Spring-boot实例学习之 Command line application单元测试

引入依赖

<dependency>  <groupId>org.springframework.boot</groupId>  <artifactId>spring-boot-starter-test</artifactId>  <optional>true</optional></dependency>

创建单元测试类

创建Junit测试类，并用到 @RunWith，@SpringBootTest两个注解。

@SpringBootTest(classes = {StartupRunner.class})@SpringBootTestpublic class UserEntityTestTest {  @Autowired  private JunitService mockService;  @Test  public void test1() throws Exception {    junitService.printJunitServiceName();  }}@SpringBootApplicationpublic class StartupRunner implements CommandLineRunner {  @Override  public void run(String... strings) throws Exception {    System.out.println("hello CommandLineRunner");  }  public static void main(String[] args) {    SpringApplication.run(StartupRunner.class, args);  }}

@SpringBootTest 标注一个测试类，如果该注解没有指定加载的启动配置类，那么会自动搜索标注有@SpringBootApplication注解的类。如果需要手工指定，那么通过注解的classes属性即可。找到启动类后注入服务，随后可以进行测试。

创建Mock

通过@MockBean注解字段，通过BDDMockito的方法生成模拟接口的返回值或抛出的异常，然后进行测试。

@RunWith(SpringRunner.class)@SpringBootTest(classes = {StartupRunner.class})public class UserEntityTestTest {  @MockBean  private JunitService mockService;  @Test  public void test1() throws Exception {    BDDMockito.given(mockService.printMsg()).willReturn("hello");    String msgRet = mockService.printMsg();    Assert.assertTrue(msgRet.equals("hello"));  }}

参考

41.3 Testing Spring Boot applications
http://docs.spring.io/spring-boot/docs/1.5.4.RELEASE/reference/htmlsingle/