public void CancellationTokenCancelsOperation()
{
var sm = new StateMachine("sm");
var initial = sm.CreateInitialState("initial");
var doingOperation = sm.CreateState("doingOperation");
var completedOperation = sm.CreateState("completedOperation");
var evt = new Event("evt");
initial.TransitionOn(evt).To(doingOperation);
doingOperation.TransitionOn(evt).To(completedOperation);
var cts = new CancellationTokenSource();
var op = new Operation<State>(evt, doingOperation, completedOperation);
var task = op.TryFireAsync(cts.Token);
Assert.False(task.IsCompleted);
Assert.False(task.IsCanceled);
cts.Cancel();
Assert.True(task.IsCanceled);
// Check nothing explodes
evt.Fire();
}
public void OperationCompletesWhenASuccessStateIsReached()
{
var sm = new StateMachine("sm");
var initial = sm.CreateInitialState("initial");
var doingOperation = sm.CreateState("doingOperation");
var completedOperation = sm.CreateState("completedOperation");
var evt = new Event("evt");
initial.TransitionOn(evt).To(doingOperation);
doingOperation.TransitionOn(evt).To(completedOperation);
var op = new Operation<State>(evt, doingOperation, completedOperation);
var task = op.TryFireAsync();
Assert.False(task.IsCompleted);
Assert.AreEqual(doingOperation, sm.CurrentState);
evt.TryFire();
Assert.True(task.IsCompleted);
Assert.True(task.Result);
}
public void OperationFailsIfANonSuccessStateIsReached()
{
var sm = new StateMachine("sm");
var initial = sm.CreateInitialState("initial");
var doingOperation = sm.CreateState("doingOperation");
var completedOperation = sm.CreateState("completedOperation");
var operationFailed = sm.CreateState("operationFailed");
var evt = new Event("evt");
initial.TransitionOn(evt).To(doingOperation);
doingOperation.TransitionOn(evt).To(operationFailed);
var op = new Operation<State>(evt, doingOperation, completedOperation);
var task = op.TryFireAsync();
Assert.False(task.IsCompleted);
Assert.AreEqual(doingOperation, sm.CurrentState);
evt.TryFire();
Assert.True(task.IsFaulted);
var e = Assert.Throws<OperationFailedException>(() => task.GetAwaiter().GetResult());
Assert.AreEqual(doingOperation, e.OperationStates[0]);
Assert.AreEqual(operationFailed, e.ActualState);
Assert.That(e.SuccessStates, Is.EquivalentTo(new[] { completedOperation }));
}
public void TryFireReturnsFalseIfEventTryFireReturnedFalse()
{
var sm = new StateMachine("sm");
var initial = sm.CreateInitialState("initial");
var operation = sm.CreateState("state2");
var success = sm.CreateState("success");
var evt = new Event("evt");
operation.TransitionOn(evt).To(operation);
var op = new Operation<State>(evt, operation, success);
var task = op.TryFireAsync();
Assert.True(task.IsCompleted);
Assert.False(task.Result);
}
