/**
* 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.flowable;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.*;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.junit.*;
import org.mockito.InOrder;
import org.reactivestreams.*;
import io.reactivex.*;
import io.reactivex.exceptions.*;
import io.reactivex.internal.subscriptions.BooleanSubscription;
import io.reactivex.plugins.RxJavaPlugins;
import io.reactivex.processors.PublishProcessor;
import io.reactivex.schedulers.TestScheduler;
public class FlowableThrottleFirstTest {
private TestScheduler scheduler;
private Scheduler.Worker innerScheduler;
private Subscriber<String> observer;
@Before
public void before() {
scheduler = new TestScheduler();
innerScheduler = scheduler.createWorker();
observer = TestHelper.mockSubscriber();
}
@Test
public void testThrottlingWithCompleted() {
Flowable<String> source = Flowable.unsafeCreate(new Publisher<String>() {
@Override
public void subscribe(Subscriber<? super String> observer) {
observer.onSubscribe(new BooleanSubscription());
publishNext(observer, 100, "one"); // publish as it's first
publishNext(observer, 300, "two"); // skip as it's last within the first 400
publishNext(observer, 900, "three"); // publish
publishNext(observer, 905, "four"); // skip
publishCompleted(observer, 1000); // Should be published as soon as the timeout expires.
}
});
Flowable<String> sampled = source.throttleFirst(400, TimeUnit.MILLISECONDS, scheduler);
sampled.subscribe(observer);
InOrder inOrder = inOrder(observer);
scheduler.advanceTimeTo(1000, TimeUnit.MILLISECONDS);
inOrder.verify(observer, times(1)).onNext("one");
inOrder.verify(observer, times(0)).onNext("two");
inOrder.verify(observer, times(1)).onNext("three");
inOrder.verify(observer, times(0)).onNext("four");
inOrder.verify(observer, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
}
@Test
public void testThrottlingWithError() {
Flowable<String> source = Flowable.unsafeCreate(new Publisher<String>() {
@Override
public void subscribe(Subscriber<? super String> observer) {
observer.onSubscribe(new BooleanSubscription());
Exception error = new TestException();
publishNext(observer, 100, "one"); // Should be published since it is first
publishNext(observer, 200, "two"); // Should be skipped since onError will arrive before the timeout expires
publishError(observer, 300, error); // Should be published as soon as the timeout expires.
}
});
Flowable<String> sampled = source.throttleFirst(400, TimeUnit.MILLISECONDS, scheduler);
sampled.subscribe(observer);
InOrder inOrder = inOrder(observer);
scheduler.advanceTimeTo(400, TimeUnit.MILLISECONDS);
inOrder.verify(observer).onNext("one");
inOrder.verify(observer).onError(any(TestException.class));
inOrder.verifyNoMoreInteractions();
}
private <T> void publishCompleted(final Subscriber<T> observer, long delay) {
innerScheduler.schedule(new Runnable() {
@Override
public void run() {
observer.onComplete();
}
}, delay, TimeUnit.MILLISECONDS);
}
private <T> void publishError(final Subscriber<T> observer, long delay, final Exception error) {
innerScheduler.schedule(new Runnable() {
@Override
public void run() {
observer.onError(error);
}
}, delay, TimeUnit.MILLISECONDS);
}
private <T> void publishNext(final Subscriber<T> observer, long delay, final T value) {
innerScheduler.schedule(new Runnable() {
@Override
public void run() {
observer.onNext(value);
}
}, delay, TimeUnit.MILLISECONDS);
}
@Test
public void testThrottle() {
Subscriber<Integer> observer = TestHelper.mockSubscriber();
TestScheduler s = new TestScheduler();
PublishProcessor<Integer> o = PublishProcessor.create();
o.throttleFirst(500, TimeUnit.MILLISECONDS, s).subscribe(observer);
// send events with simulated time increments
s.advanceTimeTo(0, TimeUnit.MILLISECONDS);
o.onNext(1); // deliver
o.onNext(2); // skip
s.advanceTimeTo(501, TimeUnit.MILLISECONDS);
o.onNext(3); // deliver
s.advanceTimeTo(600, TimeUnit.MILLISECONDS);
o.onNext(4); // skip
s.advanceTimeTo(700, TimeUnit.MILLISECONDS);
o.onNext(5); // skip
o.onNext(6); // skip
s.advanceTimeTo(1001, TimeUnit.MILLISECONDS);
o.onNext(7); // deliver
s.advanceTimeTo(1501, TimeUnit.MILLISECONDS);
o.onComplete();
InOrder inOrder = inOrder(observer);
inOrder.verify(observer).onNext(1);
inOrder.verify(observer).onNext(3);
inOrder.verify(observer).onNext(7);
inOrder.verify(observer).onComplete();
inOrder.verifyNoMoreInteractions();
}
@Test
public void throttleFirstDefaultScheduler() {
Flowable.just(1).throttleFirst(100, TimeUnit.MILLISECONDS)
.test()
.awaitDone(5, TimeUnit.SECONDS)
.assertResult(1);
}
@Test
public void dispose() {
TestHelper.checkDisposed(Flowable.just(1).throttleFirst(1, TimeUnit.DAYS));
}
@Test
public void badSource() {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
new Flowable<Integer>() {
@Override
protected void subscribeActual(Subscriber<? super Integer> observer) {
observer.onSubscribe(new BooleanSubscription());
observer.onNext(1);
observer.onNext(2);
observer.onComplete();
observer.onNext(3);
observer.onError(new TestException());
observer.onComplete();
}
}
.throttleFirst(1, TimeUnit.DAYS)
.test()
.assertResult(1);
TestHelper.assertUndeliverable(errors, 0, TestException.class);
} finally {
RxJavaPlugins.reset();
}
}
@Test
public void backpressureNoRequest() {
Flowable.range(1, 3)
.throttleFirst(1, TimeUnit.MINUTES)
.test(0L)
.assertFailure(MissingBackpressureException.class);
}
}