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Mockrunner is a lightweight framework for unit testing applications in the J2EE environment. It supports servlets, filters, tag classes and Struts actions. It includes a JDBC a JMS and a JCA test framework and can be used to test EJB based applications.
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package com.mockrunner.example.jms;

import javax.jms.JMSException;
import javax.jms.Queue;
import javax.jms.QueueConnectionFactory;

import org.mockejb.TransactionPolicy;

import com.mockrunner.ejb.EJBTestModule;
import com.mockrunner.example.jms.interfaces.PrintSession;
import com.mockrunner.jms.JMSTestCaseAdapter;
import com.mockrunner.mock.jms.MockTextMessage;

/**
 * Example test for {@link PrintSessionBean}. Demonstrates
 * how to deal with EJBs in JMS tests. The sender is a session
 * bean, the receiver is a message driven bean. Please note
 * that you have to deal the the transaction methods of
 * {@link com.mockrunner.ejb.EJBTestModule}, because this example
 * uses a simulated JTA transaction.
 */
public class PrintSessionBeanTest extends JMSTestCaseAdapter
{
    private EJBTestModule ejbModule;
    private PrintSession bean;

    protected void setUp() throws Exception
    {
        super.setUp();
        ejbModule = createEJBTestModule();
        ejbModule.setInterfacePackage("com.mockrunner.example.jms.interfaces");
        ejbModule.deploySessionBean("com/mockrunner/example/PrintSession", PrintSessionBean.class, TransactionPolicy.REQUIRED);
        bean = (PrintSession)ejbModule.createBean("com/mockrunner/example/PrintSession");
        QueueConnectionFactory factory = getJMSMockObjectFactory().getMockQueueConnectionFactory();
        Queue queue = getDestinationManager().createQueue("testQueue");
        ejbModule.deployMessageBean("java:/ConnectionFactory", "queue/testQueue", factory, queue, new PrintMessageDrivenBean());
    }
    
    //The following commented out setUp method is an alternative approach to
    //test a message driven bean. The message bean is not deployed to the
    //mock container but instantiated directly, which means that you cannot 
    //test JTA transactions when *receiving* the message and you cannot use the 
    //MockEJB interceptor framework for the onMessage method.
    //In this test case we only test JTA transactions while *sending* the message,
    //so this approach works quite well.
	/*protected void setUp() throws Exception
    {
        super.setUp();
        ejbModule = createEJBTestModule();
        ejbModule.bindToContext("java:/ConnectionFactory", getJMSMockObjectFactory().getMockQueueConnectionFactory());
        Queue queue = getDestinationManager().createQueue("testQueue");
        ejbModule.bindToContext("queue/testQueue", queue);
        registerTestMessageListenerForQueue("testQueue", new PrintMessageDrivenBean());
        ejbModule.setInterfacePackage("com.mockrunner.example.jms.interfaces");
        ejbModule.deploySessionBean("com/mockrunner/example/PrintSession", PrintSessionBean.class, TransactionPolicy.REQUIRED);
        bean = (PrintSession)ejbModule.createBean("com/mockrunner/example/PrintSession");
    }*/
    
    public void testSuccessfulDelivery() throws Exception
    {
        bean.sendMessage("123");
        ejbModule.verifyCommitted();
        verifyNumberQueueSessions(1);
        verifyNumberQueueSenders(0, "testQueue", 1);
        verifyAllQueueSessionsClosed();
        verifyAllQueueSendersClosed(0);
        verifyQueueConnectionClosed();
        verifyNumberOfCreatedQueueTextMessages(0, 1);
        verifyNumberOfReceivedQueueMessages("testQueue", 1);
        verifyReceivedQueueMessageEquals("testQueue", 0, new MockTextMessage("123"));
        verifyReceivedQueueMessageAcknowledged("testQueue", 0);
    }
    
    public void testDeliveryMoreMessages() throws Exception
    {
        bean.sendMessage("1");
        ejbModule.verifyCommitted();
        bean.sendMessage("2");
        ejbModule.verifyCommitted();
        bean.sendMessage("3");
        ejbModule.verifyCommitted();
        verifyNumberOfReceivedQueueMessages("testQueue", 3);
        verifyAllReceivedQueueMessagesAcknowledged("testQueue");
        verifyReceivedQueueMessageEquals("testQueue", 0, new MockTextMessage("1"));
        verifyReceivedQueueMessageEquals("testQueue", 1, new MockTextMessage("2"));
        verifyReceivedQueueMessageEquals("testQueue", 2, new MockTextMessage("3"));    
    }
    
    public void testFailure() throws Exception
    {
        getJMSMockObjectFactory().getMockQueueConnectionFactory().setJMSException(new JMSException("TestException"));
        bean.sendMessage("1");
        ejbModule.verifyNotCommitted();
        ejbModule.verifyRolledBack();
    }
}