public void OrCancellationWorks()
{
var comp = Task.FromResult(true);
Assert.Equal(comp, comp.OrCancellation(new CancellationToken(true)));
Assert.Equal(comp, comp.OrCancellation(new CancellationToken(false)));
var never = new TaskCompletionSource <int>().Task;
Assert.True(never.OrCancellation(new CancellationToken(true)).IsCanceled);
using (var cts = new CancellationTokenSource())
{
var task = never.OrCancellation(cts.Token);
Assert.False(task.IsCanceled);
cts.Cancel();
Assert.True(task.IsCanceled);
}
}