#1760: Media Gallery Page opened successfully if "Enhanced Media Gallery" disabled

app/code/Magento/Backend/Test/Mftf/ActionGroup/AssertAdminPageIs404ActionGroup.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
+    <actionGroup name="AssertAdminPageIs404ActionGroup">
+        <annotations>
+            <description>Validates that the '404 Error' message is present in the current Admin Page Header.</description>
+        </annotations>
+
+        <see userInput="404 Error" selector="{{AdminHeaderSection.pageHeading}}" stepKey="see404PageHeading"/>
+    </actionGroup>
+</actionGroups>

app/code/Magento/MediaGalleryUi/Controller/Adminhtml/Media/Index.php

@@ -12,6 +12,9 @@
 use Magento\Framework\App\Action\HttpGetActionInterface;
 use Magento\Framework\Controller\ResultFactory;
 use Magento\Framework\Controller\ResultInterface;
+use Magento\MediaContentApi\Model\Config;
+use Magento\Backend\App\Action\Context;
+use Magento\Backend\Model\View\Result\Forward;
 
 /**
  * Controller serving the media gallery content
@@ -20,13 +23,39 @@ class Index extends Action implements HttpGetActionInterface
 {
     public const ADMIN_RESOURCE = 'Magento_Cms::media_gallery';
 
+    /**
+     * @var Config
+     */
+    private $config;
+
+    /**
+     * Index constructor.
+     * @param Context $context
+     * @param Config $config
+     */
+    public function __construct(
+        Context $context,
+        Config $config
+    ) {
+        parent::__construct($context);
+        $this->config = $config;
+    }
+
     /**
      * Get the media gallery layout
      *
      * @return ResultInterface
      */
     public function execute(): ResultInterface
     {
+        if (!$this->config->isEnabled()) {
+            /** @var Forward $resultForward */
+            $resultForward = $this->resultFactory->create(ResultFactory::TYPE_FORWARD);
+            $resultForward->forward('noroute');
+
+            return $resultForward;
+        }
+
         /** @var Page $resultPage */
         $resultPage = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
         $resultPage->setActiveMenu('Magento_MediaGalleryUi::media_gallery')

app/code/Magento/MediaGalleryUi/Test/Mftf/Suite/MediaGalleryUiDisabledSuite.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<suites xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Suite/etc/suiteSchema.xsd">
+    <suite name="MediaGalleryUiDisabledSuite">
+        <include>
+            <group name="media_gallery_ui_disabled"/>
+        </include>
+    </suite>
+</suites>

app/code/Magento/MediaGalleryUi/Test/Mftf/Test/AdminStandaloneMediaGalleryDisabledTest.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
+    <test name="AdminStandaloneMediaGalleryDisabledTest">
+        <annotations>
+            <features value="MediaGallery"/>
+            <useCaseId value="https://github.com/magento/adobe-stock-integration/issues/1760"/>
+            <title value="Standalone Media Gallery Page should return 404 if Media Gallery is disabled"/>
+            <stories value="#1760 Media Gallery Page opened successfully if Enhanced Media Gallery disabled"/>
+            <testCaseId value="https://studio.cucumber.io/projects/131313/test-plan/folders/1337102/scenarios/5106786"/>
+            <description value="Standalone Media Gallery Page should return 404 if Media Gallery is disabled"/>
+            <severity value="CRITICAL"/>
+            <group value="media_gallery_ui_disabled"/>
+        </annotations>
+        <before>
+            <actionGroup ref="AdminLoginActionGroup" stepKey="loginAsAdmin"/>
+        </before>
+        <actionGroup ref="AdminOpenStandaloneMediaGalleryActionGroup" stepKey="openStandaloneMediaGallery"/>
+        <actionGroup ref="AssertAdminPageIs404ActionGroup" stepKey="see404Page"/>
+    </test>
+</tests>