예제 #1
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  /**
   * The error from the user provided Observable is handled by the subscribe try/catch because this
   * is synchronous
   *
   * <p>Result: Passes
   */
  @Test
  public void testCustomObservableWithErrorInObservableSynchronous() {
    final AtomicInteger count = new AtomicInteger();
    final AtomicReference<Throwable> error = new AtomicReference<>();
    // FIXME custom built???
    Observable.just("1", "2")
        .concatWith(Observable.error(() -> new NumberFormatException()))
        .subscribe(
            new Observer<String>() {

              @Override
              public void onComplete() {
                System.out.println("completed");
              }

              @Override
              public void onError(Throwable e) {
                error.set(e);
                System.out.println("error");
                e.printStackTrace();
              }

              @Override
              public void onNext(String v) {
                System.out.println(v);
                count.incrementAndGet();
              }
            });
    assertEquals(2, count.get());
    assertNotNull(error.get());
    if (!(error.get() instanceof NumberFormatException)) {
      fail("It should be a NumberFormatException");
    }
  }
예제 #2
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  @Test
  public void testTakeWithErrorInObserver() {
    final AtomicInteger count = new AtomicInteger();
    final AtomicReference<Throwable> error = new AtomicReference<>();
    Observable.just("1", "2", "three", "4")
        .take(3)
        .safeSubscribe(
            new Observer<String>() {

              @Override
              public void onComplete() {
                System.out.println("completed");
              }

              @Override
              public void onError(Throwable e) {
                error.set(e);
                System.out.println("error");
                e.printStackTrace();
              }

              @Override
              public void onNext(String v) {
                int num = Integer.parseInt(v);
                System.out.println(num);
                // doSomething(num);
                count.incrementAndGet();
              }
            });
    assertEquals(2, count.get());
    assertNotNull(error.get());
    if (!(error.get() instanceof NumberFormatException)) {
      fail("It should be a NumberFormatException");
    }
  }
예제 #3
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  @Test
  public void fromArityArgs1() {
    Observable<String> items = Observable.just("one");

    assertEquals((Long) 1L, items.count().toBlocking().single());
    assertEquals("one", items.takeLast(1).toBlocking().single());
  }
예제 #4
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 @Test
 public void testCompose() {
   TestSubscriber<String> ts = new TestSubscriber<>();
   Observable.just(1, 2, 3).compose(t1 -> t1.map(String::valueOf)).subscribe(ts);
   ts.assertTerminated();
   ts.assertNoErrors();
   ts.assertValues("1", "2", "3");
 }
예제 #5
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 @Test
 public void testReduceWithInitialValue() {
   Observable<Integer> observable = Observable.just(1, 2, 3, 4);
   observable.reduce(50, (t1, t2) -> t1 + t2).subscribe(w);
   // we should be called only once
   verify(w, times(1)).onNext(anyInt());
   verify(w).onNext(60);
 }
예제 #6
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 @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));
 }
예제 #7
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 @Test
 public void testTakeFirstWithPredicateOfNoneMatchingThePredicate() {
   Observable<Integer> observable = Observable.just(1, 3, 5, 7, 9, 7, 5, 3, 1);
   observable.takeFirst(IS_EVEN).subscribe(w);
   verify(w, never()).onNext(anyInt());
   verify(w, times(1)).onComplete();
   verify(w, never()).onError(any(Throwable.class));
 }
예제 #8
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 public void testTakeFirstWithPredicateOfSome() {
   Observable<Integer> observable = Observable.just(1, 3, 5, 4, 6, 3);
   observable.takeFirst(IS_EVEN).subscribe(w);
   verify(w, times(1)).onNext(anyInt());
   verify(w).onNext(4);
   verify(w, times(1)).onComplete();
   verify(w, never()).onError(any(Throwable.class));
 }
예제 #9
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 @Test
 public void testTakeFirstOfSome() {
   Observable<Integer> observable = Observable.just(1, 2, 3);
   observable.take(1).subscribe(w);
   verify(w, times(1)).onNext(anyInt());
   verify(w).onNext(1);
   verify(w, times(1)).onComplete();
   verify(w, never()).onError(any(Throwable.class));
 }
예제 #10
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  @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();
  }
예제 #11
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  @Test
  public void testIgnoreElements() {
    Observable<Integer> observable = Observable.just(1, 2, 3).ignoreElements();

    Subscriber<Object> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, never()).onNext(any(Integer.class));
    verify(observer, never()).onError(any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #12
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  @Test
  public void testMaterializeDematerializeChaining() {
    Observable<Integer> obs = Observable.just(1);
    Observable<Integer> chained = obs.materialize().dematerialize();

    Subscriber<Integer> observer = TestHelper.mockSubscriber();

    chained.subscribe(observer);

    verify(observer, times(1)).onNext(1);
    verify(observer, times(1)).onComplete();
    verify(observer, times(0)).onError(any(Throwable.class));
  }
예제 #13
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 @Test
 public void testTakeWhileToList() {
   final int expectedCount = 3;
   final AtomicInteger count = new AtomicInteger();
   for (int i = 0; i < expectedCount; i++) {
     Observable.just(Boolean.TRUE, Boolean.FALSE)
         .takeWhile(v -> v)
         .toList()
         .doOnNext(booleans -> count.incrementAndGet())
         .subscribe();
   }
   assertEquals(expectedCount, count.get());
 }
예제 #14
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  @Test
  @Ignore("null values are not allowed")
  public void testContainsWithNull() {
    Observable<Boolean> observable = Observable.just("a", "b", null).contains(null);

    Subscriber<Object> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, times(1)).onNext(true);
    verify(observer, never()).onNext(false);
    verify(observer, never()).onError(org.mockito.Matchers.any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #15
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 @Test
 public void testExtend() {
   final TestSubscriber<Object> subscriber = new TestSubscriber<>();
   final Object value = new Object();
   Observable.just(value)
       .to(
           onSubscribe -> {
             onSubscribe.subscribe(subscriber);
             subscriber.assertNoErrors();
             subscriber.assertComplete();
             subscriber.assertValue(value);
             return subscriber.values().get(0);
           });
 }
예제 #16
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  @Test
  public void testContainsWithInexistence() {
    Observable<Boolean> observable =
        Observable.just("a", "b").contains("c"); // FIXME null values are not allowed, removed

    Subscriber<Object> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, times(1)).onNext(false);
    verify(observer, never()).onNext(true);
    verify(observer, never()).onError(org.mockito.Matchers.any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #17
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  @Test
  public void testContains() {
    Observable<Boolean> observable =
        Observable.just("a", "b", "c").contains("b"); // FIXME nulls not allowed, changed to "c"

    Subscriber<Boolean> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, times(1)).onNext(true);
    verify(observer, never()).onNext(false);
    verify(observer, never()).onError(org.mockito.Matchers.any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #18
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  @Test
  public void testCreate() {

    Observable<String> observable = Observable.just("one", "two", "three");

    Subscriber<String> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, times(1)).onNext("one");
    verify(observer, times(1)).onNext("two");
    verify(observer, times(1)).onNext("three");
    verify(observer, never()).onError(any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #19
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  @Test
  public void testOfType() {
    Observable<String> observable = Observable.just(1, "abc", false, 2L).ofType(String.class);

    Subscriber<Object> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, never()).onNext(1);
    verify(observer, times(1)).onNext("abc");
    verify(observer, never()).onNext(false);
    verify(observer, never()).onNext(2L);
    verify(observer, never()).onError(org.mockito.Matchers.any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #20
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  @Test
  public void testCollectToString() {
    String value =
        Observable.just(1, 2, 3)
            .collect(
                StringBuilder::new,
                (sb, v) -> {
                  if (sb.length() > 0) {
                    sb.append("-");
                  }
                  sb.append(v);
                })
            .toBlocking()
            .last()
            .toString();

    assertEquals("1-2-3", value);
  }
예제 #21
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  /**
   * The error from the user provided Observer is not handled by the subscribe method try/catch.
   *
   * <p>It is handled by the AtomicObserver that wraps the provided Observer.
   *
   * <p>Result: Passes (if AtomicObserver functionality exists)
   */
  @Test
  public void testCustomObservableWithErrorInObserverAsynchronous() throws InterruptedException {
    final CountDownLatch latch = new CountDownLatch(1);
    final AtomicInteger count = new AtomicInteger();
    final AtomicReference<Throwable> error = new AtomicReference<>();

    // FIXME custom built???
    Observable.just("1", "2", "three", "4")
        .subscribeOn(Schedulers.newThread())
        .safeSubscribe(
            new Observer<String>() {
              @Override
              public void onComplete() {
                System.out.println("completed");
                latch.countDown();
              }

              @Override
              public void onError(Throwable e) {
                error.set(e);
                System.out.println("error");
                e.printStackTrace();
                latch.countDown();
              }

              @Override
              public void onNext(String v) {
                int num = Integer.parseInt(v);
                System.out.println(num);
                // doSomething(num);
                count.incrementAndGet();
              }
            });

    // wait for async sequence to complete
    latch.await();

    assertEquals(2, count.get());
    assertNotNull(error.get());
    if (!(error.get() instanceof NumberFormatException)) {
      fail("It should be a NumberFormatException");
    }
  }
예제 #22
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  @Test
  public void testCollectToList() {
    Observable<List<Integer>> o =
        Observable.just(1, 2, 3).collect(ArrayList::new, (list, v) -> list.add(v));

    List<Integer> list = o.toBlocking().last();

    assertEquals(3, list.size());
    assertEquals(1, list.get(0).intValue());
    assertEquals(2, list.get(1).intValue());
    assertEquals(3, list.get(2).intValue());

    // test multiple subscribe
    List<Integer> list2 = o.toBlocking().last();

    assertEquals(3, list2.size());
    assertEquals(1, list2.get(0).intValue());
    assertEquals(2, list2.get(1).intValue());
    assertEquals(3, list2.get(2).intValue());
  }
예제 #23
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  @Test
  public void testStartWithWithScheduler() {
    TestScheduler scheduler = new TestScheduler();
    Observable<Integer> observable =
        Observable.just(3, 4).startWith(Arrays.asList(1, 2)).subscribeOn(scheduler);

    Subscriber<Integer> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    scheduler.advanceTimeBy(1, TimeUnit.MILLISECONDS);

    InOrder inOrder = inOrder(observer);
    inOrder.verify(observer, times(1)).onNext(1);
    inOrder.verify(observer, times(1)).onNext(2);
    inOrder.verify(observer, times(1)).onNext(3);
    inOrder.verify(observer, times(1)).onNext(4);
    inOrder.verify(observer, times(1)).onComplete();
    inOrder.verifyNoMoreInteractions();
  }
예제 #24
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  @Test
  public void testOfTypeWithPolymorphism() {
    ArrayList<Integer> l1 = new ArrayList<>();
    l1.add(1);
    LinkedList<Integer> l2 = new LinkedList<>();
    l2.add(2);

    @SuppressWarnings("rawtypes")
    Observable<List> observable = Observable.<Object>just(l1, l2, "123").ofType(List.class);

    Subscriber<Object> observer = TestHelper.mockSubscriber();

    observable.subscribe(observer);

    verify(observer, times(1)).onNext(l1);
    verify(observer, times(1)).onNext(l2);
    verify(observer, never()).onNext("123");
    verify(observer, never()).onError(org.mockito.Matchers.any(Throwable.class));
    verify(observer, times(1)).onComplete();
  }
예제 #25
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 @Test
 public void testAmbWith() {
   TestSubscriber<Integer> ts = new TestSubscriber<>();
   Observable.just(1).ambWith(Observable.just(2)).subscribe(ts);
   ts.assertValue(1);
 }
예제 #26
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 @Test
 public void testConcatWith() {
   TestSubscriber<Integer> ts = new TestSubscriber<>();
   Observable.just(1).concatWith(Observable.just(2)).subscribe(ts);
   ts.assertValues(1, 2);
 }