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

        public void MessageSubject_WhenEmpty_WithHeaderSet_ShouldDiscardHeaderAndLeaveSubjectEmpty()
        {
            _message.From = new MailAddress("[email protected]");
            _message.Headers.Add("Subject", "should be removed");
            _message.Subject = string.Empty;
            _message.PrepareHeaders(true, false);

            Assert.Equal(string.Empty, _message.Subject);
            Assert.Null(_message.Headers["Subject"]);
        }