Add support of HttpMessageConvertersAutoConfiguration for @AutoConfigureMockMvc

[tillias]

Hello folks,

I'd like to test some rest controller. I can't use @WebMvcTest cause my security config uses JWT Token Provider which is @component itself and will be filtered out by @WebMvcTest

I can't use @SpringBootTest either, because it ignores HttpMessageConvertersAutoConfiguration and I get during test only (this means it works in prod)

org.springframework.http.converter.HttpMessageNotWritableException

Can you please add support of HttpMessageConvertersAutoConfiguration for @AutoConfigureMockMvc?

Here is sample code:

@SpringBootTest(classes = {SomeControllerUnderTest.class})
@AutoConfigureMockMvc
@WithMockUser
class SomeControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @MockBean
    private SomeMockService service;

    @Test
    void foo() throws Exception {

       ... setup mock ...

        mockMvc.perform(get("/api/some"))
            .andExpect(status().isOk())
            .andExpect(content().contentType(MediaType.APPLICATION_JSON_VALUE));
    }
}

If I change @SpringBootTest and remove classes it works just fine, but initializes ALL the crap I don't need:

@SpringBootTest
@AutoConfigureMockMvc
@WithMockUser
class SomeControllerTest {

Thanks!

[frekele]

I have similar behavior too.

[wilkinsona]

HTTP message converter auto-configuration will be included if you use @AutoConfigureWebMvc. I don't think it should be added to the @AutoConfigureMockMvc as it's not specific to MockMvc-based testing. @WebMvcTest uses both @AutoConfigureWebMvc and @AutoConfigureMockMvc and it looks like you want both as well.

[tillias]

@wilkinsona many thanks, it works!

@frekele if you're interested here is custom annotation you can use: https://stackoverflow.com/questions/64648893/autoconfiguremockmvc-how-to-set-message-converters

[rehevkor5]

Would be nice to add some explanation about this into https://spring.io/guides/gs/testing-web/ which shows use of @SpringBootTest with @AutoConfigureMockMvc but doesn't mention anything about it causing HttpMediaTypeNotAcceptableException or HttpMessageNotWritableException or why or what to do about it.

[wilkinsona]

@rehevkor5 Could you please make that suggestion in the guide's repo: https://github.com/spring-guides/gs-testing-web/issues?