ASP.NET系列：單元測試之SmtpClient

2019-11-14 14:14:59

字體：大中小

供稿：網(wǎng)友

使用SmtpClient發(fā)送Email時，我們可以創(chuàng)建ISmtpClient接口和SmtpClientWrapper適配類，在單元測試中對ISmtpClient進行Mock或自定義FackeSmtpClient，但nDumbster的Facke SMTP Server給我們提供了更直觀更簡單的方式進行單元測試。可以通過Nuget搜索nDumbster，這里使用的是netDumbster。

1.IEmailSender接口

public interface IEmailSender{    void SendMail(string from, string to, string subject, string body);}

2.SMTPAdapter實現(xiàn)類

public interfacepublic class SMTPAdapter : IEmailSender{    public void SendMail(string from, string to, string subject, string body)    {        var message = new MailMessage();        message.IsBodyHtml = true;        message.From = new MailAddress(from);        message.To.Add(new MailAddress(to));        message.Subject = subject;        message.Body = body;        using (var smtpClient = new SmtpClient())        {            if (smtpClient.Host == null)            {                smtpClient.Host = "localhost";            }            smtpClient.Send(message);        }    }}

3.使用nDumbster單元測試

public class SMTPAdapterTest{    [Fact]    public void SendMailTest()    {        SimpleSmtpServer server = SimpleSmtpServer.Start(25);        IEmailSender sender = new SMTPAdapter();        sender.SendMail("sender@here.com", "receiver@there.com", "subject", "body");        Assert.Equal(1, server.ReceivedEmailCount);        SmtpMessage mail = (SmtpMessage)server.ReceivedEmail[0];        Assert.Equal("sender@here.com", mail.Headers["From"]);        Assert.Equal("receiver@there.com", mail.Headers["To"]);        Assert.Equal("subject", mail.Headers["Subject"]);        Assert.Equal("body", mail.MessageParts[0].BodyData);        server.Stop();    }}