public void FindSingleStuckItem()
{
var testScheduler = new TestScheduler();
var xs = testScheduler.CreateColdObservable(
OnNext(TimeSpan.FromMinutes(5).Ticks, MyInfo.Started("1")));
var results = testScheduler.CreateObserver <MyInfo>();
xs.StuckInfos(testScheduler).Subscribe(results);
testScheduler.Start();
results.Messages.AssertEqual(
OnNext(TimeSpan.FromMinutes(35).Ticks, MyInfo.Started("1")));
}