Junit单元测试常用断言

Junit————单元测试常用断言

一、assertThat

// assertThat 导包importstaticorg.hamcrest.Matchers.*;importstaticorg.hamcrest.MatcherAssert.*;

常用：is、equalTo、containsString

assertThat(参数值, 匹配符)

assertThat(actuals,is(expecteds));//方法（实际值，（符合）预期）；

1、is

assertThat(方法传参,is("期望值"));

//eg:@Testpublicvoidtest1(){//用例一assertThat(dycs_20_03.l("A1234567","12345678"),is("用户名不符合要求"));}

2、equalTo

匹配两个值是相等

assertThat(方法传参,equalTo("期望值"));

eg:

@Testpublicvoidtest2(){//用例二assertThat(dycs_51_02.b(50,1.5),equalTo("Normal"));}

3、containsString

包含字符串 参数为String

eg：

@Testpublicvoidtest3(){//用例三 判定1 T 判定2 TassertThat(dycs_51_03.l("12345678901","A1"),containsString("OK"));}

二、assert

1、 assertEquals(expecteds,actuals)

匹配两个值是否相等，通常是第四题的最后用这个断言

eg:

@Testpublicvoidtest(){//断言assertEquals(exe,dycs_51_04.l(x1, x2));}

三、特殊运行器

最后一题的格式

1、特殊运行器

//特殊运行器@RunWith(Parameterized.class)publicclassTest{String x1;String x2;String exe;

2、构造函数

//构造函数publicdycs_51_04Test(String x1,String x2,String exe){this.x1 = x1;this.x2 = x2;this.exe = exe;}

3、特殊函数参数化

//特殊函数参数化@ParameterspublicstaticCollection<Object[]>data(){returnArrays.asList(newObject[][]{//测试数据{"","","用户名或密码不能为空"},{"admin","123","登录成功"},{"ad","123","请输入正确的用户名"},{"admin","1234","请输入正确的密码"},{"ad","1","请输入正确的用户名和密码"}});}