public void ThrowsInvalidOperationException()
{
Exception caughtException = null;
var state = new InvalidTransitionState("Some message");
var observable = state.Start();
observable.Subscribe(_ => { }, (Exception exception) => caughtException = exception);
caughtException.Should().NotBeNull();
caughtException.Should().BeOfType <InvalidOperationException>();
}
public void ThrowsInvalidOperationExceptionWithASpecificMessage(NonEmptyString message)
{
if (message.Get.Trim().Length == 0)
{
return;
}
Exception caughtException = null;
var state = new InvalidTransitionState(message.Get);
var observable = state.Start();
observable.Subscribe(_ => { }, (Exception exception) => caughtException = exception);
caughtException.Message.Should().Be($"Invalid transition: {message}");
}
public void DoesNotThrowWhenNobodySubscribesToTheReturnedObservable()
{
var state = new InvalidTransitionState("Error.");
state.Start();
}