/**
* 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.assertEquals;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.MockitoAnnotations.initMocks;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InOrder;
import org.mockito.Mock;
import rx.Notification;
import rx.Observable;
import rx.Observer;
import rx.Subscription;
import rx.exceptions.TestException;
import rx.functions.Action1;
import rx.functions.Func0;
import rx.functions.Func1;
import rx.internal.util.RxRingBuffer;
import rx.observers.TestObserver;
import rx.observers.TestSubscriber;
import rx.schedulers.Schedulers;
import rx.schedulers.TestScheduler;
import rx.subjects.PublishSubject;
public class OperatorDelayTest {
@Mock
private Observer<Long> observer;
@Mock
private Observer<Long> observer2;
private TestScheduler scheduler;
@Before
public void before() {
initMocks(this);
scheduler = new TestScheduler();
}
@Test
public void testDelay() {
Observable<Long> source = Observable.interval(1L, TimeUnit.SECONDS, scheduler).take(3);
Observable<Long> delayed = source.delay(500L, TimeUnit.MILLISECONDS, scheduler);
delayed.subscribe(observer);
InOrder inOrder = inOrder(observer);
scheduler.advanceTimeTo(1499L, TimeUnit.MILLISECONDS);
verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(1500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(0L);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(1L);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(2L);
verify(observer, times(1)).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testLongDelay() {
Observable<Long> source = Observable.interval(1L, TimeUnit.SECONDS, scheduler).take(3);
Observable<Long> delayed = source.delay(5L, TimeUnit.SECONDS, scheduler);
delayed.subscribe(observer);
InOrder inOrder = inOrder(observer);
scheduler.advanceTimeTo(5999L, TimeUnit.MILLISECONDS);
verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(6000L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(0L);
scheduler.advanceTimeTo(6999L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
scheduler.advanceTimeTo(7000L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(1L);
scheduler.advanceTimeTo(7999L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
scheduler.advanceTimeTo(8000L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(2L);
inOrder.verify(observer, times(1)).onCompleted();
inOrder.verify(observer, never()).onNext(anyLong());
inOrder.verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithError() {
Observable<Long> source = Observable.interval(1L, TimeUnit.SECONDS, scheduler).map(new Func1<Long, Long>() {
@Override
public Long call(Long value) {
if (value == 1L) {
throw new RuntimeException("error!");
}
return value;
}
});
Observable<Long> delayed = source.delay(1L, TimeUnit.SECONDS, scheduler);
delayed.subscribe(observer);
InOrder inOrder = inOrder(observer);
scheduler.advanceTimeTo(1999L, TimeUnit.MILLISECONDS);
verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2000L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onError(any(Throwable.class));
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
scheduler.advanceTimeTo(5000L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
inOrder.verify(observer, never()).onError(any(Throwable.class));
verify(observer, never()).onCompleted();
}
@Test
public void testDelayWithMultipleSubscriptions() {
Observable<Long> source = Observable.interval(1L, TimeUnit.SECONDS, scheduler).take(3);
Observable<Long> delayed = source.delay(500L, TimeUnit.MILLISECONDS, scheduler);
delayed.subscribe(observer);
delayed.subscribe(observer2);
InOrder inOrder = inOrder(observer);
InOrder inOrder2 = inOrder(observer2);
scheduler.advanceTimeTo(1499L, TimeUnit.MILLISECONDS);
verify(observer, never()).onNext(anyLong());
verify(observer2, never()).onNext(anyLong());
scheduler.advanceTimeTo(1500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(0L);
inOrder2.verify(observer2, times(1)).onNext(0L);
scheduler.advanceTimeTo(2499L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
inOrder2.verify(observer2, never()).onNext(anyLong());
scheduler.advanceTimeTo(2500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(1L);
inOrder2.verify(observer2, times(1)).onNext(1L);
verify(observer, never()).onCompleted();
verify(observer2, never()).onCompleted();
scheduler.advanceTimeTo(3500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(2L);
inOrder2.verify(observer2, times(1)).onNext(2L);
inOrder.verify(observer, never()).onNext(anyLong());
inOrder2.verify(observer2, never()).onNext(anyLong());
inOrder.verify(observer, times(1)).onCompleted();
inOrder2.verify(observer2, times(1)).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
verify(observer2, never()).onError(any(Throwable.class));
}
@Test
public void testDelaySubscription() {
Observable<Integer> result = Observable.just(1, 2, 3).delaySubscription(100, TimeUnit.MILLISECONDS, scheduler);
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
result.subscribe(o);
inOrder.verify(o, never()).onNext(any());
inOrder.verify(o, never()).onCompleted();
scheduler.advanceTimeBy(100, TimeUnit.MILLISECONDS);
inOrder.verify(o, times(1)).onNext(1);
inOrder.verify(o, times(1)).onNext(2);
inOrder.verify(o, times(1)).onNext(3);
inOrder.verify(o, times(1)).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelaySubscriptionCancelBeforeTime() {
Observable<Integer> result = Observable.just(1, 2, 3).delaySubscription(100, TimeUnit.MILLISECONDS, scheduler);
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
Subscription s = result.subscribe(o);
s.unsubscribe();
scheduler.advanceTimeBy(100, TimeUnit.MILLISECONDS);
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithObservableNormal1() {
PublishSubject<Integer> source = PublishSubject.create();
final List<PublishSubject<Integer>> delays = new ArrayList<PublishSubject<Integer>>();
final int n = 10;
for (int i = 0; i < n; i++) {
PublishSubject<Integer> delay = PublishSubject.create();
delays.add(delay);
}
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delays.get(t1);
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
for (int i = 0; i < n; i++) {
source.onNext(i);
delays.get(i).onNext(i);
inOrder.verify(o).onNext(i);
}
source.onCompleted();
inOrder.verify(o).onCompleted();
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithObservableSingleSend1() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
source.onNext(1);
delay.onNext(1);
delay.onNext(2);
inOrder.verify(o).onNext(1);
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithObservableSourceThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
source.onNext(1);
source.onError(new TestException());
delay.onNext(1);
inOrder.verify(o).onError(any(TestException.class));
inOrder.verifyNoMoreInteractions();
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableDelayFunctionThrows() {
PublishSubject<Integer> source = PublishSubject.create();
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
throw new TestException();
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
source.onNext(1);
inOrder.verify(o).onError(any(TestException.class));
inOrder.verifyNoMoreInteractions();
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableDelayThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
source.onNext(1);
delay.onError(new TestException());
inOrder.verify(o).onError(any(TestException.class));
inOrder.verifyNoMoreInteractions();
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableSubscriptionNormal() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func0<Observable<Integer>> subFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return delay;
}
};
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(subFunc, delayFunc).subscribe(o);
source.onNext(1);
delay.onNext(1);
source.onNext(2);
delay.onNext(2);
inOrder.verify(o).onNext(2);
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableSubscriptionFunctionThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func0<Observable<Integer>> subFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
throw new TestException();
}
};
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(subFunc, delayFunc).subscribe(o);
source.onNext(1);
delay.onNext(1);
source.onNext(2);
inOrder.verify(o).onError(any(TestException.class));
inOrder.verifyNoMoreInteractions();
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableSubscriptionThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func0<Observable<Integer>> subFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return delay;
}
};
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(subFunc, delayFunc).subscribe(o);
source.onNext(1);
delay.onError(new TestException());
source.onNext(2);
inOrder.verify(o).onError(any(TestException.class));
inOrder.verifyNoMoreInteractions();
verify(o, never()).onNext(any());
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableEmptyDelayer() {
PublishSubject<Integer> source = PublishSubject.create();
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return Observable.empty();
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
source.onNext(1);
source.onCompleted();
inOrder.verify(o).onNext(1);
inOrder.verify(o).onCompleted();
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithObservableSubscriptionRunCompletion() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> sdelay = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Func0<Observable<Integer>> subFunc = new Func0<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return sdelay;
}
};
Func1<Integer, Observable<Integer>> delayFunc = new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return delay;
}
};
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
source.delay(subFunc, delayFunc).subscribe(o);
source.onNext(1);
sdelay.onCompleted();
source.onNext(2);
delay.onNext(2);
inOrder.verify(o).onNext(2);
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
verify(o, never()).onCompleted();
}
@Test
public void testDelayWithObservableAsTimed() {
Observable<Long> source = Observable.interval(1L, TimeUnit.SECONDS, scheduler).take(3);
final Observable<Long> delayer = Observable.timer(500L, TimeUnit.MILLISECONDS, scheduler);
Func1<Long, Observable<Long>> delayFunc = new Func1<Long, Observable<Long>>() {
@Override
public Observable<Long> call(Long t1) {
return delayer;
}
};
Observable<Long> delayed = source.delay(delayFunc);
delayed.subscribe(observer);
InOrder inOrder = inOrder(observer);
scheduler.advanceTimeTo(1499L, TimeUnit.MILLISECONDS);
verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(1500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(0L);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(1L);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(2L);
verify(observer, times(1)).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithObservableReorder() {
int n = 3;
PublishSubject<Integer> source = PublishSubject.create();
final List<PublishSubject<Integer>> subjects = new ArrayList<PublishSubject<Integer>>();
for (int i = 0; i < n; i++) {
subjects.add(PublishSubject.<Integer> create());
}
Observable<Integer> result = source.delay(new Func1<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> call(Integer t1) {
return subjects.get(t1);
}
});
@SuppressWarnings("unchecked")
Observer<Integer> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
result.subscribe(o);
for (int i = 0; i < n; i++) {
source.onNext(i);
}
source.onCompleted();
inOrder.verify(o, never()).onNext(anyInt());
inOrder.verify(o, never()).onCompleted();
for (int i = n - 1; i >= 0; i--) {
subjects.get(i).onCompleted();
inOrder.verify(o).onNext(i);
}
inOrder.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelayEmitsEverything() {
Observable<Integer> source = Observable.range(1, 5);
Observable<Integer> delayed = source.delay(500L, TimeUnit.MILLISECONDS, scheduler);
delayed = delayed.doOnEach(new Action1<Notification<? super Integer>>() {
@Override
public void call(Notification<? super Integer> t1) {
System.out.println(t1);
}
});
TestObserver<Integer> observer = new TestObserver<Integer>();
delayed.subscribe(observer);
// all will be delivered after 500ms since range does not delay between them
scheduler.advanceTimeBy(500L, TimeUnit.MILLISECONDS);
observer.assertReceivedOnNext(Arrays.asList(1, 2, 3, 4, 5));
}
@Test
public void testBackpressureWithTimedDelay() {
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
Observable.range(1, RxRingBuffer.SIZE * 2)
.delay(100, TimeUnit.MILLISECONDS)
.observeOn(Schedulers.computation())
.map(new Func1<Integer, Integer>() {
int c = 0;
@Override
public Integer call(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(RxRingBuffer.SIZE * 2, ts.getOnNextEvents().size());
}
@Test
public void testBackpressureWithSubscriptionTimedDelay() {
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
Observable.range(1, RxRingBuffer.SIZE * 2)
.delaySubscription(100, TimeUnit.MILLISECONDS)
.delay(100, TimeUnit.MILLISECONDS)
.observeOn(Schedulers.computation())
.map(new Func1<Integer, Integer>() {
int c = 0;
@Override
public Integer call(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(RxRingBuffer.SIZE * 2, ts.getOnNextEvents().size());
}
@Test
public void testBackpressureWithSelectorDelay() {
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
Observable.range(1, RxRingBuffer.SIZE * 2)
.delay(new Func1<Integer, Observable<Long>>() {
@Override
public Observable<Long> call(Integer i) {
return Observable.timer(100, TimeUnit.MILLISECONDS);
}
})
.observeOn(Schedulers.computation())
.map(new Func1<Integer, Integer>() {
int c = 0;
@Override
public Integer call(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(RxRingBuffer.SIZE * 2, ts.getOnNextEvents().size());
}
@Test
public void testBackpressureWithSelectorDelayAndSubscriptionDelay() {
TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
Observable.range(1, RxRingBuffer.SIZE * 2)
.delay(new Func0<Observable<Long>>() {
@Override
public Observable<Long> call() {
return Observable.timer(500, TimeUnit.MILLISECONDS);
}
}, new Func1<Integer, Observable<Long>>() {
@Override
public Observable<Long> call(Integer i) {
return Observable.timer(100, TimeUnit.MILLISECONDS);
}
})
.observeOn(Schedulers.computation())
.map(new Func1<Integer, Integer>() {
int c = 0;
@Override
public Integer call(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(RxRingBuffer.SIZE * 2, ts.getOnNextEvents().size());
}
}