LYNX-232: Optimizations generateCustomerToken

- change integration GraphQlTest to be an api functional test

Author: eliseacornejo

dev/tests/api-functional/testsuite/Magento/GraphQl/GraphQlCache/GraphQlTest.php

@@ -0,0 +1,54 @@
+<?php
+/************************************************************************
+ *
+ * Copyright 2023 Adobe
+ * All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of Adobe and its suppliers, if any. The intellectual
+ * and technical concepts contained herein are proprietary to Adobe
+ * and its suppliers and are protected by all applicable intellectual
+ * property laws, including trade secret and copyright laws.
+ * Dissemination of this information or reproduction of this material
+ * is strictly forbidden unless prior written permission is obtained
+ * from Adobe.
+ * ************************************************************************
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQl\GraphQlCache;
+
+use Magento\Customer\Test\Fixture\Customer;
+use Magento\TestFramework\Fixture\DataFixture;
+use Magento\TestFramework\Fixture\DataFixtureStorageManager;
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+
+class GraphQlTest extends GraphQlAbstract
+{
+    #[
+        DataFixture(Customer::class, as: 'customer'),
+    ]
+    public function testMutation(): void
+    {
+        /** @var \Magento\Customer\Model\Customer $customer */
+        $customer = DataFixtureStorageManager::getStorage()->get('customer');
+        $generateToken = <<<MUTATION
+        mutation{
+            generateCustomerToken
+            (
+                email:"{$customer->getEmail()}",
+                password: "password"
+            )
+            {
+                token
+            }
+        }
+MUTATION;
+        $tokenResponse = $this->graphQlMutationWithResponseHeaders($generateToken);
+        $this->assertEquals('no-cache', $tokenResponse['headers']['Pragma']);
+        $this->assertEquals(
+            'max-age=0, must-revalidate, no-cache, no-store',
+            $tokenResponse['headers']['Cache-Control']
+        );
+    }
+}