Question

如何用mockito+spring进行单元测试

Answer 1

通过Mockito的API来MockUserService.getUsername(long id)方法，@Controller的测试代码如下：
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = {
SpringMvcTestDemoApplication.class,
TestContext.class
})
@WebAppConfiguration
public class SpringMvcTestDemoApplicationTests {

@Autowired
UserService userService;

@Autowired
UserController controller;

MockMvc mockMvc;

@Before
public void init() {
this.mockMvc = MockMvcBuilders.standaloneSetup(controller).build();
}

@Test
public void getUserById() throws Exception {
long id = 1L;
String ricky = "Ricky";
Mockito.when(userService.getUsername(id)).thenReturn(ricky);
this.mockMvc.perform(get("/users/" + id))
.andExpect(status().isOk())
.andExpect(content().string("username=" + ricky));
}

}