/*
* Copyright 2002-2015 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.simp.broker;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.mockito.MockitoAnnotations;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.SubscribableChannel;
import org.springframework.messaging.support.GenericMessage;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
/**
* Unit tests for {@link org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler}.
*
* @author Rossen Stoyanchev
*/
public class BrokerMessageHandlerTests {
private TestBrokerMesageHandler handler;
@Before
public void setup() {
MockitoAnnotations.initMocks(this);
this.handler = new TestBrokerMesageHandler();
}
@Test
public void startShouldUpdateIsRunning() {
assertFalse(this.handler.isRunning());
this.handler.start();
assertTrue(this.handler.isRunning());
}
@Test
public void stopShouldUpdateIsRunning() {
this.handler.start();
assertTrue(this.handler.isRunning());
this.handler.stop();
assertFalse(this.handler.isRunning());
}
@Test
public void startAndStopShouldNotPublishBrokerAvailabilityEvents() {
this.handler.start();
this.handler.stop();
assertEquals(Collections.emptyList(), this.handler.availabilityEvents);
}
@Test
public void handleMessageWhenBrokerNotRunning() {
this.handler.handleMessage(new GenericMessage<Object>("payload"));
assertEquals(Collections.emptyList(), this.handler.messages);
}
@Test
public void publishBrokerAvailableEvent() {
assertFalse(this.handler.isBrokerAvailable());
assertEquals(Collections.emptyList(), this.handler.availabilityEvents);
this.handler.publishBrokerAvailableEvent();
assertTrue(this.handler.isBrokerAvailable());
assertEquals(Arrays.asList(true), this.handler.availabilityEvents);
}
@Test
public void publishBrokerAvailableEventWhenAlreadyAvailable() {
this.handler.publishBrokerAvailableEvent();
this.handler.publishBrokerAvailableEvent();
assertEquals(Arrays.asList(true), this.handler.availabilityEvents);
}
@Test
public void publishBrokerUnavailableEvent() {
this.handler.publishBrokerAvailableEvent();
assertTrue(this.handler.isBrokerAvailable());
this.handler.publishBrokerUnavailableEvent();
assertFalse(this.handler.isBrokerAvailable());
assertEquals(Arrays.asList(true, false), this.handler.availabilityEvents);
}
@Test
public void publishBrokerUnavailableEventWhenAlreadyUnvailable() {
this.handler.publishBrokerAvailableEvent();
this.handler.publishBrokerUnavailableEvent();
this.handler.publishBrokerUnavailableEvent();
assertEquals(Arrays.asList(true, false), this.handler.availabilityEvents);
}
private static class TestBrokerMesageHandler extends AbstractBrokerMessageHandler
implements ApplicationEventPublisher {
private final List<Message<?>> messages = new ArrayList<>();
private final List<Boolean> availabilityEvents = new ArrayList<>();
private TestBrokerMesageHandler() {
super(mock(SubscribableChannel.class), mock(MessageChannel.class), mock(SubscribableChannel.class));
setApplicationEventPublisher(this);
}
@Override
protected void handleMessageInternal(Message<?> message) {
this.messages.add(message);
}
@Override
public void publishEvent(ApplicationEvent event) {
publishEvent((Object) event);
}
@Override
public void publishEvent(Object event) {
if (event instanceof BrokerAvailabilityEvent) {
this.availabilityEvents.add(((BrokerAvailabilityEvent) event).isBrokerAvailable());
}
}
}
}