/**
* Copyright 2014 Netflix, Inc.
*
* 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 rx.internal.operators;
import static org.junit.Assert.assertFalse;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.isA;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import java.util.Arrays;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicBoolean;
import org.junit.Test;
import org.mockito.InOrder;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import rx.Observable;
import rx.Observable.OnSubscribe;
import rx.Observer;
import rx.Subscriber;
import rx.exceptions.TestException;
import rx.functions.Func0;
import rx.functions.Func1;
import rx.observers.TestSubscriber;
import rx.schedulers.Schedulers;
import rx.subjects.PublishSubject;
public class OperatorTimeoutWithSelectorTest {
@Test(timeout = 2000)
public void testTimeoutSelectorNormal1() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return timeout;
}
};
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return timeout;
}
};
Observable<Integer> other = Observable.from(Arrays.asList(100));
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.timeout(firstTimeoutFunc, timeoutFunc, other).subscribe(o);
source.onNext(1);
source.onNext(2);
source.onNext(3);
timeout.onNext(1);
inOrder.verify(o).onNext(1);
inOrder.verify(o).onNext(2);
inOrder.verify(o).onNext(3);
inOrder.verify(o).onNext(100);
inOrder.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testTimeoutSelectorTimeoutFirst() throws InterruptedException {
Observable<Integer> source = Observable.<Integer>never();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return timeout;
}
};
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return timeout;
}
};
Observable<Integer> other = Observable.from(Arrays.asList(100));
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.timeout(firstTimeoutFunc, timeoutFunc, other).subscribe(o);
timeout.onNext(1);
inOrder.verify(o).onNext(100);
inOrder.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testTimeoutSelectorFirstThrows() {
Observable<Integer> source = Observable.<Integer>never();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return timeout;
}
};
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
throw new TestException();
}
};
Observable<Integer> other = Observable.from(Arrays.asList(100));
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
source.timeout(firstTimeoutFunc, timeoutFunc, other).subscribe(o);
verify(o).onError(any(TestException.class));
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testTimeoutSelectorSubsequentThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
throw new TestException();
}
};
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return timeout;
}
};
Observable<Integer> other = Observable.from(Arrays.asList(100));
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.timeout(firstTimeoutFunc, timeoutFunc, other).subscribe(o);
source.onNext(1);
inOrder.verify(o).onNext(1);
inOrder.verify(o).onError(any(TestException.class));
verify(o, never()).onCompleted();
}
@Test
public void testTimeoutSelectorFirstObservableThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return timeout;
}
};
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return Observable.<Integer> error(new TestException());
}
};
Observable<Integer> other = Observable.from(Arrays.asList(100));
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
source.timeout(firstTimeoutFunc, timeoutFunc, other).subscribe(o);
verify(o).onError(any(TestException.class));
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testTimeoutSelectorSubsequentObservableThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return Observable.<Integer> error(new TestException());
}
};
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return timeout;
}
};
Observable<Integer> other = Observable.from(Arrays.asList(100));
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.timeout(firstTimeoutFunc, timeoutFunc, other).subscribe(o);
source.onNext(1);
inOrder.verify(o).onNext(1);
inOrder.verify(o).onError(any(TestException.class));
verify(o, never()).onCompleted();
}
@Test
public void testTimeoutSelectorWithFirstTimeoutFirstAndNoOtherObservable() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return timeout;
}
};
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return PublishSubject.create();
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
source.timeout(firstTimeoutFunc, timeoutFunc).subscribe(o);
timeout.onNext(1);
InOrder inOrder = inOrder(o);
inOrder.verify(o).onError(isA(TimeoutException.class));
inOrder.verifyNoMoreInteractions();
}
@Test
public void testTimeoutSelectorWithTimeoutFirstAndNoOtherObservable() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> timeout = PublishSubject.create();
Func0<Observable<Integer>> firstTimeoutFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return PublishSubject.create();
}
};
Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return timeout;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
source.timeout(firstTimeoutFunc, timeoutFunc).subscribe(o);
source.onNext(1);
timeout.onNext(1);
InOrder inOrder = inOrder(o);
inOrder.verify(o).onNext(1);
inOrder.verify(o).onError(isA(TimeoutException.class));
inOrder.verifyNoMoreInteractions();
}
@Test
public void testTimeoutSelectorWithTimeoutAndOnNextRaceCondition() throws InterruptedException {
// Thread 1 Thread 2
//
// observer.onNext(1)
// start timeout
// unsubscribe timeout in thread 2 start to do some long-time work in "unsubscribe"
// observer.onNext(2)
// timeout.onNext(1)
// "unsubscribe" done
//
//
// In the above case, the timeout operator should ignore "timeout.onNext(1)"
// since "observer" has already seen 2.
final CountDownLatch observerReceivedTwo = new CountDownLatch(1);
final CountDownLatch timeoutEmittedOne = new CountDownLatch(1);
final CountDownLatch observerCompleted = new CountDownLatch(1);
final CountDownLatch enteredTimeoutOne = new CountDownLatch(1);
final AtomicBoolean latchTimeout = new AtomicBoolean(false);
final Func1<Integer, Observable<Integer>> timeoutFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
if (t1 == 1) {
// Force "unsubscribe" run on another thread
return Observable.create(new OnSubscribe<Integer>() {
@Override
public void call(Subscriber<? super Integer> subscriber) {
enteredTimeoutOne.countDown();
// force the timeout message be sent after observer.onNext(2)
while (true) {
try {
if (!observerReceivedTwo.await(30, TimeUnit.SECONDS)) {
// CountDownLatch timeout
// There should be something wrong
latchTimeout.set(true);
}
break;
} catch (InterruptedException e) {
// Since we just want to emulate a busy method,
// we ignore the interrupt signal from Scheduler.
}
}
subscriber.onNext(1);
timeoutEmittedOne.countDown();
}
}).subscribeOn(Schedulers.newThread());
} else {
return PublishSubject.create();
}
}
};
@SuppressWarnings("unchecked")
final Observer<Integer> o = mock(Observer.class);
doAnswer(new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
observerReceivedTwo.countDown();
return null;
}
}).when(o).onNext(2);
doAnswer(new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
observerCompleted.countDown();
return null;
}
}).when(o).onCompleted();
final TestSubscriber<Integer> ts = new TestSubscriber<Integer>(o);
new Thread(new Runnable() {
@Override
public void run() {
PublishSubject<Integer> source = PublishSubject.create();
source.timeout(timeoutFunc, Observable.just(3)).subscribe(ts);
source.onNext(1); // start timeout
try {
if(!enteredTimeoutOne.await(30, TimeUnit.SECONDS)) {
latchTimeout.set(true);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
source.onNext(2); // disable timeout
try {
if(!timeoutEmittedOne.await(30, TimeUnit.SECONDS)) {
latchTimeout.set(true);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
source.onCompleted();
}
}).start();
if(!observerCompleted.await(30, TimeUnit.SECONDS)) {
latchTimeout.set(true);
}
assertFalse("CoundDownLatch timeout", latchTimeout.get());
InOrder inOrder = inOrder(o);
inOrder.verify(o).onNext(1);
inOrder.verify(o).onNext(2);
inOrder.verify(o, never()).onNext(3);
inOrder.verify(o).onCompleted();
inOrder.verifyNoMoreInteractions();
}
}