Junit使用GroboUtils进行多线程测试

* Run the tests contained in the classes named in the <code>args</code>.

* If all tests run successfully, exit with a status of 0. Otherwise exit with a status of 1.

* Write feedback while tests are running and write

* stack traces for all failed tests after the tests all complete.

* @param args names of classes in which to find tests to run

*/

public static void main(String... args) {

runMainAndExit(new RealSystem(), args);

}

/**

* Do not use. Testing purposes only.

* @param system

*/

public static void runMainAndExit(JUnitSystem system, String... args) {

Result result= new JUnitCore().runMain(system, args);

system.exit(result.wasSuccessful() ? 0 : 1);

}

RealSystem.java：

public void exit(int code) {

System.exit(code);

}

　　所以要想编写多线程Junit测试用例，就必须让主线程等待所有子线程执行完成后再退出。想到的办法自然是Thread中的join方法。话又说回来，这样一个简单而又典型的需求，难道会没有第三方的包支持么？通过google，很快就找到了GroboUtils这个Junit多线程测试的开源的第三方的工具包。

　　GroboUtils官网下载解压后 使用 GroboUtils-5\lib\core\GroboTestingJUnit-1.2.1-core.jar 这个即可

　　GroboUtils是一个工具集合,里面包含各种测试工具,这里使用的是该工具集中的jUnit扩展.

　　依赖好Jar包后就可以编写多线程测试用例了。上手很简单：

package com.junittest.threadtest;

import java.util.ArrayList;

import java.util.HashSet;

import java.util.Hashtable;

import java.util.List;

import java.util.Map;

import java.util.Set;

import net.sourceforge.groboutils.junit.v1.MultiThreadedTestRunner;

import net.sourceforge.groboutils.junit.v1.TestRunnable;

import org.junit.Test;

public class MutiThreadTest {

static String[] path = new String[] { "" };

static Map<String, String> countMap = new Hashtable<String, String>();

static Map<String, String> countMap2 = new Hashtable<String, String>();

static Set<String> countSet = new HashSet<String>();

static List<String> list = new ArrayList<String>();

@Test

public void testThreadJunit() throws Throwable {

//Runner数组，想当于并发多少个。

TestRunnable[] trs = new TestRunnable [10];

for(int i=0;i<10;i++){

trs[i]=new ThreadA();

}

// 用于执行多线程测试用例的Runner，将前面定义的单个Runner组成的数组传入

MultiThreadedTestRunner mttr = new MultiThreadedTestRunner(trs);

// 开发并发执行数组里定义的内容

mttr.runTestRunnables();

}

private class ThreadA extends TestRunnable {

@Override

public void runTest() throws Throwable {

// 测试内容

myCommMethod2();

}

}

public void myCommMethod2() throws Exception {

System.out.println("===" + Thread.currentThread().getId() + "begin to execute myCommMethod2");

for (int i = 0; i <10; i++) {

int a  = i*5;

System.out.println(a);

}

System.out.println("===" + Thread.currentThread().getId() + "end to execute myCommMethod2");

}

}