code: def test_dtw_subseq_pass():
      # Construct a cost matrix where partial alignment is possible
      C = np.zeros((4, 4), dtype=float)
      C[-1, 2:] = np.inf
      librosa.sequence.dtw(C=C, subseq=True)
  
imports: import librosa
  import numpy
  from scipy.spatial.distance import cdist
  import pytest
  from test_core import srand
label_desc: Use image node_id 22 for calling a global function with example usage: test_dtw_subseq_pass() without return types