code: def test_vq(self):
      initc = np.concatenate(([[X[0]], [X[1]], [X[2]]]))
      for tp in np.array, matrix:
          label1, dist = _vq.vq(tp(X), tp(initc))
          assert_array_equal(label1, LABEL1)
          tlabel1, tdist = vq(tp(X), tp(initc))
  
imports: from __future__ import division, print_function, absolute_import
  import warnings
  import sys
  import numpy
  from numpy.testing import assert_array_equal, assert_array_almost_equal, assert_allclose, assert_equal, assert_
  from scipy._lib._numpy_compat import suppress_warnings
  import pytest
  from pytest import raises
  from scipy.cluster.vq import kmeans, kmeans2, py_vq, vq, whiten, ClusterError, _krandinit
  from scipy.cluster import _vq
  from scipy.sparse.sputils import matrix
label_desc: Use image node_id 2 for calling the TestVq obj's underlying member method code with example usage: obj.test_vq() without return types