174.单元测试-三个常用注解before，test，after

package com.itheima.jsunitDemo2;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class JunitDemo2 {
    @Before
    public void before(){
        System.out.println("before");
    }
    @Test
    public void test(){
        System.out.println("test");
    }
    @After
    public void after(){
        System.out.println("after");
    }
}