第3章：Maven使用入门/3.3 编写测试代码

• 编写测试代码

1. 在约定src/test/java下新建测试代码类
   1. 
   2. `package com.wys.myapp.helloworld;

import org.junit.Test;
import static org.junit.Assert.*;

public class HelloWorldErrTest {

@Test
public void SayHello(){
HelloWorld helloWorld = new HelloWorld();
String restult = helloWorld.SayHello();
assertEquals("hello world123",restult);
}
}`

3. `package com.wys.myapp.helloworld;

import org.junit.Test;
import static org.junit.Assert.*;

public class HelloWorldTest {

@Test
public void SayHello(){
HelloWorld helloWorld = new HelloWorld();
String restult = helloWorld.SayHello();
assertEquals("hello world",restult);
}
}`

2. 执行mvn clean test：会自动执行src/test/java下面所有的main方法完成测试案例执行，如果有报错则抛出异常并且终止测试
   [D:\MavenTest\HelloWord]$ mvn clean test
   [INFO] Scanning for projects...

   T E S T S

   Running com.wys.myapp.helloworld.HelloWorldTest
   Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.062 sec
   Results :
   Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
   [INFO] ------------------------------------------------------------------------
   [INFO] BUILD SUCCESS
   [INFO] ------------------------------------------------------------------------
   [INFO] Total time: 3.225 s
   [INFO] Finished at: 2018-08-02T14:29:58+08:00
   [INFO] Final Memory: 16M/180M
   [INFO] ------------------------------------------------------------------------
   [D:\MavenTest\HelloWord]$