Unit Testing MVC 4 RedirectToAction

Question

I am trying to unit test the redirection of my controller in MVC 4 .Net 4.5. Here is an example:

    [TestMethod]
    public void Register_PassValidModel_RedirectToHomeIndexShouldBeTrue()
    {
        //Arrange
        var registerModel = new RegisterModel
        {
            Email = "[email protected]",
            Password = "password"
        };

        //Assign
        var result = _controller.Register(registerModel) as RedirectToRouteResult;

        //Assert
        result.RouteValues["Action"].ShouldBeEqual("Index");
        result.RouteValues["Controller"].ShouldBeEqual("Home");
    }

Here is the controller:

    [HttpPost]
    public ActionResult Register(RegisterModel model)
    {
         if (ModelState.IsValid)
        {
            var userToRegister = new User { Email = model.Email, Password = model.Password };
            var service = new UserService(_userRepository);

            User user = service.RegisterUser(userToRegister);

            if (user.UserErrorMessages.Count != 0)
            {
                user.UserErrorMessages.ForEach(x => ModelState.AddModelError("", x));
                return View(model);
            }

            SetCookie(model.Email);

            return RedirectToAction("Index", "Home");
        }
        return View(model);
    }

The issue the variable result in the Unit Test is null. I found this code from someone who was working on a MVC 2 project and it seemed to work for him. Has something changed with MVC 4?

Thanks in advance!

Solution

Try this one hope it will useful for you

 var result= (RedirectToRouteResult)controller.Register(registrModel);

           result.RouteValues["action"].Equals("Index");
           result.RouteValues["controller"].Equals("Home");

           Assert.AreEqual("Index", action.RouteValues["action"]);
           Assert.AreEqual("Home", action.RouteValues["controller"]);

Comments

[Felix]

Are you sure action actually returns RedirectToAction("Index", "Home")? There should be some logic in the Register action. If it returns any other kind of result and you are trying to make it as RedirectToRouteResult than you will get null.

[Rickard]

I got a RedirectToRouteResult object back when I tried. Are you sure your controller looks just like that?

[VJAI]

I guess you may be getting a ViewResult

[GetFuzzy]

This should be marked as the correct answer. Also a duplicate of stackoverflow.com/questions/7601972/…

[Richard Moore]

Worked for me. but had to change the Assert.AreEqual("Index", action.RouteValues["action"]); to Assert.AreEqual("Index", result.RouteValues["action"]); - and left out result.RouteValues["action"].Equals("Index");