def test_firing_event_with_name_with_invalid_event_name(self):
start_state = State(name='start')
busy_state = State(name='busy')
do_work_event = Event(name='do_work', source_states=[start_state], destination_state=busy_state)
fsm = StateMachine(states=[start_state, busy_state], events=[do_work_event], initial_state=busy_state)
fsm.activate()
with pytest.raises(StateMachineEventError) as context:
fsm.fire_event_with_name('do_work')
expected_exception = context.value
assert expected_exception.identifier == STATE_MACHINE.INVALID_EVENT_IDENTIFIER
def test_firing_event_with_name_successfully(self):
start_state = State(name='start')
busy_state = State(name='busy')
do_work_event = Event(name='do_work', source_states=[start_state], destination_state=busy_state)
fsm = StateMachine(states=[start_state, busy_state], events=[do_work_event], initial_state=start_state)
fsm.activate()
assert fsm.fire_event_with_name('do_work')
def test_firing_event_with_name_that_is_declined(self):
def decline_event(transition):
return False
start_state = State(name='start')
busy_state = State(name='busy')
do_work_info = EventCallbacks(should_fire_event=decline_event)
do_work_event = Event(name='do_work',
source_states=[start_state],
destination_state=busy_state,
callbacks=do_work_info)
fsm = StateMachine(states=[start_state, busy_state], events=[do_work_event], initial_state=start_state)
fsm.activate()
with pytest.raises(StateMachineEventError) as context_manager:
fsm.fire_event_with_name('do_work')
expected_exception = context_manager.value
assert expected_exception.identifier == STATE_MACHINE.DECLINED_EVENT_IDENTIFIER
