ENGCOM-4135: [256] Fixed variant collection #331

app/code/Magento/ConfigurableProductGraphQl/Model/Resolver/Variant/Attributes.php

@@ -9,6 +9,7 @@
 
 use Magento\Framework\GraphQl\Query\Resolver\ContextInterface;
 use Magento\Framework\GraphQl\Query\Resolver\Value;
+use Magento\Catalog\Model\Product;
 use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
 use Magento\Framework\GraphQl\Config\Element\Field;
 use Magento\Framework\GraphQl\Query\ResolverInterface;
@@ -45,12 +46,14 @@ public function resolve(
         $data = [];
         foreach ($value['options'] as $option) {
             $code = $option['attribute_code'];
-            if (!isset($value['product']['model'][$code])) {
+            /** @var Product|null $model */
+            $model = $value['product']['model'] ?? null;
+            if (!$model || !$model->getData($code)) {
                 continue;
             }
 
             foreach ($option['values'] as $optionValue) {
-                if ($optionValue['value_index'] != $value['product']['model'][$code]) {
+                if ($optionValue['value_index'] != $model->getData($code)) {
                     continue;
                 }
                 $data[] = [

dev/tests/api-functional/testsuite/Magento/GraphQl/ConfigurableProduct/ConfigurableProductViewTest.php

@@ -206,7 +206,6 @@ public function testQueryConfigurableProductLinks()
         /**
          * @var ProductRepositoryInterface $productRepository
          */
-
         $productRepository = ObjectManager::getInstance()->get(ProductRepositoryInterface::class);
         $product = $productRepository->get($productSku, false, null, true);