def test_a_listener_is_passed_right_parameters(self):
""""""
listener = Mock()
event = Event()
event.connect(listener)
event.fire(5, shape="square")
listener.assert_called_with(5, shape="square")
def test_a_listener_is_notified_when_an_event_is_raised(self):
""""""
listener = Mock()
event = Event()
event.connect(listener)
event.fire()
self.assertTrue(listener.called)
