public void AccountController_regristration_succeed()
        {
            //Arrange
            string _email = "*****@*****.**";

            var registerViewModel = new RegisterViewModel() { Email = _email, Password = _email };
            var appUser = new ApplicationUser{ UserName = registerViewModel.Email, Email = registerViewModel.Email  };

            var userStoreMock = new Mock<IUserStore<ApplicationUser>>();

            Mock<ApplicationUserManager> userManagerMock = new Mock<ApplicationUserManager>(userStoreMock.Object);
            userManagerMock.Setup(mck => mck.CreateAsync(It.IsAny<ApplicationUser>(), It.IsAny<string>())).Returns((ApplicationUser apUsr, string pwd) => {

                if (appUser != null && appUser.UserName == _email && appUser.Email == _email && !String.IsNullOrEmpty(pwd) && pwd == _email)
                    return Task.FromResult<IdentityResult>( IdentityResult.Success);

                return Task<IdentityResult>.Run<IdentityResult>(() => IdentityResult.Failed());
            
            });


            var authManagerMck = new Mock<IAuthenticationManager>();
            var  signInManagerMck = new Mock<ApplicationSignInManager>(userManagerMock.Object, authManagerMck.Object);


            var accountController = new AccountController(userManagerMock.Object, signInManagerMck.Object);

            //Act

           var tsk =  accountController.Register(registerViewModel);
           tsk.Wait();
           var reslt = tsk.Result;


            //Assert
           userManagerMock.Verify(mck => mck.CreateAsync(It.IsAny<ApplicationUser>(), It.IsAny<string>()));
            Assert.IsType<RedirectToRouteResult>(reslt);

        }
        public void AccountController_Login_Denied()
        {
            //Arrange
            string _email = "*****@*****.**";

            var registerViewModel = new RegisterViewModel() { Email = _email, Password = _email };
            var appUser = new ApplicationUser { UserName = registerViewModel.Email, Email = registerViewModel.Email };

            var userStoreMock = new Mock<IUserStore<ApplicationUser>>();

            Mock<ApplicationUserManager> userManagerMock = new Mock<ApplicationUserManager>(userStoreMock.Object);
            userManagerMock.Setup(mck => mck.CreateAsync(It.IsAny<ApplicationUser>(), It.IsAny<string>())).Returns((ApplicationUser apUsr, string pwd) =>
            {
                return Task<IdentityResult>.Run<IdentityResult>(() => IdentityResult.Failed());

            });

            var authManagerMck = new Mock<IAuthenticationManager>();

            //ApplicationSignInManager signInManager = Mock.Of<ApplicationSignInManager>();
            var signInManagerMck = new Mock<ApplicationSignInManager>(userManagerMock.Object, authManagerMck.Object);
            var accountController = new AccountController(userManagerMock.Object, signInManagerMck.Object);

            //Act

            var tsk = accountController.Register(registerViewModel);
            tsk.Wait();
            var reslt = tsk.Result;


            //Assert
            userManagerMock.Verify(mck => mck.CreateAsync(It.IsAny<ApplicationUser>(), It.IsAny<string>()));
            Assert.IsType<ViewResult>(reslt);
            Assert.IsType<RegisterViewModel>(((ViewResult)reslt).Model);

        }
        public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl)
        {
            if (User.Identity.IsAuthenticated)
            {
                return RedirectToAction("Index", "Manage");
            }

            if (ModelState.IsValid)
            {
                // Get the information about the user from the external login provider
                var info = await AuthenticationManager.GetExternalLoginInfoAsync();
                if (info == null)
                {
                    return View("ExternalLoginFailure");
                }
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var result = await UserManager.CreateAsync(user);
                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }
        public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var result = await UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);
                    
                    // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                    // Send an email with this link
                    // string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                    // var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
                    // await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");

                    return RedirectToAction("Index", "Home");
                }
                AddErrors(result);
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }