public async void What_Is_The_Behavior_Of_Observable_FromEvent()
{
//Arrange
var testTarget = new MyTest();
//testTarget.TestStarted += HandleTestStarted;
//testTarget.OnTestStart();
var observableTarget =
Observable.FromEventPattern(h => testTarget.TestStarted += h, h => testTarget.TestStarted -= h);
IObserver <EventPattern <object> > testObserver = new TestObserver(HandleTestStarted);
//observableTarget.Subscribe(testObserver);
var myTask = observableTarget.Timeout(TimeSpan.FromSeconds(1)).ToTask();
await myTask;
testTarget.OnTestStart();
}