/*
* Copyright 2002-2012 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.context.event;
import junit.framework.TestCase;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.Lifecycle;
import org.springframework.context.support.StaticApplicationContext;
/**
* @author Mark Fisher
* @author Juergen Hoeller
*/
public class LifecycleEventTests extends TestCase {
public void testContextStartedEvent() {
StaticApplicationContext context = new StaticApplicationContext();
context.registerSingleton("lifecycle", LifecycleTestBean.class);
context.registerSingleton("listener", LifecycleListener.class);
context.refresh();
LifecycleTestBean lifecycleBean = (LifecycleTestBean) context.getBean("lifecycle");
LifecycleListener listener = (LifecycleListener) context.getBean("listener");
assertFalse(lifecycleBean.isRunning());
assertEquals(0, listener.getStartedCount());
context.start();
assertTrue(lifecycleBean.isRunning());
assertEquals(1, listener.getStartedCount());
assertSame(context, listener.getApplicationContext());
}
public void testContextStoppedEvent() {
StaticApplicationContext context = new StaticApplicationContext();
context.registerSingleton("lifecycle", LifecycleTestBean.class);
context.registerSingleton("listener", LifecycleListener.class);
context.refresh();
LifecycleTestBean lifecycleBean = (LifecycleTestBean) context.getBean("lifecycle");
LifecycleListener listener = (LifecycleListener) context.getBean("listener");
assertFalse(lifecycleBean.isRunning());
context.start();
assertTrue(lifecycleBean.isRunning());
assertEquals(0, listener.getStoppedCount());
context.stop();
assertFalse(lifecycleBean.isRunning());
assertEquals(1, listener.getStoppedCount());
assertSame(context, listener.getApplicationContext());
}
private static class LifecycleListener implements ApplicationListener<ApplicationEvent> {
private ApplicationContext context;
private int startedCount;
private int stoppedCount;
@Override
public void onApplicationEvent(ApplicationEvent event) {
if (event instanceof ContextStartedEvent) {
this.context = ((ContextStartedEvent) event).getApplicationContext();
this.startedCount++;
}
else if (event instanceof ContextStoppedEvent) {
this.context = ((ContextStoppedEvent) event).getApplicationContext();
this.stoppedCount++;
}
}
public ApplicationContext getApplicationContext() {
return this.context;
}
public int getStartedCount() {
return this.startedCount;
}
public int getStoppedCount() {
return this.stoppedCount;
}
}
private static class LifecycleTestBean implements Lifecycle {
private boolean running;
@Override
public boolean isRunning() {
return this.running;
}
@Override
public void start() {
this.running = true;
}
@Override
public void stop() {
this.running = false;
}
}
}