Spring Framework example source code file (TimerSupportTests.java)

This example Spring Framework source code file (TimerSupportTests.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

delegatingtimertask, methodinvokingtimertaskfactorybean, scheduledtimertask, scheduledtimertask, testcase, testmethodinvokingtask, testrunnable, testtimertask, timer, timer, timerfactorybean, timerfactorybean, timertask, timertask, util

The Spring Framework TimerSupportTests.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.scheduling.timer;

import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

import junit.framework.TestCase;

import org.springframework.scheduling.TestMethodInvokingTask;

/**
 * @author Juergen Hoeller
 * @since 20.02.2004
 */
public class TimerSupportTests extends TestCase {

	public void testTimerFactoryBean() throws Exception {
		final TestTimerTask timerTask0 = new TestTimerTask();

		TestMethodInvokingTask task1 = new TestMethodInvokingTask();
		MethodInvokingTimerTaskFactoryBean mittfb = new MethodInvokingTimerTaskFactoryBean();
		mittfb.setTargetObject(task1);
		mittfb.setTargetMethod("doSomething");
		mittfb.afterPropertiesSet();
		final TimerTask timerTask1 = (TimerTask) mittfb.getObject();

		final TestRunnable timerTask2 = new TestRunnable();

		ScheduledTimerTask[] tasks = new ScheduledTimerTask[3];
		tasks[0] = new ScheduledTimerTask(timerTask0, 0, 10, false);
		tasks[1] = new ScheduledTimerTask(timerTask1, 10, 20, true);
		tasks[2] = new ScheduledTimerTask(timerTask2, 20);

		final List success = new ArrayList(3);
		final Timer timer = new Timer(true) {
			public void schedule(TimerTask task, long delay, long period) {
				if (task == timerTask0 && delay == 0 && period == 10) {
					success.add(Boolean.TRUE);
				}
			}
			public void scheduleAtFixedRate(TimerTask task, long delay, long period) {
				if (task == timerTask1 && delay == 10 && period == 20) {
					success.add(Boolean.TRUE);
				}
			}
			public void schedule(TimerTask task, long delay) {
				if (task instanceof DelegatingTimerTask && delay == 20) {
					success.add(Boolean.TRUE);
				}
			}
			public void cancel() {
				success.add(Boolean.TRUE);
			}
		};

		TimerFactoryBean timerFactoryBean = new TimerFactoryBean() {
			protected Timer createTimer(String name, boolean daemon) {
				return timer;
			}
		};
		try {
			timerFactoryBean.setScheduledTimerTasks(tasks);
			timerFactoryBean.afterPropertiesSet();
			assertTrue(timerFactoryBean.getObject() instanceof Timer);
			timerTask0.run();
			timerTask1.run();
			timerTask2.run();
		}
		finally {
			timerFactoryBean.destroy();
		}

		assertTrue("Correct Timer invocations", success.size() == 4);
		assertTrue("TimerTask0 works", timerTask0.counter == 1);
		assertTrue("TimerTask1 works", task1.counter == 1);
		assertTrue("TimerTask2 works", timerTask2.counter == 1);
	}

	public void testPlainTimerFactoryBean() {
		TimerFactoryBean tfb = new TimerFactoryBean();
		tfb.afterPropertiesSet();
		tfb.destroy();
	}


	private static class TestTimerTask extends TimerTask {

		private int counter = 0;

		public void run() {
			counter++;
		}
	}


	private static class TestRunnable implements Runnable {

		private int counter = 0;

		public void run() {
			counter++;
		}
	}

}