public void DisplayName_Precedence()
{
var ma = new MailAddress("Hola <[email protected]>");
Assert.Equal(ma.DisplayName, "Hola");
ma = new MailAddress("Hola <[email protected]>", "Adios");
Assert.Equal(ma.DisplayName, "Adios");
ma = new MailAddress("Hola <[email protected]>", "");
Assert.Equal(ma.DisplayName, "Hola");
ma = new MailAddress("<[email protected]>", "");
Assert.Equal(ma.DisplayName, "");
}