/*
 * 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.client.topic;

import com.hazelcast.client.test.TestHazelcastFactory;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.ITopic;
import com.hazelcast.core.Message;
import com.hazelcast.core.MessageListener;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import static com.hazelcast.test.HazelcastTestSupport.randomString;
import static org.junit.Assert.assertTrue;

@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class ClientTopicTest {

    private final TestHazelcastFactory hazelcastFactory = new TestHazelcastFactory();

    private HazelcastInstance client;

    @After
    public void tearDown() {
        hazelcastFactory.terminateAll();
    }

    @Before
    public void setup() {
        hazelcastFactory.newHazelcastInstance();
        client = hazelcastFactory.newHazelcastClient();
    }

    @Test
    public void testListener() throws InterruptedException {
        ITopic topic = client.getTopic(randomString());

        final CountDownLatch latch = new CountDownLatch(10);
        MessageListener listener = new MessageListener() {
            public void onMessage(Message message) {
                latch.countDown();
            }
        };
        topic.addMessageListener(listener);

        for (int i = 0; i < 10; i++) {
            topic.publish(i);
        }
        assertTrue(latch.await(20, TimeUnit.SECONDS));
    }

    @Test
    public void testRemoveListener() {
        ITopic topic = client.getTopic(randomString());

        MessageListener listener = new MessageListener() {
            public void onMessage(Message message) {
            }
        };
        String id = topic.addMessageListener(listener);

        assertTrue(topic.removeMessageListener(id));
    }

    @Test(expected = UnsupportedOperationException.class)
    public void testGetLocalTopicStats() throws Exception {
        ITopic topic = client.getTopic(randomString());

        topic.getLocalTopicStats();
    }
}