selectLocalizedValue

string locale = "ru_RU.UTF-8@jargon";
assert(selectLocalizedValue(string.init, "ru_RU", "Программист", "ru@jargon", "Кодер") == tuple(string.init, string.init));
assert(selectLocalizedValue(locale, "fr_FR", "Programmeur", string.init, "Programmer") == tuple(string.init, "Programmer"));
assert(selectLocalizedValue(locale, string.init, "Programmer", "de_DE", "Programmierer") == tuple(string.init, "Programmer"));
assert(selectLocalizedValue(locale, "fr_FR", "Programmeur", "de_DE", "Programmierer") == tuple(string.init, string.init));

assert(selectLocalizedValue(string.init, string.init, "Value", string.init, string.init) == tuple(string.init, "Value"));
assert(selectLocalizedValue(locale, string.init, "Value", string.init, string.init) == tuple(string.init, "Value"));
assert(selectLocalizedValue(locale, string.init, string.init, string.init, "Value") == tuple(string.init, "Value"));

assert(selectLocalizedValue(locale, "ru_RU", "Программист", "ru@jargon", "Кодер") == tuple("ru_RU", "Программист"));
assert(selectLocalizedValue(locale, "ru_RU", "Программист", "ru_RU@jargon", "Кодер") == tuple("ru_RU@jargon", "Кодер"));

assert(selectLocalizedValue(locale, "ru", "Разработчик", "ru_RU", "Программист") == tuple("ru_RU", "Программист"));