上次写完了一个controller，这次我可以讲讲怎么写一下测试，单元测试对于我们开发人员来说是一个十分重要的知识点，所以我特地记录一下
增加单元测试需要在pom.xml加上这个，有了就不用加了
'''
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
'''
先介绍一下，测试的基本用法分为
Service层单元测试
Controller层单元测试
新断言assertThat使用
单元测试的回滚
在写测试类之前，先新建service类，
在建立了service类之后，再新建test类，其中我继承了DemoTestApplicationTests是因为我懒得写@RunWith(SpringRunner.class)
和@SpringBootTest，所以通过继承的方式来实现
代码为：
'''
package com.example.test.demotest.test;
import com.example.test.demotest.DemoTestApplicationTests;
import com.example.test.demotest.service.IGetService;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import static org.assertj.core.internal.bytebuddy.matcher.ElementMatchers.is;
/**
* @author qiubo
* @date 2019/1/20
*/
public class ServiceTestextends DemoTestApplicationTests {
@Autowired
IGetServicegetService;
@Test
public void test(){
Assert.assertEquals(getService.getTest(),"testService");
//Assert.assertEquals(getService.getTest(),"test");
}
}
'''
运行这个类，你会发现没有问题，当你取消掉Assert.assertEquals(getService.getTest(),"test");这句注释，你会发现程序报错，这就说明他与你期望的值并不一样
controller的测试：
'''
package com.example.test.demotest.test;
import com.example.test.demotest.DemoTestApplicationTests;
import com.example.test.demotest.controller.TestController;
import com.example.test.demotest.service.IGetService;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.MockitoAnnotations;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
/**
* @author qiubo
* @date 2019/1/20
*/
public class ServiceTestextends DemoTestApplicationTests {
@InjectMocks
private TestControllercontroller;
@Autowired
IGetServicegetService;
private MockMvcmockMvc;
@Before
public void setUp()throws Exception {
this.mockMvc = MockMvcBuilders.standaloneSetup(controller).build();
MockitoAnnotations.initMocks(this);
}
@Test
public void test(){
Assert.assertEquals(getService.getTest(),"testService");
//Assert.assertEquals(getService.getTest(),"test");
}
@Test
public void testController()throws Exception {
MvcResult mvcResult =this.mockMvc.perform(MockMvcRequestBuilders.get("/test"))
.andExpect(MockMvcResultMatchers.status().isOk())
.andExpect(MockMvcResultMatchers.content().string("test"))
.andReturn();
System.out.println(mvcResult.getResponse().getContentAsString());
}
}
'''
剩下的回滚和断言可以看这个网址，它上面介绍的非常好
http://tengj.top/2017/12/28/springboot12/
