/**
* 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.junit.Assert.assertTrue;
import static org.mockito.Mockito.*;
import java.util.Arrays;
import org.junit.Test;
import rx.Observable;
import rx.Observer;
import rx.Subscriber;
import rx.Subscription;
import rx.observers.TestSubscriber;
import rx.subjects.PublishSubject;
public class OperatorTakeUntilTest {
@Test
@SuppressWarnings("unchecked")
public void testTakeUntil() {
Subscription sSource = mock(Subscription.class);
Subscription sOther = mock(Subscription.class);
TestObservable source = new TestObservable(sSource);
TestObservable other = new TestObservable(sOther);
Observer<String> result = mock(Observer.class);
Observable<String> stringObservable = Observable.create(source).takeUntil(Observable.create(other));
stringObservable.subscribe(result);
source.sendOnNext("one");
source.sendOnNext("two");
other.sendOnNext("three");
source.sendOnNext("four");
source.sendOnCompleted();
other.sendOnCompleted();
verify(result, times(1)).onNext("one");
verify(result, times(1)).onNext("two");
verify(result, times(0)).onNext("three");
verify(result, times(0)).onNext("four");
verify(sSource, times(1)).unsubscribe();
verify(sOther, times(1)).unsubscribe();
}
@Test
@SuppressWarnings("unchecked")
public void testTakeUntilSourceCompleted() {
Subscription sSource = mock(Subscription.class);
Subscription sOther = mock(Subscription.class);
TestObservable source = new TestObservable(sSource);
TestObservable other = new TestObservable(sOther);
Observer<String> result = mock(Observer.class);
Observable<String> stringObservable = Observable.create(source).takeUntil(Observable.create(other));
stringObservable.subscribe(result);
source.sendOnNext("one");
source.sendOnNext("two");
source.sendOnCompleted();
verify(result, times(1)).onNext("one");
verify(result, times(1)).onNext("two");
verify(sSource, times(1)).unsubscribe();
verify(sOther, times(1)).unsubscribe();
}
@Test
@SuppressWarnings("unchecked")
public void testTakeUntilSourceError() {
Subscription sSource = mock(Subscription.class);
Subscription sOther = mock(Subscription.class);
TestObservable source = new TestObservable(sSource);
TestObservable other = new TestObservable(sOther);
Throwable error = new Throwable();
Observer<String> result = mock(Observer.class);
Observable<String> stringObservable = Observable.create(source).takeUntil(Observable.create(other));
stringObservable.subscribe(result);
source.sendOnNext("one");
source.sendOnNext("two");
source.sendOnError(error);
source.sendOnNext("three");
verify(result, times(1)).onNext("one");
verify(result, times(1)).onNext("two");
verify(result, times(0)).onNext("three");
verify(result, times(1)).onError(error);
verify(sSource, times(1)).unsubscribe();
verify(sOther, times(1)).unsubscribe();
}
@Test
@SuppressWarnings("unchecked")
public void testTakeUntilOtherError() {
Subscription sSource = mock(Subscription.class);
Subscription sOther = mock(Subscription.class);
TestObservable source = new TestObservable(sSource);
TestObservable other = new TestObservable(sOther);
Throwable error = new Throwable();
Observer<String> result = mock(Observer.class);
Observable<String> stringObservable = Observable.create(source).takeUntil(Observable.create(other));
stringObservable.subscribe(result);
source.sendOnNext("one");
source.sendOnNext("two");
other.sendOnError(error);
source.sendOnNext("three");
verify(result, times(1)).onNext("one");
verify(result, times(1)).onNext("two");
verify(result, times(0)).onNext("three");
verify(result, times(1)).onError(error);
verify(result, times(0)).onCompleted();
verify(sSource, times(1)).unsubscribe();
verify(sOther, times(1)).unsubscribe();
}
/**
* If the 'other' onCompletes then we unsubscribe from the source and onComplete
*/
@Test
@SuppressWarnings("unchecked")
public void testTakeUntilOtherCompleted() {
Subscription sSource = mock(Subscription.class);
Subscription sOther = mock(Subscription.class);
TestObservable source = new TestObservable(sSource);
TestObservable other = new TestObservable(sOther);
Observer<String> result = mock(Observer.class);
Observable<String> stringObservable = Observable.create(source).takeUntil(Observable.create(other));
stringObservable.subscribe(result);
source.sendOnNext("one");
source.sendOnNext("two");
other.sendOnCompleted();
source.sendOnNext("three");
verify(result, times(1)).onNext("one");
verify(result, times(1)).onNext("two");
verify(result, times(0)).onNext("three");
verify(result, times(1)).onCompleted();
verify(sSource, times(1)).unsubscribe();
verify(sOther, times(1)).unsubscribe(); // unsubscribed since SafeSubscriber unsubscribes after onComplete
}
private static class TestObservable implements Observable.OnSubscribe<String> {
Observer<? super String> observer = null;
Subscription s;
public TestObservable(Subscription s) {
this.s = s;
}
/* used to simulate subscription */
public void sendOnCompleted() {
observer.onCompleted();
}
/* used to simulate subscription */
public void sendOnNext(String value) {
observer.onNext(value);
}
/* used to simulate subscription */
public void sendOnError(Throwable e) {
observer.onError(e);
}
@Override
public void call(Subscriber<? super String> observer) {
this.observer = observer;
observer.add(s);
}
}
@Test
public void testUntilFires() {
PublishSubject<Integer> source = PublishSubject.create();
PublishSubject<Integer> until = PublishSubject.create();
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
source.takeUntil(until).unsafeSubscribe(ts);
assertTrue(source.hasObservers());
assertTrue(until.hasObservers());
source.onNext(1);
ts.assertReceivedOnNext(Arrays.asList(1));
until.onNext(1);
ts.assertReceivedOnNext(Arrays.asList(1));
ts.assertNoErrors();
ts.assertTerminalEvent();
assertFalse("Source still has observers", source.hasObservers());
assertFalse("Until still has observers", until.hasObservers());
assertFalse("TestSubscriber is unsubscribed", ts.isUnsubscribed());
}
@Test
public void testMainCompletes() {
PublishSubject<Integer> source = PublishSubject.create();
PublishSubject<Integer> until = PublishSubject.create();
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
source.takeUntil(until).unsafeSubscribe(ts);
assertTrue(source.hasObservers());
assertTrue(until.hasObservers());
source.onNext(1);
source.onCompleted();
ts.assertReceivedOnNext(Arrays.asList(1));
ts.assertNoErrors();
ts.assertTerminalEvent();
assertFalse("Source still has observers", source.hasObservers());
assertFalse("Until still has observers", until.hasObservers());
assertFalse("TestSubscriber is unsubscribed", ts.isUnsubscribed());
}
@Test
public void testDownstreamUnsubscribes() {
PublishSubject<Integer> source = PublishSubject.create();
PublishSubject<Integer> until = PublishSubject.create();
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
source.takeUntil(until).take(1).unsafeSubscribe(ts);
assertTrue(source.hasObservers());
assertTrue(until.hasObservers());
source.onNext(1);
ts.assertReceivedOnNext(Arrays.asList(1));
ts.assertNoErrors();
ts.assertTerminalEvent();
assertFalse("Source still has observers", source.hasObservers());
assertFalse("Until still has observers", until.hasObservers());
assertFalse("TestSubscriber is unsubscribed", ts.isUnsubscribed());
}
public void testBackpressure() {
PublishSubject<Integer> until = PublishSubject.create();
TestSubscriber<Integer> ts = new TestSubscriber<Integer>() {
@Override
public void onStart() {
requestMore(0);
}
};
Observable.range(1, 10).takeUntil(until).unsafeSubscribe(ts);
assertTrue(until.hasObservers());
ts.requestMore(1);
ts.assertReceivedOnNext(Arrays.asList(1));
ts.assertNoErrors();
assertTrue("TestSubscriber completed", ts.getOnCompletedEvents().isEmpty());
assertFalse("Until still has observers", until.hasObservers());
assertFalse("TestSubscriber is unsubscribed", ts.isUnsubscribed());
}
}