code: def test_mapper_two_adjacent_bonds():
      """
      Test 'CCC' in _MapperDMPNN (2 adjacent bonds present (4 directed))
      """
      mapper = _MapperDMPNN(graphs[2])
      assert (mapper.bond_to_ini_atom == np.asarray([0, 1, 1, 2])).all()
      print(mapper.atom_to_incoming_bonds)
      assert (
          mapper.atom_to_incoming_bonds
          == np.asarray([[1, -1], [0, 3], [2, -1]])
      ).all()
      assert (
          mapper.mapping
          == np.asarray(
              [[-1, -1], [-1, 3], [0, -1], [-1, -1], [-1, -1]]
          )
      ).all()
  
file_path: deepchem/deepchem/models/tests/test_mapper_dmpnn.py
imports: from deepchem.feat import DMPNNFeaturizer
  import numpy
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: test_mapper_two_adjacent_bonds() without return types