code: def test_audio():
      audio_path = os.path.join(os.path.dirname(__file__), "jfk.flac")
      audio = load_audio(audio_path)
      assert audio.ndim == 1
      assert SAMPLE_RATE * 10 < audio.shape[0] < SAMPLE_RATE * 12
      assert 0 < audio.std() < 1
  
      mel_from_audio = log_mel_spectrogram(audio)
      mel_from_file = log_mel_spectrogram(audio_path)
  
      assert np.allclose(mel_from_audio, mel_from_file)
      assert mel_from_audio.max() - mel_from_audio.min() <= 2.0
  
imports: import os.path
  import numpy
  from whisper.audio import SAMPLE_RATE, load_audio, log_mel_spectrogram
label_desc: Use image node_id 1 for calling a global function with example usage: test_audio() without return types