code: def test__vq_invalid_type(self):
      a = np.array([1, 2], dtype=int)
      assert_raises(TypeError, _vq.vq, a, a)
  
imports: import warnings
  import sys
  import numpy
  from numpy.testing import assert_array_equal, assert_array_almost_equal, assert_allclose, assert_equal, assert_, 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 5 for calling the TestVq obj's underlying member method code with example usage: obj.test__vq_invalid_type() without return types