code: def test_in_out(self):
      self._create_random_model()
      config = load_config(
          os.path.join(get_tests_input_path(), "server_config.json")
      )
      tts_root_path = get_tests_output_path()
      config["tts_checkpoint"] = os.path.join(
          tts_root_path, config["tts_checkpoint"]
      )
      config["tts_config"] = os.path.join(
          tts_root_path, config["tts_config"]
      )
      synthesizer = Synthesizer(
          config["tts_checkpoint"], config["tts_config"], None, None
      )
      synthesizer.tts("Better this test works!!")
  
file_path: TTS/tests/test_demo_server.py
imports: import os
  import unittest
  from tests import get_tests_input_path, get_tests_output_path
  from TTS.utils.synthesizer import Synthesizer
  from TTS.tts.utils.generic_utils import setup_model
  from TTS.tts.utils.io import save_checkpoint
  from TTS.tts.utils.text.symbols import make_symbols, phonemes, symbols
  from TTS.utils.io import load_config
label_desc: Use image node_id 2 for calling the DemoServerTest obj's underlying member method code with example usage: obj.test_in_out() without return types