B2B-2677: [MediaGallery]Implement data caching for GraphQL results on resolver level

- Add testThatThereAreNoOrphanedCacheIdsInTagFileAfterInvalidation (should fail)

Author: danmooney2

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

@@ -341,6 +341,54 @@ public function testMediaGalleryResolverCacheKeyAndTags()
         $this->assertNotEquals($simpleProductCacheTags, $simpleProductWithMediaCacheTags);
     }
 
+    #[
+        DataFixture(ProductFixture::class, ['sku' => 'product1', 'media_gallery_entries' => [[]]], as: 'product'),
+    ]
+    public function testThatThereAreNoOrphanedCacheIdsInTagFileAfterInvalidation()
+    {
+        $product = $this->productRepository->get('product1');
+        $this->graphQlQuery($this->getProductWithMediaGalleryQuery($product));
+        $this->assertMediaGalleryResolverCacheRecordExists($product);
+
+        $cacheKey = $this->getCacheKeyForMediaGalleryResolver($product);
+
+        // update media gallery-related field and assert cache is invalidated
+        $this->actionMechanismProvider()['update media label'][0]($product);
+        $this->assertMediaGalleryResolverCacheRecordDoesNotExist($product);
+
+        // assert cache id is not in GRAPHQL_QUERY_RESOLVER_RESULT tag file
+        $cacheLowLevelFrontend = $this->graphQlResolverCache->getLowLevelFrontend();
+        $cacheIdPrefix = $cacheLowLevelFrontend->getOption('cache_id_prefix');
+        $cacheBackend = $cacheLowLevelFrontend->getBackend();
+
+        $this->assertNotContains(
+            $cacheIdPrefix . $cacheKey,
+            $cacheBackend->getIdsMatchingTags([
+                $cacheIdPrefix . 'GRAPHQL_QUERY_RESOLVER_RESULT'
+            ]),
+            'Cache id is still present in GRAPHQL_QUERY_RESOLVER_RESULT tag file after invalidation'
+        );
+
+        $this->assertNotContains(
+            $cacheIdPrefix . $cacheKey,
+            $cacheBackend->getIdsMatchingTags([
+                $cacheIdPrefix . 'GQL_MEDIA_GALLERY'
+            ]),
+            'Cache id is still present in GQL_MEDIA_GALLERY tag file after invalidation'
+        );
+
+        $this->assertNotContains(
+            $cacheIdPrefix . $cacheKey,
+            $cacheBackend->getIdsMatchingTags([
+                $cacheIdPrefix . 'GQL_MEDIA_GALLERY_' . $product->getId(),
+            ]),
+            sprintf(
+                'Cache id is still present in GQL_MEDIA_GALLERY_%s tag file after invalidation',
+                $product->getId()
+            )
+        );
+    }
+
     /**
      * @magentoApiDataFixture Magento/Catalog/_files/product_with_media_gallery.php
      * @return void