@Test
public void testFirstWithPredicateOfNoneMatchingThePredicate() {
Observable<Integer> observable = Observable.just(1, 3, 5, 7, 9, 7, 5, 3, 1);
observable.filter(IS_EVEN).first().subscribe(w);
verify(w, never()).onNext(anyInt());
verify(w, never()).onComplete();
verify(w, times(1)).onError(isA(NoSuchElementException.class));
}
