public void Can_Login_With_Valid_Credentials()
        {
            // Arrange - create a mock authentication provider
            Mock<IAuthProvider> mock = new Mock<IAuthProvider>();
            mock.Setup(m => m.Authenticate("admin", "secret")).Returns(true);

            // Arrange - create the view model
            LogOnViewModel model = new LogOnViewModel
            {
                UserName = "******",
                Password = "******"
            };

            // Arrange - create the controller
            AccountController target = new AccountController(mock.Object);

            // Act - authenticate using valid credentials
            ActionResult result = target.LogOn(model, "/MyURL");

            // Assert
            Assert.IsInstanceOfType(result, typeof(RedirectResult));
            Assert.AreEqual("/MyURL", ((RedirectResult)result).Url);
        }
        public void Cannot_Login_With_Invalid_Credentials()
        {
            // Arrange - create a mock authentication provider
            Mock<IAuthProvider> mock = new Mock<IAuthProvider>();
            mock.Setup(m => m.Authenticate("badUser", "badPass")).Returns(false);

            // Arrange - create the view model
            LogOnViewModel model = new LogOnViewModel
            {
                UserName = "******",
                Password = "******"
            };

            // Arrange - create the controller
            AccountController target = new AccountController(mock.Object);

            // Act - authenticate using valid credentials
            ActionResult result = target.LogOn(model, "/MyURL");

            // Assert
            Assert.IsInstanceOfType(result, typeof(ViewResult));
            Assert.IsFalse(((ViewResult)result).ViewData.ModelState.IsValid);
        }