MC-21480: Add caching for CategoryList resolver

- integration test

Author: danielrenaud

dev/tests/integration/testsuite/Magento/GraphQlCache/Controller/Catalog/CategoryListCacheTest.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQlCache\Controller\Catalog;
+
+use Magento\GraphQlCache\Controller\AbstractGraphqlCacheTest;
+
+/**
+ * Test caching works for categoryList query
+ *
+ * @magentoAppArea graphql
+ * @magentoCache full_page enabled
+ * @magentoDbIsolation disabled
+ */
+class CategoryListCacheTest extends AbstractGraphqlCacheTest
+{
+    /**
+     * Test cache tags are generated
+     *
+     * @magentoDataFixture Magento/Catalog/_files/category_product.php
+     */
+    public function testRequestCacheTagsForCategoryList(): void
+    {
+        $categoryId ='333';
+        $query
+            = <<<QUERY
+        {
+            categoryList(filters: {ids: {in: ["$categoryId"]}}) {
+                id
+                name
+                url_key
+                description
+                product_count
+           }
+       }
+QUERY;
+        $response = $this->dispatchGraphQlGETRequest(['query' => $query]);
+        $this->assertEquals('MISS', $response->getHeader('X-Magento-Cache-Debug')->getFieldValue());
+        $actualCacheTags = explode(',', $response->getHeader('X-Magento-Tags')->getFieldValue());
+        $expectedCacheTags = ['cat_c','cat_c_' . $categoryId, 'FPC'];
+        $this->assertEquals($expectedCacheTags, $actualCacheTags);
+    }
+
+    /**
+     * Test request is served from cache
+     *
+     * @magentoDataFixture Magento/Catalog/_files/category_product.php
+     */
+    public function testSecondRequestIsServedFromCache()
+    {
+        $categoryId ='333';
+        $query
+            = <<<QUERY
+        {
+            categoryList(filters: {ids: {in: ["$categoryId"]}}) {
+                id
+                name
+                url_key
+                description
+                product_count
+           }
+       }
+QUERY;
+        $expectedCacheTags = ['cat_c','cat_c_' . $categoryId, 'FPC'];
+
+        $response = $this->dispatchGraphQlGETRequest(['query' => $query]);
+        $this->assertEquals('MISS', $response->getHeader('X-Magento-Cache-Debug')->getFieldValue());
+        $actualCacheTags = explode(',', $response->getHeader('X-Magento-Tags')->getFieldValue());
+        $this->assertEquals($expectedCacheTags, $actualCacheTags);
+
+        $cacheResponse = $this->dispatchGraphQlGETRequest(['query' => $query]);
+        $this->assertEquals('HIT', $cacheResponse->getHeader('X-Magento-Cache-Debug')->getFieldValue());
+        $actualCacheTags = explode(',', $cacheResponse->getHeader('X-Magento-Tags')->getFieldValue());
+        $this->assertEquals($expectedCacheTags, $actualCacheTags);
+    }
+}