/*
* 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.HashMap;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.ExecutorSubscribableChannel;
import org.springframework.messaging.support.GenericMessage;
import static org.junit.Assert.*;
/**
* Unit tests for {@link AbstractDestinationResolvingMessagingTemplate}.
*
* @author Rossen Stoyanchev
*/
public class DestinationResolvingMessagingTemplateTests {
private TestDestinationResolvingMessagingTemplate template;
private ExecutorSubscribableChannel myChannel;
private Map<String, Object> headers;
private TestMessagePostProcessor postProcessor;
@Before
public void setup() {
TestMessageChannelDestinationResolver resolver = new TestMessageChannelDestinationResolver();
this.myChannel = new ExecutorSubscribableChannel();
resolver.registerMessageChannel("myChannel", this.myChannel);
this.template = new TestDestinationResolvingMessagingTemplate();
this.template.setDestinationResolver(resolver);
this.headers = Collections.<String, Object>singletonMap("key", "value");
this.postProcessor = new TestMessagePostProcessor();
}
@Test
public void send() {
Message<?> message = new GenericMessage<Object>("payload");
this.template.send("myChannel", message);
assertSame(this.myChannel, this.template.messageChannel);
assertSame(message, this.template.message);
}
@Test(expected = IllegalStateException.class)
public void sendNoDestinationResolver() {
TestDestinationResolvingMessagingTemplate template = new TestDestinationResolvingMessagingTemplate();
template.send("myChannel", new GenericMessage<Object>("payload"));
}
@Test
public void convertAndSendPayload() {
this.template.convertAndSend("myChannel", "payload");
assertSame(this.myChannel, this.template.messageChannel);
assertNotNull(this.template.message);
assertSame("payload", this.template.message.getPayload());
}
@Test
public void convertAndSendPayloadAndHeaders() {
this.template.convertAndSend("myChannel", "payload", this.headers);
assertSame(this.myChannel, this.template.messageChannel);
assertNotNull(this.template.message);
assertEquals("value", this.template.message.getHeaders().get("key"));
assertEquals("payload", this.template.message.getPayload());
}
@Test
public void convertAndSendPayloadWithPostProcessor() {
this.template.convertAndSend("myChannel", "payload", this.postProcessor);
assertSame(this.myChannel, this.template.messageChannel);
assertNotNull(this.template.message);
assertEquals("payload", this.template.message.getPayload());
assertNotNull(this.postProcessor.getMessage());
assertSame(this.postProcessor.getMessage(), this.template.message);
}
@Test
public void convertAndSendPayloadAndHeadersWithPostProcessor() {
this.template.convertAndSend("myChannel", "payload", this.headers, this.postProcessor);
assertSame(this.myChannel, this.template.messageChannel);
assertNotNull(this.template.message);
assertEquals("value", this.template.message.getHeaders().get("key"));
assertEquals("payload", this.template.message.getPayload());
assertNotNull(this.postProcessor.getMessage());
assertSame(this.postProcessor.getMessage(), this.template.message);
}
@Test
public void receive() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setReceiveMessage(expected);
Message<?> actual = this.template.receive("myChannel");
assertSame(expected, actual);
assertSame(this.myChannel, this.template.messageChannel);
}
@Test
public void receiveAndConvert() {
Message<?> expected = new GenericMessage<Object>("payload");
this.template.setReceiveMessage(expected);
String payload = this.template.receiveAndConvert("myChannel", String.class);
assertEquals("payload", payload);
assertSame(this.myChannel, this.template.messageChannel);
}
@Test
public void sendAndReceive() {
Message<?> requestMessage = new GenericMessage<Object>("request");
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
Message<?> actual = this.template.sendAndReceive("myChannel", requestMessage);
assertEquals(requestMessage, this.template.message);
assertSame(responseMessage, actual);
assertSame(this.myChannel, this.template.messageChannel);
}
@Test
public void convertSendAndReceive() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String actual = this.template.convertSendAndReceive("myChannel", "request", String.class);
assertEquals("request", this.template.message.getPayload());
assertSame("response", actual);
assertSame(this.myChannel, this.template.messageChannel);
}
@Test
public void convertSendAndReceiveWithHeaders() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String actual = this.template.convertSendAndReceive("myChannel", "request", this.headers, String.class);
assertEquals("value", this.template.message.getHeaders().get("key"));
assertEquals("request", this.template.message.getPayload());
assertSame("response", actual);
assertSame(this.myChannel, this.template.messageChannel);
}
@Test
public void convertSendAndReceiveWithPostProcessor() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String actual = this.template.convertSendAndReceive("myChannel", "request", String.class, this.postProcessor);
assertEquals("request", this.template.message.getPayload());
assertSame("request", this.postProcessor.getMessage().getPayload());
assertSame("response", actual);
assertSame(this.myChannel, this.template.messageChannel);
}
@Test
public void convertSendAndReceiveWithHeadersAndPostProcessor() {
Message<?> responseMessage = new GenericMessage<Object>("response");
this.template.setReceiveMessage(responseMessage);
String actual = this.template.convertSendAndReceive("myChannel", "request", this.headers,
String.class, this.postProcessor);
assertEquals("value", this.template.message.getHeaders().get("key"));
assertEquals("request", this.template.message.getPayload());
assertSame("request", this.postProcessor.getMessage().getPayload());
assertSame("response", actual);
assertSame(this.myChannel, this.template.messageChannel);
}
private static class TestDestinationResolvingMessagingTemplate
extends AbstractDestinationResolvingMessagingTemplate<MessageChannel> {
private MessageChannel messageChannel;
private Message<?> message;
private Message<?> receiveMessage;
private void setReceiveMessage(Message<?> receiveMessage) {
this.receiveMessage = receiveMessage;
}
@Override
protected void doSend(MessageChannel channel, Message<?> message) {
this.messageChannel = channel;
this.message = message;
}
@Override
protected Message<?> doReceive(MessageChannel channel) {
this.messageChannel = channel;
return this.receiveMessage;
}
@Override
protected Message<?> doSendAndReceive(MessageChannel channel, Message<?> requestMessage) {
this.message = requestMessage;
this.messageChannel = channel;
return this.receiveMessage;
}
}
}
class TestMessageChannelDestinationResolver implements DestinationResolver<MessageChannel> {
private final Map<String, MessageChannel> channels = new HashMap<>();
public void registerMessageChannel(String name, MessageChannel channel) {
this.channels.put(name, channel);
}
@Override
public MessageChannel resolveDestination(String name) throws DestinationResolutionException {
return this.channels.get(name);
}
}