Spring Framework example source code file (SimpleMessageConverterTests.java)

This example Spring Framework source code file (SimpleMessageConverterTests.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 - Spring Framework tags/keywords

exception, jmsexception, jmsexception, map, mapmessage, message, mockcontrol, mockcontrol, object, objectmessage, session, session, simplemessageconverter, simplemessageconverter, util

The Spring Framework SimpleMessageConverterTests.java source code

/*
 * Copyright 2002-2006 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.jms.support;

import junit.framework.TestCase;
import org.easymock.ArgumentsMatcher;
import org.easymock.MockControl;
import org.springframework.jms.support.converter.MessageConversionException;
import org.springframework.jms.support.converter.SimpleMessageConverter;
import org.springframework.test.AssertThrows;

import javax.jms.*;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * Unit tests for the {@link SimpleMessageConverter} class.
 *
 * @author Juergen Hoeller
 * @author Rick Evans
 * @since 18.09.2004
 */
public final class SimpleMessageConverterTests extends TestCase {

    public void testStringConversion() throws JMSException {
        MockControl sessionControl = MockControl.createControl(Session.class);
        Session session = (Session) sessionControl.getMock();
        MockControl messageControl = MockControl.createControl(TextMessage.class);
        TextMessage message = (TextMessage) messageControl.getMock();

        String content = "test";

        session.createTextMessage(content);
        sessionControl.setReturnValue(message, 1);
        message.getText();
        messageControl.setReturnValue(content, 1);
        sessionControl.replay();
        messageControl.replay();

        SimpleMessageConverter converter = new SimpleMessageConverter();
        Message msg = converter.toMessage(content, session);
        assertEquals(content, converter.fromMessage(msg));

        sessionControl.verify();
        messageControl.verify();
    }

    public void testByteArrayConversion() throws JMSException {
        MockControl sessionControl = MockControl.createControl(Session.class);
        Session session = (Session) sessionControl.getMock();
        MockControl messageControl = MockControl.createControl(BytesMessage.class);
        BytesMessage message = (BytesMessage) messageControl.getMock();

        byte[] content = "test".getBytes();

        session.createBytesMessage();
        sessionControl.setReturnValue(message, 1);
        message.writeBytes(content);
        messageControl.setVoidCallable(1);
        message.getBodyLength();
        messageControl.setReturnValue(content.length, 1);
        message.readBytes(new byte[content.length]);
        messageControl.setMatcher(new ArgumentsMatcher() {
            public boolean matches(Object[] arg0, Object[] arg1) {
                byte[] one = (byte[]) arg0[0];
                byte[] two = (byte[]) arg1[0];
                return Arrays.equals(one, two);
            }

            public String toString(Object[] arg0) {
                return "bla";
            }
        });
        messageControl.setReturnValue(content.length, 1);
        sessionControl.replay();
        messageControl.replay();

        SimpleMessageConverter converter = new SimpleMessageConverter();
        Message msg = converter.toMessage(content, session);
        assertEquals(content.length, ((byte[]) converter.fromMessage(msg)).length);

        sessionControl.verify();
        messageControl.verify();
    }

    public void testMapConversion() throws JMSException {

        MockControl sessionControl = MockControl.createControl(Session.class);
        Session session = (Session) sessionControl.getMock();
        MockControl messageControl = MockControl.createControl(MapMessage.class);
        MapMessage message = (MapMessage) messageControl.getMock();

        Map content = new HashMap();
        content.put("key1", "value1");
        content.put("key2", "value2");

        session.createMapMessage();
        sessionControl.setReturnValue(message, 1);
        message.setObject("key1", "value1");
        messageControl.setVoidCallable(1);
        message.setObject("key2", "value2");
        messageControl.setVoidCallable(1);
        message.getMapNames();
        messageControl.setReturnValue(Collections.enumeration(content.keySet()));
        message.getObject("key1");
        messageControl.setReturnValue("value1", 1);
        message.getObject("key2");
        messageControl.setReturnValue("value2", 1);

        sessionControl.replay();
        messageControl.replay();

        SimpleMessageConverter converter = new SimpleMessageConverter();
        Message msg = converter.toMessage(content, session);
        assertEquals(content, converter.fromMessage(msg));

        sessionControl.verify();
        messageControl.verify();
    }

    public void testSerializableConversion() throws JMSException {
        MockControl sessionControl = MockControl.createControl(Session.class);
        Session session = (Session) sessionControl.getMock();
        MockControl messageControl = MockControl.createControl(ObjectMessage.class);
        ObjectMessage message = (ObjectMessage) messageControl.getMock();

        Integer content = new Integer(5);

        session.createObjectMessage(content);
        sessionControl.setReturnValue(message, 1);
        message.getObject();
        messageControl.setReturnValue(content, 1);
        sessionControl.replay();
        messageControl.replay();

        SimpleMessageConverter converter = new SimpleMessageConverter();
        Message msg = converter.toMessage(content, session);
        assertEquals(content, converter.fromMessage(msg));

        sessionControl.verify();
        messageControl.verify();
    }

    public void testToMessageThrowsExceptionIfGivenNullObjectToConvert() throws Exception {
        new AssertThrows(MessageConversionException.class) {
            public void test() throws Exception {
                new SimpleMessageConverter().toMessage(null, null);
            }
        }.runTest();
    }

    public void testToMessageThrowsExceptionIfGivenIncompatibleObjectToConvert() throws Exception {
        new AssertThrows(MessageConversionException.class) {
            public void test() throws Exception {
                new SimpleMessageConverter().toMessage(new Object(), null);
            }
        }.runTest();
    }

    public void testToMessageSimplyReturnsMessageAsIsIfSuppliedWithMessage() throws JMSException {

        MockControl sessionControl = MockControl.createControl(Session.class);
        Session session = (Session) sessionControl.getMock();

        MockControl messageControl = MockControl.createControl(ObjectMessage.class);
        ObjectMessage message = (ObjectMessage) messageControl.getMock();

        sessionControl.replay();
        messageControl.replay();

        SimpleMessageConverter converter = new SimpleMessageConverter();
        Message msg = converter.toMessage(message, session);
        assertSame(message, msg);

        sessionControl.verify();
        messageControl.verify();
    }

    public void testFromMessageSimplyReturnsMessageAsIsIfSuppliedWithMessage() throws JMSException {

        MockControl messageControl = MockControl.createControl(Message.class);
        Message message = (Message) messageControl.getMock();

        messageControl.replay();

        SimpleMessageConverter converter = new SimpleMessageConverter();
        Object msg = converter.fromMessage(message);
        assertSame(message, msg);

        messageControl.verify();
    }

    public void testMapConversionWhereMapHasNonStringTypesForKeys() throws JMSException {

        MockControl messageControl = MockControl.createControl(MapMessage.class);
        MapMessage message = (MapMessage) messageControl.getMock();
        messageControl.replay();

        MockControl sessionControl = MockControl.createControl(Session.class);
        final Session session = (Session) sessionControl.getMock();
        session.createMapMessage();
        sessionControl.setReturnValue(message);
        sessionControl.replay();

        final Map content = new HashMap();
        content.put(new Integer(1), "value1");

        final SimpleMessageConverter converter = new SimpleMessageConverter();
        new AssertThrows(MessageConversionException.class) {
            public void test() throws Exception {
                converter.toMessage(content, session);
            }
        }.runTest();

        sessionControl.verify();
    }

    public void testMapConversionWhereMapHasNNullForKey() throws JMSException {

        MockControl messageControl = MockControl.createControl(MapMessage.class);
        MapMessage message = (MapMessage) messageControl.getMock();
        messageControl.replay();

        MockControl sessionControl = MockControl.createControl(Session.class);
        final Session session = (Session) sessionControl.getMock();
        session.createMapMessage();
        sessionControl.setReturnValue(message);
        sessionControl.replay();

        final Map content = new HashMap();
        content.put(null, "value1");

        final SimpleMessageConverter converter = new SimpleMessageConverter();
        new AssertThrows(MessageConversionException.class) {
            public void test() throws Exception {
                converter.toMessage(content, session);
            }
        }.runTest();

        sessionControl.verify();
    }

}