/**
* 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.junit.Assert.assertNotEquals;
import static org.mockito.Mockito.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicReference;
import org.junit.*;
import org.mockito.InOrder;
import io.reactivex.*;
import io.reactivex.Observable;
import io.reactivex.Observer;
import io.reactivex.exceptions.TestException;
import io.reactivex.functions.*;
import io.reactivex.internal.functions.Functions;
import io.reactivex.observers.*;
import io.reactivex.schedulers.*;
import io.reactivex.subjects.PublishSubject;
public class ObservableDelayTest {
private Observer<Long> observer;
private Observer<Long> observer2;
private TestScheduler scheduler;
@Before
public void before() {
observer = TestHelper.mockObserver();
observer2 = TestHelper.mockObserver();
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()).onComplete();
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()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onComplete();
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()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(2L);
verify(observer, times(1)).onComplete();
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()).onComplete();
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)).onComplete();
inOrder.verify(observer, never()).onNext(anyLong());
inOrder.verify(observer, never()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithError() {
Observable<Long> source = Observable.interval(1L, TimeUnit.SECONDS, scheduler)
.map(new Function<Long, Long>() {
@Override
public Long apply(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()).onComplete();
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()).onComplete();
scheduler.advanceTimeTo(5000L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
inOrder.verify(observer, never()).onError(any(Throwable.class));
verify(observer, never()).onComplete();
}
@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()).onComplete();
verify(observer2, never()).onComplete();
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)).onComplete();
inOrder2.verify(observer2, times(1)).onComplete();
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);
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
result.subscribe(o);
inOrder.verify(o, never()).onNext(any());
inOrder.verify(o, never()).onComplete();
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)).onComplete();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelaySubscriptionDisposeBeforeTime() {
Observable<Integer> result = Observable.just(1, 2, 3).delaySubscription(100, TimeUnit.MILLISECONDS, scheduler);
Observer<Object> o = TestHelper.mockObserver();
TestObserver<Object> ts = new TestObserver<Object>(o);
result.subscribe(ts);
ts.dispose();
scheduler.advanceTimeBy(100, TimeUnit.MILLISECONDS);
verify(o, never()).onNext(any());
verify(o, never()).onComplete();
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);
}
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delays.get(t1);
}
};
Observer<Object> o = TestHelper.mockObserver();
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.onComplete();
inOrder.verify(o).onComplete();
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testDelayWithObservableSingleSend1() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
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();
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
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()).onComplete();
}
@Test
public void testDelayWithObservableDelayFunctionThrows() {
PublishSubject<Integer> source = PublishSubject.create();
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
throw new TestException();
}
};
Observer<Object> o = TestHelper.mockObserver();
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()).onComplete();
}
@Test
public void testDelayWithObservableDelayThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
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()).onComplete();
}
@Test
public void testDelayWithObservableSubscriptionNormal() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Callable<Observable<Integer>> subFunc = new Callable<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return delay;
}
};
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
source.delay(Observable.defer(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()).onComplete();
}
@Test
public void testDelayWithObservableSubscriptionFunctionThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Callable<Observable<Integer>> subFunc = new Callable<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
throw new TestException();
}
};
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
source.delay(Observable.defer(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()).onComplete();
}
@Test
public void testDelayWithObservableSubscriptionThrows() {
PublishSubject<Integer> source = PublishSubject.create();
final PublishSubject<Integer> delay = PublishSubject.create();
Callable<Observable<Integer>> subFunc = new Callable<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return delay;
}
};
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
source.delay(Observable.defer(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()).onComplete();
}
@Test
public void testDelayWithObservableEmptyDelayer() {
PublishSubject<Integer> source = PublishSubject.create();
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return Observable.empty();
}
};
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
source.delay(delayFunc).subscribe(o);
source.onNext(1);
source.onComplete();
inOrder.verify(o).onNext(1);
inOrder.verify(o).onComplete();
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();
Callable<Observable<Integer>> subFunc = new Callable<Observable<Integer>>() {
@Override
public Observable<Integer> call() {
return sdelay;
}
};
Function<Integer, Observable<Integer>> delayFunc = new Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return delay;
}
};
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
source.delay(Observable.defer(subFunc), delayFunc).subscribe(o);
source.onNext(1);
sdelay.onComplete();
source.onNext(2);
delay.onNext(2);
inOrder.verify(o).onNext(2);
inOrder.verifyNoMoreInteractions();
verify(o, never()).onError(any(Throwable.class));
verify(o, never()).onComplete();
}
@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);
Function<Long, Observable<Long>> delayFunc = new Function<Long, Observable<Long>>() {
@Override
public Observable<Long> apply(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()).onComplete();
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()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(2400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onComplete();
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()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3400L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, never()).onNext(anyLong());
verify(observer, never()).onComplete();
verify(observer, never()).onError(any(Throwable.class));
scheduler.advanceTimeTo(3500L, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext(2L);
verify(observer, times(1)).onComplete();
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 Function<Integer, Observable<Integer>>() {
@Override
public Observable<Integer> apply(Integer t1) {
return subjects.get(t1);
}
});
Observer<Object> o = TestHelper.mockObserver();
InOrder inOrder = inOrder(o);
result.subscribe(o);
for (int i = 0; i < n; i++) {
source.onNext(i);
}
source.onComplete();
inOrder.verify(o, never()).onNext(anyInt());
inOrder.verify(o, never()).onComplete();
for (int i = n - 1; i >= 0; i--) {
subjects.get(i).onComplete();
inOrder.verify(o).onNext(i);
}
inOrder.verify(o).onComplete();
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 Consumer<Notification<Integer>>() {
@Override
public void accept(Notification<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.assertValues(1, 2, 3, 4, 5);
}
@Test
public void testBackpressureWithTimedDelay() {
TestObserver<Integer> ts = new TestObserver<Integer>();
Observable.range(1, Flowable.bufferSize() * 2)
.delay(100, TimeUnit.MILLISECONDS)
.observeOn(Schedulers.computation())
.map(new Function<Integer, Integer>() {
int c;
@Override
public Integer apply(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(Flowable.bufferSize() * 2, ts.valueCount());
}
@Test
public void testBackpressureWithSubscriptionTimedDelay() {
TestObserver<Integer> ts = new TestObserver<Integer>();
Observable.range(1, Flowable.bufferSize() * 2)
.delaySubscription(100, TimeUnit.MILLISECONDS)
.delay(100, TimeUnit.MILLISECONDS)
.observeOn(Schedulers.computation())
.map(new Function<Integer, Integer>() {
int c;
@Override
public Integer apply(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(Flowable.bufferSize() * 2, ts.valueCount());
}
@Test
public void testBackpressureWithSelectorDelay() {
TestObserver<Integer> ts = new TestObserver<Integer>();
Observable.range(1, Flowable.bufferSize() * 2)
.delay(new Function<Integer, Observable<Long>>() {
@Override
public Observable<Long> apply(Integer i) {
return Observable.timer(100, TimeUnit.MILLISECONDS);
}
})
.observeOn(Schedulers.computation())
.map(new Function<Integer, Integer>() {
int c;
@Override
public Integer apply(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(Flowable.bufferSize() * 2, ts.valueCount());
}
@Test
public void testBackpressureWithSelectorDelayAndSubscriptionDelay() {
TestObserver<Integer> ts = new TestObserver<Integer>();
Observable.range(1, Flowable.bufferSize() * 2)
.delay(Observable.timer(500, TimeUnit.MILLISECONDS)
, new Function<Integer, Observable<Long>>() {
@Override
public Observable<Long> apply(Integer i) {
return Observable.timer(100, TimeUnit.MILLISECONDS);
}
})
.observeOn(Schedulers.computation())
.map(new Function<Integer, Integer>() {
int c;
@Override
public Integer apply(Integer t) {
if (c++ <= 0) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
}
return t;
}
}).subscribe(ts);
ts.awaitTerminalEvent();
ts.assertNoErrors();
assertEquals(Flowable.bufferSize() * 2, ts.valueCount());
}
@Test
public void testErrorRunsBeforeOnNext() {
TestScheduler test = new TestScheduler();
PublishSubject<Integer> ps = PublishSubject.create();
TestObserver<Integer> ts = new TestObserver<Integer>();
ps.delay(1, TimeUnit.SECONDS, test).subscribe(ts);
ps.onNext(1);
test.advanceTimeBy(500, TimeUnit.MILLISECONDS);
ps.onError(new TestException());
test.advanceTimeBy(1, TimeUnit.SECONDS);
ts.assertNoValues();
ts.assertError(TestException.class);
ts.assertNotComplete();
}
@Test
public void testDelaySupplierSimple() {
final PublishSubject<Integer> ps = PublishSubject.create();
Observable<Integer> source = Observable.range(1, 5);
TestObserver<Integer> ts = new TestObserver<Integer>();
source.delaySubscription(ps).subscribe(ts);
ts.assertNoValues();
ts.assertNoErrors();
ts.assertNotComplete();
ps.onNext(1);
ts.assertValues(1, 2, 3, 4, 5);
ts.assertComplete();
ts.assertNoErrors();
}
@Test
public void testDelaySupplierCompletes() {
final PublishSubject<Integer> ps = PublishSubject.create();
Observable<Integer> source = Observable.range(1, 5);
TestObserver<Integer> ts = new TestObserver<Integer>();
source.delaySubscription(ps).subscribe(ts);
ts.assertNoValues();
ts.assertNoErrors();
ts.assertNotComplete();
// FIXME should this complete the source instead of consuming it?
ps.onComplete();
ts.assertValues(1, 2, 3, 4, 5);
ts.assertComplete();
ts.assertNoErrors();
}
@Test
public void testDelaySupplierErrors() {
final PublishSubject<Integer> ps = PublishSubject.create();
Observable<Integer> source = Observable.range(1, 5);
TestObserver<Integer> ts = new TestObserver<Integer>();
source.delaySubscription(ps).subscribe(ts);
ts.assertNoValues();
ts.assertNoErrors();
ts.assertNotComplete();
ps.onError(new TestException());
ts.assertNoValues();
ts.assertNotComplete();
ts.assertError(TestException.class);
}
@Test
public void delayWithTimeDelayError() throws Exception {
Observable.just(1).concatWith(Observable.<Integer>error(new TestException()))
.delay(100, TimeUnit.MILLISECONDS, true)
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertFailure(TestException.class, 1);
}
@Test
public void testOnErrorCalledOnScheduler() throws Exception {
final CountDownLatch latch = new CountDownLatch(1);
final AtomicReference<Thread> thread = new AtomicReference<Thread>();
Observable.<String>error(new Exception())
.delay(0, TimeUnit.MILLISECONDS, Schedulers.newThread())
.doOnError(new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) throws Exception {
thread.set(Thread.currentThread());
latch.countDown();
}
})
.onErrorResumeNext(Observable.<String>empty())
.subscribe();
latch.await();
assertNotEquals(Thread.currentThread(), thread.get());
}
@Test
public void dispose() {
TestHelper.checkDisposed(PublishSubject.create().delay(1, TimeUnit.SECONDS));
TestHelper.checkDisposed(PublishSubject.create().delay(Functions.justFunction(Observable.never())));
}
@Test
public void doubleOnSubscribe() {
TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, ObservableSource<Object>>() {
@Override
public ObservableSource<Object> apply(Observable<Object> o) throws Exception {
return o.delay(1, TimeUnit.SECONDS);
}
});
TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, ObservableSource<Object>>() {
@Override
public ObservableSource<Object> apply(Observable<Object> o) throws Exception {
return o.delay(Functions.justFunction(Observable.never()));
}
});
}
@Test
public void onCompleteFinal() {
TestScheduler scheduler = new TestScheduler();
Observable.empty()
.delay(1, TimeUnit.MILLISECONDS, scheduler)
.subscribe(new DisposableObserver<Object>() {
@Override
public void onNext(Object value) {
}
@Override
public void onError(Throwable e) {
}
@Override
public void onComplete() {
throw new TestException();
}
});
try {
scheduler.advanceTimeBy(1, TimeUnit.SECONDS);
fail("Should have thrown");
} catch (TestException ex) {
// expected
}
}
@Test
public void onErrorFinal() {
TestScheduler scheduler = new TestScheduler();
Observable.error(new TestException())
.delay(1, TimeUnit.MILLISECONDS, scheduler)
.subscribe(new DisposableObserver<Object>() {
@Override
public void onNext(Object value) {
}
@Override
public void onError(Throwable e) {
throw new TestException();
}
@Override
public void onComplete() {
}
});
try {
scheduler.advanceTimeBy(1, TimeUnit.SECONDS);
fail("Should have thrown");
} catch (TestException ex) {
// expected
}
}
}