/**
* 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.assertEquals;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;
import io.reactivex.annotations.NonNull;
import org.junit.*;
import io.reactivex.*;
import io.reactivex.disposables.*;
import io.reactivex.observers.TestObserver;
import io.reactivex.schedulers.*;
public class ObservableSubscribeOnTest {
@Test(timeout = 2000)
public void testIssue813() throws InterruptedException {
// https://github.com/ReactiveX/RxJava/issues/813
final CountDownLatch scheduled = new CountDownLatch(1);
final CountDownLatch latch = new CountDownLatch(1);
final CountDownLatch doneLatch = new CountDownLatch(1);
TestObserver<Integer> to = new TestObserver<Integer>();
Observable
.unsafeCreate(new ObservableSource<Integer>() {
@Override
public void subscribe(
final Observer<? super Integer> observer) {
observer.onSubscribe(Disposables.empty());
scheduled.countDown();
try {
try {
latch.await();
} catch (InterruptedException e) {
// this means we were unsubscribed (Scheduler shut down and interrupts)
// ... but we'll pretend we are like many Observables that ignore interrupts
}
observer.onComplete();
} catch (Throwable e) {
observer.onError(e);
} finally {
doneLatch.countDown();
}
}
}).subscribeOn(Schedulers.computation()).subscribe(to);
// wait for scheduling
scheduled.await();
// trigger unsubscribe
to.dispose();
latch.countDown();
doneLatch.await();
to.assertNoErrors();
to.assertComplete();
}
@Test
@Ignore("ObservableSource.subscribe can't throw")
public void testThrownErrorHandling() {
TestObserver<String> ts = new TestObserver<String>();
Observable.unsafeCreate(new ObservableSource<String>() {
@Override
public void subscribe(Observer<? super String> s) {
throw new RuntimeException("fail");
}
}).subscribeOn(Schedulers.computation()).subscribe(ts);
ts.awaitTerminalEvent(1000, TimeUnit.MILLISECONDS);
ts.assertTerminated();
}
@Test
public void testOnError() {
TestObserver<String> ts = new TestObserver<String>();
Observable.unsafeCreate(new ObservableSource<String>() {
@Override
public void subscribe(Observer<? super String> s) {
s.onSubscribe(Disposables.empty());
s.onError(new RuntimeException("fail"));
}
}).subscribeOn(Schedulers.computation()).subscribe(ts);
ts.awaitTerminalEvent(1000, TimeUnit.MILLISECONDS);
ts.assertTerminated();
}
public static class SlowScheduler extends Scheduler {
final Scheduler actual;
final long delay;
final TimeUnit unit;
public SlowScheduler() {
this(Schedulers.computation(), 2, TimeUnit.SECONDS);
}
public SlowScheduler(Scheduler actual, long delay, TimeUnit unit) {
this.actual = actual;
this.delay = delay;
this.unit = unit;
}
@NonNull
@Override
public Worker createWorker() {
return new SlowInner(actual.createWorker());
}
private final class SlowInner extends Worker {
private final Scheduler.Worker actualInner;
private SlowInner(Worker actual) {
this.actualInner = actual;
}
@Override
public void dispose() {
actualInner.dispose();
}
@Override
public boolean isDisposed() {
return actualInner.isDisposed();
}
@NonNull
@Override
public Disposable schedule(@NonNull final Runnable action) {
return actualInner.schedule(action, delay, unit);
}
@NonNull
@Override
public Disposable schedule(@NonNull final Runnable action, final long delayTime, @NonNull final TimeUnit delayUnit) {
TimeUnit common = delayUnit.compareTo(unit) < 0 ? delayUnit : unit;
long t = common.convert(delayTime, delayUnit) + common.convert(delay, unit);
return actualInner.schedule(action, t, common);
}
}
}
@Test(timeout = 5000)
public void testUnsubscribeInfiniteStream() throws InterruptedException {
TestObserver<Integer> ts = new TestObserver<Integer>();
final AtomicInteger count = new AtomicInteger();
Observable.unsafeCreate(new ObservableSource<Integer>() {
@Override
public void subscribe(Observer<? super Integer> sub) {
Disposable d = Disposables.empty();
sub.onSubscribe(d);
for (int i = 1; !d.isDisposed(); i++) {
count.incrementAndGet();
sub.onNext(i);
}
}
}).subscribeOn(Schedulers.newThread()).take(10).subscribe(ts);
ts.awaitTerminalEvent(1000, TimeUnit.MILLISECONDS);
ts.dispose();
Thread.sleep(200); // give time for the loop to continue
ts.assertValues(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
assertEquals(10, count.get());
}
@Test
public void cancelBeforeActualSubscribe() {
TestScheduler test = new TestScheduler();
TestObserver<Integer> to = new TestObserver<Integer>();
Observable.just(1).hide()
.subscribeOn(test).subscribe(to);
to.dispose();
test.advanceTimeBy(1, TimeUnit.SECONDS);
to
.assertSubscribed()
.assertNoValues()
.assertNotTerminated();
}
@Test
public void dispose() {
TestHelper.checkDisposed(Observable.just(1).subscribeOn(Schedulers.single()));
}
}