ENGCOM-3480: [Forwardport] #18956 Fixes for set root_category_id #19237

 - Merge Pull Request #19237 from gelanivishal/magento2:2.2-develop-PR-port-18958
 - Merged commits:
   1. aa4abec
   2. acefdb3
   3. 5866a39
   4. fee2712
   5. 7be21e2

app/code/Magento/Store/Model/Config/Importer/Processor/Create.php

@@ -16,8 +16,6 @@
 
 /**
  * The processor for creating of new entities.
- *
- * {@inheritdoc}
  */
 class Create implements ProcessorInterface
 {
@@ -84,7 +82,9 @@ public function __construct(
     /**
      * Creates entities in application according to the data set.
      *
-     * {@inheritdoc}
+     * @param array $data The data to be processed
+     * @return void
+     * @throws RuntimeException If processor was unable to finish execution
      */
     public function run(array $data)
     {
@@ -176,8 +176,11 @@ private function createGroups(array $items, array $data)
             );
 
             $group = $this->groupFactory->create();
+            if (!isset($groupData['root_category_id'])) {
+                $groupData['root_category_id'] = 0;
+            }
+
             $group->setData($groupData);
-            $group->setRootCategoryId(0);
 
             $group->getResource()->save($group);
             $group->getResource()->addCommitCallback(function () use ($data, $group, $website) {
@@ -226,8 +229,7 @@ private function createStores(array $items, array $data)
     }
 
     /**
-     * Searches through given websites and compares with current websites.
-     * Returns found website.
+     * Searches through given websites and compares with current websites and returns found website.
      *
      * @param array $data The data to be searched in
      * @param string $websiteId The website id
@@ -249,8 +251,7 @@ private function detectWebsiteById(array $data, $websiteId)
     }
 
     /**
-     * Searches through given groups and compares with current websites.
-     * Returns found group.
+     * Searches through given groups and compares with current websites and returns found group.
      *
      * @param array $data The data to be searched in
      * @param string $groupId The group id
@@ -272,8 +273,7 @@ private function detectGroupById(array $data, $groupId)
     }
 
     /**
-     * Searches through given stores and compares with current stores.
-     * Returns found store.
+     * Searches through given stores and compares with current stores and returns found store.
      *
      * @param array $data The data to be searched in
      * @param string $storeId The store id

app/code/Magento/Store/Test/Unit/Model/Config/Importer/Processor/CreateTest.php

@@ -196,14 +196,30 @@ private function initTestData()
                 'root_category_id' => '1',
                 'default_store_id' => '1',
                 'code' => 'default',
+            ],
+            2 => [
+                'group_id' => '1',
+                'website_id' => '1',
+                'name' => 'Default1',
+                'default_store_id' => '1',
+                'code' => 'default1',
             ]
         ];
-        $this->trimmedGroup = [
-            'name' => 'Default',
-            'root_category_id' => '1',
-            'code' => 'default',
-            'default_store_id' => '1',
-        ];
+        $this->trimmedGroup =
+            [
+                0 => [
+                    'name' => 'Default',
+                    'root_category_id' => '1',
+                    'code' => 'default',
+                    'default_store_id' => '1',
+                ],
+                1 => [
+                    'name' => 'Default1',
+                    'root_category_id' => '0',
+                    'code' => 'default1',
+                    'default_store_id' => '1'
+                ]
+            ];
         $this->stores = [
             'default' => [
                 'store_id' => '1',
@@ -280,46 +296,46 @@ public function testRunGroup()
                 [ScopeInterface::SCOPE_GROUPS, $this->groups, $this->groups],
             ]);
 
-        $this->websiteMock->expects($this->once())
+        $this->websiteMock->expects($this->exactly(2))
             ->method('getResource')
             ->willReturn($this->abstractDbMock);
 
-        $this->groupMock->expects($this->once())
+        $this->groupMock->expects($this->exactly(2))
             ->method('setData')
-            ->with($this->trimmedGroup)
-            ->willReturnSelf();
-        $this->groupMock->expects($this->exactly(3))
+            ->withConsecutive(
+                [$this->equalTo($this->trimmedGroup[0])],
+                [$this->equalTo($this->trimmedGroup[1])]
+            )->willReturnSelf();
+
+        $this->groupMock->expects($this->exactly(6))
             ->method('getResource')
             ->willReturn($this->abstractDbMock);
-        $this->groupMock->expects($this->once())
-            ->method('setRootCategoryId')
-            ->with(0);
-        $this->groupMock->expects($this->once())
+        $this->groupMock->expects($this->exactly(2))
             ->method('getDefaultStoreId')
             ->willReturn($defaultStoreId);
-        $this->groupMock->expects($this->once())
+        $this->groupMock->expects($this->exactly(2))
             ->method('setDefaultStoreId')
             ->with($storeId);
-        $this->groupMock->expects($this->once())
+        $this->groupMock->expects($this->exactly(2))
             ->method('setWebsite')
             ->with($this->websiteMock);
 
-        $this->storeMock->expects($this->once())
+        $this->storeMock->expects($this->exactly(2))
             ->method('getResource')
             ->willReturn($this->abstractDbMock);
-        $this->storeMock->expects($this->once())
+        $this->storeMock->expects($this->exactly(2))
             ->method('getStoreId')
             ->willReturn($storeId);
 
         $this->abstractDbMock->expects($this->any())
             ->method('load')
             ->withConsecutive([$this->websiteMock, 'base', 'code'], [$this->storeMock, 'default', 'code'])
             ->willReturnSelf();
-        $this->abstractDbMock->expects($this->exactly(2))
+        $this->abstractDbMock->expects($this->exactly(4))
             ->method('save')
             ->with($this->groupMock)
             ->willReturnSelf();
-        $this->abstractDbMock->expects($this->once())
+        $this->abstractDbMock->expects($this->exactly(2))
             ->method('addCommitCallback')
             ->willReturnCallback(function ($function) {
                 return $function();