code: def test_ElasticRod():
      A, B = ElasticRod(100)
      compare_solutions(A, B, 20)
  
imports: from __future__ import division, print_function, absolute_import
  import itertools
  import numpy
  from numpy.testing import assert_almost_equal, assert_equal, assert_allclose, assert_array_less
  from scipy import ones, rand, r_, diag, linalg, eye
  from scipy.linalg import eig, eigh, toeplitz
  import scipy.sparse
  from scipy.sparse.linalg.eigen.lobpcg import lobpcg
  from scipy.sparse.linalg import eigs
  from scipy.sparse import spdiags
  import pytest
label_desc: Use image node_id 5 for calling a global function with example usage: test_ElasticRod() without return types