ActiveMQ example source code file (MessageEndpointProxyTest.java)

This example ActiveMQ source code file (MessageEndpointProxyTest.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

an, an, endpointandlistener, exception, exception, expectations, expectations, invalidmessageendpointexception, invalidmessageendpointexception, messageendpointproxy, mockery, no, reflection, resourceexception, test

The ActiveMQ MessageEndpointProxyTest.java source code

/**
 * 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.activemq.ra;

import java.lang.reflect.Method;

import javax.jms.Message;
import javax.jms.MessageListener;
import javax.resource.ResourceException;
import javax.resource.spi.endpoint.MessageEndpoint;

import org.jmock.Expectations;
import org.jmock.Mockery;
import org.jmock.integration.junit4.JMock;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import junit.framework.TestCase;

/**
 * @author <a href="mailto:michael.gaffney@panacya.com">Michael Gaffney 
 */
@RunWith(JMock.class)
public class MessageEndpointProxyTest extends TestCase {

    private MessageEndpoint mockEndpoint;
    private EndpointAndListener mockEndpointAndListener;
    private Message stubMessage;
    private MessageEndpointProxy endpointProxy;
    private Mockery context;
    
    @Before
    public void setUp() {
        context = new Mockery();
        mockEndpoint = context.mock(MessageEndpoint.class);
        context.mock(MessageListener.class);
        mockEndpointAndListener = context.mock(EndpointAndListener.class);
        stubMessage = context.mock(Message.class);
        endpointProxy = new MessageEndpointProxy(mockEndpointAndListener);
    }

    @Test
    public void testInvalidConstruction() {
        try {
            new MessageEndpointProxy(mockEndpoint);
            fail("An exception should have been thrown");
        } catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    @Test
    public void testSuccessfulCallSequence() throws Exception {
        setupBeforeDeliverySuccessful();
        setupOnMessageSuccessful();
        setupAfterDeliverySuccessful();

        doBeforeDeliveryExpectSuccess();
        doOnMessageExpectSuccess();
        doAfterDeliveryExpectSuccess();
    }

    @Test
    public void testBeforeDeliveryFailure() throws Exception {
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).beforeDelivery(with(any(Method.class)));
            will(throwException(new ResourceException()));
        }});
        context.checking(new Expectations() {{
            never (mockEndpointAndListener).onMessage(null);
            never (mockEndpointAndListener).afterDelivery();
        }});
        
        setupExpectRelease();

        try {
            endpointProxy.beforeDelivery(ActiveMQEndpointWorker.ON_MESSAGE_METHOD);
            fail("An exception should have been thrown");
        } catch (Exception e) {
            assertTrue(true);
        }
        doOnMessageExpectInvalidMessageEndpointException();
        doAfterDeliveryExpectInvalidMessageEndpointException();
        
        doFullyDeadCheck();
    }

    @Test
    public void testOnMessageFailure() throws Exception {
        setupBeforeDeliverySuccessful();
     
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).onMessage(with(same(stubMessage)));
            will(throwException(new RuntimeException()));
        }});
        
        setupAfterDeliverySuccessful();

        doBeforeDeliveryExpectSuccess();
        try {
            endpointProxy.onMessage(stubMessage);
            fail("An exception should have been thrown");
        } catch (Exception e) {
            assertTrue(true);
        }
        doAfterDeliveryExpectSuccess();

    }

    @Test
    public void testAfterDeliveryFailure() throws Exception {
        setupBeforeDeliverySuccessful();
        setupOnMessageSuccessful();
        
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).afterDelivery(); will(throwException(new ResourceException()));
        }});

        setupExpectRelease();

        doBeforeDeliveryExpectSuccess();
        doOnMessageExpectSuccess();
        try {
            endpointProxy.afterDelivery();
            fail("An exception should have been thrown");
        } catch (Exception e) {
            assertTrue(true);
        }

        doFullyDeadCheck();
    }

    private void doFullyDeadCheck() {
        doBeforeDeliveryExpectInvalidMessageEndpointException();
        doOnMessageExpectInvalidMessageEndpointException();
        doAfterDeliveryExpectInvalidMessageEndpointException();
        doReleaseExpectInvalidMessageEndpointException();
    }

    private void setupAfterDeliverySuccessful() throws Exception {
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).afterDelivery();
        }});
    }

    private void setupOnMessageSuccessful() {
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).onMessage(with(stubMessage));
        }});
    }

    private void setupBeforeDeliverySuccessful() throws Exception {
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).beforeDelivery(with(any(Method.class)));
        }});
    }

    private void setupExpectRelease() {
        context.checking(new Expectations() {{
            oneOf (mockEndpointAndListener).release();
        }});
    }
    
    private void doBeforeDeliveryExpectSuccess() {
        try {
            endpointProxy.beforeDelivery(ActiveMQEndpointWorker.ON_MESSAGE_METHOD);
        } catch (Exception e) {
            fail("No exception should have been thrown");
        }
    }

    private void doOnMessageExpectSuccess() {
        try {
            endpointProxy.onMessage(stubMessage);
        } catch (Exception e) {
            fail("No exception should have been thrown");
        }
    }

    private void doAfterDeliveryExpectSuccess() {
        try {
            endpointProxy.afterDelivery();
        } catch (Exception e) {
            fail("No exception should have been thrown");
        }
    }

    private void doBeforeDeliveryExpectInvalidMessageEndpointException() {
        try {
            endpointProxy.beforeDelivery(ActiveMQEndpointWorker.ON_MESSAGE_METHOD);
            fail("An InvalidMessageEndpointException should have been thrown");
        } catch (InvalidMessageEndpointException e) {
            assertTrue(true);
        } catch (Exception e) {
            fail("An InvalidMessageEndpointException should have been thrown");
        }
    }

    private void doOnMessageExpectInvalidMessageEndpointException() {
        try {
            endpointProxy.onMessage(stubMessage);
            fail("An InvalidMessageEndpointException should have been thrown");
        } catch (InvalidMessageEndpointException e) {
            assertTrue(true);
        }
    }

    private void doAfterDeliveryExpectInvalidMessageEndpointException() {
        try {
            endpointProxy.afterDelivery();
            fail("An InvalidMessageEndpointException should have been thrown");
        } catch (InvalidMessageEndpointException e) {
            assertTrue(true);
        } catch (Exception e) {
            fail("An InvalidMessageEndpointException should have been thrown");
        }
    }

    private void doReleaseExpectInvalidMessageEndpointException() {
        try {
            endpointProxy.release();
            fail("An InvalidMessageEndpointException should have been thrown");
        } catch (InvalidMessageEndpointException e) {
            assertTrue(true);
        }
    }

    private interface EndpointAndListener extends MessageListener, MessageEndpoint {
    }
}