MAGETWO-60037: User is able to create empty URL key for category which leads to numerous errors

Author: le0n4eg

dev/tests/integration/testsuite/Magento/Catalog/Model/Indexer/Category/ProductTest.php

@@ -41,6 +41,7 @@ protected function setUp()
     }
 
     /**
+     * @magentoAppArea adminhtml
      * @magentoDataFixture Magento/Catalog/_files/indexer_catalog_category.php
      * @magentoDbIsolation enabled
      */
@@ -214,7 +215,7 @@ protected function getCategories($count)
             \Magento\Catalog\Model\Category::class
         );
 
-        $result = $category->getCollection()->getItems();
+        $result = $category->getCollection()->addAttributeToSelect('name')->getItems();
         $result = array_slice($result, 2);
 
         return array_slice($result, 0, $count);