code: def test_interval_frequencies(n_bins, intervals, bins_per_octave):
      freqs = librosa.interval_frequencies(
          n_bins,
          fmin=10,
          intervals=intervals,
          bins_per_octave=bins_per_octave,
      )
  
      assert len(freqs) == n_bins
      assert min(freqs) == 10
  
file_path: librosa/tests/test_intervals.py
imports: import os
  import sys
  import warnings
  import numpy
  import pytest
  import librosa
label_desc: Use image node_id 5 for calling a global function with example usage: test_interval_frequencies(n_bins, intervals, bins_per_octave) without return types