class DummyClient(object):
    def __init__(self):
        self.d = Deferred()

    def resultRender(self, r):
        self.d.callback(r)


# Metod from test

    def test_client_ref(self):
        """
        Test that when Command is init'ed with a Client protocol instance ref
        it executes the ref's resultRender when Command.recv_result is executed
        """
        self.client_called = False

        def client_got_called(result):
            self.client_called = True

        client = DummyClient()
        client.d.addCallback(client_got_called)

        command = cmd.Command("test", content_type="plain",
                            client=client)
        command.recv_result("test")

        def cb(test):
            self.assertIsInstance(test, dict)
        command._d.addCallback(cb)
        command.success()