/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.collection.impl.list;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IList;
import com.hazelcast.core.ItemEvent;
import com.hazelcast.core.ItemListener;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.assertTrue;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class ListListenerTest extends HazelcastTestSupport {
@Test
public void testListener() throws Exception {
final String name = randomString();
final int count = 10;
final int insCount = 4;
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(insCount);
final HazelcastInstance[] instances = factory.newInstances();
ListenerTest listener = new ListenerTest(count);
getList(instances, name).addItemListener(listener, true);
for (int i = 0; i < count; i++) {
getList(instances, name).add("item" + i);
}
for (int i = 0; i < count; i++) {
getList(instances, name).remove("item" + i);
}
assertTrue(listener.latchAdd.await(5, TimeUnit.SECONDS));
assertTrue(listener.latchRemove.await(5, TimeUnit.SECONDS));
}
@Test
public void testListenerRemove() throws Exception {
final String name = randomString();
final int count = 10;
final int insCount = 4;
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(insCount);
final HazelcastInstance[] instances = factory.newInstances();
ListenerTest listener = new ListenerTest(count);
IList list = getList(instances, name);
list.addItemListener(listener, true);
for (int i = 0; i < count; i++) {
list.add("item" + i);
}
for (int i = count - 1; i >= 0; i--) {
list.remove(i);
}
assertTrue(listener.latchAdd.await(5, TimeUnit.SECONDS));
assertTrue(listener.latchRemove.await(5, TimeUnit.SECONDS));
}
private class ListenerTest implements ItemListener {
CountDownLatch latchAdd;
CountDownLatch latchRemove;
ListenerTest(int count) {
latchAdd = new CountDownLatch(count);
latchRemove = new CountDownLatch(count);
}
@Override
public void itemAdded(ItemEvent item) {
latchAdd.countDown();
}
@Override
public void itemRemoved(ItemEvent item) {
latchRemove.countDown();
}
}
private IList getList(HazelcastInstance[] instances, String name) {
final Random rnd = new Random();
return instances[rnd.nextInt(instances.length)].getList(name);
}
}