C# ASP.NET MVC5的正确单元测试

我有以下代码，但我不知道我为这些方法编写了哪些适当的单元测试，以及如何完成。基本上我想使用NUnit.Framework

提前感谢您提供的任何线索

   [AllowAnonymous]
        public ActionResult ForgotPassword(string id)
        {
            var model = new ForgotPasswordViewModel();

            if (!string.IsNullOrEmpty(id))
            {
                #region Process Reset Password Key

                try
                {
                    var forgotPasswordEvent = AppModel.ForgotPasswordEvents.SingleOrDefault(x => x.UIDHash == id);

                    if (forgotPasswordEvent != null)
                    {
                        var stringToHash = string.Format("{0}---{1}---{2}", forgotPasswordEvent.UID.ToString(),
                                    forgotPasswordEvent.UserId.ToString(), forgotPasswordEvent.Created.ToString());

                        var readyHash = SecurityHelper.GetHashString(stringToHash);

                        if (id == readyHash)
                        {
                            var forgotPasswordEventUserId = forgotPasswordEvent.UserId.ToString();
                            var realUser = AppModel.AspNetUsers.SingleOrDefault(x => x.Id == forgotPasswordEventUserId);

                            if (realUser != null)
                            {
                                var resetPasswordViewModel = new ResetPasswordViewModel();
                                resetPasswordViewModel.ResetPasswordData = id;
                                resetPasswordViewModel.UserName = realUser.UserName;

                                return RedirectToAction("ResetPassword", "Account", resetPasswordViewModel); // ResetPassword(resetPasswordViewModel);
                            }

                        }
                    }
                    else
                    {
                        return RedirectToAction("Index", "Home");
                    }
                }
                catch (Exception)
                {
                }

                #endregion
            }

            #region Check if the user is logged in and fill out fileds for him.

            var sessionManager = SessionWrapper.GetFromSession<SessionManager>("_SessionManager");

            if (sessionManager != null)
            {
                var clientId = sessionManager.AppUser.ClientId;

                if (clientId != null)
                {
                    model.Email = sessionManager.AppUser.EmailID;
                    model.UserName = sessionManager.AppUser.UserName;
                    model.IsLoggedInUser = true;
                }
            }

            #endregion

            return View(model);
        }

        [HttpPost]
        [AllowAnonymous]
        public ActionResult ForgotPassword(ForgotPasswordViewModel model, FormCollection formCollection)
        {
            if (ModelState.IsValid)
            {
                try
                {
                    #region Check user input

                    var user = AppModel.AspNetUsers.SingleOrDefault(x => x.UserName == model.UserName);

                    var areErrors = false;

                    if (user == null)
                    {
                        ModelState.AddModelError("UserDoesnotExist", DLMModelEntities.Properties.Resource.UserDoesNotExist);
                        areErrors = true;
                    }

                    if (user.EmailID != model.Email)
                    {
                        ModelState.AddModelError("EmailIsWrong", DLMModelEntities.Properties.Resource.EmailIsWrong);
                        areErrors = true;
                    }

                    if (areErrors)
                        return View(model);

                    #endregion

                    #region Send Email and inform user

                    try
                    {
                        var forgotPasswordEvent = new ForgotPasswordEvent();

                        var resetPasswordEmailUserState = new ResetPasswordEmailUserState();
                        resetPasswordEmailUserState.ForgotPasswordEventId = Guid.NewGuid();
                        resetPasswordEmailUserState.UserId = Guid.Parse(user.Id);
                        resetPasswordEmailUserState.Created = DateTime.Now;

                        forgotPasswordEvent.UID = resetPasswordEmailUserState.ForgotPasswordEventId;
                        forgotPasswordEvent.UserId = resetPasswordEmailUserState.UserId;
                        forgotPasswordEvent.IsSent = false;
                        forgotPasswordEvent.Created = resetPasswordEmailUserState.Created;

                        var stringToHash = string.Format("{0}---{1}---{2}", resetPasswordEmailUserState.ForgotPasswordEventId.ToString(),
                             resetPasswordEmailUserState.UserId.ToString(), resetPasswordEmailUserState.Created.ToString());

                        forgotPasswordEvent.UIDHash = SecurityHelper.GetHashString(stringToHash);

                        AppModel.ForgotPasswordEvents.Add(forgotPasswordEvent);
                        AppModel.SaveChanges();

                        var smtp = (SmtpSection)ConfigurationManager.GetSection("system.net/mailSettings/smtp");

                        // Set the MailerModel properties that will be passed to the MvcMailer object.
                        var m = new MailerModel();
                        m.UserName = user.UserName;
                        m.ResetPasswordLink = string.Format("{0}/{1}", Request.Url.AbsoluteUri, forgotPasswordEvent.UIDHash);
                        m.FromEmail = smtp.From;
                        m.Subject = AppConfiguration.ResetEmailSubject;
                        m.ToEmail = model.Email;                     

                        var client = new SmtpClientWrapper();

                        client.SendCompleted += (sender, e) =>
                        {
                            if (e.Error != null || e.Cancelled)
                            {
                                // Handle Error                                
                            }
                            else
                            {
                                try
                                {
                                    var forgotPasswordEventsToUpdate = AppModel.ForgotPasswordEvents.SingleOrDefault(x => x.UID == resetPasswordEmailUserState.ForgotPasswordEventId);

                                    if (forgotPasswordEventsToUpdate != null)
                                    {
                                        forgotPasswordEventsToUpdate.IsSent = true;
                                        AppModel.SaveChanges();
                                    }
                                }
                                catch (Exception ex)
                                {                                    
                                    ModelState.AddModelError("EmailEx", ex.Message);
                                }
                            }
                        };

                        Mailer.PasswordReset(m).SendAsync(resetPasswordEmailUserState, client);

                        model.IsResetEMailSent = true;
                    }
                    catch (Exception ex)
                    {
                        ModelState.AddModelError("EmailEx", ex.Message);
                    }

                    #endregion
                }
                catch (Exception ex)
                {
                    ModelState.AddModelError("EmailEx", ex.Message);
                }
            }

            return View(model);
        }

[AllowAnonymous]
public ActionResult ForgotPassword（字符串id）
{
var模型=新ForgotPasswordViewModel（）；
如果（！string.IsNullOrEmpty（id））
{
#区域进程重置密码密钥
尝试
{
var forgotPasswordEvent=AppModel.ForgotPasswordEvents.SingleOrDefault（x=>x.UIDHash==id）；
if（forgotPasswordEvent！=null）
{
var stringToHash=string.Format（“{0}-{1}-{2}”，forgotPasswordEvent.UID.ToString（），
forgotPasswordEvent.UserId.ToString（），forgotPasswordEvent.Created.ToString（））；
var readyHash=SecurityHelper.GetHashString（stringToHash）；
if（id==readyHash）
{
var forgotPasswordEventUserId=forgotPasswordEvent.UserId.ToString（）；
var realUser=AppModel.AspNetUsers.SingleOrDefault（x=>x.Id==forgotPasswordEventUserId）；
if（realUser！=null）
{
var resetPasswordViewModel=新的resetPasswordViewModel（）；
resetPasswordViewModel.ResetPasswordData=id；
resetPasswordViewModel.UserName=realUser.UserName；
返回RedirectToAction（“ResetPassword”、“Account”、resetPasswordViewModel）；//ResetPassword（resetPasswordViewModel）；
}
}
}
其他的
{
返回重定向到操作（“索引”、“主页”）；
}
}
捕获（例外）
{
}
#端区
}
#区域检查用户是否已登录并为其填写文件。
var sessionManager=SessionWrapper.GetFromSession（“_sessionManager”）；
if（sessionManager！=null）
{
var clientId=sessionManager.AppUser.clientId；
if（clientId！=null）
{
model.Email=sessionManager.AppUser.EmailID；
model.UserName=sessionManager.AppUser.UserName；
model.IsLoggedInUser=true；
}
}
#端区
返回视图（模型）；
}
[HttpPost]
[异名]
公共操作结果ForgotPassword（ForgotPasswordViewModel模型，FormCollection FormCollection）
{
if（ModelState.IsValid）
{
尝试
{
#区域检查用户输入
var user=AppModel.AspNetUsers.SingleOrDefault（x=>x.UserName==model.UserName）；
var ARERRORS=错误；
if（user==null）
{
AddModelError（“UserDoesnotExist”，dlmmodelenties.Properties.Resource.UserDoesnotExist）；
错误=正确；
}
if（user.EmailID！=model.Email）
{
AddModelError（“EmailIsError”，dlmmodelenties.Properties.Resource.EmailIsError）；
错误=正确；
}
如果（错误）
返回视图（模型）；
#端区
#区域发送电子邮件并通知用户
尝试
{
var forgotPasswordEvent=新forgotPasswordEvent（）；
var resetPasswordEmailUserState=新的resetPasswordEmailUserState（）；
resetPasswordEmailUserState.ForgotPasswordEventId=Guid.NewGuid（）；
resetPasswordEmailUserState.UserId=Guid.Parse（user.Id）；
resetPasswordEmailUserState.Created=DateTime.Now；
forgotPasswordEvent.UID=resetPasswordEmailUserState.ForgotPasswordEventId；
forgotPasswordEvent.UserId=resetPasswordEmailUserState.UserId；
forgotPasswordEvent.IsSent=false；
forgotPasswordEvent.Created=resetPasswordEmailUserState.Created；
var stringToHash=string.Format（“{0}-{1}-{2}”），resetPasswordEmailUserState.ForgotPasswordEventId.ToString（），
resetPasswordEmailUserState.UserId.ToString（），resetPasswordEmailUserState.Created.ToString（）；
forgotPasswordEvent.UIDHash=SecurityHelper.GetHashString（stringToHash）；
AppModel.ForgotPasswordEvents.Add（forgotPasswordEvent）；
AppModel.SaveChanges（）；
var smtp=（SmtpSection）ConfigurationManager.GetSection（“system.net/mailSettings/smtp”）；
//设置将传递给MvcMailer对象的MailerModel属性。
var m=新的MailerModel（）；
m、 用户名=user.UserName；
m、 ResetPasswordLink=string.Format（“{0}/{1}”，Request.Url.AbsoluteUri，forgotPasswordEvent.UIDHash）；
m、 FromEmail=smtp.From；
m、 Subject=AppConfiguration.ResetEmailSubject；
m、 ToEmail=model.Email；
var client=new-SmtpClientWrapper（）；
client.SendCompleted+=（发件人，e）=>
{