public void mkvmergelanguageservice_returns_undetermined_when_language_not_found_test()
{
//given
IJsonSerializationService<ISOLanguageCodeCollection> jsonSerializationService = new JsonSerializationService<ISOLanguageCodeCollection>();
IMKVMergeLanguageService service = new MKVMergeLanguageService(jsonSerializationService);
//when
var language = service.GetLanguageByName("nolanguage");
//then
language.Value.Should().Be("und");
}