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dev/tests/api-functional/testsuite/Magento/GraphQl/TestModule/GraphQlQueryTest.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\TestModule;
+
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+
+/**
+ * Test for basic GraphQl features
+ */
+class GraphQlQueryTest extends GraphQlAbstract
+{
+    public function testQueryTestModuleReturnsResults()
+    {
+        $id = 1;
+
+        $query = <<<QUERY
+{
+    testItem(id: {$id})
+    {
+        item_id
+        name
+    }
+}
+QUERY;
+
+        $response = $this->graphQlQuery($query);
+        $this->assertArrayHasKey('testItem', $response);
+        $testItem = $response['testItem'];
+        $this->assertArrayHasKey('item_id', $testItem);
+        $this->assertArrayHasKey('name', $testItem);
+        $this->assertEquals(1, $testItem['item_id']);
+        $this->assertEquals('itemName', $testItem['name']);
+    }
+
+    public function testQueryTestModuleExtensionAttribute()
+    {
+        $id = 2;
+
+        $query = <<<QUERY
+{
+    testItem(id: {$id})
+    {
+        item_id
+        name
+        integer_list
+    }
+}
+QUERY;
+
+        $response = $this->graphQlQuery($query);
+        $this->assertArrayHasKey('testItem', $response);
+        $testItem = $response['testItem'];
+        $this->assertArrayHasKey('integer_list', $testItem);
+        $this->assertEquals([3, 4, 5], $testItem['integer_list']);
+    }
+
+    public function testQueryViaGetRequestReturnsResults()
+    {
+        $id = 1;
+
+        $query = <<<QUERY
+{
+    testItem(id: {$id})
+    {
+        item_id
+        name
+    }
+}
+QUERY;
+
+        $response = $this->graphQlQuery($query, [], '', []);
+
+        $this->assertArrayHasKey('testItem', $response);
+    }
+
+    public function testQueryViaGetRequestWithVariablesReturnsResults()
+    {
+        $id = 1;
+
+        $query = <<<QUERY
+query getTestItem(\$id: Int!)
+{
+    testItem(id: \$id)
+    {
+        item_id
+        name
+    }
+}
+QUERY;
+        $variables = [
+            "id" => $id
+        ];
+
+        $response = $this->graphQlQuery($query, $variables, '', []);
+
+        $this->assertArrayHasKey('testItem', $response);
+    }
+
+    public function testQueryTestUnionResults()
+    {
+        $query = <<<QUERY
+{
+    testUnion {
+      __typename
+      ... on TypeCustom1 {
+          custom_name1
+      }
+      ... on TypeCustom2 {
+          custom_name2
+      }
+    }
+}
+QUERY;
+
+        $response = $this->graphQlQuery($query);
+
+        $this->assertArrayHasKey('testUnion', $response);
+        $testUnion = $response['testUnion'];
+        $this->assertArrayHasKey('custom_name1', $testUnion);
+        $this->assertEquals('custom_name1_value', $testUnion['custom_name1']);
+        $this->assertArrayNotHasKey('custom_name2', $testUnion);
+    }
+}