public void Context()
        {
            var parts = new List<EmailPart>
                            {
                                new UnknownPart()
                            };

            var emailHtmlBuilder = new EmailHtmlBuilder();
            _exception = Should.Throw<EmailMakerException>(() => emailHtmlBuilder.BuildHtmlEmail(parts));
        }
        public void Context()
        {
            var parts = new List<EmailPart>
                            {
                                new HtmlEmailPart(HtmlOne),
                                new VariableEmailPart(VariableType.InputText, Value),
                                new HtmlEmailPart(HtmlTwo)
                            };

            var emailHtmlBuilder = new EmailHtmlBuilder();
            _result = emailHtmlBuilder.BuildHtmlEmail(parts);
        }