMessage, $subMessages, $separator, $expectedResu
         $this->assertEquals($expectedResult, $result);
     }
 
+    /**
+     * @return array
+     */
     public function dataProvider()
     {
         $subMessage1 = new Error('go jogging');
diff --git a/lib/internal/Magento/Framework/Test/Unit/Module/Plugin/DbStatusValidatorTest.php b/lib/internal/Magento/Framework/Test/Unit/Module/Plugin/DbStatusValidatorTest.php
index 0ef37beb11aff..a52c49136d150 100644
--- a/lib/internal/Magento/Framework/Test/Unit/Module/Plugin/DbStatusValidatorTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/Module/Plugin/DbStatusValidatorTest.php
@@ -119,6 +119,9 @@ public function testBeforeDispatchOutOfDateWithErrors(array $errors, string $exp
         $this->plugin->beforeDispatch($this->frontControllerMock, $this->requestMock);
     }
 
+    /**
+     * @return array
+     */
     public static function beforeDispatchOutOfDateWithErrorsDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Test/Unit/ShellTest.php b/lib/internal/Magento/Framework/Test/Unit/ShellTest.php
index 913fd883eaad2..9f223f916b97a 100644
--- a/lib/internal/Magento/Framework/Test/Unit/ShellTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/ShellTest.php
@@ -83,6 +83,9 @@ public function testExecuteLog($command, $commandArgs, $expectedResult, $expecte
         );
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         // backtick symbol (`) has to be replaced with environment-dependent quote character
diff --git a/lib/internal/Magento/Framework/Test/Unit/UrlTest.php b/lib/internal/Magento/Framework/Test/Unit/UrlTest.php
index 5c5df5b462b70..3713978d0f74e 100644
--- a/lib/internal/Magento/Framework/Test/Unit/UrlTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/UrlTest.php
@@ -163,6 +163,9 @@ public function testGetCurrentUrl($httpHost, $url)
         $this->assertEquals($url, $model->getCurrentUrl());
     }
 
+    /**
+     * @return array
+     */
     public function getCurrentUrlProvider()
     {
         return [
@@ -337,6 +340,9 @@ public function testGetUrlRouteUseRewrite()
         $this->assertEquals('/catalog/product/view/', $model->getUrl('catalog', ['_use_rewrite' => 1]));
     }
 
+    /**
+     * @return array
+     */
     public function getUrlDataProvider()
     {
         return [
@@ -497,6 +503,9 @@ public function testGetRedirectUrlWithSessionId()
         $this->assertEquals('http://example.com/?foo=bar', $model->getRedirectUrl('http://example.com/'));
     }
 
+    /**
+     * @return array
+     */
     public function getRebuiltUrlDataProvider()
     {
         return [
@@ -558,6 +567,9 @@ public function testIsOwnOriginUrl($result, $referrer)
         $this->assertEquals($result, $model->isOwnOriginUrl());
     }
 
+    /**
+     * @return array
+     */
     public function isOwnOriginUrlDataProvider()
     {
         return [
@@ -607,6 +619,9 @@ public function testGetConfigData($urlType, $configPath, $isSecure, $isSecureCal
         $this->assertEquals('http://localhost/', $model->getConfigData($key));
     }
 
+    /**
+     * @return array
+     */
     public function getConfigDataDataProvider()
     {
         return [
@@ -712,6 +727,9 @@ public function testSessionUrlVarWithoutMatchedHostsAndBaseUrl()
         );
     }
 
+    /**
+     * @return array
+     */
     public function sessionUrlVarWithMatchedHostsAndBaseUrlDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Translate/Test/Unit/InlineTest.php b/lib/internal/Magento/Framework/Translate/Test/Unit/InlineTest.php
index 6e222ba90da8e..b1ef51f010c5b 100644
--- a/lib/internal/Magento/Framework/Translate/Test/Unit/InlineTest.php
+++ b/lib/internal/Magento/Framework/Translate/Test/Unit/InlineTest.php
@@ -74,6 +74,9 @@ public function testIsAllowed($isEnabled, $isActive, $isDevAllowed, $result)
         $this->assertEquals($result, $model->isAllowed());
     }
 
+    /**
+     * @return array
+     */
     public function isAllowedDataProvider()
     {
         return [
@@ -126,6 +129,9 @@ public function testProcessResponseBodyStripInline($body, $expected)
         $this->assertEquals($body, $expected);
     }
 
+    /**
+     * @return array
+     */
     public function processResponseBodyStripInlineDataProvider()
     {
         return [
@@ -192,6 +198,9 @@ public function testProcessResponseBody($scope, $body, $expected)
         $this->assertEquals($body, $expected);
     }
 
+    /**
+     * @return array
+     */
     public function processResponseBodyDataProvider()
     {
         return [
@@ -254,6 +263,9 @@ public function testProcessResponseBodyGetInlineScript($scope, $body, $expected)
         $this->assertEquals($body, $expected);
     }
 
+    /**
+     * @return array
+     */
     public function processResponseBodyGetInlineScriptDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Unserialize/Test/Unit/UnserializeTest.php b/lib/internal/Magento/Framework/Unserialize/Test/Unit/UnserializeTest.php
index 4888077104728..f053a9afff74d 100644
--- a/lib/internal/Magento/Framework/Unserialize/Test/Unit/UnserializeTest.php
+++ b/lib/internal/Magento/Framework/Unserialize/Test/Unit/UnserializeTest.php
@@ -55,6 +55,9 @@ public function testUnserializeObject($serialized)
         $this->assertFalse($this->unserialize->unserialize($serialized));
     }
 
+    /**
+     * @return array
+     */
     public function unserializeObjectDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Url/Test/Unit/Helper/DataTest.php b/lib/internal/Magento/Framework/Url/Test/Unit/Helper/DataTest.php
index 5bb4f54b84a5c..016208d0920aa 100644
--- a/lib/internal/Magento/Framework/Url/Test/Unit/Helper/DataTest.php
+++ b/lib/internal/Magento/Framework/Url/Test/Unit/Helper/DataTest.php
@@ -79,6 +79,9 @@ public function testGetEncodedUrl($url, $callNum)
         $this->assertEquals($encodedUrl, $helper->getEncodedUrl($url));
     }
 
+    /**
+     * @return array
+     */
     public function getEncodedUrlDataProvider()
     {
         return [
@@ -98,6 +101,9 @@ public function testAddRequestParam($param, $expected)
         $this->assertEquals($expected, $helper->addRequestParam('http://example.com', $param));
     }
 
+    /**
+     * @return array
+     */
     public function addRequestParamDataProvider()
     {
         return [
@@ -145,6 +151,9 @@ public function testRemoveRequestParam($paramKey, $expected)
         $this->assertEquals($expected, $helper->removeRequestParam($url, $paramKey));
     }
 
+    /**
+     * @return array
+     */
     public function removeRequestParamDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Url/Test/Unit/SecurityInfoTest.php b/lib/internal/Magento/Framework/Url/Test/Unit/SecurityInfoTest.php
index fbda5e36c9934..3fc332aa1af52 100644
--- a/lib/internal/Magento/Framework/Url/Test/Unit/SecurityInfoTest.php
+++ b/lib/internal/Magento/Framework/Url/Test/Unit/SecurityInfoTest.php
@@ -32,6 +32,9 @@ public function testIsSecureChecksIfUrlIsInSecureList($url, $expected)
         $this->assertEquals($expected, $this->_model->isSecure($url));
     }
 
+    /**
+     * @return array
+     */
     public function secureUrlDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Validator/Test/Unit/ObjectTest.php b/lib/internal/Magento/Framework/Validator/Test/Unit/ObjectTest.php
index a06297a382f57..0fd70b5bc5f1d 100644
--- a/lib/internal/Magento/Framework/Validator/Test/Unit/ObjectTest.php
+++ b/lib/internal/Magento/Framework/Validator/Test/Unit/ObjectTest.php
@@ -92,6 +92,9 @@ public function testIsValid(array $inputEntityData, array $expectedErrors)
         }
     }
 
+    /**
+     * @return array
+     */
     public function validateDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Asset/File/FallbackContextTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Asset/File/FallbackContextTest.php
index 68b5f4bf3a20d..2d6ea2efe4958 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Asset/File/FallbackContextTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Asset/File/FallbackContextTest.php
@@ -53,6 +53,9 @@ public function testGetConfigPath(
         $this->assertEquals($expectedResult, $this->fallbackContext->getConfigPath());
     }
 
+    /**
+     * @return array
+     */
     public function getConfigPathDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Asset/FileTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Asset/FileTest.php
index b2953bc24e131..64d0419e070d0 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Asset/FileTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Asset/FileTest.php
@@ -134,6 +134,9 @@ public function testGetContent($content)
         $this->assertEquals($content, $this->object->getContent()); // no in-memory caching for content
     }
 
+    /**
+     * @return array
+     */
     public function getContentDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Asset/MergeServiceTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Asset/MergeServiceTest.php
index c4b7cefcfa7c2..4c17a2c0b35f4 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Asset/MergeServiceTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Asset/MergeServiceTest.php
@@ -118,6 +118,9 @@ public function testGetMergedAssets(array $assets, $contentType, $appMode, $merg
         $this->assertSame($mergedAsset, $this->object->getMergedAssets($assets, $contentType));
     }
 
+    /**
+     * @return array
+     */
     public static function getMergedAssetsDataProvider()
     {
         $jsAssets = [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/ContextTest.php b/lib/internal/Magento/Framework/View/Test/Unit/ContextTest.php
index 923ec2ff322b5..7e672d58d18e0 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/ContextTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/ContextTest.php
@@ -234,6 +234,9 @@ public function testGetAcceptType($headerAccept, $acceptType)
         $this->assertEquals($acceptType, $this->context->getAcceptType());
     }
 
+    /**
+     * @return array
+     */
     public function getAcceptTypeDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/DataSourcePoolTest.php b/lib/internal/Magento/Framework/View/Test/Unit/DataSourcePoolTest.php
index 816087a906c2e..a1f20f2c79cc9 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/DataSourcePoolTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/DataSourcePoolTest.php
@@ -45,6 +45,10 @@ public function testAddWithException()
         $this->dataSourcePool->add('DataSourcePoolTestBlock', 'NotExistingBlockClass');
     }
 
+    /**
+     * @param $blockClass
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     protected function createBlock($blockClass)
     {
         $block = $this->createMock(\Magento\Framework\View\Element\BlockInterface::class);
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Element/Html/LinkTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Element/Html/LinkTest.php
index 692dcb54d1447..b911a38dbb488 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Element/Html/LinkTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Element/Html/LinkTest.php
@@ -35,6 +35,9 @@ public function testGetLinkAttributes($link, $expected)
         $this->assertEquals($expected, $link->getLinkAttributes());
     }
 
+    /**
+     * @return array
+     */
     public function getLinkAttributesDataProvider()
     {
         $objectManagerHelper = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Element/Js/CookieTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Element/Js/CookieTest.php
index 10e21763ba802..fefbdf0ed5111 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Element/Js/CookieTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Element/Js/CookieTest.php
@@ -83,6 +83,9 @@ public function testGetDomain($domain, $isIp, $expectedResult)
         $this->assertEquals($expectedResult, $result);
     }
 
+    /**
+     * @return array
+     */
     public static function domainDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/ItemTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/ItemTest.php
index b2b1db44d6a0b..6ac8355fe7371 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/ItemTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/ItemTest.php
@@ -51,6 +51,9 @@ public function testToHtml($liParams, $innerText, $expectedHtml)
         $this->assertEquals($expectedHtml, $this->item->toHtml());
     }
 
+    /**
+     * @return array
+     */
     public function toHtmlDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/LinkTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/LinkTest.php
index 785c41c1d6e2f..a16b1ca80c49e 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/LinkTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Element/Text/TextList/LinkTest.php
@@ -54,6 +54,9 @@ public function testToHtml($liParams, $aParams, $innerText, $afterText, $expecte
         $this->assertEquals($expectedHtml, $this->link->toHtml());
     }
 
+    /**
+     * @return array
+     */
     public function toHtmlDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/File/Collector/Decorator/ModuleDependencyTest.php b/lib/internal/Magento/Framework/View/Test/Unit/File/Collector/Decorator/ModuleDependencyTest.php
index d6918c142cee0..8960aa71d22bb 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/File/Collector/Decorator/ModuleDependencyTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/File/Collector/Decorator/ModuleDependencyTest.php
@@ -53,6 +53,9 @@ public function testGetFiles(array $fixtureFiles, array $expectedFiles, $message
         $this->assertSame($expectedFiles, $this->_model->getFiles($theme, '*.xml'), $message);
     }
 
+    /**
+     * @return array
+     */
     public function getFilesDataProvider()
     {
         $fileOne = new \Magento\Framework\View\File('b.xml', 'Fixture_ModuleB');
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/HelperMethodTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/HelperMethodTest.php
index 458b23a4b15eb..887f3f1f63a9f 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/HelperMethodTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/HelperMethodTest.php
@@ -53,6 +53,10 @@ public function testEvaluate()
         $this->assertSame($expected, $actual);
     }
 
+    /**
+     * @param $input
+     * @return string
+     */
     public function help($input)
     {
         $this->assertSame('some text (evaluated)', $input);
@@ -73,6 +77,9 @@ public function testEvaluateException($helperMethod, $expectedExceptionMessage)
         $this->_model->evaluate($input);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateExceptionDataProvider()
     {
         $nonExistingHelper = __CLASS__ . '::non_existing';
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/NamedParamsTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/NamedParamsTest.php
index 5ae0b0332f28a..c4fff297b4ec1 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/NamedParamsTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/NamedParamsTest.php
@@ -67,6 +67,9 @@ public function testEvaluateWrongParam($input, $expectedExceptionMessage)
         $this->_model->evaluate($input);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateWrongParamDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/OptionsTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/OptionsTest.php
index bf01355dcb491..d20af502084f5 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/OptionsTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Argument/Interpreter/OptionsTest.php
@@ -74,6 +74,9 @@ public function testEvaluateWrongModel($input, $expectedException, $expectedExce
         $this->_model->evaluate($input);
     }
 
+    /**
+     * @return array
+     */
     public function evaluateWrongModelDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Layout/BuilderFactoryTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Layout/BuilderFactoryTest.php
index 45754d0618d05..427e15d901d6d 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Layout/BuilderFactoryTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Layout/BuilderFactoryTest.php
@@ -65,6 +65,9 @@ public function testCreate($type, $arguments, $layoutBuilderClass)
         $this->buildFactory->create($type, $arguments);
     }
 
+    /**
+     * @return array
+     */
     public function createDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Layout/ElementTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Layout/ElementTest.php
index ab5c908cb16af..a663b65561345 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Layout/ElementTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Layout/ElementTest.php
@@ -20,6 +20,9 @@ public function testGetElementName($xml, $name)
         $this->assertEquals($name, $model->getElementName());
     }
 
+    /**
+     * @return array
+     */
     public function elementNameDataProvider()
     {
         return [
@@ -31,6 +34,9 @@ public function elementNameDataProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function cacheableDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Reader/UiComponentTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Reader/UiComponentTest.php
index 1568c381226e2..158718587ad60 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Layout/Reader/UiComponentTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Layout/Reader/UiComponentTest.php
@@ -158,6 +158,9 @@ public function testInterpret($element)
         $this->model->interpret($this->context, $element);
     }
 
+    /**
+     * @return array
+     */
     public function interpretDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/View/Test/Unit/Page/ConfigTest.php b/lib/internal/Magento/Framework/View/Test/Unit/Page/ConfigTest.php
index 0307821f92cce..44e6e878a18c1 100644
--- a/lib/internal/Magento/Framework/View/Test/Unit/Page/ConfigTest.php
+++ b/lib/internal/Magento/Framework/View/Test/Unit/Page/ConfigTest.php
@@ -288,6 +288,9 @@ public function testAddPageAsset($file, $properties, $name, $expectedName)
         );
     }
 
+    /**
+     * @return array
+     */
     public function pageAssetDataProvider()
     {
         return [
@@ -327,6 +330,9 @@ public function testAddRemotePageAsset($url, $contentType, $properties, $name, $
         );
     }
 
+    /**
+     * @return array
+     */
     public function remotePageAssetDataProvider()
     {
         return [
@@ -383,6 +389,9 @@ public function testElementAttribute($elementType, $attribute, $value)
         $this->assertEquals($value, $this->model->getElementAttribute($elementType, $attribute));
     }
 
+    /**
+     * @return array
+     */
     public function elementAttributeDataProvider()
     {
         return [
@@ -418,6 +427,9 @@ public function testElementAttributeException($elementType, $attribute, $value)
         $this->model->setElementAttribute($elementType, $attribute, $value);
     }
 
+    /**
+     * @return array
+     */
     public function elementAttributeExceptionDataProvider()
     {
         return [
@@ -453,6 +465,9 @@ public function testElementAttributes($elementType, $attributes)
         $this->assertEquals($attributes, $this->model->getElementAttributes($elementType));
     }
 
+    /**
+     * @return array
+     */
     public function elementAttributesDataProvider()
     {
         return [
@@ -477,6 +492,9 @@ public function testPageLayout($handle)
         $this->assertEquals($handle, $this->model->getPageLayout());
     }
 
+    /**
+     * @return array
+     */
     public function pageLayoutDataProvider()
     {
         return [
@@ -537,6 +555,9 @@ public function testGetIncludes($isAvailable, $result)
         $this->assertEquals($result, $model->getIncludes());
     }
 
+    /**
+     * @return array
+     */
     public function getIncludesDataProvider()
     {
         return [
diff --git a/lib/internal/Magento/Framework/Webapi/Test/Unit/RequestTest.php b/lib/internal/Magento/Framework/Webapi/Test/Unit/RequestTest.php
index d30df5d76b75b..1fc6e92f87aa8 100644
--- a/lib/internal/Magento/Framework/Webapi/Test/Unit/RequestTest.php
+++ b/lib/internal/Magento/Framework/Webapi/Test/Unit/RequestTest.php
@@ -38,6 +38,9 @@ public function testGetRequestedServicesSuccess($requestParamServices, $expected
         $this->assertEquals($expectedResult, $this->request->getRequestedServices());
     }
 
+    /**
+     * @return array
+     */
     public function providerTestGetRequestedServicesSuccess()
     {
         $testModuleA = 'testModule1AllSoapAndRestV1';
diff --git a/lib/internal/Magento/Framework/Webapi/Test/Unit/ServiceInputProcessorTest.php b/lib/internal/Magento/Framework/Webapi/Test/Unit/ServiceInputProcessorTest.php
index 3393b325a8f16..1297ffca19eaf 100644
--- a/lib/internal/Magento/Framework/Webapi/Test/Unit/ServiceInputProcessorTest.php
+++ b/lib/internal/Magento/Framework/Webapi/Test/Unit/ServiceInputProcessorTest.php
@@ -561,6 +561,9 @@ public function testCustomAttributesExceptions($inputData)
         );
     }
 
+    /**
+     * @return array
+     */
     public function invalidCustomAttributesDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Console/Command/DeployStaticContentCommandTest.php b/setup/src/Magento/Setup/Test/Unit/Console/Command/DeployStaticContentCommandTest.php
index a5dc0d24feb7c..c3f79d92ec560 100644
--- a/setup/src/Magento/Setup/Test/Unit/Console/Command/DeployStaticContentCommandTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Console/Command/DeployStaticContentCommandTest.php
@@ -111,6 +111,9 @@ public function testExecute($input)
         $tester->execute($input);
     }
 
+    /**
+     * @return array
+     */
     public function executeDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Console/Command/UninstallCommandTest.php b/setup/src/Magento/Setup/Test/Unit/Console/Command/UninstallCommandTest.php
index 8bcee84d049b3..1ef3830636657 100644
--- a/setup/src/Magento/Setup/Test/Unit/Console/Command/UninstallCommandTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Console/Command/UninstallCommandTest.php
@@ -51,6 +51,9 @@ public function testExecuteInteractionNo()
         $this->checkInteraction(false);
     }
 
+    /**
+     * @param $answer
+     */
     public function checkInteraction($answer)
     {
         $question = $this->createMock(\Symfony\Component\Console\Helper\QuestionHelper::class);
diff --git a/setup/src/Magento/Setup/Test/Unit/Console/Style/TestOutput.php b/setup/src/Magento/Setup/Test/Unit/Console/Style/TestOutput.php
index 1407e5ed183e4..183f659c42f23 100644
--- a/setup/src/Magento/Setup/Test/Unit/Console/Style/TestOutput.php
+++ b/setup/src/Magento/Setup/Test/Unit/Console/Style/TestOutput.php
@@ -20,6 +20,10 @@ public function clear()
         $this->output = '';
     }
 
+    /**
+     * @param string $message
+     * @param bool $newline
+     */
     protected function doWrite($message, $newline)
     {
         $this->output .= $message . ($newline ? "\n" : '');
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsList/SessionTest.php b/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsList/SessionTest.php
index 3b1d3e29e4e56..e4c7449f1f9b6 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsList/SessionTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsList/SessionTest.php
@@ -270,6 +270,9 @@ public function testValidationWithInvalidOptions($option, $invalidInput, $errorM
         $this->assertSame($errorMessage, $errors[0]);
     }
 
+    /**
+     * @return array
+     */
     public function redisOptionProvider()
     {
         return [
@@ -294,6 +297,9 @@ public function redisOptionProvider()
         ];
     }
 
+    /**
+     * @return array
+     */
     public function invalidOptionsProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsListTest.php b/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsListTest.php
index 1bb60517d5e67..f342a11493498 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsListTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/ConfigOptionsListTest.php
@@ -178,6 +178,9 @@ public function testValidateCacheHosts($hosts, $expectedError)
         }
     }
 
+    /**
+     * @return array
+     */
     public function validateCacheHostsDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobComponentUninstallTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobComponentUninstallTest.php
index b3e88272d13e8..59210df4f7bcf 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobComponentUninstallTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobComponentUninstallTest.php
@@ -264,6 +264,9 @@ public function testExecuteWrongFormat(array $params)
         $this->job->execute();
     }
 
+    /**
+     * @return array
+     */
     public function executeWrongFormatDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobFactoryTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobFactoryTest.php
index f96882c30136a..1f8a3fea16da2 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobFactoryTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Cron/JobFactoryTest.php
@@ -206,16 +206,25 @@ public function testMaintenanceModeDisable()
 // functions to override native php functions
 namespace Magento\Setup\Model\Cron;
 
+/**
+ * @return string
+ */
 function fopen()
 {
     return 'filestream';
 }
 
+/**
+ * @return bool
+ */
 function is_resource()
 {
     return true;
 }
 
+/**
+ * @return string
+ */
 function get_resource_type()
 {
     return 'stream';
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Cron/ReadinessCheckTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Cron/ReadinessCheckTest.php
index f8f1d8542c38c..4a4ff2cb81e8d 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Cron/ReadinessCheckTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Cron/ReadinessCheckTest.php
@@ -201,6 +201,9 @@ public function testRunReadinessCheckLastTimestamp()
 
 namespace Magento\Setup\Model\Cron;
 
+/**
+ * @return int
+ */
 function time()
 {
     return 100;
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/BrakeMixinTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/BrakeMixinTest.php
index e6c7b420b661d..dfa001f44bc66 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/BrakeMixinTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/BrakeMixinTest.php
@@ -25,6 +25,9 @@ public function testApply($subject, $expectedResult)
         $this->assertEquals($expectedResult, $this->mixin->apply($subject));
     }
 
+    /**
+     * @return array
+     */
     public function getTestData()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/HeaderMixinTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/HeaderMixinTest.php
index 48280e9c6f543..bf915fecf4701 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/HeaderMixinTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/HeaderMixinTest.php
@@ -25,6 +25,9 @@ public function testApply($subject, $expectedResult)
         $this->assertEquals($expectedResult, $this->mixin->apply($subject));
     }
 
+    /**
+     * @return array
+     */
     public function getTestData()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/RandomWordSelectorTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/RandomWordSelectorTest.php
index b21c687a30960..c24fa49fcac24 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/RandomWordSelectorTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/RandomWordSelectorTest.php
@@ -34,6 +34,9 @@ public function testRandomSelector($fixtureSource, $fixtureCount)
         }
     }
 
+    /**
+     * @return array
+     */
     public function getTestData()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/WordWrapperTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/WordWrapperTest.php
index 58e07df7391fc..7d3cbcdd00c71 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/WordWrapperTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/Helper/WordWrapperTest.php
@@ -30,6 +30,9 @@ public function testWrapping($inputData, $expectedResult)
         );
     }
 
+    /**
+     * @return array
+     */
     public function getTestData()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/ParagraphMixinTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/ParagraphMixinTest.php
index a522963d212ef..4fdb3090992bb 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/ParagraphMixinTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Description/Mixin/ParagraphMixinTest.php
@@ -25,6 +25,9 @@ public function testApply($subject, $expectedResult)
         $this->assertEquals($expectedResult, $this->mixin->apply($subject));
     }
 
+    /**
+     * @return array
+     */
     public function getTestData()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/Grid/TypeMapperTest.php b/setup/src/Magento/Setup/Test/Unit/Model/Grid/TypeMapperTest.php
index 90c26b5632d21..11dca34763a05 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/Grid/TypeMapperTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/Grid/TypeMapperTest.php
@@ -39,6 +39,9 @@ public function testMap($packageType, $expected)
         );
     }
 
+    /**
+     * @return array
+     */
     public function mapDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/ObjectManagerProviderTest.php b/setup/src/Magento/Setup/Test/Unit/Model/ObjectManagerProviderTest.php
index 9f59479ef0f0d..9d40b053e394e 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/ObjectManagerProviderTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/ObjectManagerProviderTest.php
@@ -83,6 +83,9 @@ public function testGet()
         $this->assertInstanceOf(ObjectManagerInterface::class, $this->model->get());
     }
 
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject
+     */
     private function getCommandListMock()
     {
         $commandMock = $this->getMockBuilder(Command::class)->disableOriginalConstructor()->getMock();
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/PayloadValidatorTest.php b/setup/src/Magento/Setup/Test/Unit/Model/PayloadValidatorTest.php
index 192717e1d319b..2d7685c2021cc 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/PayloadValidatorTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/PayloadValidatorTest.php
@@ -38,6 +38,9 @@ public function testValidatePayLoad($type, $has, $moduleExists)
         $this->assertEquals('', $this->model->validatePayload($type));
     }
 
+    /**
+     * @return array
+     */
     public function validatePayLoadDataProvider()
     {
         return [
@@ -61,6 +64,9 @@ public function testValidatePayLoadNegativeCases($type, $has, $moduleExists, $er
         $this->assertStringStartsWith($errorMessage, $this->model->validatePayload($type));
     }
 
+    /**
+     * @return array
+     */
     public function validatePayLoadNegativeCasesDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/PhpReadinessCheckTest.php b/setup/src/Magento/Setup/Test/Unit/Model/PhpReadinessCheckTest.php
index f543e77787f9d..2334cb19a5b4f 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/PhpReadinessCheckTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/PhpReadinessCheckTest.php
@@ -411,6 +411,10 @@ protected function isPhp7OrHhvm()
 
 namespace Magento\Setup\Model;
 
+/**
+ * @param $param
+ * @return int|string
+ */
 function ini_get($param)
 {
     if ($param === 'xdebug.max_nesting_level') {
diff --git a/setup/src/Magento/Setup/Test/Unit/Model/WebLoggerTest.php b/setup/src/Magento/Setup/Test/Unit/Model/WebLoggerTest.php
index b3ac6ad286e44..a55c50eeaa736 100644
--- a/setup/src/Magento/Setup/Test/Unit/Model/WebLoggerTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Model/WebLoggerTest.php
@@ -184,6 +184,9 @@ public function testClearNotExist()
         $this->webLogger->clear();
     }
 
+    /**
+     * @return string
+     */
     public static function readLog()
     {
         return self::$log;
@@ -202,6 +205,9 @@ public static function deleteLog()
         self::$log = '';
     }
 
+    /**
+     * @return bool
+     */
     public static function isExist()
     {
         return self::$log != '';
diff --git a/setup/src/Magento/Setup/Test/Unit/Module/Di/Code/Reader/ClassReaderDecoratorTest.php b/setup/src/Magento/Setup/Test/Unit/Module/Di/Code/Reader/ClassReaderDecoratorTest.php
index 7d8ce3ac564b3..ebb6560f9337d 100644
--- a/setup/src/Magento/Setup/Test/Unit/Module/Di/Code/Reader/ClassReaderDecoratorTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Module/Di/Code/Reader/ClassReaderDecoratorTest.php
@@ -46,6 +46,9 @@ public function testGetConstructor($expectation, $className, $willReturn)
         );
     }
 
+    /**
+     * @return array
+     */
     public function getConstructorDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Module/Di/_files/app/code/Magento/SomeModule/Helper/Test.php b/setup/src/Magento/Setup/Test/Unit/Module/Di/_files/app/code/Magento/SomeModule/Helper/Test.php
index 68d76980e1057..69f8fd224f7a8 100644
--- a/setup/src/Magento/Setup/Test/Unit/Module/Di/_files/app/code/Magento/SomeModule/Helper/Test.php
+++ b/setup/src/Magento/Setup/Test/Unit/Module/Di/_files/app/code/Magento/SomeModule/Helper/Test.php
@@ -25,6 +25,12 @@ class Test
      */
     protected $_newElementFactory;
 
+    /**
+     * Test constructor.
+     * @param \Magento\SomeModule\Module\Factory $factory
+     * @param \Magento\SomeModule\Element\Factory $elementFactory
+     * @param \Magento\SomeModule\ElementFactory $rightElementFactory
+     */
     public function __construct(
         \Magento\SomeModule\Module\Factory $factory,
         \Magento\SomeModule\Element\Factory $elementFactory,
diff --git a/setup/src/Magento/Setup/Test/Unit/Module/I18n/Parser/AbstractParserTest.php b/setup/src/Magento/Setup/Test/Unit/Module/I18n/Parser/AbstractParserTest.php
index 3c744bb44d32a..c698d4c344df8 100644
--- a/setup/src/Magento/Setup/Test/Unit/Module/I18n/Parser/AbstractParserTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Module/I18n/Parser/AbstractParserTest.php
@@ -39,6 +39,9 @@ public function testValidateOptions($options, $message)
         $this->_parserMock->parse($options);
     }
 
+    /**
+     * @return array
+     */
     public function dataProviderForValidateOptions()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Module/Setup/SetupCacheTest.php b/setup/src/Magento/Setup/Test/Unit/Module/Setup/SetupCacheTest.php
index 15a55bd23b164..573c8b132ca41 100644
--- a/setup/src/Magento/Setup/Test/Unit/Module/Setup/SetupCacheTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Module/Setup/SetupCacheTest.php
@@ -88,6 +88,9 @@ public function testHas($table, $parentId, $rowId, $field, $expected)
         $this->assertSame($expected, $this->object->has($table, $parentId, $rowId, $field));
     }
 
+    /**
+     * @return array
+     */
     public function hasDataProvider()
     {
         return [
diff --git a/setup/src/Magento/Setup/Test/Unit/Mvc/Bootstrap/InitParamListenerTest.php b/setup/src/Magento/Setup/Test/Unit/Mvc/Bootstrap/InitParamListenerTest.php
index a35007189a9ca..f0a9d5316b3a6 100644
--- a/setup/src/Magento/Setup/Test/Unit/Mvc/Bootstrap/InitParamListenerTest.php
+++ b/setup/src/Magento/Setup/Test/Unit/Mvc/Bootstrap/InitParamListenerTest.php
@@ -144,6 +144,9 @@ public function testCreateService($zfAppConfig, $env, $cliParam, $expectedArray)
         $this->assertEquals($expectedArray, $listener->createService($serviceLocator));
     }
 
+    /**
+     * @return array
+     */
     public function createServiceDataProvider()
     {
         return [