ENGCOM-4802: [2.3] Database Media Storage - Design Config Save functions to be Database Media Storage aware #21675

 - Merge Pull Request #21675 from gwharton/magento2:2.3-develop-dbmediastorage4
 - Merged commits:
   1. 76e74ca
   2. f33b038
   3. a22a736

Author: magento-engcom-team

app/code/Magento/Theme/Model/Design/Backend/File.php

@@ -21,6 +21,7 @@
 use Magento\Framework\UrlInterface;
 use Magento\MediaStorage\Model\File\UploaderFactory;
 use Magento\Theme\Model\Design\Config\FileUploader\FileProcessor;
+use Magento\MediaStorage\Helper\File\Storage\Database;
 
 /**
  * File Backend
@@ -39,6 +40,11 @@ class File extends BackendFile
      */
     private $mime;
 
+    /**
+     * @var Database
+     */
+    private $databaseHelper;
+
     /**
      * @param Context $context
      * @param Registry $registry
@@ -51,6 +57,7 @@ class File extends BackendFile
      * @param AbstractResource|null $resource
      * @param AbstractDb|null $resourceCollection
      * @param array $data
+     * @param Database $databaseHelper
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
     public function __construct(
@@ -64,7 +71,8 @@ public function __construct(
         UrlInterface $urlBuilder,
         AbstractResource $resource = null,
         AbstractDb $resourceCollection = null,
-        array $data = []
+        array $data = [],
+        Database $databaseHelper = null
     ) {
         parent::__construct(
             $context,
@@ -79,6 +87,7 @@ public function __construct(
             $data
         );
         $this->urlBuilder = $urlBuilder;
+        $this->databaseHelper = $databaseHelper ?: ObjectManager::getInstance()->get(Database::class);
     }
 
     /**
@@ -258,6 +267,10 @@ private function updateMediaDirectory(string $filename, string $url)
                 $mediaPath,
                 $destinationMediaPath
             );
+            $this->databaseHelper->renameFile(
+                $mediaPath,
+                $destinationMediaPath
+            );
         }
         if ($result) {
             if ($mediaPath === $tmpMediaPath) {

app/code/Magento/Theme/Test/Unit/Model/Design/Backend/FileTest.php

@@ -28,6 +28,11 @@ class FileTest extends \PHPUnit\Framework\TestCase
      */
     private $mime;
 
+    /**
+     * @var \Magento\MediaStorage\Helper\File\Storage\Database|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $databaseHelper;
+
     public function setUp()
     {
         $context = $this->getMockObject(\Magento\Framework\Model\Context::class);
@@ -55,6 +60,17 @@ public function setUp()
             ->disableOriginalConstructor()
             ->getMock();
 
+        $this->databaseHelper = $this->getMockBuilder(\Magento\MediaStorage\Helper\File\Storage\Database::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $abstractResource = $this->getMockBuilder(\Magento\Framework\Model\ResourceModel\AbstractResource::class)
+            ->getMockForAbstractClass();
+
+        $abstractDb = $this->getMockBuilder(\Magento\Framework\Data\Collection\AbstractDb::class)
+            ->disableOriginalConstructor()
+            ->getMockForAbstractClass();
+
         $this->fileBackend = new File(
             $context,
             $registry,
@@ -63,7 +79,11 @@ public function setUp()
             $uploaderFactory,
             $requestData,
             $filesystem,
-            $this->urlBuilder
+            $this->urlBuilder,
+            $abstractResource,
+            $abstractDb,
+            [],
+            $this->databaseHelper
         );
 
         $objectManager = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
@@ -196,6 +216,11 @@ public function testBeforeSave($fileName)
             ]
         );
 
+        $this->databaseHelper->expects($this->once())
+            ->method('renameFile')
+            ->with($expectedTmpMediaPath, '/' . $expectedFileName)
+            ->willReturn(true);
+
         $this->mediaDirectory->expects($this->once())
             ->method('copyFile')
             ->with($expectedTmpMediaPath, '/' . $expectedFileName)