junit单元测试并发

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:applicationContext-native-test.xml"})
@Slf4j
public class JunitCurrencyTest{
    
    private int threadCount = 5; //子线程数
    
    private CountDownLatch countDownLatch = new CountDownLatch(threadCount);

    @Test
    public void test(){
        for(int a=1;a<=threadCount ;a++){
            Mythread mythread = new Mythread();
            Thread thread = new Thread(mythread);
            thread.start();
        }
        try{
            countDownLatch.await(); //主线程等待 ,直到countDownLatch 为0
        }catch(Exception){
            
        }
    }

    class Mythread implements Runable(){
        
        private CountDownLatch countDownLatch;
        
        public Mythread(CountDownLtch countDownLacth){
            this.countDownLatch=countDownLatch;
        }
        
        @override
        public void run(){
            //执行业务代码
            countDownLatch.countDown();
        }
        
    }
}