MC-18510: API functional test

- Added api functional test

Author: Prabhu Ram

dev/tests/api-functional/testsuite/Magento/GraphQl/Catalog/MediaGalleryTest.php

@@ -82,6 +82,78 @@ public function testMediaGalleryTypesAreCorrect()
         $this->assertEquals(['thumbnail', 'swatch_image'], $mediaGallery[1]['types']);
     }
 
+    /**
+     * @magentoApiDataFixture Magento/Catalog/_files/product_with_multiple_images.php
+     */
+    public function testMediaGallery()
+    {
+        $productSku = 'simple';
+        $query = <<<QUERY
+{
+  products(filter: {sku: {eq: "{$productSku}"}}) {
+    items {    
+      media_gallery {
+      	label
+        url
+      }
+    }
+  }    
+}
+QUERY;
+        $response = $this->graphQlQuery($query);
+        $this->assertNotEmpty($response['products']['items'][0]['media_gallery']);
+        $mediaGallery = $response['products']['items'][0]['media_gallery'];
+        $this->assertCount(2, $mediaGallery);
+        $this->assertEquals('Image Alt Text', $mediaGallery[0]['label']);
+        self::assertTrue($this->checkImageExists($mediaGallery[0]['url']));
+        $this->assertEquals('Thumbnail Image', $mediaGallery[1]['label']);
+        self::assertTrue($this->checkImageExists($mediaGallery[1]['url']));
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/Catalog/_files/product_simple_with_media_gallery_entries.php
+     */
+    public function testMediaGalleryForProductVideos()
+    {
+        $productSku = 'simple';
+        $query = <<<QUERY
+{
+  products(filter: {sku: {eq: "{$productSku}"}}) {
+    items {    
+      media_gallery {
+      	label
+        url
+        ... on ProductVideo {
+              video_content {
+                  media_type
+                  video_provider
+                  video_url
+                  video_title
+                  video_description
+                  video_metadata
+              }
+          }
+      }
+    }
+  }    
+}
+QUERY;
+        $response = $this->graphQlQuery($query);
+        $this->assertNotEmpty($response['products']['items'][0]['media_gallery']);
+        $mediaGallery = $response['products']['items'][0]['media_gallery'];
+        $this->assertCount(1, $mediaGallery);
+        $this->assertEquals('Video Label', $mediaGallery[0]['label']);
+        self::assertTrue($this->checkImageExists($mediaGallery[0]['url']));
+        $this->assertNotEmpty($mediaGallery[0]['video_content']);
+        $video_content = $mediaGallery[0]['video_content'];
+        $this->assertEquals('external-video', $video_content['media_type']);
+        $this->assertEquals('youtube', $video_content['video_provider']);
+        $this->assertEquals('http://www.youtube.com/v/tH_2PFNmWoga', $video_content['video_url']);
+        $this->assertEquals('Video title', $video_content['video_title']);
+        $this->assertEquals('Video description', $video_content['video_description']);
+        $this->assertEquals('Video Metadata', $video_content['video_metadata']);
+    }
+
     /**
      * @magentoApiDataFixture Magento/Catalog/_files/product_with_image.php
      */