Junit测试框架

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最简单的例子介绍Junit测试框架

public class Person {public void run() { System.out.println("run!!!");}public void eat() {System.out.println("eat!!!");}public static void main(String[] args){System.out.println("miao");}}

import org.junit.After;import org.junit.Before;import org.junit.Test;//Person类的测试类public class test {private Person p; //@Before、@Test、@After 是关键  没有这个标志不能生成Junit测试@Before     public void before() {System.out.println("before");p = new Person();}@Test        public void testRun() {p.run();}@Testpublic void testEat() {p.eat();}@After        public void after() {System.out.println("after");p = null;}}

输出：

before
run!!!
after
before
eat!!!
after

import org.junit.AfterClass;import org.junit.BeforeClass;import org.junit.Test;//Person类的测试类public class test { //@BeforeClass、@Test、@AfterClass 是关键  没有这个标志不能生成Junit测试@BeforeClass     public static void beforeClass() {System.out.println("before");}@Test        public void testRun() {Person p = new Person();p.run();}@Testpublic void testEat() {Person p = new Person();p.eat();}@AfterClass        public static void afterClass() {System.out.println("after");}}

输出：
before
run!!!
eat!!!
after

public class Person {public String run() {// System.out.println("run!!!"); return "1";}public void eat() {System.out.println("eat!!!");}public static void main(String[] args){System.out.println("miao");}}

import org.junit.Assert;import org.junit.Test;//Person类的测试类public class test { // @Test  是关键  没有这个标志不能生成Junit测试 @Test        public void testRun() {Person p = new Person();//p.run();//断言Assert.assertEquals("1",p.run()); //测试预期的结果和运行的结果是否一致（测试通过，绿条）Assert.assertEquals("2",p.run()); //测试预期的结果和运行的结果是否一致（测试不通过，红条）                 //Assert还有很多类方法具体可查询api}@Testpublic void testEat() {Person p = new Person();p.eat();} }

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