How mock User.Identity

Question

I want to testing one method in controller

public class CardController : Controller { IRepository repository; public CardController(IRepository repo) { repository = repo; } [AcceptVerbs("Get", "Post")] public IActionResult CheckPublicID(string PublicID) { if (repository.CheckCardName(PublicID, User.Identity.Name)) { return Json(true); } return Json(false); }

How i can add mock User.Identity.Name in HttpContext to my mock controller?

[Fact] public void CheckPublicIDIsEmpty() { Mock<IRepository> mock = new Mock<IRepository>(); mock.Setup(r => r.CheckCardName("TestID", "TestName")).Returns(false); //mock User.Identity.Name CardController cardController = new CardController(mock.Object); var result = cardController.CheckPublicID("TestID"); var viewResult = Assert.IsType<JsonResult>(result); Assert.Equal(false, viewResult.Value); }

*change Assert

User property actually refers to HttpContext - public ClaimsPrincipal User => HttpContext?.User; so you need to mock HttpContext instead. See this reply. Does it answer your question? — AndrewSilver
– AndrewSilver, Commented Aug 23, 2021 at 8:29

aamd · Accepted Answer · 2021-08-23 08:52:22Z

You need to mock the HttpContext on the controller for example :

var httpContext = new DefaultHttpContext() { User = new System.Security.Claims.ClaimsPrincipal(new GenericIdentity("username")) }; var actionContext = new ActionContext(httpContext, new Microsoft.AspNetCore.Routing.RouteData(), new Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor()); cardController.ControllerContext = new Microsoft.AspNetCore.Mvc.ControllerContext(actionContext);

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