def METHOD_NAME(self):
    tts = CS_API()
    self.assertGreater(len(tts.list_voices()), 1)
    self.assertGreater(len(tts.list_speakers()), 1)
    self.assertGreater(len(tts.list_all_speakers()), 1)
    self.assertGreater(len(tts.list_speakers_as_tts_models()), 1)