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dev/tests/api-functional/testsuite/Magento/GraphQl/VariablesSupportQueryTest.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;
+
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+use Magento\Catalog\Api\ProductRepositoryInterface;
+
+class VariablesSupportQueryTest extends GraphQlAbstract
+{
+    /**
+     * @var ProductRepositoryInterface
+     */
+    private $productRepository;
+
+    protected function setUp(): void
+    {
+        $this->productRepository = Bootstrap::getObjectManager()->get(ProductRepositoryInterface::class);
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/Catalog/_files/products_list.php
+     */
+    public function testQueryObjectVariablesSupport()
+    {
+        $productSku = 'simple-249';
+        $minPrice = 153;
+
+        $query
+            = <<<'QUERY'
+query GetProductsQuery($pageSize: Int, $filterInput: ProductAttributeFilterInput, $priceSort: SortEnum) {
+  products(
+    pageSize: $pageSize
+    filter: $filterInput
+    sort: {price: $priceSort}
+  ) {
+    items {
+      sku
+      price {
+        minimalPrice {
+          amount {
+            value
+            currency
+          }
+        }
+      }
+    }
+  }
+}
+QUERY;
+
+        $variables = [
+            'pageSize' => 1,
+            'priceSort' => 'ASC',
+            'filterInput' => [
+                'price' => [
+                    'from' => '150',
+                ],
+            ],
+        ];
+
+        $response = $this->graphQlQuery($query, $variables);
+        /** @var \Magento\Catalog\Model\Product $product */
+        $product = $this->productRepository->get($productSku, false, null, true);
+
+        self::assertArrayHasKey('products', $response);
+        self::assertArrayHasKey('items', $response['products']);
+        self::assertCount(1, $response['products']['items']);
+        self::assertArrayHasKey(0, $response['products']['items']);
+        self::assertEquals($product->getSku(), $response['products']['items'][0]['sku']);
+        self::assertEquals(
+            $minPrice,
+            $response['products']['items'][0]['price']['minimalPrice']['amount']['value']
+        );
+    }
+}