public void ManySelect_ArgumentChecking()
{
ReactiveAssert.Throws <ArgumentNullException>(() => ObservableEx.ManySelect <int, int>(null, DummyFunc <IObservable <int>, int> .Instance, DummyScheduler.Instance));
ReactiveAssert.Throws <ArgumentNullException>(() => ObservableEx.ManySelect <int, int>(DummyObservable <int> .Instance, null, DummyScheduler.Instance));
ReactiveAssert.Throws <ArgumentNullException>(() => ObservableEx.ManySelect <int, int>(DummyObservable <int> .Instance, DummyFunc <IObservable <int>, int> .Instance, null));
ReactiveAssert.Throws <ArgumentNullException>(() => ObservableEx.ManySelect <int, int>(null, DummyFunc <IObservable <int>, int> .Instance));
ReactiveAssert.Throws <ArgumentNullException>(() => ObservableEx.ManySelect <int, int>(DummyObservable <int> .Instance, null));
}