Junit在多线程测试时的坑

Junit单元测试主线程退出，子线程也会退出

@Testpublic void test() throws InterruptedException {Thread t1 = new Thread(() -> {try {TimeUnit.SECONDS.sleep(5);} catch (InterruptedException e) {throw new RuntimeException(e);}System.out.println(Thread.currentThread().getName()+"：finish");}, "t1");t1.start(); }

可以看到什么都不会打印，如果给主线程也加上sleep，那就可以了

@Testpublic void test() throws InterruptedException {Thread t1 = new Thread(() -> {try {TimeUnit.SECONDS.sleep(5);} catch (InterruptedException e) {throw new RuntimeException(e);}System.out.println(Thread.currentThread().getName()+"：finish");}, "t1");t1.start();TimeUnit.SECONDS.sleep(6);}