public static bool CancelAfterWait()
{
TestHarness.TestLog("* BarrierCancellationTests.CancelAfterWait()");
bool passed = true;
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
CancellationToken cancellationToken = cancellationTokenSource.Token;
const int numberParticipants = 3;
Barrier barrier = new Barrier(numberParticipants);
ThreadPool.QueueUserWorkItem(
(args) =>
{
Thread.Sleep(1000);
cancellationTokenSource.Cancel();
}
);
//Now wait.. the wait should abort and an exception should be thrown
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(
() => barrier.SignalAndWait(cancellationToken),
cancellationToken, "An OCE(null) should have been thrown that references the cancellationToken.");
//Test that backout occured.
passed &= TestHarnessAssert.AreEqual(numberParticipants, barrier.ParticipantsRemaining,
"All participants should remain as the current one should have backout out its signal");
// the token should not have any listeners.
// currently we don't expose this.. but it was verified manually
return(passed);
}
public static bool CancelAfterWait()
{
TestHarness.TestLog("* CountdownEventCancellationTests.CancelAfterWait()");
bool passed = true;
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
CancellationToken cancellationToken = cancellationTokenSource.Token;
CountdownEvent countdownEvent = new CountdownEvent(2);; // countdownEvent that will block all waiters
ThreadPool.QueueUserWorkItem(
(args) =>
{
Thread.Sleep(1000);
cancellationTokenSource.Cancel();
}
);
//Now wait.. the wait should abort and an exception should be thrown
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(
() => countdownEvent.Wait(cancellationToken),
cancellationToken, "An OCE(null) should have been thrown that references the cancellationToken.");
// the token should not have any listeners.
// currently we don't expose this.. but it was verified manually
return(passed);
}
public static bool ExternalCancel_GetConsumingEnumerable()
{
TestHarness.TestLog("* BlockingCollectionCancellationTests.ExternalCancel_GetConsumingEnumerable()");
bool passed = true;
BlockingCollection <int> bc = new BlockingCollection <int>();
CancellationTokenSource cs = new CancellationTokenSource();
ThreadPool.QueueUserWorkItem(
(obj) =>
{
Thread.Sleep(100);
cs.Cancel();
});
IEnumerable <int> enumerable = bc.GetConsumingEnumerable(cs.Token);
passed &= TestHarnessAssert.IsFalse(cs.IsCancellationRequested, "At this point the cancel should not have occurred.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(
() => enumerable.GetEnumerator().MoveNext(),
cs.Token,
"The operation should wake up via token cancellation.");
return(passed);
}
public static bool ExternalCancel_TryAddToAny()
{
TestHarness.TestLog("* BlockingCollectionCancellationTests.ExternalCancel_AddToAny()");
bool passed = true;
BlockingCollection <int> bc1 = new BlockingCollection <int>(1);
BlockingCollection <int> bc2 = new BlockingCollection <int>(1);
bc1.Add(1); //fill the bc.
bc2.Add(1); //fill the bc.
CancellationTokenSource cs = new CancellationTokenSource();
ThreadPool.QueueUserWorkItem(
(obj) =>
{
Thread.Sleep(100);
cs.Cancel();
});
passed &= TestHarnessAssert.IsFalse(cs.IsCancellationRequested, "At this point the cancel should not have occurred.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(
() => BlockingCollection <int> .TryAddToAny(new[] { bc1, bc2 }, 1, 10000, cs.Token),
cs.Token,
"The operation should wake up via token cancellation.");
return(passed);
}
public static bool ExternalCancel_TryTake()
{
TestHarness.TestLog("* BlockingCollectionCancellationTests.ExternalCancel_TryTake()");
bool passed = true;
BlockingCollection <int> bc = new BlockingCollection <int>(); //empty collection.
CancellationTokenSource cs = new CancellationTokenSource();
ThreadPool.QueueUserWorkItem(
(obj) =>
{
Thread.Sleep(100);
cs.Cancel();
});
int item;
passed &= TestHarnessAssert.IsFalse(cs.IsCancellationRequested, "At this point the cancel should not have occurred.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(
() => bc.TryTake(out item, 100000, cs.Token),
cs.Token,
"The operation should wake up via token cancellation.");
return(passed);
}
public static bool CancelBeforeWait()
{
TestHarness.TestLog("* ManualResetEventCancellationTests.CancelBeforeWait()");
bool passed = true;
ManualResetEventSlim mres = new ManualResetEventSlim();
CancellationTokenSource cs = new CancellationTokenSource();
cs.Cancel();
CancellationToken ct = cs.Token;
const int millisec = 100;
TimeSpan timeSpan = new TimeSpan(100);
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => mres.Wait(ct), ct, "An OCE should have been thrown.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => mres.Wait(millisec, ct), ct, "An OCE should have been thrown.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => mres.Wait(timeSpan, ct), ct, "An OCE should have been thrown.");
mres.Dispose();
return(passed);
}
public static bool CancelBeforeWait()
{
TestHarness.TestLog("* BarrierCancellationTests.CancelBeforeWait()");
bool passed = true;
Barrier barrier = new Barrier(3);
CancellationTokenSource cs = new CancellationTokenSource();
cs.Cancel();
CancellationToken ct = cs.Token;
const int millisec = 100;
TimeSpan timeSpan = new TimeSpan(100);
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => barrier.SignalAndWait(ct), ct, "An OCE should have been thrown.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => barrier.SignalAndWait(millisec, ct), ct, "An OCE should have been thrown.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => barrier.SignalAndWait(timeSpan, ct), ct, "An OCE should have been thrown.");
barrier.Dispose();
return(passed);
}
public static bool CancelBeforeWait()
{
TestHarness.TestLog("* SemaphoreSlimCancellationTests.CancelBeforeWait()");
bool passed = true;
SemaphoreSlim semaphoreSlim = new SemaphoreSlim(2);
CancellationTokenSource cs = new CancellationTokenSource();
cs.Cancel();
CancellationToken ct = cs.Token;
const int millisec = 100;
TimeSpan timeSpan = new TimeSpan(100);
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => semaphoreSlim.Wait(ct), ct, "An OCE should have been thrown.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => semaphoreSlim.Wait(millisec, ct), ct, "An OCE should have been thrown.");
passed &= TestHarnessAssert.EnsureOperationCanceledExceptionThrown(() => semaphoreSlim.Wait(timeSpan, ct), ct, "An OCE should have been thrown.");
semaphoreSlim.Dispose();
return(passed);
}
