@Test public void fromArityArgs1() { Observable<String> items = Observable.just("one"); assertEquals((Long) 1L, items.count().toBlocking().single()); assertEquals("one", items.takeLast(1).toBlocking().single()); }
@Test public void testCountError() { Observable<String> o = Observable.error(() -> new RuntimeException()); o.count().subscribe(w); verify(w, never()).onNext(anyInt()); verify(w, never()).onComplete(); verify(w, times(1)).onError(any(RuntimeException.class)); }
@Test public void testCountZeroItems() { Observable<String> observable = Observable.empty(); observable.count().subscribe(w); // we should be called only once verify(w, times(1)).onNext(anyLong()); verify(w).onNext(0L); verify(w, never()).onError(any(Throwable.class)); verify(w, times(1)).onComplete(); }
@Test public void testCountAFewItems() { Observable<String> observable = Observable.just("a", "b", "c", "d"); observable.count().subscribe(w); // we should be called only once verify(w, times(1)).onNext(anyLong()); verify(w).onNext(4L); verify(w, never()).onError(any(Throwable.class)); verify(w, times(1)).onComplete(); }