import factory class AudioTrackFactory(factory.DictFactory): type_ = "track" position = "1" title = "Track" duration = "" class IndexTrackFactory(factory.DictFactory): type_ = "index" title = "Index Track" position = "" duration = "" sub_tracks = factory.List([factory.SubFactory(AudioTrackFactory)]) class HeadingTrackFactory(factory.DictFactory): type_ = "heading" title = "Heading Track" position = "" duration = ""