MAGETWO-52746: Pull request preparation

Author: valdislav

dev/tests/integration/testsuite/Magento/Sales/_files/creditmemo_for_get.php

@@ -21,20 +21,17 @@
 $creditmemo->save();
 
 /** @var \Magento\Sales\Model\Order\Item $orderItem */
-$orderItem = $objectManager->get('Magento\Sales\Model\Order\Item');
-$orderItemId = 1;
+$orderItem = current($order->getAllItems());
 $orderItem->setName('Test item')
     ->setQtyRefunded(1)
     ->setQtyInvoiced(10)
-    ->setId($orderItemId)
     ->setOriginalPrice(20);
-$order->addItem($orderItem);
 
 /** @var \Magento\Sales\Model\Order\Creditmemo\Item $creditItem */
 $creditItem = $objectManager->get('Magento\Sales\Model\Order\Creditmemo\Item');
 $creditItem->setCreditmemo($creditmemo)
     ->setName('Creditmemo item')
-    ->setOrderItemId($orderItemId)
+    ->setOrderItemId($orderItem->getId())
     ->setQty(1)
     ->setPrice(20)
     ->save();