code: def test_pairwise_ring_info(self):
      from rdkit import Chem
  
      mol = Chem.MolFromSmiles("c1ccccc1")
      predict_dict = rdkit_utils.compute_pairwise_ring_info(mol)
      assert all(pair == [(6, True)] for pair in predict_dict.values())
      mol = Chem.MolFromSmiles("c1c2ccccc2ccc1")
      predict_dict = rdkit_utils.compute_pairwise_ring_info(mol)
      assert all(pair == [(6, True)] for pair in predict_dict.values())
      mol = Chem.MolFromSmiles("CN=C=O")
      predict_dict = rdkit_utils.compute_pairwise_ring_info(mol)
      assert not predict_dict
  
imports: import tempfile
  import unittest
  import os
  import numpy
  from deepchem.utils import rdkit_utils
label_desc: Use image node_id 15 for calling the TestRdkitUtil obj's underlying member method code with example usage: obj.test_pairwise_ring_info() without return types