/*
* 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 io.reactivex.netty.protocol.http;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.junit.Assert;
import org.junit.Test;
import rx.functions.Action0;
import rx.functions.Action1;
import rx.functions.Actions;
import rx.observers.Subscribers;
import rx.schedulers.Schedulers;
import rx.schedulers.TestScheduler;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
/**
* @author Nitesh Kant
*/
public class UnicastContentSubjectTest {
@Test(expected = IllegalStateException.class)
public void testNoSubscriptions() throws Exception {
TestScheduler testScheduler = Schedulers.test();
UnicastContentSubject<String> subject = UnicastContentSubject.create(1, TimeUnit.DAYS, testScheduler);
subject.onNext("Start the timeout now."); // Since the timeout is scheduled only after content arrival.
testScheduler.advanceTimeBy(1, TimeUnit.DAYS);
subject.toBlocking().last(); // Should immediately throw an error.
}
@Test(expected = IllegalStateException.class)
public void testNoSubscriptionsWithOnUnsubscribeAction() throws Exception {
TestScheduler testScheduler = Schedulers.test();
OnUnsubscribeAction onUnsub = new OnUnsubscribeAction();
UnicastContentSubject<String> subject = UnicastContentSubject.create(1, TimeUnit.DAYS, testScheduler,
onUnsub);
subject.onNext("Start the timeout now."); // Since the timeout is scheduled only after content arrival.
testScheduler.advanceTimeBy(1, TimeUnit.DAYS);
Assert.assertTrue("On unsubscribe action not called on dispose.", onUnsub.isCalled());
subject.toBlocking().last(); // Should immediately throw an error.
}
@Test(expected = IllegalStateException.class)
public void testMultiSubscriber() throws Exception {
UnicastContentSubject<Object> subject = UnicastContentSubject.createWithoutNoSubscriptionTimeout();
subject.subscribe(Subscribers.empty());
subject.toBlocking().last();
}
@Test
public void testNoTimeoutPostSubscription() throws Exception {
TestScheduler testScheduler = Schedulers.test();
UnicastContentSubject<String> subject = UnicastContentSubject.create(1, TimeUnit.DAYS, testScheduler);
subject.onNext("Start the timeout now."); // Since the timeout is scheduled only after content arrival.
final AtomicReference<Throwable> errorOnSubscribe = new AtomicReference<Throwable>();
final CountDownLatch latch = new CountDownLatch(1);
subject.subscribe(Actions.empty(), new Action1<Throwable>() {
@Override
public void call(Throwable throwable) {
errorOnSubscribe.set(throwable);
latch.countDown();
}
}, new Action0() {
@Override
public void call() {
latch.countDown();
}
});
testScheduler.advanceTimeBy(1, TimeUnit.DAYS);
subject.onCompleted();
latch.await(1, TimeUnit.MINUTES);
Assert.assertNull("Subscription got an error.", errorOnSubscribe.get());
}
@Test
public void testOnUnsubscribeAction() throws Exception {
OnUnsubscribeAction onUnsubscribeAction = new OnUnsubscribeAction();
UnicastContentSubject.createWithoutNoSubscriptionTimeout(onUnsubscribeAction).subscribe().unsubscribe();
Assert.assertTrue("On unsubscribe action not called.", onUnsubscribeAction.isCalled());
}
@Test
public void testBuffer() throws Exception {
UnicastContentSubject<String> subject = UnicastContentSubject.createWithoutNoSubscriptionTimeout();
final List<String> data = new ArrayList<String>();
data.add("Item1");
data.add("Item2");
//buffer these
for (String item : data) {
subject.onNext(item);
}
subject.onCompleted();
final List<String> items = new ArrayList<String>();
subject.toBlocking().forEach(new Action1<String>() {
@Override
public void call(String item) {
items.add(item);
}
});
Assert.assertEquals("Unexpected onNext calls", data, items);
}
@Test
public void testByteBufRelease() throws Exception {
UnicastContentSubject<ByteBuf> subject = UnicastContentSubject.createWithoutNoSubscriptionTimeout();
ByteBuf buffer = Unpooled.buffer();
Assert.assertEquals("Created byte buffer not retained.", 1, buffer.refCnt());
subject.onNext(buffer);
subject.onCompleted();
final AtomicInteger byteBufRefCnt = new AtomicInteger(-1);
ByteBuf last = subject.doOnNext(new Action1<ByteBuf>() {
@Override
public void call(ByteBuf byteBuf) {
byteBufRefCnt.set(byteBuf.refCnt());
byteBuf.release();// Simulate consumption as ByteBuf refcount is 1 when created.
}
}).toBlocking().last();
Assert.assertEquals("Unexpected ByteBuf ref count when received.", 2, byteBufRefCnt.get());
Assert.assertSame("Unexpected byte buffer received.", buffer, last);
Assert.assertEquals("Byte buffer not released.", 0, last.refCnt());
}
private static class OnUnsubscribeAction implements Action0 {
private volatile boolean called;
public OnUnsubscribeAction() {
}
@Override
public void call() {
called = true;
}
public boolean isCalled() {
return called;
}
}
}