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  • 多线程junit单元测试

    junit中测试完成后会进行jvm退出,而不是线程退出,所以任一线程退出都会导致测试结束,junit想进行多线程测试需要进行另外包装,网上看到一个投机取巧的例子还不错,贴上我的测试代码(代码中我需要测试socket客户端代码,所以需要模拟服务端才能测试,故而进行两个线程测试):

    package com.newland.sri.utap.ats;
    
    import com.newland.sri.utap.ats.utils.AnalyPacket;
    import com.newland.sri.utap.utils.Constants;
    import org.apache.ignite.Ignition;
    import org.junit.Before;
    import org.junit.Test;
    
    import java.io.DataInputStream;
    import java.io.DataOutputStream;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    
    /**
     * 测试
     * Created by garfield on 2016/6/20.
     */
    public class AtsTest {
    
        final static private long THREAD_MAX_RUNTIME = 10000000;
        final static private long THREAD_WAITTIME = 200;
        private T1 myThread1 = null;
        private T2 myThread2 = null;
        @Before
        public void setUp() throws Exception {
            myThread1 = new T1();
            myThread2 = new T2();
        }
    
        @Test(timeout = THREAD_MAX_RUNTIME)
        public void testRun() throws Exception {
            Thread t1 = new Thread(myThread1);
            Thread t2 = new Thread(myThread2);
            t1.start();
            t2.start();
            Thread tc = Thread.currentThread();
            synchronized (tc) {
                while (t1.isAlive() || t2.isAlive()) {
                    tc.wait(THREAD_WAITTIME);
                }
                tc.notify();
            }
        }
        class T1 implements Runnable {
            private ServerSocket server;
            @Override
            public void run() {
                try {
                    server = new ServerSocket(6666);
                    Constants.IGNITE = Ignition.start("utap-ats.xml");
                    while (true) {
                        AgentServer agentServer = new AgentServer();
                        agentServer.start();
                        break;
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    
        class T2 implements Runnable {
            @Override
            public void run() {
                try {
                    Socket socket = new Socket("127.0.0.1", 6666);
                    DataOutputStream out = new DataOutputStream(socket.getOutputStream());
                    out.write();//写入东西,此处代码省略
                    out.flush();
                    while (true) {
                        if (socket.getInputStream() != null) {
                            DataInputStream in = new DataInputStream(socket.getInputStream());
                            byte[] bytes = new byte[200];
                            int start = 0;
                            in.read(bytes);
    
                            break;
                        }
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }

    可以看到我的线程是启动了ignite了的,并且有服务端和客户端,这些都不重要= =,代码中

     Thread tc = Thread.currentThread();
            synchronized (tc) {
                while (t1.isAlive() || t2.isAlive()) {
                    tc.wait(THREAD_WAITTIME);
                }
                tc.notify();
            }

    这一段使得线程切换得以进行,通过这个方法,很多多线程的单元测试都可以进行啦.

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  • 原文地址:https://www.cnblogs.com/garfieldcgf/p/5620221.html
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