code: def test_generate_random_rotation_matrix(self):
      # very basic test, we check if rotations actually work in test_rotate_molecules
      for _ in range(100):
          m = generate_random_rotation_matrix()
          self.assertEqual(m.shape, (3, 3))
  
file_path: deepchem/deepchem/utils/test/test_geometry_utils.py
imports: import unittest
  import numpy
  from deepchem.utils import geometry_utils
  from deepchem.utils.geometry_utils import unit_vector
  from deepchem.utils.geometry_utils import angle_between
  from deepchem.utils.geometry_utils import compute_pairwise_distances
  from deepchem.utils.geometry_utils import generate_random_unit_vector
  from deepchem.utils.geometry_utils import generate_random_rotation_matrix
  from deepchem.utils.geometry_utils import is_angle_within_cutoff
label_desc: Use image node_id 2 for calling the TestGeometryUtils obj's underlying member method code with example usage: obj.test_generate_random_rotation_matrix() without return types