code: def test_frame_hop():
      """frame: hop_length=0"""
      y = np.zeros(128)
      librosa.util.frame(y, frame_length=10, hop_length=0)
  
imports: import os
  import numpy
  import librosa
  import pytest
label_desc: Use image node_id 12 for calling a global function with example usage: test_frame_hop() without return types