public async void TestCancel()
{
//Arrange
using (var hc = new TestHostContext(this))
using (var workerManager = new WorkerManager())
{
hc.EnqueueInstance <IJobDispatcher>(_jobDispatcher.Object);
workerManager.Initialize(hc);
JobRequestMessage jobMessage = CreateJobRequestMessage();
JobCancelMessage cancelMessage = CreateJobCancelMessage(jobMessage.JobId);
bool started = false;
Task jobTask = null;
_jobDispatcher.Setup(x => x.RunAsync(jobMessage, It.IsAny <CancellationToken>()))
.Returns(async(JobRequestMessage message, CancellationToken token) =>
{
jobTask = Task.Delay(5000, token);
started = true;
await jobTask;
return(0);
});
workerManager.Run(jobMessage);
int i = 20;
while (i > 0 && (!started))
{
await Task.Delay(10);
i--;
}
Assert.True(started);
//Act
//send cancel message
workerManager.Cancel(cancelMessage);
//Assert
//wait up to 2 sec for cancellation to be processed
Task[] taskToWait = { jobTask, Task.Delay(2000) };
await Task.WhenAny(taskToWait);
_jobDispatcher.Verify(x => x.RunAsync(jobMessage, It.IsAny <CancellationToken>()),
$"{nameof(_jobDispatcher.Object.RunAsync)} not invoked");
Assert.True(jobTask.IsCompleted);
Assert.True(jobTask.IsCanceled);
}
}