/**
* Copyright (c) 2016-present, RxJava Contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
* the License for the specific language governing permissions and limitations under the License.
*/
package io.reactivex.internal.operators.observable;
import static org.junit.Assert.*;
import static org.mockito.ArgumentMatchers.*;
import static org.mockito.Mockito.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.*;
import org.mockito.InOrder;
import io.reactivex.*;
import io.reactivex.Observable;
import io.reactivex.Observer;
import io.reactivex.Scheduler.Worker;
import io.reactivex.annotations.NonNull;
import io.reactivex.disposables.*;
import io.reactivex.exceptions.TestException;
import io.reactivex.functions.*;
import io.reactivex.internal.functions.Functions;
import io.reactivex.internal.fuseable.HasUpstreamObservableSource;
import io.reactivex.internal.operators.observable.ObservableReplay.*;
import io.reactivex.observables.ConnectableObservable;
import io.reactivex.observers.TestObserver;
import io.reactivex.plugins.RxJavaPlugins;
import io.reactivex.schedulers.*;
import io.reactivex.subjects.PublishSubject;
public class ObservableReplayTest {
@Test
public void testBufferedReplay() {
PublishSubject<Integer> source = PublishSubject.create();
ConnectableObservable<Integer> co = source.replay(3);
co.connect();
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
source.onNext(2);
source.onNext(3);
inOrder.verify(observer1, times(1)).onNext(1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
source.onNext(4);
source.onComplete();
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
}
@Test
public void testBufferedWindowReplay() {
PublishSubject<Integer> source = PublishSubject.create();
TestScheduler scheduler = new TestScheduler();
ConnectableObservable<Integer> co = source.replay(3, 100, TimeUnit.MILLISECONDS, scheduler);
co.connect();
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
scheduler.advanceTimeBy(10, TimeUnit.MILLISECONDS);
source.onNext(2);
scheduler.advanceTimeBy(10, TimeUnit.MILLISECONDS);
source.onNext(3);
scheduler.advanceTimeBy(10, TimeUnit.MILLISECONDS);
inOrder.verify(observer1, times(1)).onNext(1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
source.onNext(4);
source.onNext(5);
scheduler.advanceTimeBy(90, TimeUnit.MILLISECONDS);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onNext(5);
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onNext(5);
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
}
@Test
public void testWindowedReplay() {
TestScheduler scheduler = new TestScheduler();
PublishSubject<Integer> source = PublishSubject.create();
ConnectableObservable<Integer> co = source.replay(100, TimeUnit.MILLISECONDS, scheduler);
co.connect();
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onNext(2);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onNext(3);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onComplete();
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
inOrder.verify(observer1, times(1)).onNext(1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, never()).onNext(3);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
}
@Test
public void testReplaySelector() {
final Function<Integer, Integer> dbl = new Function<Integer, Integer>() {
@Override
public Integer apply(Integer t1) {
return t1 * 2;
}
};
Function<Observable<Integer>, Observable<Integer>> selector = new Function<Observable<Integer>, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Observable<Integer> t1) {
return t1.map(dbl);
}
};
PublishSubject<Integer> source = PublishSubject.create();
Observable<Integer> co = source.replay(selector);
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
source.onNext(2);
source.onNext(3);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onNext(6);
source.onNext(4);
source.onComplete();
inOrder.verify(observer1, times(1)).onNext(8);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
}
@Test
public void testBufferedReplaySelector() {
final Function<Integer, Integer> dbl = new Function<Integer, Integer>() {
@Override
public Integer apply(Integer t1) {
return t1 * 2;
}
};
Function<Observable<Integer>, Observable<Integer>> selector = new Function<Observable<Integer>, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Observable<Integer> t1) {
return t1.map(dbl);
}
};
PublishSubject<Integer> source = PublishSubject.create();
Observable<Integer> co = source.replay(selector, 3);
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
source.onNext(2);
source.onNext(3);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onNext(6);
source.onNext(4);
source.onComplete();
inOrder.verify(observer1, times(1)).onNext(8);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
}
@Test
public void testWindowedReplaySelector() {
final Function<Integer, Integer> dbl = new Function<Integer, Integer>() {
@Override
public Integer apply(Integer t1) {
return t1 * 2;
}
};
Function<Observable<Integer>, Observable<Integer>> selector = new Function<Observable<Integer>, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Observable<Integer> t1) {
return t1.map(dbl);
}
};
TestScheduler scheduler = new TestScheduler();
PublishSubject<Integer> source = PublishSubject.create();
Observable<Integer> co = source.replay(selector, 100, TimeUnit.MILLISECONDS, scheduler);
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onNext(2);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onNext(3);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onComplete();
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onNext(6);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onError(any(Throwable.class));
}
}
@Test
public void testBufferedReplayError() {
PublishSubject<Integer> source = PublishSubject.create();
ConnectableObservable<Integer> co = source.replay(3);
co.connect();
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
source.onNext(2);
source.onNext(3);
inOrder.verify(observer1, times(1)).onNext(1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
source.onNext(4);
source.onError(new RuntimeException("Forced failure"));
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onError(any(RuntimeException.class));
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onComplete();
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
inOrder.verify(observer1, times(1)).onNext(4);
inOrder.verify(observer1, times(1)).onError(any(RuntimeException.class));
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onComplete();
}
}
@Test
public void testWindowedReplayError() {
TestScheduler scheduler = new TestScheduler();
PublishSubject<Integer> source = PublishSubject.create();
ConnectableObservable<Integer> co = source.replay(100, TimeUnit.MILLISECONDS, scheduler);
co.connect();
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
source.onNext(1);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onNext(2);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onNext(3);
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
source.onError(new RuntimeException("Forced failure"));
scheduler.advanceTimeBy(60, TimeUnit.MILLISECONDS);
inOrder.verify(observer1, times(1)).onNext(1);
inOrder.verify(observer1, times(1)).onNext(2);
inOrder.verify(observer1, times(1)).onNext(3);
inOrder.verify(observer1, times(1)).onError(any(RuntimeException.class));
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onComplete();
}
{
Observer<Object> observer1 = TestHelper.mockObserver();
InOrder inOrder = inOrder(observer1);
co.subscribe(observer1);
inOrder.verify(observer1, never()).onNext(3);
inOrder.verify(observer1, times(1)).onError(any(RuntimeException.class));
inOrder.verifyNoMoreInteractions();
verify(observer1, never()).onComplete();
}
}
@Test
public void testSynchronousDisconnect() {
final AtomicInteger effectCounter = new AtomicInteger();
Observable<Integer> source = Observable.just(1, 2, 3, 4)
.doOnNext(new Consumer<Integer>() {
@Override
public void accept(Integer v) {
effectCounter.incrementAndGet();
System.out.println("Sideeffect #" + v);
}
});
Observable<Integer> result = source.replay(
new Function<Observable<Integer>, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Observable<Integer> o) {
return o.take(2);
}
});
for (int i = 1; i < 3; i++) {
effectCounter.set(0);
System.out.printf("- %d -%n", i);
result.subscribe(new Consumer<Integer>() {
@Override
public void accept(Integer t1) {
System.out.println(t1);
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable t1) {
t1.printStackTrace();
}
},
new Action() {
@Override
public void run() {
System.out.println("Done");
}
});
assertEquals(2, effectCounter.get());
}
}
/*
* test the basic expectation of OperatorMulticast via replay
*/
@SuppressWarnings("unchecked")
@Test
public void testIssue2191_UnsubscribeSource() throws Exception {
// setup mocks
Consumer<Integer> sourceNext = mock(Consumer.class);
Action sourceCompleted = mock(Action.class);
Action sourceUnsubscribed = mock(Action.class);
Observer<Integer> spiedSubscriberBeforeConnect = TestHelper.mockObserver();
Observer<Integer> spiedSubscriberAfterConnect = TestHelper.mockObserver();
// Observable under test
Observable<Integer> source = Observable.just(1,2);
ConnectableObservable<Integer> replay = source
.doOnNext(sourceNext)
.doOnDispose(sourceUnsubscribed)
.doOnComplete(sourceCompleted)
.replay();
replay.subscribe(spiedSubscriberBeforeConnect);
replay.subscribe(spiedSubscriberBeforeConnect);
replay.connect();
replay.subscribe(spiedSubscriberAfterConnect);
replay.subscribe(spiedSubscriberAfterConnect);
verify(spiedSubscriberBeforeConnect, times(2)).onSubscribe((Disposable)any());
verify(spiedSubscriberAfterConnect, times(2)).onSubscribe((Disposable)any());
// verify interactions
verify(sourceNext, times(1)).accept(1);
verify(sourceNext, times(1)).accept(2);
verify(sourceCompleted, times(1)).run();
verifyObserverMock(spiedSubscriberBeforeConnect, 2, 4);
verifyObserverMock(spiedSubscriberAfterConnect, 2, 4);
// verify(sourceUnsubscribed, times(1)).run();
verifyNoMoreInteractions(sourceNext);
verifyNoMoreInteractions(sourceCompleted);
verifyNoMoreInteractions(sourceUnsubscribed);
verifyNoMoreInteractions(spiedSubscriberBeforeConnect);
verifyNoMoreInteractions(spiedSubscriberAfterConnect);
}
/**
* Specifically test interaction with a Scheduler with subscribeOn.
*
* @throws Exception functional interfaces are declared with throws Exception
*/
@SuppressWarnings("unchecked")
@Test
public void testIssue2191_SchedulerUnsubscribe() throws Exception {
// setup mocks
Consumer<Integer> sourceNext = mock(Consumer.class);
Action sourceCompleted = mock(Action.class);
Action sourceUnsubscribed = mock(Action.class);
final TestScheduler mockScheduler = new TestScheduler();
Observer<Integer> mockObserverBeforeConnect = TestHelper.mockObserver();
Observer<Integer> mockObserverAfterConnect = TestHelper.mockObserver();
// Observable under test
ConnectableObservable<Integer> replay = Observable.just(1, 2, 3)
.doOnNext(sourceNext)
.doOnDispose(sourceUnsubscribed)
.doOnComplete(sourceCompleted)
.subscribeOn(mockScheduler).replay();
replay.subscribe(mockObserverBeforeConnect);
replay.connect();
replay.subscribe(mockObserverAfterConnect);
verify(mockObserverBeforeConnect).onSubscribe((Disposable)any());
verify(mockObserverAfterConnect).onSubscribe((Disposable)any());
mockScheduler.advanceTimeBy(1, TimeUnit.SECONDS);
// verify interactions
verify(sourceNext, times(1)).accept(1);
verify(sourceNext, times(1)).accept(2);
verify(sourceNext, times(1)).accept(3);
verify(sourceCompleted, times(1)).run();
verifyObserverMock(mockObserverBeforeConnect, 1, 3);
verifyObserverMock(mockObserverAfterConnect, 1, 3);
// FIXME not supported
// verify(spiedWorker, times(1)).isUnsubscribed();
// FIXME publish calls cancel too
// verify(sourceUnsubscribed, times(1)).run();
verifyNoMoreInteractions(sourceNext);
verifyNoMoreInteractions(sourceCompleted);
verifyNoMoreInteractions(sourceUnsubscribed);
verifyNoMoreInteractions(mockObserverBeforeConnect);
verifyNoMoreInteractions(mockObserverAfterConnect);
}
/**
* Specifically test interaction with a Scheduler with subscribeOn.
*
* @throws Exception functional interfaces are declared with throws Exception
*/
@SuppressWarnings("unchecked")
@Test
public void testIssue2191_SchedulerUnsubscribeOnError() throws Exception {
// setup mocks
Consumer<Integer> sourceNext = mock(Consumer.class);
Action sourceCompleted = mock(Action.class);
Consumer<Throwable> sourceError = mock(Consumer.class);
Action sourceUnsubscribed = mock(Action.class);
final TestScheduler mockScheduler = new TestScheduler();
Observer<Integer> mockObserverBeforeConnect = TestHelper.mockObserver();
Observer<Integer> mockObserverAfterConnect = TestHelper.mockObserver();
// Observable under test
Function<Integer, Integer> mockFunc = mock(Function.class);
IllegalArgumentException illegalArgumentException = new IllegalArgumentException();
when(mockFunc.apply(1)).thenReturn(1);
when(mockFunc.apply(2)).thenThrow(illegalArgumentException);
ConnectableObservable<Integer> replay = Observable.just(1, 2, 3).map(mockFunc)
.doOnNext(sourceNext)
.doOnDispose(sourceUnsubscribed)
.doOnComplete(sourceCompleted)
.doOnError(sourceError)
.subscribeOn(mockScheduler).replay();
replay.subscribe(mockObserverBeforeConnect);
replay.connect();
replay.subscribe(mockObserverAfterConnect);
verify(mockObserverBeforeConnect).onSubscribe((Disposable)any());
verify(mockObserverAfterConnect).onSubscribe((Disposable)any());
mockScheduler.advanceTimeBy(1, TimeUnit.SECONDS);
// verify interactions
verify(sourceNext, times(1)).accept(1);
verify(sourceError, times(1)).accept(illegalArgumentException);
verifyObserver(mockObserverBeforeConnect, 1, 1, illegalArgumentException);
verifyObserver(mockObserverAfterConnect, 1, 1, illegalArgumentException);
// FIXME no longer supported
// verify(spiedWorker, times(1)).isUnsubscribed();
// FIXME publish also calls cancel
// verify(sourceUnsubscribed, times(1)).run();
verifyNoMoreInteractions(sourceNext);
verifyNoMoreInteractions(sourceCompleted);
verifyNoMoreInteractions(sourceError);
verifyNoMoreInteractions(sourceUnsubscribed);
verifyNoMoreInteractions(mockObserverBeforeConnect);
verifyNoMoreInteractions(mockObserverAfterConnect);
}
private static void verifyObserverMock(Observer<Integer> mock, int numSubscriptions, int numItemsExpected) {
verify(mock, times(numItemsExpected)).onNext((Integer) notNull());
verify(mock, times(numSubscriptions)).onComplete();
verifyNoMoreInteractions(mock);
}
private static void verifyObserver(Observer<Integer> mock, int numSubscriptions, int numItemsExpected, Throwable error) {
verify(mock, times(numItemsExpected)).onNext((Integer) notNull());
verify(mock, times(numSubscriptions)).onError(error);
verifyNoMoreInteractions(mock);
}
public static Worker workerSpy(final Disposable mockDisposable) {
return spy(new InprocessWorker(mockDisposable));
}
static class InprocessWorker extends Worker {
private final Disposable mockDisposable;
public boolean unsubscribed;
InprocessWorker(Disposable mockDisposable) {
this.mockDisposable = mockDisposable;
}
@NonNull
@Override
public Disposable schedule(@NonNull Runnable action) {
action.run();
return mockDisposable; // this subscription is returned but discarded
}
@NonNull
@Override
public Disposable schedule(@NonNull Runnable action, long delayTime, @NonNull TimeUnit unit) {
action.run();
return mockDisposable;
}
@Override
public void dispose() {
unsubscribed = true;
}
@Override
public boolean isDisposed() {
return unsubscribed;
}
}
@Test
public void testBoundedReplayBuffer() {
BoundedReplayBuffer<Integer> buf = new BoundedReplayBuffer<Integer>() {
private static final long serialVersionUID = -5182053207244406872L;
@Override
void truncate() {
}
};
buf.addLast(new Node(1));
buf.addLast(new Node(2));
buf.addLast(new Node(3));
buf.addLast(new Node(4));
buf.addLast(new Node(5));
List<Integer> values = new ArrayList<Integer>();
buf.collect(values);
Assert.assertEquals(Arrays.asList(1, 2, 3, 4, 5), values);
buf.removeSome(2);
buf.removeFirst();
buf.removeSome(2);
values.clear();
buf.collect(values);
Assert.assertTrue(values.isEmpty());
buf.addLast(new Node(5));
buf.addLast(new Node(6));
buf.collect(values);
Assert.assertEquals(Arrays.asList(5, 6), values);
}
@Test
public void testTimedAndSizedTruncation() {
TestScheduler test = new TestScheduler();
SizeAndTimeBoundReplayBuffer<Integer> buf = new SizeAndTimeBoundReplayBuffer<Integer>(2, 2000, TimeUnit.MILLISECONDS, test);
List<Integer> values = new ArrayList<Integer>();
buf.next(1);
test.advanceTimeBy(1, TimeUnit.SECONDS);
buf.next(2);
test.advanceTimeBy(1, TimeUnit.SECONDS);
buf.collect(values);
Assert.assertEquals(Arrays.asList(2), values);
buf.next(3);
buf.next(4);
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(3, 4), values);
test.advanceTimeBy(2, TimeUnit.SECONDS);
buf.next(5);
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(5), values);
Assert.assertFalse(buf.hasCompleted());
test.advanceTimeBy(2, TimeUnit.SECONDS);
buf.complete();
values.clear();
buf.collect(values);
Assert.assertTrue(values.isEmpty());
Assert.assertEquals(1, buf.size);
Assert.assertTrue(buf.hasCompleted());
Assert.assertFalse(buf.hasError());
}
@Test
public void testTimedAndSizedTruncationError() {
TestScheduler test = new TestScheduler();
SizeAndTimeBoundReplayBuffer<Integer> buf = new SizeAndTimeBoundReplayBuffer<Integer>(2, 2000, TimeUnit.MILLISECONDS, test);
Assert.assertFalse(buf.hasCompleted());
Assert.assertFalse(buf.hasError());
List<Integer> values = new ArrayList<Integer>();
buf.next(1);
test.advanceTimeBy(1, TimeUnit.SECONDS);
buf.next(2);
test.advanceTimeBy(1, TimeUnit.SECONDS);
buf.collect(values);
Assert.assertEquals(Arrays.asList(2), values);
buf.next(3);
buf.next(4);
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(3, 4), values);
test.advanceTimeBy(2, TimeUnit.SECONDS);
buf.next(5);
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(5), values);
Assert.assertFalse(buf.hasCompleted());
Assert.assertFalse(buf.hasError());
test.advanceTimeBy(2, TimeUnit.SECONDS);
buf.error(new TestException());
values.clear();
buf.collect(values);
Assert.assertTrue(values.isEmpty());
Assert.assertEquals(1, buf.size);
Assert.assertFalse(buf.hasCompleted());
Assert.assertTrue(buf.hasError());
}
@Test
public void testSizedTruncation() {
SizeBoundReplayBuffer<Integer> buf = new SizeBoundReplayBuffer<Integer>(2);
List<Integer> values = new ArrayList<Integer>();
buf.next(1);
buf.next(2);
buf.collect(values);
Assert.assertEquals(Arrays.asList(1, 2), values);
buf.next(3);
buf.next(4);
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(3, 4), values);
buf.next(5);
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(4, 5), values);
Assert.assertFalse(buf.hasCompleted());
buf.complete();
values.clear();
buf.collect(values);
Assert.assertEquals(Arrays.asList(4, 5), values);
Assert.assertEquals(3, buf.size);
Assert.assertTrue(buf.hasCompleted());
Assert.assertFalse(buf.hasError());
}
@Test
public void testColdReplayNoBackpressure() {
Observable<Integer> source = Observable.range(0, 1000).replay().autoConnect();
TestObserver<Integer> ts = new TestObserver<Integer>();
source.subscribe(ts);
ts.assertNoErrors();
ts.assertTerminated();
List<Integer> onNextEvents = ts.values();
assertEquals(1000, onNextEvents.size());
for (int i = 0; i < 1000; i++) {
assertEquals((Integer)i, onNextEvents.get(i));
}
}
@Test
public void testCache() throws InterruptedException {
final AtomicInteger counter = new AtomicInteger();
Observable<String> o = Observable.unsafeCreate(new ObservableSource<String>() {
@Override
public void subscribe(final Observer<? super String> observer) {
observer.onSubscribe(Disposables.empty());
new Thread(new Runnable() {
@Override
public void run() {
counter.incrementAndGet();
System.out.println("published Observable being executed");
observer.onNext("one");
observer.onComplete();
}
}).start();
}
}).replay().autoConnect();
// we then expect the following 2 subscriptions to get that same value
final CountDownLatch latch = new CountDownLatch(2);
// subscribe once
o.subscribe(new Consumer<String>() {
@Override
public void accept(String v) {
assertEquals("one", v);
System.out.println("v: " + v);
latch.countDown();
}
});
// subscribe again
o.subscribe(new Consumer<String>() {
@Override
public void accept(String v) {
assertEquals("one", v);
System.out.println("v: " + v);
latch.countDown();
}
});
if (!latch.await(1000, TimeUnit.MILLISECONDS)) {
fail("subscriptions did not receive values");
}
assertEquals(1, counter.get());
}
@Test
public void testUnsubscribeSource() throws Exception {
Action unsubscribe = mock(Action.class);
Observable<Integer> o = Observable.just(1).doOnDispose(unsubscribe).cache();
o.subscribe();
o.subscribe();
o.subscribe();
verify(unsubscribe, times(1)).run();
}
@Test
public void testTake() {
TestObserver<Integer> ts = new TestObserver<Integer>();
Observable<Integer> cached = Observable.range(1, 100).replay().autoConnect();
cached.take(10).subscribe(ts);
ts.assertNoErrors();
ts.assertTerminated();
ts.assertValues(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
// FIXME no longer assertable
// ts.assertUnsubscribed();
}
@Test
public void testAsync() {
Observable<Integer> source = Observable.range(1, 10000);
for (int i = 0; i < 100; i++) {
TestObserver<Integer> ts1 = new TestObserver<Integer>();
Observable<Integer> cached = source.replay().autoConnect();
cached.observeOn(Schedulers.computation()).subscribe(ts1);
ts1.awaitTerminalEvent(2, TimeUnit.SECONDS);
ts1.assertNoErrors();
ts1.assertTerminated();
assertEquals(10000, ts1.values().size());
TestObserver<Integer> ts2 = new TestObserver<Integer>();
cached.observeOn(Schedulers.computation()).subscribe(ts2);
ts2.awaitTerminalEvent(2, TimeUnit.SECONDS);
ts2.assertNoErrors();
ts2.assertTerminated();
assertEquals(10000, ts2.values().size());
}
}
@Test
public void testAsyncComeAndGo() {
Observable<Long> source = Observable.interval(1, 1, TimeUnit.MILLISECONDS)
.take(1000)
.subscribeOn(Schedulers.io());
Observable<Long> cached = source.replay().autoConnect();
Observable<Long> output = cached.observeOn(Schedulers.computation());
List<TestObserver<Long>> list = new ArrayList<TestObserver<Long>>(100);
for (int i = 0; i < 100; i++) {
TestObserver<Long> ts = new TestObserver<Long>();
list.add(ts);
output.skip(i * 10).take(10).subscribe(ts);
}
List<Long> expected = new ArrayList<Long>();
for (int i = 0; i < 10; i++) {
expected.add((long)(i - 10));
}
int j = 0;
for (TestObserver<Long> ts : list) {
ts.awaitTerminalEvent(3, TimeUnit.SECONDS);
ts.assertNoErrors();
ts.assertTerminated();
for (int i = j * 10; i < j * 10 + 10; i++) {
expected.set(i - j * 10, (long)i);
}
ts.assertValueSequence(expected);
j++;
}
}
@Test
public void testNoMissingBackpressureException() {
final int m = 4 * 1000 * 1000;
Observable<Integer> firehose = Observable.unsafeCreate(new ObservableSource<Integer>() {
@Override
public void subscribe(Observer<? super Integer> t) {
t.onSubscribe(Disposables.empty());
for (int i = 0; i < m; i++) {
t.onNext(i);
}
t.onComplete();
}
});
TestObserver<Integer> ts = new TestObserver<Integer>();
firehose.replay().autoConnect().observeOn(Schedulers.computation()).takeLast(100).subscribe(ts);
ts.awaitTerminalEvent(3, TimeUnit.SECONDS);
ts.assertNoErrors();
ts.assertTerminated();
assertEquals(100, ts.values().size());
}
@Test
public void testValuesAndThenError() {
Observable<Integer> source = Observable.range(1, 10)
.concatWith(Observable.<Integer>error(new TestException()))
.replay().autoConnect();
TestObserver<Integer> ts = new TestObserver<Integer>();
source.subscribe(ts);
ts.assertValues(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
ts.assertNotComplete();
Assert.assertEquals(1, ts.errors().size());
TestObserver<Integer> ts2 = new TestObserver<Integer>();
source.subscribe(ts2);
ts2.assertValues(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
ts2.assertNotComplete();
Assert.assertEquals(1, ts2.errors().size());
}
@Test
@Ignore("onNext should not throw")
public void unsafeChildThrows() {
final AtomicInteger count = new AtomicInteger();
Observable<Integer> source = Observable.range(1, 100)
.doOnNext(new Consumer<Integer>() {
@Override
public void accept(Integer t) {
count.getAndIncrement();
}
})
.replay().autoConnect();
TestObserver<Integer> ts = new TestObserver<Integer>() {
@Override
public void onNext(Integer t) {
throw new TestException();
}
};
source.subscribe(ts);
Assert.assertEquals(100, count.get());
ts.assertNoValues();
ts.assertNotComplete();
ts.assertError(TestException.class);
}
@Test
public void replayScheduler() {
Observable.just(1).replay(Schedulers.computation())
.autoConnect()
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replayTime() {
Observable.just(1).replay(1, TimeUnit.MINUTES)
.autoConnect()
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replaySizeScheduler() {
Observable.just(1).replay(1, Schedulers.computation())
.autoConnect()
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replaySizeAndTime() {
Observable.just(1).replay(1, 1, TimeUnit.MILLISECONDS)
.autoConnect()
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replaySelectorSizeScheduler() {
Observable.just(1).replay(Functions.<Observable<Integer>>identity(), 1, Schedulers.io())
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replaySelectorScheduler() {
Observable.just(1).replay(Functions.<Observable<Integer>>identity(), Schedulers.io())
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replaySelectorTime() {
Observable.just(1).replay(Functions.<Observable<Integer>>identity(), 1, TimeUnit.MINUTES)
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void replayMaxInt() {
Observable.range(1, 2)
.replay(Integer.MAX_VALUE)
.autoConnect()
.test()
.assertResult(1, 2);
}
@Test
public void source() {
Observable<Integer> source = Observable.range(1, 3);
assertSame(source, (((HasUpstreamObservableSource<?>)source.replay())).source());
}
@Test
public void connectRace() {
for (int i = 0; i < 500; i++) {
final ConnectableObservable<Integer> co = Observable.range(1, 3).replay();
Runnable r = new Runnable() {
@Override
public void run() {
co.connect();
}
};
TestHelper.race(r, r);
}
}
@Test
public void subscribeRace() {
for (int i = 0; i < 500; i++) {
final ConnectableObservable<Integer> co = Observable.range(1, 3).replay();
final TestObserver<Integer> to1 = new TestObserver<Integer>();
final TestObserver<Integer> to2 = new TestObserver<Integer>();
Runnable r1 = new Runnable() {
@Override
public void run() {
co.subscribe(to1);
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
co.subscribe(to2);
}
};
TestHelper.race(r1, r2);
}
}
@Test
public void addRemoveRace() {
for (int i = 0; i < 500; i++) {
final ConnectableObservable<Integer> co = Observable.range(1, 3).replay();
final TestObserver<Integer> to1 = new TestObserver<Integer>();
final TestObserver<Integer> to2 = new TestObserver<Integer>();
co.subscribe(to1);
Runnable r1 = new Runnable() {
@Override
public void run() {
to1.cancel();
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
co.subscribe(to2);
}
};
TestHelper.race(r1, r2);
}
}
@Test
public void cancelOnArrival() {
Observable.range(1, 2)
.replay(Integer.MAX_VALUE)
.autoConnect()
.test(true)
.assertEmpty();
}
@Test
public void cancelOnArrival2() {
ConnectableObservable<Integer> co = PublishSubject.<Integer>create()
.replay(Integer.MAX_VALUE);
co.test();
co
.autoConnect()
.test(true)
.assertEmpty();
}
@Test
public void connectConsumerThrows() {
ConnectableObservable<Integer> co = Observable.range(1, 2)
.replay();
try {
co.connect(new Consumer<Disposable>() {
@Override
public void accept(Disposable t) throws Exception {
throw new TestException();
}
});
fail("Should have thrown");
} catch (TestException ex) {
// expected
}
co.test().assertEmpty().cancel();
co.connect();
co.test().assertResult(1, 2);
}
@Test
public void badSource() {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
new Observable<Integer>() {
@Override
protected void subscribeActual(Observer<? super Integer> observer) {
observer.onSubscribe(Disposables.empty());
observer.onError(new TestException("First"));
observer.onNext(1);
observer.onError(new TestException("Second"));
observer.onComplete();
}
}.replay()
.autoConnect()
.test()
.assertFailureAndMessage(TestException.class, "First");
TestHelper.assertUndeliverable(errors, 0, TestException.class, "Second");
} finally {
RxJavaPlugins.reset();
}
}
@Test
public void subscribeOnNextRace() {
for (int i = 0; i < 500; i++) {
final PublishSubject<Integer> ps = PublishSubject.create();
final ConnectableObservable<Integer> co = ps.replay();
final TestObserver<Integer> to1 = new TestObserver<Integer>();
Runnable r1 = new Runnable() {
@Override
public void run() {
co.subscribe(to1);
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
for (int j = 0; j < 1000; j++) {
ps.onNext(j);
}
}
};
TestHelper.race(r1, r2);
}
}
@Test
public void unsubscribeOnNextRace() {
for (int i = 0; i < 500; i++) {
final PublishSubject<Integer> ps = PublishSubject.create();
final ConnectableObservable<Integer> co = ps.replay();
final TestObserver<Integer> to1 = new TestObserver<Integer>();
co.subscribe(to1);
Runnable r1 = new Runnable() {
@Override
public void run() {
to1.dispose();
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
for (int j = 0; j < 1000; j++) {
ps.onNext(j);
}
}
};
TestHelper.race(r1, r2);
}
}
@Test
public void unsubscribeReplayRace() {
for (int i = 0; i < 500; i++) {
final ConnectableObservable<Integer> co = Observable.range(1, 1000).replay();
final TestObserver<Integer> to1 = new TestObserver<Integer>();
co.connect();
Runnable r1 = new Runnable() {
@Override
public void run() {
co.subscribe(to1);
}
};
Runnable r2 = new Runnable() {
@Override
public void run() {
to1.dispose();
}
};
TestHelper.race(r1, r2);
}
}
@Test
public void reentrantOnNext() {
final PublishSubject<Integer> ps = PublishSubject.create();
TestObserver<Integer> to = new TestObserver<Integer>() {
@Override
public void onNext(Integer t) {
if (t == 1) {
ps.onNext(2);
ps.onComplete();
}
super.onNext(t);
}
};
ps.replay().autoConnect().subscribe(to);
ps.onNext(1);
to.assertResult(1, 2);
}
@Test
public void reentrantOnNextBound() {
final PublishSubject<Integer> ps = PublishSubject.create();
TestObserver<Integer> to = new TestObserver<Integer>() {
@Override
public void onNext(Integer t) {
if (t == 1) {
ps.onNext(2);
ps.onComplete();
}
super.onNext(t);
}
};
ps.replay(10).autoConnect().subscribe(to);
ps.onNext(1);
to.assertResult(1, 2);
}
@Test
public void reentrantOnNextCancel() {
final PublishSubject<Integer> ps = PublishSubject.create();
TestObserver<Integer> to = new TestObserver<Integer>() {
@Override
public void onNext(Integer t) {
if (t == 1) {
ps.onNext(2);
cancel();
}
super.onNext(t);
}
};
ps.replay().autoConnect().subscribe(to);
ps.onNext(1);
to.assertValues(1);
}
@Test
public void reentrantOnNextCancelBounded() {
final PublishSubject<Integer> ps = PublishSubject.create();
TestObserver<Integer> to = new TestObserver<Integer>() {
@Override
public void onNext(Integer t) {
if (t == 1) {
ps.onNext(2);
cancel();
}
super.onNext(t);
}
};
ps.replay(10).autoConnect().subscribe(to);
ps.onNext(1);
to.assertValues(1);
}
@Test
public void delayedUpstreamOnSubscribe() {
final Observer<?>[] sub = { null };
new Observable<Integer>() {
@Override
protected void subscribeActual(Observer<? super Integer> s) {
sub[0] = s;
}
}
.replay()
.connect()
.dispose();
Disposable bs = Disposables.empty();
sub[0].onSubscribe(bs);
assertTrue(bs.isDisposed());
}
@Test
public void timedNoOutdatedData() {
TestScheduler scheduler = new TestScheduler();
Observable<Integer> source = Observable.just(1)
.replay(2, TimeUnit.SECONDS, scheduler)
.autoConnect();
source.test().assertResult(1);
source.test().assertResult(1);
scheduler.advanceTimeBy(3, TimeUnit.SECONDS);
source.test().assertResult();
}
}