public async Task StartAsyncShouldReturnCompletedTaskIfCompleted()
{
var elevatorSystem = new Mock <IElevatorSystem>();
elevatorSystem.Setup(system =>
system.StartAsync(It.IsAny <CancellationToken>()));
var hostedService = new ElevatorSystemHostedService(elevatorSystem.Object, _waiterService);
await hostedService.StartAsync()
.ContinueWith(t =>
Assert.Equal(TaskStatus.RanToCompletion, t.Status)
);
}
public async Task StopAsyncShouldAbortIfCanceled()
{
var cts = new CancellationTokenSource();
var elevatorSystem = new Mock <IElevatorSystem>();
elevatorSystem.Setup(system =>
system.StartAsync(It.IsAny <CancellationToken>()));
var hostedService = new ElevatorSystemHostedService(elevatorSystem.Object, _waiterService);
cts.Cancel();
await hostedService.StartAsync();
await Assert.ThrowsAsync <OperationCanceledException>(() =>
hostedService.StopAsync(cts.Token)
);
}
public async Task StartAsyncShouldReturnCanceledIfCanceled()
{
var cts = new CancellationTokenSource();
var elevatorSystem = new Mock <IElevatorSystem>();
var hostedService = new ElevatorSystemHostedService(elevatorSystem.Object, _waiterService);
cts.Cancel();
elevatorSystem.Setup(system =>
system.StartAsync(It.IsAny <CancellationToken>()))
.Returns(Task.FromCanceled(cts.Token));
await hostedService.StartAsync(cts.Token)
.ContinueWith(t =>
Assert.Equal(TaskStatus.Canceled, t.Status)
);
}