diff --git a/.github/workflows/marketplace-upload.yml b/.github/workflows/marketplace-upload.yml
new file mode 100644
index 0000000..6fb0bc8
--- /dev/null
+++ b/.github/workflows/marketplace-upload.yml
@@ -0,0 +1,11 @@
+on:
+  push:
+    tags:
+      - 'v*'
+
+name: Upload to HumHub Marketplace
+
+jobs:
+  build:
+    uses: humhub/actions/.github/workflows/module-marketplace-upload.yml@main
+    secrets: inherit
diff --git a/.github/workflows/php-test-develop.yml b/.github/workflows/php-test-develop.yml
new file mode 100644
index 0000000..d01ae83
--- /dev/null
+++ b/.github/workflows/php-test-develop.yml
@@ -0,0 +1,12 @@
+name: PHP Codeception Tests - develop
+
+on:
+  push:
+  schedule:
+    - cron: "0 0 * * 0"
+
+jobs:
+  tests:
+    uses: humhub/actions/.github/workflows/module-tests-develop.yml@main
+    with:
+      module-id: text-editor
diff --git a/.github/workflows/php-test-master.yml b/.github/workflows/php-test-master.yml
new file mode 100644
index 0000000..9d9c783
--- /dev/null
+++ b/.github/workflows/php-test-master.yml
@@ -0,0 +1,10 @@
+name: PHP Codeception Tests - master
+
+on:
+  push:
+
+jobs:
+  tests:
+    uses: humhub/actions/.github/workflows/module-tests-master.yml@main
+    with:
+      module-id: text-editor
diff --git a/.github/workflows/php-test-next.yml b/.github/workflows/php-test-next.yml
new file mode 100644
index 0000000..1a28b89
--- /dev/null
+++ b/.github/workflows/php-test-next.yml
@@ -0,0 +1,12 @@
+name: PHP Codeception Tests - next
+
+on:
+  push:
+  schedule:
+    - cron: "0 0 * * 0"
+
+jobs:
+  tests:
+    uses: humhub/actions/.github/workflows/module-tests-next.yml@main
+    with:
+      module-id: text-editor
diff --git a/Module.php b/Module.php
index 67552f5..242939b 100644
--- a/Module.php
+++ b/Module.php
@@ -49,7 +49,7 @@ public function canEdit(File $file): bool
     public function canView(File $file): bool
     {
         return $this->isSupportedType($file) &&
-            $file->canView() &&
+            $file->canRead() &&
             is_readable($file->getStore()->get());
     }
 
diff --git a/tests/codeception.yml b/tests/codeception.yml
new file mode 100644
index 0000000..e0193ab
--- /dev/null
+++ b/tests/codeception.yml
@@ -0,0 +1,23 @@
+actor: Tester
+namespace: text_editor
+bootstrap: _bootstrap.php
+settings:
+    suite_class: \PHPUnit_Framework_TestSuite
+    colors: true
+    shuffle: false
+    memory_limit: 1024M
+    log: true
+    
+    # This value controls whether PHPUnit attempts to backup global variables
+    # See https://phpunit.de/manual/current/en/appendixes.annotations.html#appendixes.annotations.backupGlobals
+    backup_globals: true
+paths:
+    tests: codeception
+    log: codeception/_output
+    data: codeception/_data
+    helpers: codeception/_support
+    envs: ../../../humhub/tests/config/env
+config:
+    # the entry script URL (with host info) for functional and acceptance tests
+    # PLEASE ADJUST IT TO THE ACTUAL ENTRY SCRIPT URL
+    test_entry_url: http://localhost:8080/index-test.php
diff --git a/tests/codeception/_bootstrap.php b/tests/codeception/_bootstrap.php
new file mode 100644
index 0000000..9bbfcf9
--- /dev/null
+++ b/tests/codeception/_bootstrap.php
@@ -0,0 +1,35 @@
+<?php
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+/*
+ * This is the initial test bootstrap, which will load the default test bootstrap from the humhub core
+ */
+
+$testRoot = dirname(__DIR__);
+
+\Codeception\Configuration::append(['test_root' => $testRoot]);
+codecept_debug('Module root: ' . $testRoot);
+
+$humhubPath = getenv('HUMHUB_PATH');
+if ($humhubPath === false) {
+    // If no environment path was set, we assume residing in default the modules directory
+    $moduleConfig = require $testRoot . '/config/test.php';
+    if (isset($moduleConfig['humhub_root'])) {
+        $humhubPath = $moduleConfig['humhub_root'];
+    } else {
+        $humhubPath = dirname(__DIR__, 5);
+    }
+}
+
+\Codeception\Configuration::append(['humhub_root' => $humhubPath]);
+codecept_debug('HumHub Root: ' . $humhubPath);
+
+// Load test configuration (/config/test.php or /config/env/<environment>/test.php
+$globalConfig = require $humhubPath . '/protected/humhub/tests/codeception/_loadConfig.php';
+
+// Load default test bootstrap (initialize Yii...)
+require $globalConfig['humhub_root'] . '/protected/humhub/tests/codeception/_bootstrap.php';
diff --git a/tests/codeception/_output/.gitignore b/tests/codeception/_output/.gitignore
new file mode 100644
index 0000000..86d0cb2
--- /dev/null
+++ b/tests/codeception/_output/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
\ No newline at end of file
diff --git a/tests/codeception/_support/AcceptanceTester.php b/tests/codeception/_support/AcceptanceTester.php
new file mode 100644
index 0000000..0dc2f2e
--- /dev/null
+++ b/tests/codeception/_support/AcceptanceTester.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+namespace text_editor;
+
+/**
+ * Inherited Methods
+ * @method void wantToTest($text)
+ * @method void wantTo($text)
+ * @method void execute($callable)
+ * @method void expectTo($prediction)
+ * @method void expect($prediction)
+ * @method void amGoingTo($argumentation)
+ * @method void am($role)
+ * @method void lookForwardTo($achieveValue)
+ * @method void comment($description)
+ * @method void pause()
+ *
+ * @SuppressWarnings(PHPMD)
+*/
+class AcceptanceTester extends \AcceptanceTester
+{
+    use _generated\AcceptanceTesterActions;
+}
diff --git a/tests/codeception/_support/UnitTester.php b/tests/codeception/_support/UnitTester.php
new file mode 100644
index 0000000..718a15f
--- /dev/null
+++ b/tests/codeception/_support/UnitTester.php
@@ -0,0 +1,14 @@
+<?php
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+namespace text_editor;
+
+use tests\codeception\_support\HumHubDbTestCase;
+
+class UnitTester extends HumHubDbTestCase
+{
+}
diff --git a/tests/codeception/_support/_generated/.gitignore b/tests/codeception/_support/_generated/.gitignore
new file mode 100644
index 0000000..86d0cb2
--- /dev/null
+++ b/tests/codeception/_support/_generated/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
\ No newline at end of file
diff --git a/tests/codeception/acceptance.suite.yml b/tests/codeception/acceptance.suite.yml
new file mode 100644
index 0000000..132904e
--- /dev/null
+++ b/tests/codeception/acceptance.suite.yml
@@ -0,0 +1,25 @@
+# Codeception Test Suite Configuration
+
+# suite for acceptance tests.
+# perform tests in browser using the Selenium-like tools.
+# powered by Mink (http://mink.behat.org).
+# (tip: that's what your customer will see).
+# (tip: test your ajax and javascript by one of Mink drivers).
+
+# RUN `build` COMMAND AFTER ADDING/REMOVING MODULES.
+
+class_name: AcceptanceTester
+modules:
+  enabled:
+    - WebDriver
+    - tests\codeception\_support\WebHelper
+    - tests\codeception\_support\DynamicFixtureHelper
+  config:
+    WebDriver:
+      url: 'http://localhost:8080/'
+      browser: chrome
+      restart: true
+      port: 4444
+      capabilities:
+        chromeOptions:
+          args: ["--lang=en-US"]
\ No newline at end of file
diff --git a/tests/codeception/acceptance/TextEditorCest.php b/tests/codeception/acceptance/TextEditorCest.php
new file mode 100644
index 0000000..b340d52
--- /dev/null
+++ b/tests/codeception/acceptance/TextEditorCest.php
@@ -0,0 +1,62 @@
+<?php
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+namespace text_editor\acceptance;
+
+use text_editor\AcceptanceTester;
+
+class TextEditorCest
+{
+    public function testTextEditor(AcceptanceTester $I)
+    {
+        $I->amAdmin();
+
+        $I->amOnPage('/text-editor/config');
+        $I->waitForText('Text editor');
+        $I->click('#configform-allownewfiles');
+        $I->click('Save');
+        $I->seeSuccess();
+
+        $I->amOnSpace1();
+        $I->click('#contentForm_message');
+        $I->click('.contentForm_options .btn-group .dropdown-toggle');
+        $I->waitForText('Create file (Text, Log, XML)');
+        $I->click('Create file (Text, Log, XML)');
+        $I->waitForText('Create file');
+        $I->fillField('#createfile-filename', 'Test file name.tst');
+        $I->click('Save');
+
+        $I->waitForText('Edit file: Test file name.tst');
+        $I->executeJS('document.querySelectorAll("div.CodeMirror")[0].CodeMirror.setValue("Test\r\nLine 2")');
+        $I->click('Save');
+        $I->seeSuccess();
+        $I->fillField('#contentFormBody .humhub-ui-richtext[contenteditable]', 'Post with test text file.');
+        $I->click('Submit');
+
+        $I->waitForText('Post with test text file.', null, '.wall-entry');
+        $I->see('Test file name.tst - 12 B', '.wall-entry .file-preview-content');
+        $I->click('Test file name.tst');
+        $I->waitForText('Open file');
+        $I->click('View');
+        $I->waitForText('View file: Test file name.tst');
+        $I->see("Test\r\nLine 2");
+        $I->click('Close');
+
+        $I->click('Test file name.tst');
+        $I->waitForText('Open file');
+        $I->click('Edit with Text editor');
+        $I->waitForText('Edit file: Test file name.tst');
+        $I->executeJS('document.querySelectorAll("div.CodeMirror")[0].CodeMirror.setValue("1st Line\r\nSecond Line")');
+        $I->click('Save');
+        $I->seeSuccess();
+        $I->click('Test file name.tst');
+        $I->waitForText('Open file');
+        $I->click('View');
+        $I->waitForText('View file: Test file name.tst');
+        $I->see("1st Line\r\nSecond Line");
+    }
+}
diff --git a/tests/codeception/acceptance/_bootstrap.php b/tests/codeception/acceptance/_bootstrap.php
new file mode 100644
index 0000000..63fd3e0
--- /dev/null
+++ b/tests/codeception/acceptance/_bootstrap.php
@@ -0,0 +1,6 @@
+<?php
+/**
+ * Initialize the HumHub Application for functional testing. The default application configuration for this suite can be overwritten
+ * in @tests/config/functional.php
+ */
+require Yii::getAlias('@humhubTests/codeception/acceptance/_bootstrap.php');
diff --git a/tests/codeception/config/unit.php b/tests/codeception/config/unit.php
new file mode 100644
index 0000000..44c0233
--- /dev/null
+++ b/tests/codeception/config/unit.php
@@ -0,0 +1,3 @@
+<?php
+
+return \tests\codeception\_support\HumHubTestConfiguration::getSuiteConfig('unit');
\ No newline at end of file
diff --git a/tests/codeception/unit.suite.yml b/tests/codeception/unit.suite.yml
new file mode 100644
index 0000000..b51817c
--- /dev/null
+++ b/tests/codeception/unit.suite.yml
@@ -0,0 +1,14 @@
+# Codeception Test Suite Configuration
+
+# suite for unit (internal) tests.
+# RUN `build` COMMAND AFTER ADDING/REMOVING MODULES.
+
+class_name: UnitTester
+modules:
+    enabled:
+        - tests\codeception\_support\CodeHelper
+        - Yii2
+    config:
+      Yii2:
+        configFile: 'codeception/config/unit.php'
+        transaction: false
diff --git a/tests/codeception/unit/TextEditorTest.php b/tests/codeception/unit/TextEditorTest.php
new file mode 100644
index 0000000..816d790
--- /dev/null
+++ b/tests/codeception/unit/TextEditorTest.php
@@ -0,0 +1,45 @@
+<?php
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+namespace text_editor;
+
+use humhub\modules\text_editor\models\CreateFile;
+use humhub\modules\text_editor\models\forms\ConfigForm;
+use humhub\modules\text_editor\Module;
+use Yii;
+
+class TextEditorTest extends UnitTester
+{
+    public function testTextEditor()
+    {
+        /* @var Module $module */
+        $module = Yii::$app->getModule('text-editor');
+
+        $this->assertFalse($module->canCreate());
+
+        $config = new ConfigForm();
+        $config->allowNewFiles = true;
+        $config->save();
+
+        $this->assertTrue($module->canCreate());
+
+        $createFile = new CreateFile();
+        $createFile->fileName = 'test.any';
+        $testFile = $createFile->save();
+
+        $this->assertEquals('text/plain', $testFile->mime_type);
+        $this->assertTrue($module->isSupportedType($testFile));
+        $this->assertTrue($module->canView($testFile));
+        $this->assertTrue($module->canEdit($testFile));
+
+        $testFile->mime_type = 'image/jpeg';
+
+        $this->assertFalse($module->isSupportedType($testFile));
+        $this->assertFalse($module->canView($testFile));
+        $this->assertFalse($module->canEdit($testFile));
+    }
+}
diff --git a/tests/codeception/unit/_bootstrap.php b/tests/codeception/unit/_bootstrap.php
new file mode 100644
index 0000000..6c96bdd
--- /dev/null
+++ b/tests/codeception/unit/_bootstrap.php
@@ -0,0 +1,6 @@
+<?php
+/**
+ * Initialize the HumHub Application for functional testing. The default application configuration for this suite can be overwritten
+ * in @tests/config/functional.php
+ */
+require Yii::getAlias('@humhubTests/codeception/unit/_bootstrap.php');
diff --git a/tests/config/common.php b/tests/config/common.php
new file mode 100644
index 0000000..be18243
--- /dev/null
+++ b/tests/config/common.php
@@ -0,0 +1,5 @@
+<?php
+/**
+ * This config is shared by all suites (unit/functional/acceptance) and can be overwritten by a suite config (e.g. functional.php)
+ */
+return [];
diff --git a/tests/config/test.php b/tests/config/test.php
new file mode 100644
index 0000000..2720755
--- /dev/null
+++ b/tests/config/test.php
@@ -0,0 +1,11 @@
+<?php
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+return [
+    'modules' => ['text-editor'],
+    'fixtures' => ['default'],
+];
diff --git a/tests/config/unit.php b/tests/config/unit.php
new file mode 100644
index 0000000..ae7fa3f
--- /dev/null
+++ b/tests/config/unit.php
@@ -0,0 +1,5 @@
+<?php
+/**
+ * Here you can overwrite your functional humhub config. The default config resiedes in @humhubTests/codeception/config/config.php
+ */
+return [];