public void PrettyPrintLanguage_DoesNotModifyUnknownCodes()
{
var htmlDom = new HtmlDom();
var settingsettings = new CollectionSettings() { Language1Iso639Code = "pdc", Language1Name = "German, Kludged" };
var data = new BookData(htmlDom, settingsettings, null);
Assert.That(data.PrettyPrintLanguage("xyz"), Is.EqualTo("xyz"));
}