code: def test_hf_calculations(package, tmpdir, tol):
      r"""Test the correctness of the HF calculation"""
      import openfermion
  
      n_atoms = 2
      n_electrons = 2
      n_orbitals = 2
      hf_energy = -1.1173490350703152
      orbital_energies = np.array([-0.59546347, 0.71416528])
  
      one_body_integrals = np.array(
          [
              [-1.27785300e00, 1.11022302e-16],
              [0.00000000e00, -4.48299698e-01],
          ]
      )
  
      two_body_integrals = np.array(
          [
              [
                  [
                      [6.82389533e-01, 0.00000000e00],
                      [6.93889390e-17, 1.79000576e-01],
                  ],
                  [
                      [4.16333634e-17, 1.79000576e-01],
                      [6.70732778e-01, 0.00000000e00],
                  ],
              ],
              [
                  [
                      [5.55111512e-17, 6.70732778e-01],
                      [1.79000576e-01, 1.11022302e-16],
                  ],
                  [
                      [1.79000576e-01, 0.00000000e00],
                      [2.77555756e-17, 7.05105632e-01],
                  ],
              ],
          ]
      )
  
      fullpath = qchem.meanfield(
          symbols,
          coordinates,
          name=name,
          package=package,
          outpath=tmpdir.strpath,
      )
  
      molecule = openfermion.MolecularData(filename=fullpath)
  
      assert molecule.n_atoms == n_atoms
      assert molecule.n_electrons == n_electrons
      assert molecule.n_orbitals == n_orbitals
      assert np.allclose(molecule.hf_energy, hf_energy, **tol)
      assert np.allclose(
          molecule.orbital_energies, orbital_energies, **tol
      )
      assert np.allclose(
          molecule.one_body_integrals, one_body_integrals, **tol
      )
      assert np.allclose(
          molecule.two_body_integrals, two_body_integrals, **tol
      )
  
imports: import os
  import numpy
  import pytest
  from pennylane import qchem
label_desc: Use image node_id 2 for calling a global function with example usage: test_hf_calculations(package, tmpdir, tol) without return types