ActiveMQ example source code file (ActiveMQTestCase.java)

This example ActiveMQ source code file (ActiveMQTestCase.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

activemqtestcase, connectionfactory, exception, exception, io, iterator, messageconsumer, messageconsumer, naming, namingexception, net, network, properties, properties, string, string, textmessage, uri, util

The ActiveMQ ActiveMQTestCase.java source code

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   this work for additional information regarding copyright ownership.
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package org.apache.activemq.bugs.amq1095;

import java.io.File;
import java.net.URI;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import junit.framework.Assert;
import junit.framework.TestCase;

import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQTopic;

/**
 * <p>
 * Common functionality for ActiveMQ test cases.
 * </p>
 * 
 * @author Rainer Klute <a
 *         href="mailto:rainer.klute@dp-itsolutions.de"><rainer.klute@dp-itsolutions.de></a>
 * @since 2007-08-10
 * @version $Id: ActiveMQTestCase.java 12 2007-08-14 12:02:02Z rke $
 */
public class ActiveMQTestCase extends TestCase
{
    private Context context;
    private BrokerService broker;
    protected Connection connection;
    protected Destination destination;
    private List<MessageConsumer> consumersToEmpty = new LinkedList();
    protected final long RECEIVE_TIMEOUT = 500;


    /** <p>Constructor
 */
    public ActiveMQTestCase()
    {}
    
    /** <p>Constructor
 
     * @param name the test case's name
     */
    public ActiveMQTestCase(final String name)
    {
        super(name);
    }

    /**
     * <p>Sets up the JUnit testing environment.
     */
    protected void setUp()
    {
        URI uri;
        try
        {
            /* Copy all system properties starting with "java.naming." to the initial context. */
            final Properties systemProperties = System.getProperties();
            final Properties jndiProperties = new Properties();
            for (final Iterator i = systemProperties.keySet().iterator(); i.hasNext();)
            {
                final String key = (String) i.next();
                if (key.startsWith("java.naming.") || key.startsWith("topic.") ||
                    key.startsWith("queue."))
                {
                    final String value = (String) systemProperties.get(key);
                    jndiProperties.put(key, value);
                }
            }
            context = new InitialContext(jndiProperties); 
            uri = new URI("xbean:org/apache/activemq/bugs/amq1095/activemq.xml");
            broker = BrokerFactory.createBroker(uri);
            broker.start();
        }
        catch (Exception ex)
        {
            throw new RuntimeException(ex);
        }

        final ConnectionFactory connectionFactory;
        try
        {
            /* Lookup the connection factory. */
            connectionFactory = (ConnectionFactory) context.lookup("TopicConnectionFactory");

            destination = new ActiveMQTopic("TestTopic");

            /* Create a connection: */
            connection = connectionFactory.createConnection();
            connection.setClientID("sampleClientID");
        }
        catch (JMSException ex1)
        {
            ex1.printStackTrace();
            Assert.fail(ex1.toString());
        }
        catch (NamingException ex2) {
            ex2.printStackTrace();
            Assert.fail(ex2.toString());
        }
        catch (Throwable ex3) {
            ex3.printStackTrace();
            Assert.fail(ex3.toString());
        }
    }


    /**
     * <p>
     * Tear down the testing environment by receiving any messages that might be
     * left in the topic after a failure and shutting down the broker properly.
     * This is quite important for subsequent test cases that assume the topic
     * to be empty.
     * </p>
     */
    protected void tearDown() throws Exception {
        TextMessage msg;
        try {
			for (final Iterator i = consumersToEmpty.iterator(); i.hasNext();)
			{
			    final MessageConsumer consumer = (MessageConsumer) i.next();
			    if (consumer != null)
			        do
			            msg = (TextMessage) consumer.receive(RECEIVE_TIMEOUT);
			        while (msg != null);
			}
		} catch (Exception e) {
		}
        if (connection != null) {
            connection.stop();
        }
        broker.stop();
    }

    protected void registerToBeEmptiedOnShutdown(final MessageConsumer consumer)
    {
        consumersToEmpty.add(consumer);
    }
}