code: def test_match_vectors_no_rotation():
      x = np.array([[1, 2, 3], [4, 5, 6]])
      y = x.copy()
  
      r, p = Rotation.match_vectors(x, y)
      assert_array_almost_equal(r.as_dcm(), np.eye(3))
  
imports: from __future__ import division, print_function, absolute_import
  import pytest
  import numpy
  from numpy.testing import assert_equal, assert_array_almost_equal
  from numpy.testing import assert_allclose
  from scipy.spatial.transform import Rotation, Slerp
  from scipy.stats import special_ortho_group
  from itertools import permutations
label_desc: Use image node_id 48 for calling a global function with example usage: test_match_vectors_no_rotation() without return types