public void TestSuccessfulLogin()
        {
            // Arrange
            var userStore = new Mock<IUserStore<ApplicationUser>>();
            var userManager = new Mock<UserManager<ApplicationUser>>(userStore.Object);
            var loginModel = new LoginViewModel {
                Email = "*****@*****.**",
                Password = "******",
                RememberMe = false
            };
            var returnUrl = "/foo";
            var user = new ApplicationUser
            {
                UserName = loginModel.Email
            };
            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.Email, 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.Email, helper.OwinContext.Authentication.AuthenticationResponseGrant.Identity.Name);
            Assert.AreEqual(DefaultAuthenticationTypes.ExternalCookie, helper.OwinContext.Authentication.AuthenticationResponseRevoke.AuthenticationTypes.First());
        }
        public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            // This doesn't count login failures towards account lockout
            // To enable password failures to trigger account lockout, change to shouldLockout: true
            var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
            switch (result)
            {
                case SignInStatus.Success:
                    return RedirectToLocal(returnUrl);
                case SignInStatus.LockedOut:
                    return View("Lockout");
                case SignInStatus.RequiresVerification:
                    return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });
                case SignInStatus.Failure:
                default:
                    ModelState.AddModelError("", "Invalid login attempt.");
                    return View(model);
            }
        }
        public void TestUnsuccessfulLogin()
        {
            // Arrange
            var userStore = new Mock<IUserStore<ApplicationUser>>();
            var userManager = new Mock<UserManager<ApplicationUser>>(userStore.Object);
            var loginModel = new LoginViewModel
            {
                Email = "*****@*****.**",
                Password = "******",
                RememberMe = false
            };
            var returnUrl = "/foo";
            var user = new ApplicationUser
            {
                UserName = loginModel.Email
            };
            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.Email, 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());
        }