Issue
I am using JUnit4 with Spring Web MVC Test and I have test class for a Controller.
The Controller handles a POST request to "/test" with JSON body content. I've tested this method manually using Postman and I get a 400 Bad Request response, as expected, since the "name" property is empty.
POST /Server/test HTTP/1.1
Host: localhost:8080
Content-Type: application/json
Cache-Control: no-cache
{
"name": ""
}
However, when I send the same request to my Controller through my test class, I get a 415 (Unsupported Media Type) error, even though the request is the same.
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@WebAppConfiguration
public class MyControllerTest {
@Configuration
public static class MyControllerTestConfiguration {
@Bean
public MyController myController() {
return new MyController();
}
}
private MockMvc mockMvc;
@Before
public void setup() {
mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
}
@Test
public void shouldReturnBadRequest_IfBodyIsEmpty() throws Exception {
// Works fine
mockMvc.perform(post("/test"))
.andExpect(status().isBadRequest());
}
@Test
public void shouldReturnBadRequest_IfInvalidFields() throws Exception {
MyDTO dto = new MyDTO();
dto.setName("");
// Jackson object mapper
ObjectMapper mapper = new ObjectMapper();
// TEST FAIL: Gets 415 error
mockMvc.perform(
post("/test")
.content(mapper.writeValueAsString(dto))
.characterEncoding("UTF-8")
.contentType(MediaType.APPLICATION_JSON)
)
.andDo(print())
.andExpect(status().isBadRequest());
}
}
And here's MyController.
@RestController
@EnableWebMvc
public class MyController {
@RequestMapping(value = "/test", method = RequestMethod.POST)
public void init(@javax.validation.Valid @RequestBody MyDTO dto) {
}
@ExceptionHandler(MethodArgumentNotValidException.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ResponseBody
public void validationError(MethodArgumentNotValidException ex) {
}
}
And here's MyDTO.
@lombok.Data
public class MyDTO {
private String name;
}
I have Jackson in my dependencies as well.
Here's what the test class's request looks like when it's printed to the console:
MockHttpServletRequest:
HTTP Method = POST
Request URI = /test
Parameters = {}
Headers = {Content-Type=[application/json;charset=UTF-8]}
Body = {"name":""}
Session Attrs = {}
Handler:
Type = controller.MyController
Method = public void controller.MyController.init(dto.MyDTO)
Async:
Async started = false
Async result = null
Resolved Exception:
Type = org.springframework.web.HttpMediaTypeNotSupportedException
ModelAndView:
View name = null
View = null
Model = null
FlashMap:
Attributes = null
MockHttpServletResponse:
Status = 415
Error message = null
Headers = {Accept=[application/octet-stream, text/plain, application/xml, text/xml, application/x-www-form-urlencoded, application/*+xml, multipart/form-data, */*]}
Content type = null
Body =
Forwarded URL = null
Redirected URL = null
Cookies = []
Anyways, why would I be getting this error? The request looks perfectly fine to me. Any help is appreciated. Thanks.
Solution
I've solved the issue by annotating my MyControllerTestConfiguration inner static class with @EnableWebMvc.
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@WebAppConfiguration
public class MyControllerTest {
@Configuration
@EnableWebMvc // <------------ added this
public static class MyControllerTestConfiguration {
@Bean
public SetupController setupController() {
return new MyController();
}
}
Answered By - the duck wizard
Answer Checked By - Timothy Miller (JavaFixing Admin)
