def test_apply(self, apply_items, NodeLock, ApplyResult):
repo = Repository()
n = Node("node1", {})
repo.add_node(n)
result = MagicMock()
ApplyResult.return_value = result
NodeLock.__enter__ = lambda x: x
NodeLock.__exit__ = lambda x: x
self.assertEqual(n.apply(), result)
self.assertEqual(apply_items.call_count, 1)
ApplyResult.assert_called_once()
