Testing the User.IsInRole in MVC.NET

Question

Dear All,

I am trying to test the User.IsInRole("Administrator") in my application, and actually trying to assign the User Role to ("Administrator") so that my test will pass. I am using Scott Hanselman's MvcMockHelpers to do this, and at the moment I have the following test.

    [Test]
    public void Create_CanInsertNewArticleView_IsNotNull()
    {
        // Arrange
        var controller = new ArticleController();

        MockRepository mockRepo = new MockRepository();
        var fakeContext = MvcMockHelpers.FakeHttpContext(mockRepo, "~/Article/Create");
        fakeContext.User.IsInRole("Administrator");

        // Act
        Article fakeArticle = FakeObjects.ReturnFakeArticle();

        var result = controller.Create(fakeArticle) as ViewResult;

        // Assert
        Assert.IsNotNull(result);
    }

However the actual controller's User is null at the moment.

Can anyone help me out and tell me what the correct test should be, to User.IsInRole("Administrator")

Thanks for your help and time

Johann

Answer 1

See this related answer for details.

---

Here's the code snippet from the other answer converted to Rhino Mocks:

var user = new GenericPrincipal(new GenericIdentity(string.Empty), null);
var httpCtx = MockRepository.GenerateStub<HttpContextBase>();
httpCtx.User = user;

var controllerCtx = new ControllerContext();
controllerCtx.HttpContext = httpCtx;

sut.ControllerContext = controllerCtx;

Answer 2

You'll have to mock an IPrincipal for your user object, set it up so that .IsInRole("Administrator") returns true, and then set your fakeContext up to return that IPrincipal for the.User property. It would be something like this:

EDIT: It turns out the OP is using Rhino Mocks, and the code I provided was for Moq. Here's an attempt att writing Rhino code, although I have never actually used Rhino myself. The original Moq code can be found below.

In Rhino Mocks, you'll want to add another helper method, or change the current one, so you have the following:

public static HttpContextBase FakeHttpContext(this MockRepository mocks, string url, IPrincipal user)
{
        // Do the same setup as Scott does...

        // ...and add this:
        SetupResult.For(context.User).Return(user);

        mocks.Replay(context);
        return context,
}

Then you declare and set up your IPrincipal mock object like this before the call to FakeHttpContext, and send the mock object in as the third parameter.

---

In Moq:

fakeContext = MvcMockHelpers.FakeHttpContext("~/Article/Create");
fakeUser = new Mock<IPrincipal>();
fakeUser.Expect(usr => usr.IsInRole(It.IsAny<String>())).Returns(true);
fakeContext.Expect(context => context.User).Returns(fakeUser.Object);

(Disclaimer: It was a while since I wrote a unit test, and this code has not been tested even for compilation errors. Hence, there might be some wrinkles that need to be ironed out before you can use this code, but you get the general idea...)