public async Task Precancelled()
{
var e = new AutoResetEventAsync(false);
var src = new CancellationTokenSource();
src.Cancel();
await TaskHelpers.AssertCancelled(e.WaitAsync(src.Token));
}
public async Task DelayCancelled()
{
var e = new AutoResetEventAsync(false);
var src = new CancellationTokenSource();
Task waitAsync = e.WaitAsync(src.Token);
src.CancelAfter(TimeSpan.FromSeconds(TaskHelpers.WaitTime.TotalSeconds / 2));
await TaskHelpers.AssertCancelled(waitAsync);
}
public async Task DoubleCanncelled()
{
var e = new AutoResetEventAsync(false);
var src = new CancellationTokenSource();
Task waitAsync = e.WaitAsync(src.Token);
Task wait2Async = e.WaitAsync(src.Token);
src.Cancel();
await TaskHelpers.AssertCancelled(waitAsync);
await TaskHelpers.AssertCancelled(wait2Async);
}
public async Task ReceiveNoData_Cancelled()
{
(Stream a, Stream b) = PairedStream.Create();
var buffer = new byte[s_bytes.Length * 2];
var cts = new CancellationTokenSource();
Task[] tasks =
{
a.ReadAsync(buffer, 0, buffer.Length, cts.Token),
b.ReadAsync(buffer, 0, buffer.Length, cts.Token)
};
await TaskHelpers.AssertNotTriggered(tasks[0]);
await TaskHelpers.AssertNotTriggered(tasks[1]);
cts.Cancel();
await TaskHelpers.AssertCancelled(tasks[0]);
await TaskHelpers.AssertCancelled(tasks[1]);
}
