public void TestPerformTransitionToSameState()
{
// arrange
var mockedContext = new Mock <TrackingContext>();
var mockedState = new Mock <StateBase>(FSMStateId.Idle);
var fsm = new GesturesFSM <TrackingContext>(mockedContext.Object);
int stateEntranceCount = 0;
int stateChangedRaisedCount = 0;
fsm.AddTransition(FSMStateId.Unknown, FSMEventId.Unknown, mockedState.Object);
fsm.AddTransition(FSMStateId.Idle, FSMEventId.GoIdle, mockedState.Object);
fsm.StateChanged += new StateChangedEventHandler((obj, args) => ++ stateChangedRaisedCount);
mockedState.Setup(x => x.StateEntered(mockedContext.Object)).Callback(() => ++ stateEntranceCount);
mockedState.Setup(x => x.StateExited()).Callback(() => Assert.Fail("Should not exit state"));
// act
fsm.PerformTransition(FSMEventId.Unknown);
fsm.PerformTransition(FSMEventId.GoIdle);
// assert
Assert.AreEqual(1, stateEntranceCount, "state entered only once");
Assert.AreEqual(1, stateChangedRaisedCount, "state changed event raised only once");
}
public void TestPerformTransitionToAnotherState()
{
// arrange
var mockedContext = new Mock <TrackingContext>();
var mockedState = new Mock <StateBase>(FSMStateId.Idle);
var mockedState2 = new Mock <StateBase>(FSMStateId.Recording);
var fsm = new GesturesFSM <TrackingContext>(mockedContext.Object);
int stateChangedRaisedCount = 0;
fsm.AddTransition(FSMStateId.Unknown, FSMEventId.Unknown, mockedState.Object);
fsm.AddTransition(FSMStateId.Idle, FSMEventId.Record, mockedState2.Object);
fsm.StateChanged += new StateChangedEventHandler((obj, args) => ++ stateChangedRaisedCount);
mockedState.Setup(x => x.StateEntered(mockedContext.Object));
mockedState.Setup(x => x.StateExited());
mockedState2.Setup(x => x.StateEntered(mockedContext.Object));
// act
fsm.PerformTransition(FSMEventId.Unknown);
fsm.PerformTransition(FSMEventId.Record);
// assert
Assert.AreEqual(2, stateChangedRaisedCount, "state changed event raised for all states");
mockedState.VerifyAll();
mockedState2.VerifyAll();
}
public void TestAddTransition()
{
// arrange
var mockedContext = new Mock <TrackingContext>();
var mockedState = new Mock <IState <TrackingContext> >();
var fsm = new GesturesFSM <TrackingContext>(mockedContext.Object);
// act
fsm.AddTransition(FSMStateId.Unknown, FSMEventId.Unknown, mockedState.Object);
fsm.PerformTransition(FSMEventId.Unknown);
// assert
mockedState.VerifySet(x => x.Controller = fsm, "controller successfully set to state");
Assert.IsTrue(object.ReferenceEquals(mockedState.Object, fsm.Current), "state successfully added");
}
