class_docstr: Tests for CoulombMatrix.
class_docstr_tok: ["Tests","for","CoulombMatrix","."]
docstr: Test no hydrogen removal.
docstr_tok: ["Test","no","hydrogen","removal","."]
code: def test_coulomb_matrix_hydrogens(self):
      """
      Test no hydrogen removal.
      """
      f = CoulombMatrix(
          max_atoms=self.num_atoms,
          remove_hydrogens=False,
          upper_tri=True,
      )
      size = np.triu_indices(self.num_atoms)[0].size
      rval = f([self.mol_with_no_conf])
      assert rval.shape == (1, size)
      rval = f([self.mol_with_one_conf])
      assert rval.shape == (1, size)
      rval = f([self.mol_with_multi_conf])
      assert rval.shape == (1, self.num_confs, size)
  
file_path: deepchem/deepchem/feat/tests/test_coulomb_matrices.py
imports: import numpy
  import unittest
  from deepchem.feat import CoulombMatrix, CoulombMatrixEig
  from deepchem.utils import conformers
label_desc: Use image node_id 7 for calling the TestCoulombMatrix obj's underlying member method code with example usage: obj.test_coulomb_matrix_hydrogens() without return types