java - 如何使用 JUnit 和 Mockito 通过静态 util 调用测试 Rest Controller

Question

我有 Rest Controller，方法是 create(validation using util class + databaseService(databaseDao + caching ))

@RestController
@RequestMapping("files")
public class FilesController {
    private IDbFilesDao dbFilesService;
    private Map<String, Table> tables;

    public FilesController(IDbFilesDao dbFilesService, Map<String, Table> tables) {
        this.dbFilesService = dbFilesService;
        this.tables = tables;
    }

    @PostMapping("{table}")
    public ResponseEntity createTable(@PathVariable("table") String tableName,
                                         @RequestBody File file) {
        FilesValidator.validateAdding(tableName, tables, file);

        dbFilesService.create(tableName, file);

        URI location = ServletUriComponentsBuilder.fromCurrentRequest().buildAndExpand(file.getKey()).toUri();
        return ResponseEntity.created(location).build();
    }
}

我有一个测试:

@RunWith(SpringRunner.class)
@WebMvcTest(value = FilesController.class, secure = false)
public class FilesControllerTest {
    @Autowired
    private MockMvc mockMvc;

    @MockBean
    private IDbFilesDao dbFilesService;

    @MockBean
    private Map<String, Table> tables;

    @Test
    public void create() throws Exception {
        RequestBuilder requestBuilder = MockMvcRequestBuilders
                .post("/files/tableName")
                .accept(MediaType.APPLICATION_JSON)
                .content(POST_JSON_BODY)
                .contentType(MediaType.APPLICATION_JSON);
        MvcResult result = mockMvc.perform(requestBuilder).andReturn();
        MockHttpServletResponse response = result.getResponse();
        assertEquals(HttpStatus.CREATED.value(), response.getStatus());
    }
}

只有在@RestContoller 中没有这一行，它才能正常工作:

FilesValidator.validateAdding(tableName, tables, file);

此行 - 404 未找到。

FilesValidator - 具有静态方法的实用程序类。它检查数据是否有效并且不执行任何操作或抛出带有状态代码(例如 404)的运行时异常。

如何在不删除验证的情况下修复它？

Answer 1

1) 将 validator 调用移至包级方法并进行小规模重构:

@PostMapping("{table}")
    public ResponseEntity createTable(@PathVariable("table") String tableName,
                                         @RequestBody File file) {
        validateAdding(tableName, tables, file);
        ...
}

validateAdding(String tableName, Map<String, Table> tables, File file){
    FilesValidator.validateAdding(tableName, tables, file);
}

2) 在测试中侦测 Controller :

@SpyBean
private FilesController filesControllerSpy;

3) 让 validateAdding 方法什么也不做:

@Test
public void create() throws Exception {

   doNothing().when(filesControllerSpy)
     .validateAdding(any(String.class), any(Map.class), any(File.class));
   ...