code: def test_load_audio(self):
      config = FreeVCConfig()
      model = FreeVC(config).to(device)
      wav = model.load_audio(WAV_FILE)
      wav2 = model.load_audio(wav)
      assert all(torch.isclose(wav, wav2))
  
imports: import os
  import unittest
  import torch
  from tests import get_tests_input_path
  from TTS.vc.configs.freevc_config import FreeVCConfig
  from TTS.vc.models.freevc import FreeVC
label_desc: Use image node_id 5 for calling the TestFreeVC obj's underlying member method code with example usage: obj.test_load_audio() without return types