@Test
public void testSkip1() {

    Observable<String> w = Observable.from("one", "two", "three");
    Observable<String> skip = Observable.create(skip(w, 2));
    @SuppressWarnings("unchecked")
    Observer<String> observer = mock(Observer.class);
    skip.subscribe(observer);
    verify(observer, never()).onNext("one");
    verify(observer, never()).onNext("two");
    verify(observer, times(1)).onNext("three");
    verify(observer, never()).onError(any(Throwable.class));
    verify(observer, times(1)).onCompleted();
}