def test_track_number(self): song = Song(self.mp3_file_path) self.assertEqual(8, song.get_track_number()) song = Song(self.flac_file_path) self.assertEqual(3, song.get_track_number()) song = Song(self.m4a_file_path) self.assertEqual(1, song.get_track_number()) song = Song(self.no_meta_file) self.assertEqual(4, song.get_track_number()) song = Song(self.no_meta_file) self.assertEqual(99, song.get_track_number(99))