public void Test_EnablingFooter_text_html()
{
var mail = BasicMailBuilder
.EnableFooter(text: "text", html: "html")
.Build();
var message = new SendGridMessage();
message.EnableFooter(text: "text", html: "html");
Assert.IsFalse(string.IsNullOrEmpty(message.Header.JsonString()));
Assert.AreEqual(message.Header.JsonString(), mail.Header.JsonString());
}
