Spring Framework example source code file (StopWatchTests.java)

This example Spring Framework source code file (StopWatchTests.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

can't, can't, exception, illegalstateexception, stopwatch, stopwatch, stopwatchtests, string, string, task, task, testcase, unsupportedoperationexception

The Spring Framework StopWatchTests.java source code

 
/*
 * Copyright 2002-2005 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.util;

import junit.framework.TestCase;

/**
 * @author Rod Johnson
 */
public class StopWatchTests extends TestCase {

	/**
	 * Are timings off in JUnit?
	 */
	public void testValidUsage() throws Exception {
		StopWatch sw = new StopWatch();
		long int1 = 166L;
		long int2 = 45L;
		String name1 = "Task 1";
		String name2 = "Task 2";
		
		long fudgeFactor = 5L;
		assertFalse(sw.isRunning());
		sw.start(name1);
		Thread.sleep(int1);
		assertTrue(sw.isRunning());
		sw.stop();
		
		// TODO are timings off in JUnit? Why do these assertions sometimes fail
		// under both Ant and Eclipse?
		
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() >= int1);
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() <= int1 + fudgeFactor);
		sw.start(name2);
		Thread.sleep(int2);
		sw.stop();
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() >= int1 + int2);
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() <= int1 + int2 + fudgeFactor);
		
		assertTrue(sw.getTaskCount() == 2);
		String pp = sw.prettyPrint();
		assertTrue(pp.indexOf(name1) != -1);
		assertTrue(pp.indexOf(name2) != -1);
		
		StopWatch.TaskInfo[] tasks = sw.getTaskInfo();
		assertTrue(tasks.length == 2);
		assertTrue(tasks[0].getTaskName().equals(name1));
		assertTrue(tasks[1].getTaskName().equals(name2));
		sw.toString();
	}
	
	public void testValidUsageNotKeepingTaskList() throws Exception {
		StopWatch sw = new StopWatch();
		sw.setKeepTaskList(false);
		long int1 = 166L;
		long int2 = 45L;
		String name1 = "Task 1";
		String name2 = "Task 2";
	
		long fudgeFactor = 5L;
		assertFalse(sw.isRunning());
		sw.start(name1);
		Thread.sleep(int1);
		assertTrue(sw.isRunning());
		sw.stop();
	
		// TODO are timings off in JUnit? Why do these assertions sometimes fail
		// under both Ant and Eclipse?
	
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() >= int1);
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() <= int1 + fudgeFactor);
		sw.start(name2);
		Thread.sleep(int2);
		sw.stop();
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() >= int1 + int2);
		//assertTrue("Unexpected timing " + sw.getTotalTime(), sw.getTotalTime() <= int1 + int2 + fudgeFactor);
	
		assertTrue(sw.getTaskCount() == 2);
		String pp = sw.prettyPrint();
		assertTrue(pp.indexOf("kept") != -1);
		sw.toString();
	
		try {
			sw.getTaskInfo();
			fail();
		}
		catch (UnsupportedOperationException ex) {
			// Ok
		}
	}
	
	public void testFailureToStartBeforeGettingTimings() {
		StopWatch sw = new StopWatch();
		try {
			sw.getLastTaskTimeMillis();
			fail("Can't get last interval if no tests run");
		}
		catch (IllegalStateException ex) {
			// Ok
		}
	}
	
	public void testFailureToStartBeforeStop() {
		StopWatch sw = new StopWatch();
		try {
			sw.stop();
			fail("Can't stop without starting");
		}
		catch (IllegalStateException ex) {
			// Ok
		}
	}
	
	public void testRejectsStartTwice() {
		StopWatch sw = new StopWatch();
		try {
			sw.start("");
			sw.stop();
			sw.start("");
			assertTrue(sw.isRunning());
			sw.start("");
			fail("Can't start twice");
		}
		catch (IllegalStateException ex) {
			// Ok
		}
	}

}