@Ignore("Non-positive requests are relayed to the plugin and is a no-op otherwise")
@Test
public void testNegativeRequestThrowsIllegalArgumentException() throws InterruptedException {
final CountDownLatch latch = new CountDownLatch(1);
final AtomicReference<Throwable> exception = new AtomicReference<>();
Observable.just(1, 2, 3, 4)
.subscribe(
new Observer<Integer>() {
@Override
public void onStart() {
request(1);
}
@Override
public void onComplete() {}
@Override
public void onError(Throwable e) {
exception.set(e);
latch.countDown();
}
@Override
public void onNext(Integer t) {
request(-1);
request(1);
}
});
Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
Assert.assertTrue(exception.get() instanceof IllegalArgumentException);
}
@Test
public void testOnStartRequestsAreAdditiveAndOverflowBecomesMaxValue() {
final List<Integer> list = new ArrayList<>();
Observable.just(1, 2, 3, 4, 5)
.subscribe(
new Observer<Integer>() {
@Override
public void onStart() {
request(2);
request(Long.MAX_VALUE - 1);
}
@Override
public void onComplete() {}
@Override
public void onError(Throwable e) {}
@Override
public void onNext(Integer t) {
list.add(t);
}
});
assertEquals(Arrays.asList(1, 2, 3, 4, 5), list);
}
@Test
public void testOnStartCalledOnceViaUnsafeSubscribe() {
final AtomicInteger c = new AtomicInteger();
Observable.just(1, 2, 3, 4)
.take(2)
.unsafeSubscribe(
new Observer<Integer>() {
@Override
public void onStart() {
c.incrementAndGet();
request(1);
}
@Override
public void onComplete() {}
@Override
public void onError(Throwable e) {}
@Override
public void onNext(Integer t) {
request(1);
}
});
assertEquals(1, c.get());
}
@Test
public void testRequestToObservable() {
TestSubscriber<Integer> ts = new TestSubscriber<>();
ts.request(3);
final AtomicLong requested = new AtomicLong();
Observable.<Integer>create(
s ->
s.onSubscribe(
new Subscription() {
@Override
public void request(long n) {
requested.set(n);
}
@Override
public void cancel() {}
}))
.subscribe(ts);
assertEquals(3, requested.get());
}
@Test
public void testOnStartCalledOnceViaLift() {
final AtomicInteger c = new AtomicInteger();
Observable.just(1, 2, 3, 4)
.lift(
new Operator<Integer, Integer>() {
@Override
public Subscriber<? super Integer> apply(final Subscriber<? super Integer> child) {
return new Observer<Integer>() {
@Override
public void onStart() {
c.incrementAndGet();
request(1);
}
@Override
public void onComplete() {
child.onComplete();
}
@Override
public void onError(Throwable e) {
child.onError(e);
}
@Override
public void onNext(Integer t) {
child.onNext(t);
request(1);
}
};
}
})
.subscribe();
assertEquals(1, c.get());
}
@Test
public void testRequestThroughTakeWhereRequestIsSmallerThanTake() {
TestSubscriber<Integer> ts = new TestSubscriber<>((Long) null);
ts.request(3);
final AtomicLong requested = new AtomicLong();
Observable.<Integer>create(
s ->
s.onSubscribe(
new Subscription() {
@Override
public void request(long n) {
requested.set(n);
}
@Override
public void cancel() {}
}))
.take(10)
.subscribe(ts);
assertEquals(3, requested.get());
}
@Test
public void testRequestThroughTakeThatReducesRequest() {
TestSubscriber<Integer> ts = new TestSubscriber<>((Long) null);
ts.request(3);
final AtomicLong requested = new AtomicLong();
Observable.<Integer>create(
s ->
s.onSubscribe(
new Subscription() {
@Override
public void request(long n) {
requested.set(n);
}
@Override
public void cancel() {}
}))
.take(2)
.subscribe(ts);
// FIXME the take now requests Long.MAX_PATH if downstream requests at least the limit
assertEquals(Long.MAX_VALUE, requested.get());
}