code: def test_all_shortest_pairs(self):
      from rdkit import Chem
  
      mol = Chem.MolFromSmiles("CN=C=O")
      valid_dict = {
          (0, 1): (0, 1),
          (0, 2): (0, 1, 2),
          (0, 3): (0, 1, 2, 3),
          (1, 2): (1, 2),
          (1, 3): (1, 2, 3),
          (2, 3): (2, 3),
      }
      assert (
          rdkit_utils.compute_all_pairs_shortest_path(mol) == valid_dict
      )
  
imports: import tempfile
  import unittest
  import os
  import numpy
  from deepchem.utils import rdkit_utils
label_desc: Use image node_id 14 for calling the TestRdkitUtil obj's underlying member method code with example usage: obj.test_all_shortest_pairs() without return types