Mock versus Implementation. How to share both approaches in a single Test class ?

Posted by Arthur Ronald F D Garcia on Stack Overflow See other posts from Stack Overflow or by Arthur Ronald F D Garcia
Published on 2010-03-17T20:50:31Z Indexed on 2010/03/17 21:01 UTC
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Hi,

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,

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