/*
* Copyright 2002-2013 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.util.Collections;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.GenericMessage;
import static org.junit.Assert.*;
/**
* Unit tests for request and reply operations in {@link AbstractMessagingTemplate}.
*
* @author Rossen Stoyanchev
*
* @see MessageReceivingTemplateTests
*/
public class MessageRequestReplyTemplateTests {
private TestMessagingTemplate template;
private TestMessagePostProcessor postProcessor;
private Map<String, Object> headers;
@Before
public void setup() {
this.template = new TestMessagingTemplate();
this.postProcessor = new TestMessagePostProcessor();
this.headers = Collections.<String, Object>singletonMap("key", "value");
}
@Test
public void sendAndReceive() {
Message<?> requestMessage = new GenericMessage<Object>("request");
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setDefaultDestination("home");
this.template.setReceiveMessage(responseMessage);
Message<?> actual = this.template.sendAndReceive(requestMessage);
assertEquals("home", this.template.destination);
assertSame(requestMessage, this.template.requestMessage);
assertSame(responseMessage, actual);
}
@Test(expected = IllegalStateException.class)
public void sendAndReceiveMissingDestination() {
this.template.sendAndReceive(new GenericMessage<Object>("request"));
}
@Test
public void sendAndReceiveToDestination() {
Message<?> requestMessage = new GenericMessage<Object>("request");
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
Message<?> actual = this.template.sendAndReceive("somewhere", requestMessage);
assertEquals("somewhere", this.template.destination);
assertSame(requestMessage, this.template.requestMessage);
assertSame(responseMessage, actual);
}
@Test
public void convertAndSend() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setDefaultDestination("home");
this.template.setReceiveMessage(responseMessage);
String response = this.template.convertSendAndReceive("request", String.class);
assertEquals("home", this.template.destination);
assertSame("request", this.template.requestMessage.getPayload());
assertSame("response", response);
}
@Test
public void convertAndSendToDestination() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String response = this.template.convertSendAndReceive("somewhere", "request", String.class);
assertEquals("somewhere", this.template.destination);
assertSame("request", this.template.requestMessage.getPayload());
assertSame("response", response);
}
@Test
public void convertAndSendToDestinationWithHeaders() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String response = this.template.convertSendAndReceive("somewhere", "request", this.headers, String.class);
assertEquals("somewhere", this.template.destination);
assertEquals("value", this.template.requestMessage.getHeaders().get("key"));
assertSame("request", this.template.requestMessage.getPayload());
assertSame("response", response);
}
@Test
public void convertAndSendWithPostProcessor() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setDefaultDestination("home");
this.template.setReceiveMessage(responseMessage);
String response = this.template.convertSendAndReceive("request", String.class, this.postProcessor);
assertEquals("home", this.template.destination);
assertSame("request", this.template.requestMessage.getPayload());
assertSame("response", response);
assertSame(this.postProcessor.getMessage(), this.template.requestMessage);
}
@Test
public void convertAndSendToDestinationWithPostProcessor() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String response = this.template.convertSendAndReceive("somewhere", "request", String.class, this.postProcessor);
assertEquals("somewhere", this.template.destination);
assertSame("request", this.template.requestMessage.getPayload());
assertSame("response", response);
assertSame(this.postProcessor.getMessage(), this.template.requestMessage);
}
@Test
public void convertAndSendToDestinationWithHeadersAndPostProcessor() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String response = this.template.convertSendAndReceive("somewhere", "request", this.headers,
String.class, this.postProcessor);
assertEquals("somewhere", this.template.destination);
assertEquals("value", this.template.requestMessage.getHeaders().get("key"));
assertSame("request", this.template.requestMessage.getPayload());
assertSame("response", response);
assertSame(this.postProcessor.getMessage(), this.template.requestMessage);
}
private static class TestMessagingTemplate extends AbstractMessagingTemplate<String> {
private String destination;
private Message<?> requestMessage;
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;
this.requestMessage = requestMessage;
return this.receiveMessage;
}
}
}