Status expected:<200> but was:<400> error with MockMvc-CodePudding

I have an issue with testing my Spring Boot Controller I'm trying to solve for the past few hours. I'm quite new to coding, but I got that assignment in my company nevertheless.

My Controller:

@GetMapping(value = "/data", produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<Object> getData(@RequestParam("core") List<String> core, @RequestParam("date") List<String> date,
        @RequestParam("state") String state, @RequestParam("area") List<String> area,
        @RequestParam("type") List<String> type, @RequestParam("analyt") String analyt,
        @RequestParam("wp") String wp, @RequestParam("subDesc") String subDesc,
        @RequestParam("anaMonitor") List<String> anaMonitor, @RequestParam("ecoMonitor") List<String> ecoMonitor,
        @RequestParam("subType") List<String> subType, @RequestParam("needed") List<String> needed,
        @RequestParam("notify") List<String> notify, @RequestParam("available") List<String> available,
        @RequestParam("phase") List<String> phase, @RequestParam("subAvailable") List<String> subAvailable,
        @RequestParam("subShipped") List<String> subShipped, @RequestParam("external") List<String> external,
        @RequestParam("valid") List<String> valid, @RequestParam("contract") List<String> contract) {
    FilterInputModel model = new FilterInputModel(core, date, state, type, area, analyt, wp, subDesc, anaMonitor, ecoMonitor, subType, needed, notify, available, phase, subAvailable, subShipped, external, valid, contract);  
        return new ResponseEntity<>(vaultService.getFilteredFields(model), HttpStatus.OK);
    }

Here's a test:

@DisplayName("Controller Test")
@AutoConfigureMockMvc
@WebMvcTest(controllers = Controller.class, excludeAutoConfiguration = SecurityAutoConfiguration.class)
class ControllerTest {

    @Autowired
    private MockMvc mockMvc;
    
    private FilterInputModel model;
    
    @MockBean
    private TestService testService;
    
    @Autowired
    ControllerTest() {
    }

    @BeforeEach
    void setup() {
        MockitoAnnotations.openMocks(this);
        
    @Test
    void getDataTest() throws Exception {
        List<Object> response = new ArrayList<>();
        when(vaultService.getFilteredFields(model))
            .thenReturn(response)
            .thenReturn(HttpStatus.OK);
            
        this.mockMvc.perform(
                MockMvcRequestBuilders.get("/api/data")
                    .contentType(MediaType.APPLICATION_JSON_VALUE)
                    .accept("application/json"))
                .andExpect(MockMvcResultMatchers.status().isOk());
                .andExpect(result -> assertEquals(response, result.getAsyncResult()));
   }

And here's an answer I got. It says in an error message that 'Required request parameter 'core' for method parameter type List is not present' but that answer didn't help me much. I'm still stuck looking for an answer.

MockHttpServletRequest:
      HTTP Method = GET
      Request URI = /api/data
       Parameters = {}
          Headers = [Content-Type:"application/json;charset=UTF-8", Accept:"application/json"]
             Body = null
    Session Attrs = {}

Handler:
             Type = hr.ogcs.ltt.api.lttapi.controller.LttController
           Method = hr.ogcs.ltt.api.lttapi.controller.LttController#getData(List, List, String, List, List, String, String, String, List, List, List, List, List, List, List, List, List, List, List, List)

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = org.springframework.web.bind.MissingServletRequestParameterException

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 400
    Error message = Required request parameter 'core' for method parameter type List is not present
          Headers = [Vary:"Origin", "Access-Control-Request-Method", "Access-Control-Request-Headers"]
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

Status expected:<200> but was:<400>
Expected :200
Actual   :400
<Click to see difference>

java.lang.AssertionError: Status expected:<200> but was:<400>
    at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:59)
    at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:122)
    at org.springframework.test.web.servlet.result.StatusResultMatchers.lambda$matcher$9(StatusResultMatchers.java:627)
    at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:212)
   at hr.ogcs.ltt.api.apicontroller.ControllerTest.getDataTest(ControllerTest.java:126) <31 internal lines>
   at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)<9 internal lines>
   at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)<48 internal lines>

CodePudding user response：

You are not sending the required parameters (the parameters annotated with @RequestParam) to the method. By default they are all required. If not present Spring blocks the request with missing arguments.

Example of sending parameters:

mvc.perform(
    MockMvcRequestBuilders.get("/public/xpto/{code}", "21212").param("core", "ubababacaio")
        .contentType(MediaType.APPLICATION_JSON)
        .contentType(MediaType.APPLICATION_JSON_VALUE).characterEncoding("UTF-8")).andExpect(status().isOk());