public void CancelResultWhenFirstIsCanceledOption2()
{
Task <int> aTask = CreateCanceledTask();
Task <string> result = Expression2(aTask, alwaysFinished);
AdditionalAssertions.WaitIsCanceled(result);
}
public void CanceledCase()
{
/* Arrange */
Task <int> canceled = Factory.CreateCanceledTask();
/* Act */
Task <int> second = AddTaskToChain(canceled);
/* Assert */
AdditionalAssertions.WaitIsCanceled(second);
}
public void TaskCanceledBeforeStart()
{
/* Arrange */
var source = new CancellationTokenSource();
source.Cancel();
// Act
Task <int> task = Task.Run(() => 5, source.Token);
// Assert
AdditionalAssertions.WaitIsCanceled(task);
}
public void ThrowOperationCanceledExceptionWithCancellationTokenSupplied()
{
/* Arrange */
var source = new CancellationTokenSource();
source.CancelAfter(TimeSpan.FromSeconds(1));
/* Act */
Task <int> task = Task.Run(() => ThrowAfterSomeTimeIfCancellationRequested(source.Token), source.Token);
/* Assert */
AdditionalAssertions.WaitIsCanceled(task);
}
public void SelfCanceledTask()
{
/* Arrange */
CancellationTokenSource selfCts = new CancellationTokenSource();
/* Act */
Task <int> task = Task.Run(() =>
{
selfCts.Cancel();
selfCts.Token.ThrowIfCancellationRequested();
return(5);
}, selfCts.Token);
/* Assert */
AdditionalAssertions.WaitIsCanceled(task);
}
public void Canceled()
{
/* Arrange */
Task <int> task = Factory.CreateCanceledTask();
/* Assert */
Assert.True(task.IsCompleted);
Assert.Equal(TaskStatus.Canceled, task.Status);
Assert.True(task.IsCanceled);
Assert.Null(task.Exception);
AdditionalAssertions.ThrowsTaskCanceledException(() => task.Result);
AdditionalAssertions.ThrowsTaskCanceledException(() => task.Wait(0));
// same as
AdditionalAssertions.WaitIsCanceled(task);
}
public void RunToCompletionContinuationOptionWhileFirstIsCanceled()
{
/* Arrange */
Task <int> canceled = Factory.CreateCanceledTask();
/* Act */
Task <int> second = canceled
.ContinueWith(t => t.Result + 5, TaskContinuationOptions.OnlyOnRanToCompletion);
/* Assert */
AdditionalAssertions.WaitIsCanceled(second);
Assert.Null(second.Exception);
AggregateException resultException = Assert.Throws <AggregateException>(() => second.Result);
AggregateException waitException = Assert.Throws <AggregateException>(() => second.Wait(0));
AdditionalAssertions.IsTaskCanceledAggregateException(resultException);
AdditionalAssertions.IsTaskCanceledAggregateException(waitException);
}
public void CancelResultWhenFirstIsCanceled()
{
CancellationTokenSource selfCts = new CancellationTokenSource();
Task <int> aTask = CreateCanceledTask();
Task <string> result = Task.Factory.ContinueWhenAll(new Task[] { aTask, alwaysFinished }, tasks =>
{
if (aTask.IsCanceled)
{
selfCts.Cancel();
selfCts.Token.ThrowIfCancellationRequested();
return(null);
}
return(aTask.Result + alwaysFinished.Result);
}, selfCts.Token);
AdditionalAssertions.WaitIsCanceled(result);
}
