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dev/tests/api-functional/testsuite/Magento/GraphQl/PageCache/GraphQLPageCacheAbstract.php

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+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQl\PageCache;
+
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+
+/**
+ * Abstract class for GraphQL page cache test
+ */
+class GraphQLPageCacheAbstract extends GraphQlAbstract
+{
+    /**
+     * Assert that we obtain a cache MISS when sending the provided query & headers.
+     *
+     * @param string $query
+     * @param array $headers
+     * @return array
+     */
+    protected function assertCacheMissAndReturnResponse(string $query, array $headers) :array
+    {
+        $responseMiss = $this->graphQlQueryWithResponseHeaders($query, [], '', $headers);
+        $this->assertArrayHasKey('X-Magento-Cache-Debug', $responseMiss['headers']);
+        $this->assertEquals('MISS', $responseMiss['headers']['X-Magento-Cache-Debug']);
+        return $responseMiss;
+    }
+
+    /**
+     * Assert that we obtain a cache HIT when sending the provided query & headers.
+     *
+     * @param string $query
+     * @param array $headers
+     * @return array
+     */
+    protected function assertCacheHitAndReturnResponse(string $query, array $headers) :array
+    {
+        $responseHit = $this->graphQlQueryWithResponseHeaders($query, [], '', $headers);
+        $this->assertArrayHasKey('X-Magento-Cache-Debug', $responseHit['headers']);
+        $this->assertEquals('HIT', $responseHit['headers']['X-Magento-Cache-Debug']);
+        return $responseHit;
+    }
+}