Examples: SMTP

Simple

// Arrange
var smtpStubServer = new SmtpStubServer(IPAddress.Loopback, 5000,
	() => Encoding.ASCII.GetBytes("220 SMTP StubServer\r\n"));

smtpStubServer
	.When(bytes => Encoding.ASCII.GetString(bytes).StartsWith("EHLO"))
	.Return(() => Encoding.ASCII.GetBytes("250-smtp.example.com Hello www.example.org [123.0.0.321]\r\n"))
	.Then(() => Encoding.ASCII.GetBytes("250-SIZE 14680064\r\n"))
	.Then(() => Encoding.ASCII.GetBytes("250-PIPELINING\r\n"))
	.Then(() => Encoding.ASCII.GetBytes("250 HELP\r\n"));

smtpStubServer
	.When(bytes => Encoding.ASCII.GetString(bytes).Equals("MAIL FROM:<jane@contoso.com>\r\n"))
	.Return(() => Encoding.ASCII.GetBytes("250 Ok\r\n"));

smtpStubServer
	.When(bytes => Encoding.ASCII.GetString(bytes).Equals("RCPT TO:<ben@contoso.com>\r\n"))
	.Return(() => Encoding.ASCII.GetBytes("250 Ok\r\n"));

smtpStubServer
	.When(bytes => Encoding.ASCII.GetString(bytes).Equals("DATA\r\n"))
	.Return(() => Encoding.ASCII.GetBytes("354 End data with <CR><LF>.<CR><LF>\r\n"));

smtpStubServer
	.When(bytes => Encoding.ASCII.GetString(bytes).Contains("\r\n.\r\n"))
	.Return(() => Encoding.ASCII.GetBytes("250 Ok: queued as 12345\r\n"));

smtpStubServer
	.When(bytes => Encoding.ASCII.GetString(bytes).Equals("QUIT\r\n"))
	.Return(() => Encoding.ASCII.GetBytes("221 Bye\r\n"));

var smtpClient = new SmtpClient("127.0.0.1", 5000);

var message = new MailMessage(
	new MailAddress("jane@contoso.com", "Jane Clayton"),
	new MailAddress("ben@contoso.com"))
{
	Body = "This is a test e-mail message sent by an application.",
	BodyEncoding = Encoding.UTF8,
	Subject = "test message 1",
	SubjectEncoding = Encoding.UTF8
};

// Act
TestDelegate testDelegate = () => smtpClient.Send(message);

// Assert
Assert.DoesNotThrow(testDelegate);

// Cleanup
message.Dispose();
smtpClient.Dispose();
smtpStubServer.Dispose();