public void SetTwice_Fails()
{
var mrvts = new ManualResetValueTaskSource <int>();
mrvts.SetResult(42);
Assert.Throws <InvalidOperationException>(() => mrvts.SetResult(42));
Assert.Throws <InvalidOperationException>(() => mrvts.SetException(new Exception()));
mrvts.Reset();
mrvts.SetException(new Exception());
Assert.Throws <InvalidOperationException>(() => mrvts.SetResult(42));
Assert.Throws <InvalidOperationException>(() => mrvts.SetException(new Exception()));
}
public async Task SetException_AfterOnCompleted_ResultAvailableAsynchronously()
{
var mrvts = new ManualResetValueTaskSource <int>();
mrvts.Reset();
mrvts.Reset();
Assert.Equal(2, mrvts.Version);
Assert.Equal(ValueTaskSourceStatus.Pending, mrvts.GetStatus(2));
Assert.Throws <InvalidOperationException>(() => mrvts.GetResult(2));
var onCompletedRan = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
mrvts.OnCompleted(s => ((TaskCompletionSource)s).SetResult(), onCompletedRan, 2, ValueTaskSourceOnCompletedFlags.None);
Assert.False(onCompletedRan.Task.IsCompleted);
await Task.Delay(1);
Assert.False(onCompletedRan.Task.IsCompleted);
var e = new FormatException();
mrvts.SetException(e);
Assert.Equal(ValueTaskSourceStatus.Faulted, mrvts.GetStatus(2));
Assert.Same(e, Assert.Throws <FormatException>(() => mrvts.GetResult(2)));
await onCompletedRan.Task;
Assert.Equal(2, mrvts.Version);
}
public void SetException_OperationCanceledException_StatusIsCanceled()
{
var mrvts = new ManualResetValueTaskSource <int>();
var e = new OperationCanceledException();
mrvts.SetException(e);
Assert.Equal(ValueTaskSourceStatus.Canceled, mrvts.GetStatus(0));
Assert.Same(e, Assert.Throws <OperationCanceledException>(() => mrvts.GetResult(0)));
}
public static ManualResetValueTaskSource <T> Completed <T>(T result, Exception error = null)
{
var vts = new ManualResetValueTaskSource <T>();
if (error != null)
{
vts.SetException(error);
}
else
{
vts.SetResult(result);
}
return(vts);
}
/// <summary>
/// Complete with or without an error.
/// </summary>
public static void SetExceptionOrResult(this ManualResetValueTaskSource ts, Exception exceptionOrNot)
{
if (ts is null)
{
throw new ArgumentNullException(nameof(ts));
}
if (exceptionOrNot is null)
{
ts.SetResult();
}
else
{
ts.SetException(exceptionOrNot);
}
}
public static ManualResetValueTaskSource <T> Delay <T>(int delayMs, T result, Exception error = null)
{
var vts = new ManualResetValueTaskSource <T>();
Task.Delay(delayMs).ContinueWith(_ =>
{
if (error != null)
{
vts.SetException(error);
}
else
{
vts.SetResult(result);
}
});
return(vts);
}
public void SetException_BeforeOnCompleted_ResultAvailableSynchronously()
{
var mrvts = new ManualResetValueTaskSource <int>();
mrvts.Reset();
mrvts.Reset();
Assert.Equal(2, mrvts.Version);
var e = new FormatException();
mrvts.SetException(e);
Assert.Equal(ValueTaskSourceStatus.Faulted, mrvts.GetStatus(2));
Assert.Same(e, Assert.Throws <FormatException>(() => mrvts.GetResult(2)));
var mres = new ManualResetEventSlim();
mrvts.OnCompleted(s => ((ManualResetEventSlim)s).Set(), mres, 2, ValueTaskSourceOnCompletedFlags.None);
mres.Wait();
Assert.Equal(2, mrvts.Version);
}
public async Task SetException_BeforeOnCompleted_ResultAvailableSynchronously()
{
var mrvts = new ManualResetValueTaskSource <int>();
mrvts.Reset();
mrvts.Reset();
Assert.Equal(2, mrvts.Version);
var e = new FormatException();
mrvts.SetException(e);
Assert.Equal(ValueTaskSourceStatus.Faulted, mrvts.GetStatus(2));
Assert.Same(e, Assert.Throws <FormatException>(() => mrvts.GetResult(2)));
var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
mrvts.OnCompleted(s => ((TaskCompletionSource)s).SetResult(), tcs, 2, ValueTaskSourceOnCompletedFlags.None);
await tcs.Task;
Assert.Equal(2, mrvts.Version);
}