Spring Framework example source code file (EventPublicationInterceptorTests.java)

This example Spring Framework source code file (EventPublicationInterceptorTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

applicationcontext, applicationevent, eventpublicationinterceptor, eventpublicationinterceptor, exception, exception, interceptor, itestbean, mutablepropertyvalues, staticapplicationcontext, staticapplicationcontext, testbean, testlistener, testlistener

The Spring Framework EventPublicationInterceptorTests.java source code

/*
 * Copyright 2002-2006 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.aop.framework.ProxyFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.ITestBean;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.TestBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.TestListener;
import org.springframework.context.support.StaticApplicationContext;
import org.springframework.test.AssertThrows;

/**
 * @author Dmitriy Kopylenko
 * @author Juergen Hoeller
 * @author Rick Evans
 */
public class EventPublicationInterceptorTests extends TestCase {

	public void testWithNoApplicationEventClassSupplied() throws Exception {
		new AssertThrows(IllegalArgumentException.class) {
			public void test() throws Exception {
				EventPublicationInterceptor interceptor = new EventPublicationInterceptor();
				ApplicationContext ctx = new StaticApplicationContext();
				interceptor.setApplicationEventPublisher(ctx);
				interceptor.afterPropertiesSet();
			}
		}.runTest();
	}

	public void testWithNonApplicationEventClassSupplied() throws Exception {
		new AssertThrows(IllegalArgumentException.class) {
			public void test() throws Exception {
				EventPublicationInterceptor interceptor = new EventPublicationInterceptor();
				ApplicationContext ctx = new StaticApplicationContext();
				interceptor.setApplicationEventPublisher(ctx);
				interceptor.setApplicationEventClass(getClass());
				interceptor.afterPropertiesSet();
			}
		}.runTest();
	}

	public void testWithAbstractStraightApplicationEventClassSupplied() throws Exception {
		new AssertThrows(IllegalArgumentException.class) {
			public void test() throws Exception {
				EventPublicationInterceptor interceptor = new EventPublicationInterceptor();
				ApplicationContext ctx = new StaticApplicationContext();
				interceptor.setApplicationEventPublisher(ctx);
				interceptor.setApplicationEventClass(ApplicationEvent.class);
				interceptor.afterPropertiesSet();
			}
		}.runTest();
	}

	public void testWithApplicationEventClassThatDoesntExposeAValidCtor() throws Exception {
		new AssertThrows(IllegalArgumentException.class) {
			public void test() throws Exception {
				EventPublicationInterceptor interceptor = new EventPublicationInterceptor();
				ApplicationContext ctx = new StaticApplicationContext();
				interceptor.setApplicationEventPublisher(ctx);
				interceptor.setApplicationEventClass(TestEventWithNoValidOneArgObjectCtor.class);
				interceptor.afterPropertiesSet();
			}
		}.runTest();
	}

	public void testExpectedBehavior() throws Exception {
		TestBean target = new TestBean();
		final TestListener listener = new TestListener();

		class TestContext extends StaticApplicationContext {
			protected void onRefresh() throws BeansException {
				addListener(listener);
			}
		}

		StaticApplicationContext ctx = new TestContext();
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue("applicationEventClass", TestEvent.class.getName());
		// should automatically receive applicationEventPublisher reference
		ctx.registerSingleton("publisher", EventPublicationInterceptor.class, pvs);
		ctx.registerSingleton("otherListener", FactoryBeanTestListener.class);
		ctx.refresh();

		EventPublicationInterceptor interceptor =
				(EventPublicationInterceptor) ctx.getBean("publisher");
		ProxyFactory factory = new ProxyFactory(target);
		factory.addAdvice(0, interceptor);

		ITestBean testBean = (ITestBean) factory.getProxy();

		// invoke any method on the advised proxy to see if the interceptor has been invoked
		testBean.getAge();

		// two events: ContextRefreshedEvent and TestEvent
		assertTrue("Interceptor must have published 2 events", listener.getEventCount() == 2);
		TestListener otherListener = (TestListener) ctx.getBean("&otherListener");
		assertTrue("Interceptor must have published 2 events", otherListener.getEventCount() == 2);
	}


	public static class TestEvent extends ApplicationEvent {

		public TestEvent(Object source) {
			super(source);
		}
	}


	public static final class TestEventWithNoValidOneArgObjectCtor extends ApplicationEvent {

		public TestEventWithNoValidOneArgObjectCtor() {
			super("");
		}
	}


	public static class FactoryBeanTestListener extends TestListener implements FactoryBean {

		public Object getObject() throws Exception {
			return "test";
		}

		public Class getObjectType() {
			return String.class;
		}

		public boolean isSingleton() {
			return true;
		}
	}

}