/**
  * Tests getLineItemsByType().
  */
 protected function testGetLineItemsByType()
 {
     $type = 'payment_basic';
     $line_item = $this->lineItemManager->createInstance($type);
     $this->assertEqual(spl_object_hash($this->payment->setLineItem($line_item)), spl_object_hash($this->payment));
     $line_items = $this->payment->getLineItemsByType($type);
     $this->assertEqual(spl_object_hash(reset($line_items)), spl_object_hash($line_item));
 }