public async Task AsyncLockSynchronizesAccess()
{
AsyncLock asyncLock = new AsyncLock();
Task<IDisposable> lockOne = asyncLock.LockAsync();
Task<IDisposable> lockTwo = asyncLock.LockAsync();
Assert.Equal(TaskStatus.RanToCompletion, lockOne.Status);
Assert.Equal(TaskStatus.WaitingForActivation, lockTwo.Status);
lockOne.Result.Dispose();
await lockTwo;
Assert.Equal(TaskStatus.RanToCompletion, lockTwo.Status);
}
public void AsyncLockCancelsWhenRequested()
{
CancellationTokenSource cts = new CancellationTokenSource();
AsyncLock asyncLock = new AsyncLock();
Task<IDisposable> lockOne = asyncLock.LockAsync();
Task<IDisposable> lockTwo = asyncLock.LockAsync(cts.Token);
// Cancel the second lock before the first is released
cts.Cancel();
lockOne.Result.Dispose();
Assert.Equal(TaskStatus.RanToCompletion, lockOne.Status);
Assert.Equal(TaskStatus.Canceled, lockTwo.Status);
}