def test_check_init_is_none(self):
smc = StateMachine()
smc.add_transition(0, 1, 'a')
with self.assertRaises(BaseException):
smc._check_smc()
def test_check_tran_is_empty(self):
smc = StateMachine()
smc.add_init_state(0)
smc.add_finish_state(1)
with self.assertRaises(BaseException):
smc._check_smc()
def test_check_states_is_empty(self):
smc = StateMachine()
with self.assertRaises(BaseException):
smc._check_smc()