code: def test_reduction(name):
      """Test that the elements of the rotation group are correctly
      mapped onto the identity rotation."""
      g = Rotation.create_group(name)
      f = g.reduce(g)
      assert_array_almost_equal(f.magnitude(), np.zeros(len(g)))
  
imports: import pytest
  import numpy
  from numpy.testing import assert_array_almost_equal
  from scipy.spatial.transform import Rotation
  from scipy.optimize import linear_sum_assignment
  from scipy.spatial.distance import cdist
  from scipy.constants import golden
  from scipy.spatial import cKDTree
label_desc: Use image node_id 19 for calling a global function with example usage: test_reduction(name) without return types