text: """
  Test Autodock Vina Utility Functions.
  """
  import os
  import numpy as np
  import unittest
  from deepchem.utils import vina_utils
  from deepchem.utils import rdkit_utils
  
  
  class TestVinaUtils(unittest.TestCase):
  
    def setUp(self):
      # TODO test more formats for ligand
      current_dir = os.path.dirname(os.path.realpath(__file__))
      self.docked_ligands = os.path.join(current_dir, 'data',
                                         '1jld_ligand_docked.pdbqt')
  
    def test_load_docked_ligand(self):
      docked_ligands, scores = vina_utils.load_docked_ligands(self.docked_ligands)
      assert len(docked_ligands) == 9
      assert len(scores) == 9
  
      for ligand, score in zip(docked_ligands, scores):
        xyz = rdkit_utils.get_xyz_from_mol(ligand)
        assert score < 0  # This is a binding free energy
        assert np.count_nonzero(xyz) > 0
  