/*
* Copyright 2002-2014 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.messaging.core;
import java.io.Writer;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.core.convert.ConversionFailedException;
import org.springframework.messaging.Message;
import org.springframework.messaging.converter.GenericMessageConverter;
import org.springframework.messaging.converter.MessageConversionException;
import org.springframework.messaging.support.GenericMessage;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
/**
* Unit tests for receiving operations in {@link AbstractMessagingTemplate}.
*
* @author Rossen Stoyanchev
* @see MessageRequestReplyTemplateTests
*/
public class MessageReceivingTemplateTests {
@Rule
public final ExpectedException thrown = ExpectedException.none();
private TestMessagingTemplate template;
@Before
public void setup() {
this.template = new TestMessagingTemplate();
}
@Test
public void receive() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setDefaultDestination("home");
this.template.setReceiveMessage(expected);
Message<?> actual = this.template.receive();
assertEquals("home", this.template.destination);
assertSame(expected, actual);
}
@Test(expected = IllegalStateException.class)
public void receiveMissingDefaultDestination() {
this.template.receive();
}
@Test
public void receiveFromDestination() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setReceiveMessage(expected);
Message<?> actual = this.template.receive("somewhere");
assertEquals("somewhere", this.template.destination);
assertSame(expected, actual);
}
@Test
public void receiveAndConvert() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setDefaultDestination("home");
this.template.setReceiveMessage(expected);
String payload = this.template.receiveAndConvert(String.class);
assertEquals("home", this.template.destination);
assertSame("payload", payload);
}
@Test
public void receiveAndConvertFromDestination() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setReceiveMessage(expected);
String payload = this.template.receiveAndConvert("somewhere", String.class);
assertEquals("somewhere", this.template.destination);
assertSame("payload", payload);
}
@Test
public void receiveAndConvertFailed() {
Message<?> expected = new GenericMessage<Object>("not a number test");
this.template.setReceiveMessage(expected);
this.template.setMessageConverter(new GenericMessageConverter());
thrown.expect(MessageConversionException.class);
thrown.expectCause(isA(ConversionFailedException.class));
this.template.receiveAndConvert("somewhere", Integer.class);
}
@Test
public void receiveAndConvertNoConverter() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setDefaultDestination("home");
this.template.setReceiveMessage(expected);
this.template.setMessageConverter(new GenericMessageConverter());
try {
this.template.receiveAndConvert(Writer.class);
}
catch (MessageConversionException ex) {
assertTrue("Invalid exception message '" + ex.getMessage() + "'", ex.getMessage().contains("payload"));
assertSame(expected, ex.getFailedMessage());
}
}
private static class TestMessagingTemplate extends AbstractMessagingTemplate<String> {
private String destination;
private Message<?> receiveMessage;
private void setReceiveMessage(Message<?> receiveMessage) {
this.receiveMessage = receiveMessage;
}
@Override
protected void doSend(String destination, Message<?> message) {
}
@Override
protected Message<?> doReceive(String destination) {
this.destination = destination;
return this.receiveMessage;
}
@Override
protected Message<?> doSendAndReceive(String destination, Message<?> requestMessage) {
this.destination = destination;
return null;
}
}
}