spring-test - MockMvc 测试 POST 请求

Question

我的 REST Controller 中有以下发布路由:

     @RequestMapping(value = "", method = RequestMethod.POST, produces = 
    "application/json")
    public ResponseEntity saveMovie(@RequestBody Movie movie){
        movieService.saveMovie(movie);
        return new ResponseEntity<Movie>(movie, HttpStatus.OK);
    }

该路由使用服务将请求正文中传递的电影添加到数据存储中。 服务方法的签名是这样的:

    Movie saveMovie(Movie movie);

我已经为它编写了以下测试和辅助方法:

      @Test
      public void saveMovie() throws Exception {
        Movie movie1 = new Movie();
        movie1.setImdbID("imdb1");
        movie1.setTitle("Meter");
        movie1.setYear("2015");
        movie1.setPoster("meter.jpg");

        when(movieService.saveMovie(movie1)).thenReturn(movie1);
        mockMvc.perform(post("/v1/api/movie")
                .contentType(MediaType.APPLICATION_JSON_UTF8)
                .content(asJsonString(movie1))
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())                   
                .andExpect(content().contentType
                     (MediaType.APPLICATION_JSON_UTF8_VALUE));
                 verify(movieService, times(1)).saveMovie(movie1);
                 verifyNoMoreInteractions(movieService);
    }



    public static String asJsonString(final Object obj) {
        try {
            final ObjectMapper mapper = new ObjectMapper();
            final String jsonContent = mapper.writeValueAsString(obj);
            System.out.println(jsonContent);
            return jsonContent;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

我收到以下错误:

    Argument(s) are different! Wanted:
     com.stackroute.ng2boot.service.MovieService#0 bean.saveMovie(
       com.stackroute.ng2boot.domain.Movie@ae372b9
     );
     -> at 

     com.stackroute.ng2boot.controllers.MovieRestControllerTest.
     saveMovie(MovieRestControllerTest.java:129)
     Actual invocation has different arguments:
    com.stackroute.ng2boot.service.MovieService#0 bean.saveMovie(
    com.stackroute.ng2boot.domain.Movie@2098d37d
    );
    -> at     
    com.stackroute.ng2boot.controllers.MovieRestController.
    saveMovie(MovieRestController.java:60)

除了 save 和 update，我需要传递一个 Movie JSON 作为请求体，其他路由都通过了测试。请分享您的宝贵意见。

提前致谢。

Answer 1

假设这是 MovieService 类:

@Component
public class MovieService {

    private static List<Movie> movieList = new ArrayList<>();

    static {
        Movie m1 = new Movie("id1", "title1","2000", "poster1.jpg");
        Movie m2 = new Movie("id2", "title2","2001", "poster2.jpg");
        Movie m3 = new Movie("id3", "title3","2002", "poster3.jpg");
        Movie m4 = new Movie("id4", "title4","2003", "poster4.jpg");
        Movie m5 = new Movie("id5", "title5","2004", "poster5.jpg");

        movieList.add(m1);
        movieList.add(m2);
        movieList.add(m3);
        movieList.add(m4);
        movieList.add(m5);
    }

    public Movie saveMovie(Movie movie){
        movieList.add(movie);
        return movie;
    }
}

假设这是 MovieController 类:

@RestController
public class MovieController {

    private final MovieService movieService;

    public MovieController(MovieService movieService) {
        this.movieService = movieService;
    }

    @PostMapping(value = "", produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity saveMovie(@RequestBody Movie movie){
        movieService.saveMovie(movie);
        return new ResponseEntity<>(movie, HttpStatus.OK);
    }
}

您可以使用 MockMvc 编写如下测试。该测试检查响应中的 HttpStatus 是否是预期的:HttpStatus.OK。并检查是否为 movie6 调用了一次 saveMovie.saveMovie。

@RunWith(SpringRunner.class)
@WebMvcTest(MovieController.class)
public class MovieControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @MockBean
    private MovieService movieService;

    @Test
    public void saveMovie() throws Exception {
        Movie movie6 = new Movie("id6", "title6", "2006", "poster6.jpg");
        String movie6AsJson = new ObjectMapper().writeValueAsString(movie6);
        String url = "/";

        when(movieService.saveMovie(any(Movie.class))).thenReturn(movie6);

        RequestBuilder requestBuilder = MockMvcRequestBuilders.post(url)
            .accept(MediaType.APPLICATION_JSON)
            .contentType(MediaType.APPLICATION_JSON)
            .content(movie6AsJson);

        MvcResult mvcResult = mockMvc.perform(requestBuilder).andReturn();

        int actualResult = mvcResult.getResponse().getStatus();
        int expectedResult = HttpStatus.OK.value();

        assertEquals("Result not as expected!",expectedResult,actualResult);
        verify(movieService, times(1)).saveMovie(refEq(movie6));
    }

}