public void CancelPayTest(long cardOrCode)
        {
            var user = new ClaimsPrincipal(new ClaimsIdentity(new Claim[]
            {
                new Claim(ClaimTypes.Name, "name"),
                new Claim(ClaimTypes.Role, "role")
            }, "mock"));

            cart.ControllerContext = new ControllerContext()
            {
                HttpContext = new DefaultHttpContext()
                {
                    User = user
                }
            };

            IActionResult cancelPay = cart.CancelPay(cardOrCode);

            Assert.IsType <RedirectToActionResult>(cancelPay);
        }