public void TransitionEvents()
{
StateMachine stateMachine = new StateMachine();
SimpleState s0 = new SimpleState(), s1 = new SimpleState();
stateMachine.AddState(s0);
stateMachine.AddState(s1);
stateMachine.AddEntryTransition(0, null);
stateMachine.AddExitTransition(1, null);
TransitionTrigger trigger = new TransitionTrigger();
stateMachine.AddTransition(0, 1, trigger);
List <string> result = new List <string>();
s0.StateLeave += () => result.Add("leave: 0");
s1.StateEnter += () => result.Add("enter: 1");
trigger.BeforeTransition += () =>
{
result.Add("before transition");
Assert.AreEqual("0.-1", stateMachine.GenerateActiveStateDescriptor());
};
trigger.AfterTransition += () =>
{
result.Add("after transition");
Assert.AreEqual("-1", stateMachine.GenerateActiveStateDescriptor());
};
stateMachine.Run();
trigger.Fire();
Assert.AreEqual(4, result.Count);
Assert.AreEqual("before transition", result[0]);
Assert.AreEqual("leave: 0", result[1]);
Assert.AreEqual("enter: 1", result[2]);
Assert.AreEqual("after transition", result[3]);
trigger.BeforeTransition += () => trigger.StopTransition();
result.Clear();
stateMachine.Reset();
stateMachine.Run();
trigger.Fire();
Assert.AreEqual(1, result.Count);
Assert.AreEqual("before transition", result[0]);
}
/*
* | state id | state name |
* | 0 | unconnected |
* | 1 | connected |
* | 2 | recovery |
*/
private void BuildStateMachine(ITransportationStateProvider transportationStateProvider)
{
stateMachine.AddState(unconnectedState);
stateMachine.AddState(connectedState);
stateMachine.AddState(recoveryState);
transportationStateProvider.ConnectionEstablished += () => transportationReadyTrigger.Fire();
transportationStateProvider.ConnectionLost += () => transportationLostTrigger.Fire();
unconnectedState.StateEnter += () =>
{
if (!started)
{
started = true;
return;
}
Logger.Log($"unconnectedState.StateEnter, stop timers, state={StateDescr()}", "FT");
silenceTimer.Stop();
heartBeatTimer.Stop();
Logger.Log($"invoking connection lost event, state={StateDescr()}", "FT");
ConnectionLost?.Invoke();
};
unconnectedState.StateLeave += () =>
{
Logger.Log($"unconnectedState.StateLeave, start silence timer, state={StateDescr()}", "FT");
silenceTimer.Start();
};
connectedState.StateEnter += () =>
{
Logger.Log($"connectedState.StateEnter, start heart beat, state={StateDescr()}", "FT");
heartBeatTimer.Start();
};
stateMachine.AddEntryTransition(0, null);
stateMachine.AddTransition(1, 0, silenceTimeoutTrigger);
stateMachine.AddTransition(1, 0, transportationLostTrigger);
AddCustomTransitionsAndActions();
stateMachine.Run();
}
public void MultiEdges()
{
StateMachine stateMachine = new StateMachine();
SimpleState s0 = new SimpleState(), s1 = new SimpleState();
stateMachine.AddState(s0);
stateMachine.AddState(s1);
stateMachine.AddEntryTransition(0, null);
stateMachine.AddExitTransition(1, null);
TransitionTrigger trigger0 = new TransitionTrigger();
TransitionTrigger trigger1 = new TransitionTrigger();
stateMachine.AddTransition(0, 1, trigger0);
stateMachine.AddTransition(0, 1, trigger1);
stateMachine.Run();
trigger0.Fire();
Assert.AreEqual("-1", stateMachine.GenerateActiveStateDescriptor());
stateMachine.Reset();
stateMachine.Run();
trigger1.Fire();
Assert.AreEqual("-1", stateMachine.GenerateActiveStateDescriptor());
}