public void DOCTYPE()
        {
            HTMLBuilder builder = new HTMLBuilder();

            builder.DOCTYPE();
            AssertEx.EqualLines("<!DOCTYPE html>", builder);
        }
        public void DoctypeHtmlAndHeadElements()
        {
            HTMLBuilder builder = new HTMLBuilder();

            builder.DOCTYPE();
            builder.Html(html =>
            {
                html.Head();
            });
            AssertEx.EqualLines(new[]
            {
                "<!DOCTYPE html>",
                "<html lang=\"en\">",
                "  <head/>",
                "</html>"
            },
                                builder);
        }