Example #1
0
  @Test(timeout = 10000)
  public void testOnBackpressureDropSynchronous() {
    for (int i = 0; i < 100; i++) {
      int NUM =
          (int) (Observable.bufferSize() * 1.1); // > 1 so that take doesn't prevent buffer overflow
      AtomicInteger c = new AtomicInteger();
      TestSubscriber<Integer> ts = new TestSubscriber<>();
      firehose(c).onBackpressureDrop().map(SLOW_PASS_THRU).take(NUM).subscribe(ts);
      ts.awaitTerminalEvent();
      ts.assertNoErrors();

      List<Integer> onNextEvents = ts.values();
      assertEquals(NUM, onNextEvents.size());

      Integer lastEvent = onNextEvents.get(NUM - 1);

      System.out.println(
          "testOnBackpressureDrop => Received: "
              + onNextEvents.size()
              + "  Emitted: "
              + c.get()
              + " Last value: "
              + lastEvent);
      // it drop, so we should get some number far higher than what would have sequentially
      // incremented
      assertTrue(NUM - 1 <= lastEvent.intValue());
    }
  }
Example #2
0
  @Test(timeout = 20000)
  public void testOnBackpressureDropWithAction() {
    for (int i = 0; i < 100; i++) {
      final AtomicInteger emitCount = new AtomicInteger();
      final AtomicInteger dropCount = new AtomicInteger();
      final AtomicInteger passCount = new AtomicInteger();
      final int NUM =
          Observable.bufferSize() * 3; // > 1 so that take doesn't prevent buffer overflow
      TestSubscriber<Integer> ts = new TestSubscriber<>();

      firehose(emitCount)
          .onBackpressureDrop(v -> dropCount.incrementAndGet())
          .doOnNext(v -> passCount.incrementAndGet())
          .observeOn(Schedulers.computation())
          .map(SLOW_PASS_THRU)
          .take(NUM)
          .subscribe(ts);

      ts.awaitTerminalEvent();
      ts.assertNoErrors();

      List<Integer> onNextEvents = ts.values();
      Integer lastEvent = onNextEvents.get(NUM - 1);
      System.out.println(
          testName.getMethodName()
              + " => Received: "
              + onNextEvents.size()
              + " Passed: "
              + passCount.get()
              + " Dropped: "
              + dropCount.get()
              + "  Emitted: "
              + emitCount.get()
              + " Last value: "
              + lastEvent);
      assertEquals(NUM, onNextEvents.size());
      // in reality, NUM < passCount
      assertTrue(NUM <= passCount.get());
      // it drop, so we should get some number far higher than what would have sequentially
      // incremented
      assertTrue(NUM - 1 <= lastEvent.intValue());
      assertTrue(0 < dropCount.get());
      assertEquals(emitCount.get(), passCount.get() + dropCount.get());
    }
  }
Example #3
0
  @Test(timeout = 10000)
  public void testOnBackpressureDrop() {
    long t = System.currentTimeMillis();
    for (int i = 0; i < 100; i++) {
      // stop the test if we are getting close to the timeout because slow machines
      // may not get through 100 iterations
      if (System.currentTimeMillis() - t > TimeUnit.SECONDS.toMillis(9)) {
        break;
      }
      int NUM =
          (int) (Observable.bufferSize() * 1.1); // > 1 so that take doesn't prevent buffer overflow
      AtomicInteger c = new AtomicInteger();
      TestSubscriber<Integer> ts = new TestSubscriber<>();
      firehose(c)
          .onBackpressureDrop()
          .observeOn(Schedulers.computation())
          .map(SLOW_PASS_THRU)
          .take(NUM)
          .subscribe(ts);
      ts.awaitTerminalEvent();
      ts.assertNoErrors();

      List<Integer> onNextEvents = ts.values();
      assertEquals(NUM, onNextEvents.size());

      Integer lastEvent = onNextEvents.get(NUM - 1);

      System.out.println(
          "testOnBackpressureDrop => Received: "
              + onNextEvents.size()
              + "  Emitted: "
              + c.get()
              + " Last value: "
              + lastEvent);
      // it drop, so we should get some number far higher than what would have sequentially
      // incremented
      assertTrue(NUM - 1 <= lastEvent.intValue());
    }
  }
Example #4
0
  @Test(timeout = 2000)
  public void testOnBackpressureBuffer() {
    int NUM =
        (int) (Observable.bufferSize() * 1.1); // > 1 so that take doesn't prevent buffer overflow
    AtomicInteger c = new AtomicInteger();
    TestSubscriber<Integer> ts = new TestSubscriber<>();

    firehose(c)
        .takeWhile(t1 -> t1 < 100000)
        .onBackpressureBuffer()
        .observeOn(Schedulers.computation())
        .map(SLOW_PASS_THRU)
        .take(NUM)
        .subscribe(ts);

    ts.awaitTerminalEvent();
    ts.assertNoErrors();
    System.out.println(
        "testOnBackpressureBuffer => Received: " + ts.valueCount() + "  Emitted: " + c.get());
    assertEquals(NUM, ts.valueCount());
    // it buffers, so we should get the right value sequentially
    assertEquals(NUM - 1, ts.values().get(NUM - 1).intValue());
  }