public void FromTask_ReturnsTokenWithoutCancellationRequested()
{
var tcs = new TaskCompletionSource();
var result = CancellationTokenHelpers.FromTask(tcs.Task);
Assert.IsTrue(result.Token.CanBeCanceled);
Assert.IsFalse(result.Token.IsCancellationRequested);
}
public void FromTaskSynchronously_TaskCompletes_TokenGetsCancellationRequested()
{
var tcs = new TaskCompletionSource();
var result = CancellationTokenHelpers.FromTask(tcs.Task, TaskContinuationOptions.ExecuteSynchronously);
tcs.SetResult();
Assert.IsTrue(result.Token.CanBeCanceled);
Assert.IsTrue(result.Token.IsCancellationRequested);
}
/// <summary>
/// [Caution] As per the AsyncEx notes, this is a hack, and neither thread-safe nor truly immediate.
/// </summary>
public static bool IsSet(this AsyncManualResetEvent source)
{
try
{
source.Wait(CancellationTokenHelpers.FromTask(Task.Delay(5)).Token);
return(true);
}
catch (System.OperationCanceledException)
{
return(false);
}
}
