ASP.NET MVC 1.0 Test Driven Development: Problem - Design - Solution

13.3. Solution

We will start off with a simple test to get the list of system templates. We will mock the call to the service class to return some Template objects:

[Test]
public void list_returns_system_templates()
{
    var mockSer = new Mock<ITemplateService>();
    mockSer.Expect(s =< s.Get()).Returns(new List<Template>
                                             {
                                                 new Template(),
                                                 new Template()
                                             });
    var con = new TemplateController(mockSer.Object);
    var result = con.List();
    Assert.IsNotNull(result);
    result.AssertViewResult(con, null, "list");
    Assert.IsInstanceOfType(typeof(IList<Template>), con.ViewData.Model);
    Assert.AreEqual(4, (con.ViewData.Model as IList<Template>).Count);
}

Next step, let's make the solution compile. Create the controller with our List action as follows:

public class TemplateController : Controller
{
    [AcceptVerbs(HttpVerbs.Get)]
    [Authorize]
    public ActionResult List()
    {

return null;
    }
}

Create the model class Template:

public class Template
{
}

Let's add the extra plumbing to make it pass the test. Add and initialize the template service with the TemplateController constructor:

public ITemplateService Service { get; set; }

public TemplateController():this(null)
{

}

public TemplateController(ITemplateService service)
{
    Service = service;
}

The test should now pass. It is a good idea to see how things are looking with a view to make sure that things are working. Let's create a test for the service class. We will go ahead and mock the repository interface:

[Test] public void get_should_return_list_of_templates() ...