def test_use_machine_as_model(self):
states = ['A', 'B', 'C', 'D']
m = Machine(states=states, initial='A')
m.add_transition('move', 'A', 'B')
m.add_transition('move_to_C', 'B', 'C')
m.move()
self.assertEquals(m.state, 'B')
