Set magentoApiDataFixture

Author: sedonik

dev/tests/api-functional/testsuite/Magento/GraphQl/Customer/CreateCustomerTest.php

@@ -276,7 +276,7 @@ public function testCreateCustomerIfNameEmpty()
     }
 
     /**
-     * @magentoConfigFixture default_store newsletter/general/active 0
+     * @magentoApiDataFixture Magento/Customer/_files/customer_subscribe.php
      */
     public function testCreateCustomerSubscribed()
     {

dev/tests/integration/testsuite/Magento/Customer/_files/customer_subscribe.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+$resourceConfig = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()
+    ->create(\Magento\Config\Model\ResourceModel\Config::class);
+$resourceConfig->saveConfig(
+    'newsletter/general/active',
+    false,
+    'default',
+    0
+);

dev/tests/integration/testsuite/Magento/Customer/_files/customer_subscribe_rollback.php

@@ -0,0 +1,13 @@
+<?php
+/**
+* Copyright © Magento, Inc. All rights reserved.
+* See COPYING.txt for license details.
+*/
+// TODO: Should be removed in scope of https://github.com/magento/graphql-ce/issues/167
+
+use Magento\Framework\App\Config\Storage\WriterInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+$objectManager = Bootstrap::getObjectManager();
+/** @var Writer  $configWriter */
+$configWriter = $objectManager->create(WriterInterface::class);
+$configWriter->delete('newsletter/general/active');