Spring MVC controller testing with gradle

When I moved my application form Maven (Eclipse) to Gradle (InteliJ) All my Controller tests stopped working. Tests were working on old application with Maven.

My Controller method:

@RequestMapping(value = "submit", method = RequestMethod.POST, consumes = 

MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody FormResponse submitForm(@RequestBody TagData form) throws BusinessException {
        tagService.saveTag(form);
        return FormResponse.success("admin.tag.saved");

}

My test:

    @RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/pl/dk/web/controllers/controllers-test-context.xml"})
@WebAppConfiguration
public class TagControllerTest {

    @Autowired
    TagController controller;

    @Autowired
    WebApplicationContext webContext;

    @Autowired
    TagManagerService tagService;

    private MockMvc mockMvc;

    @Before
    public void setUp() {
        mockMvc = MockMvcBuilders.webAppContextSetup(webContext).build();
        EasyMock.reset(tagService);
    }

    @Test
    public void testSave() throws Exception {
        TagData form = new TagData();
        form.setName("Test tag");
        form.setDescription("Test description");

        EasyMock.expect(tagService.saveTag(form)).andReturn(1L);
        controller.tagService = tagService;

        RequestBuilder reqBuilder = MockMvcRequestBuilders.post("/admin/recipes/tag/submit").contentType(MediaType.APPLICATION_JSON)
                .content(TestUtil.convertObjectToString(form));
        MvcResult result = mockMvc.perform(reqBuilder).andExpect(MockMvcResultMatchers.status().isOk()).andReturn();
        Assert.assertNotNull(result);
    }

In my worst scenario, this problem may be connected with InteliJ integration with gradle or something, and I am fighting ghosts here. Can anyone help me with this?

My error:

java.lang.AssertionError: Status 
Expected :200
Actual   :415