dubbo-samples-callback/src/test/java/org/apache/dubbo/samples/callback/CallbackServiceIT.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.dubbo.samples.callback;

import org.apache.dubbo.samples.callback.api.CallbackService;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

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

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath*:spring/callback-consumer.xml")
public class CallbackServiceIT {
    @Autowired
    @Qualifier("callbackService")
    private CallbackService service;

    @Test
    public void test() throws InterruptedException {
        CountDownLatch latch = new CountDownLatch(1);
        List<String> results = new ArrayList<>();
        service.addListener("foo.bar", msg -> {
            results.add(msg);
            latch.countDown();
        });

        latch.await(5000, TimeUnit.MILLISECONDS);
        Assert.assertFalse(results.isEmpty());
        Assert.assertTrue(results.get(0).startsWith("Changed:"));
    }
}