MC-19746: The shipping address contains null values when there's no shipping address set on a cart

- fix test

Author: cpartica

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

@@ -108,18 +108,7 @@ public function testGetSelectedShippingMethodBeforeSet()
 
         $shippingAddress = current($response['cart']['shipping_addresses']);
         self::assertArrayHasKey('selected_shipping_method', $shippingAddress);
-
-        self::assertArrayHasKey('carrier_code', $shippingAddress['selected_shipping_method']);
-        self::assertNull($shippingAddress['selected_shipping_method']['carrier_code']);
-
-        self::assertArrayHasKey('method_code', $shippingAddress['selected_shipping_method']);
-        self::assertNull($shippingAddress['selected_shipping_method']['method_code']);
-
-        self::assertArrayHasKey('carrier_title', $shippingAddress['selected_shipping_method']);
-        self::assertNull($shippingAddress['selected_shipping_method']['carrier_title']);
-
-        self::assertArrayHasKey('method_title', $shippingAddress['selected_shipping_method']);
-        self::assertNull($shippingAddress['selected_shipping_method']['method_title']);
+        self::assertNull($shippingAddress['selected_shipping_method']);
     }
 
     /**
@@ -182,13 +171,7 @@ public function testGetGetSelectedShippingMethodIfShippingMethodIsNotSet()
 
         $shippingAddress = current($response['cart']['shipping_addresses']);
         self::assertArrayHasKey('selected_shipping_method', $shippingAddress);
-
-        self::assertNull($shippingAddress['selected_shipping_method']['carrier_code']);
-        self::assertNull($shippingAddress['selected_shipping_method']['method_code']);
-        self::assertNull($shippingAddress['selected_shipping_method']['carrier_title']);
-        self::assertNull($shippingAddress['selected_shipping_method']['method_title']);
-        self::assertNull($shippingAddress['selected_shipping_method']['amount']);
-        self::assertNull($shippingAddress['selected_shipping_method']['base_amount']);
+        self::assertNull('selected_shipping_method', $shippingAddress['selected_shipping_method']);
     }
 
     /**