public void TestUnsuccessfulLogin()
        {
            // Arrange
            var userStore = new Mock<IUserStore<ApplicationUser>>();
            var userManager = new Mock<UserManager<ApplicationUser>>(userStore.Object);
            var loginModel = new LoginViewModel
            {
                UserName = "******",
                Password = "******",
                RememberMe = false
            };
            var returnUrl = "/foo";
            var user = new ApplicationUser
            {
                UserName = loginModel.UserName
            };
            var identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie);
            identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, user.Id));
            identity.AddClaim(new Claim(ClaimTypes.Name, user.UserName));

            userManager.Setup(um => um.FindAsync(loginModel.UserName, loginModel.Password)).Returns(Task.FromResult<ApplicationUser>(null));

            var controller = new AccountController(userManager.Object);
            var helper = new MvcMockHelper(controller);

            // Act
            var actionResult = controller.Login(loginModel, returnUrl).Result;

            // Assert
            Assert.IsTrue(actionResult is ViewResult);
            var errors = controller.ModelState.Values.First().Errors;
            Assert.AreEqual(1, errors.Count());
        }
        public void TestSuccessfulLogin()
        {
            // Arrange
            var userStore = new Mock<IUserStore<ApplicationUser>>();
            var userManager = new Mock<UserManager<ApplicationUser>>(userStore.Object);
            var loginModel = new LoginViewModel { 
                UserName = "******",
                Password = "******",
                RememberMe = false
            };
            var returnUrl = "/foo";
            var user = new ApplicationUser
            {
                UserName = loginModel.UserName
            };
            var identity = new ClaimsIdentity(DefaultAuthenticationTypes.ApplicationCookie);
            identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, user.Id));
            identity.AddClaim(new Claim(ClaimTypes.Name, user.UserName));

            userManager.Setup(um => um.FindAsync(loginModel.UserName, loginModel.Password)).Returns(Task.FromResult(user));
            userManager.Setup(um => um.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie)).Returns(Task.FromResult(identity));

            var controller = new AccountController(userManager.Object);
            var helper = new MvcMockHelper(controller);

            // Act
            var actionResult = controller.Login(loginModel, returnUrl).Result;

            // Assert
            var redirectResult = actionResult as RedirectResult;
            Assert.IsNotNull(redirectResult);
            Assert.AreEqual(returnUrl, redirectResult.Url);

            Assert.AreEqual(loginModel.UserName, helper.OwinContext.Authentication.AuthenticationResponseGrant.Identity.Name);
            Assert.AreEqual(DefaultAuthenticationTypes.ExternalCookie, helper.OwinContext.Authentication.AuthenticationResponseRevoke.AuthenticationTypes.First());
        }