c# - How to add claims in a mock ClaimsPrincipal

Question

I am trying to unit test my controller code which gets the information from the ClaimsPrincipal.Current. In the controller code I

public class HomeController {
    public ActionResult GetName() {
        return Content(ClaimsPrincipal.Current.FindFirst("name").Value);
    }
}

And I am trying to mock my ClaimsPrincipal with claims but I still don't have any mock value from the claim.

// Arrange
IList<Claim> claimCollection = new List<Claim>
{
    new Claim("name", "John Doe")
};

var identityMock = new Mock<ClaimsIdentity>();
identityMock.Setup(x => x.Claims).Returns(claimCollection);

var cp = new Mock<ClaimsPrincipal>();
cp.Setup(m => m.HasClaim(It.IsAny<string>(), It.IsAny<string>())).Returns(true);
cp.Setup(m => m.Identity).Returns(identityMock.Object);

var sut = new HomeController();

var contextMock = new Mock<HttpContextBase>();
contextMock.Setup(ctx => ctx.User).Returns(cp.Object);

var controllerContextMock = new Mock<ControllerContext>();
controllerContextMock.Setup(con => con.HttpContext).Returns(contextMock.Object);
controllerContextMock.Setup(con => con.HttpContext.User).Returns(cp.Object);

sut.ControllerContext = controllerContextMock.Object;

// Act
var viewresult = sut.GetName() as ContentResult;

// Assert
Assert.That(viewresult.Content, Is.EqualTo("John Doe"));

The viewresult.Content is empty as I run the unit test. Any help if I can add the mock claim. Thanks.

Answer 1

You don't need to mock ClaimsPrincipal it has no outside dependencies and you can created it un-mocked:

var claims = new List<Claim>() 
{ 
    new Claim(ClaimTypes.Name, "username"),
    new Claim(ClaimTypes.NameIdentifier, "userId"),
    new Claim("name", "John Doe"),
};
var identity = new ClaimsIdentity(claims, "TestAuthType");
var claimsPrincipal = new ClaimsPrincipal(identity);

And I'm not sure what you are testing here. Certainly "John Doe" will not be part of viewResult.Content because it is never been set to this.