code: def test_mapper_two_directed_bonds_btw_two_atoms():
      """
      Test 'CC' in _MapperDMPNN (1 bond present (2 directed))
      """
      mapper = _MapperDMPNN(graphs[1])
      assert (mapper.bond_to_ini_atom == np.asarray([0, 1])).all()
      assert (
          mapper.atom_to_incoming_bonds == np.asarray([[1], [0]])
      ).all()
      assert (mapper.mapping == np.asarray([[-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 3 for calling a global function with example usage: test_mapper_two_directed_bonds_btw_two_atoms() without return types