System.Net.Mail.Tests.MessageHeaderBehaviorTest.Message_WithNoXSender_ShouldSetXSenderToFromAddress C# (CSharp) Method

        public void Message_WithNoXSender_ShouldSetXSenderToFromAddress()
        {
            _message.From = new MailAddress("[email protected]");
            _message.HeadersEncoding = Encoding.UTF8;

            _message.PrepareEnvelopeHeaders(true, false);
            _message.EncodeHeaders(_message.Headers, false);
            _message.EncodeHeaders(_message.EnvelopeHeaders, false);

            //if the X-Sender was not set, it will be set in EnvelopeHeaders instead of Headers.
            Assert.Equal("[email protected]", _message.EnvelopeHeaders["X-Sender"]);
        }