ENGCOM-8507: Added 'UnavailableQuantity' test case for updateCartItems mutation #31141

Author: sidolov

dev/tests/api-functional/testsuite/Magento/GraphQl/CatalogInventory/UpdateCartItemsTest.php

@@ -54,6 +54,24 @@ public function testUpdateCartItemDecimalQuantity()
         $this->graphQlMutation($query);
     }
 
+    /**
+     * @magentoApiDataFixture Magento/GraphQl/Catalog/_files/simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/guest/create_empty_cart.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/add_simple_product.php
+     */
+    public function testUpdateCartItemSetUnavailableQuantity()
+    {
+        $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute('test_quote');
+        $itemId = $this->getQuoteItemIdByReservedQuoteIdAndSku->execute('test_quote', 'simple_product');
+
+        $quantity = 100;
+        $this->expectExceptionMessage(
+            "Could not update the product with SKU simple_product: The requested qty is not available"
+        );
+        $query = $this->getQuery($maskedQuoteId, $itemId, $quantity);
+        $this->graphQlMutation($query);
+    }
+
     /**
      * @param string $maskedQuoteId
      * @param int $itemId