How to write unit test case with mockito for this controller class

Question

This is my controller class. Now that i want to write unit test cases for the below controller class using mockito

can anyone help me out from this?

@Controller
public class LoginController {

    @Autowired
    @Qualifier("skillService")
    private SkillService skillService;

    @Autowired
    private SkillReferenceData skillReferenceData;

    @Autowired
    private EmployeeValidator employeeValidator;

    @RequestMapping(value = "/loginview.html", method = RequestMethod.GET)
    @PreAuthorize("hasAuthority('ROLE_ANONYMOUS')")
    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse respresultonse) throws Exception {
        ModelAndView model = new ModelAndView("login");
        return model;
    }

    @RequestMapping("/login.htm")
    protected ModelAndView onSubmit(@ModelAttribute("userVB") UserVB userVB,
        BindingResult result, HttpServletRequest request,
    HttpServletResponse response) throws Exception {
        return new ModelAndView("login");
    }

}

Answer 1

Create an instance of your Controller class by:

@InjectMocks
LoginController loginController;

By using this annotation you can also access and mock your private variables like skillService, skillReferenceData, employeeValidator by using:

@Mock(name = "skillService")
SkillService mockSkillService = createMock(SkillService.class);

Don't forget to initialize your Mockito annotations by adding MockitoAnnotations.initMocks(this); before your unit tests.

Finally, you can mock your constructors by using:

Mockito.when(new ModelAndView(any(String.class).thenReturn(null)));