public void NextTaskInChainWhilePreviousIsCanceled()
{
/* Arrange */
Task <int> canceled = Factory.CreateCanceledTask();
/* Act */
Task <int> result = canceled
.ContinueWith(t => t.Result + 5);
/* Assert */
AdditionalAssertions.WaitIsFaulted(result);
AggregateException exception = result.Exception;
AggregateException resultException = Assert.Throws <AggregateException>(() => result.Result);
AggregateException waitException = Assert.Throws <AggregateException>(() => result.Wait(0));
Assert.NotNull(exception);
AdditionalAssertions.IsTaskCanceledAggregateException(exception.Flatten());
AdditionalAssertions.IsTaskCanceledAggregateException(resultException.Flatten());
AdditionalAssertions.IsTaskCanceledAggregateException(waitException.Flatten());
AssertTaskCanceledAggregateExceptionInside(exception);
AssertTaskCanceledAggregateExceptionInside(resultException);
AssertTaskCanceledAggregateExceptionInside(waitException);
}
private void AssertTaskCanceledAggregateExceptionInside(AggregateException aggregateException)
{
// detailed structure
Exception innerException = aggregateException.InnerExceptions.Single();
AdditionalAssertions.IsTaskCanceledAggregateException(innerException);
}
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);
}