/*
* Copyright 2002-2015 the original author or authors.
*
* 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 org.springframework.integration.endpoint;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.support.AbstractApplicationContext;
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.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import static org.junit.Assert.assertEquals;
/**
* @author Mark Fisher
* @author Iwein Fuld
* @author Artem Bilan
* @since 2.0.0
*/
@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class ProducerAndConsumerAutoStartupTests {
@Autowired
private AbstractApplicationContext context;
@Autowired
private Consumer consumer;
@Test
public void test() throws Exception {
List<Integer> received = new ArrayList<Integer>();
for (int i = 0; i < 3; i++) {
received.add(this.consumer.poll(10000));
}
this.context.stop();
assertEquals(new Integer(1), received.get(0));
assertEquals(new Integer(2), received.get(1));
assertEquals(new Integer(3), received.get(2));
}
static class Counter {
private final AtomicInteger count = new AtomicInteger();
public Integer next() throws InterruptedException {
if (this.count.get() > 2) {
//prevent message overload
return null;
}
return this.count.incrementAndGet();
}
}
static class Consumer {
private final BlockingQueue<Integer> numbers = new LinkedBlockingQueue<Integer>();
public void receive(Integer number) {
this.numbers.add(number);
}
Integer poll(long timeoutInMillis) throws InterruptedException {
return this.numbers.poll(timeoutInMillis, TimeUnit.MILLISECONDS);
}
}
}