public void TestSetCurrentState()
{
FiniteStateMachineEngine engine = new FiniteStateMachineEngine("Turnstile");
FiniteState gettingWorkItem = new FiniteState("GettingWorkItem")
{
OnEnterAction = () => { }
};
FiniteState movingToProcessed = new FiniteState("MovingToProcessed")
{
OnEnterAction = () => { }
};
engine.AddState(gettingWorkItem);
engine.AddState(movingToProcessed);
Assert.That(engine.ManagedStates.Count, Is.EqualTo(2));
Assert.That(engine.ManagedStates.ContainsKey(gettingWorkItem.Name));
Assert.That(engine.ManagedStates.ContainsKey(movingToProcessed.Name));
engine.SetCurrentState(gettingWorkItem);
Assert.That(engine.CurrentState, Is.EqualTo(gettingWorkItem));
engine.SetCurrentState(movingToProcessed);
Assert.That(engine.CurrentState, Is.EqualTo(movingToProcessed));
}
public void TestNoTransitionForEvent()
{
FiniteStateMachineEngine engine = new FiniteStateMachineEngine("Turnstile");
FiniteState gettingWorkItem = new FiniteState("GettingWorkItem")
{
OnEnterAction = () => { }
};
FiniteState movingToProcessed = new FiniteState("MovingToProcessed")
{
OnEnterAction = () => { }
};
FiniteStateEvent actionSucceeded = new FiniteStateEvent("ActionSucceeded");
engine.AddState(gettingWorkItem);
engine.AddState(movingToProcessed);
engine.SetCurrentState(gettingWorkItem);
engine.RaiseEvent(actionSucceeded);
Assert.That(() =>
{
engine.HandlePendingEvents();
}, Throws.InstanceOf <ArgumentException>().And.Message.EqualTo($"Failed to find a transition for event '{actionSucceeded.Name}' from state '{gettingWorkItem.Name}'."));
}
public void TestSetCurrentStateToNonManagedState()
{
FiniteStateMachineEngine engine = new FiniteStateMachineEngine("Turnstile");
FiniteState gettingWorkItem = new FiniteState("GettingWorkItem")
{
OnEnterAction = () => { }
};
FiniteState movingToProcessed = new FiniteState("MovingToProcessed")
{
OnEnterAction = () => { }
};
engine.AddState(gettingWorkItem);
// do not add the second one
//engine.AddState(movingToProcessed);
//engine.SetCurrentState(gettingWorkItem);
//Assert.That(engine.CurrentState, Is.EqualTo(gettingWorkItem));
Assert.That(() =>
{
engine.SetCurrentState(movingToProcessed);
}, Throws.InstanceOf <ArgumentException>().And.Message.EqualTo($"Attempted to set current state to '{movingToProcessed.Name}' but no state of that name is managed by this state machine."));
}