Question

See the following Mock Test by using Spring/Spring-MVC

public class OrderTest {

    // SimpleFormController
    private OrderController controller;
    private OrderService service;

    private MockHttpServletRequest request;

    @BeforeMethod
    public void setUp() {

        request = new MockHttpServletRequest();
        request.setMethod("POST");

        Integer orderNumber = 421;
        Order order = new Order(orderNumber);

        // Set up a Mock service
        service = createMock(OrderService.class);
        service.save(order);

        replay(service);

        controller = new OrderController();
        controller.setService(service);
        controller.setValidator(new OrderValidator());

        request.addParameter("orderNumber", String.valueOf(orderNumber));
    }

    @Test
    public void successSave() {
        controller.handleRequest(request, new MockHttpServletResponse());

        // Our OrderService has been called by our controller
        verify(service);
    }

    @Test
    public void failureSave() {
        // Ops... our orderNumber is required
        request.removeAllParameters();

        ModelAndView mav = controller.handleRequest(request, new MockHttpServletResponse());

        BindingResult bindException = (BindingResult) mav.getModel().get(BindingResult.MODEL_KEY_PREFIX + "command");

        assertEquals("Our Validator has thrown one FieldError", bindException.getAllErrors(), 1);
    }

}

As you can see, i do as proposed by Triple A pattern

• Arrange (setUp method)
• Act (controller.handleRequest)
• Assert (verify and assertEquals)

But i would like to test both Mock and Implementation class (OrderService) by using this single Test class. So in order to retrieve my Implementation, i re-write my class as follows

@ContextConfiguration(locations="/app.xml")
public class OrderTest extends AbstractTestNGSpringContextTests {



}

So how should i write my single test to Arrange both Mock and Implementation OrderService without change my Test method (sucessSave and failureSave)

I am using TestNG, but you can show in JUnit if you want

regards,

Answer 1

Again to me it looks like two different tests but if you are going to be adamant 🙂 here it is

@SpringJunit4Runner(....="app.xml")
public class OrderTest {

    @Resource
    private OrderController controller; //bean from app.xml

    @Resource
    private OrderService service; // actual order service
    private OrderService mockOrderService; //some mock order service
    private MockHttpServletRequest request;

    @BeforeMethod
    public void setUp() {
        request = new MockHttpServletRequest();
        request.addParameter("orderNumber", String.valueOf(orderNumber));
    }

    @Test
    public void successSave() {
        //test with orderService the way you would do it
    }

    @Test
    @DirtiesContext
    //need the annotation because we are changing our context beans i.e, ordercontroller
    //so for the next test the context would be recreated
    public void successSaveWithMock() {
        mockOrderService = //create mock service
        orderController.setOrderService(mockOrderService);
        //do the test with mock
    }
}

This is for JUnit4 but for your TestNG it should be same/similar principle. Again I am assuming you have done your research about why you need an unit test and an integration test in the same file !!!