class_docstr: Test RdkitGridFeaturizer class defined in rdkit_grid_featurizer module.
code: def test_custom_cutoffs(self):
      custom_cutoffs = {
          "hbond_dist_bins": [(2.0, 3.0), (3.0, 3.5)],
          "hbond_angle_cutoffs": [5, 90],
          "splif_contact_bins": [(0, 3.5), (3.5, 6.0)],
          "ecfp_cutoff": 5.0,
          "sybyl_cutoff": 3.0,
          "salt_bridges_cutoff": 4.0,
          "pi_stack_dist_cutoff": 5.0,
          "pi_stack_angle_cutoff": 15.0,
          "cation_pi_dist_cutoff": 5.5,
          "cation_pi_angle_cutoff": 20.0,
      }
      rgf_featurizer = RdkitGridFeaturizer(**custom_cutoffs)
      self.assertEqual(rgf_featurizer.cutoffs, custom_cutoffs)
  
file_path: deepchem/deepchem/feat/tests/test_rdkit_grid_features.py
imports: import os
  import unittest
  import numpy
  from deepchem.feat import RdkitGridFeaturizer
label_desc: Use image node_id 6 for calling the TestRdkitGridFeaturizer obj's underlying member method code with example usage: obj.test_custom_cutoffs() without return types