code: def test_wfdict_to_statevector(
      wf_dict, n_orbitals, string_ref, coeff_ref
  ):
      r"""Test that _wfdict_to_statevector returns the correct state vector."""
      wf_ref = np.zeros(2 ** (n_orbitals * 2))
      idx_nonzero = [int(s, 2) for s in string_ref]
      wf_ref[idx_nonzero] = coeff_ref
  
      wf_comp = qchem.convert._wfdict_to_statevector(
          wf_dict, n_orbitals
      )
  
      assert np.allclose(wf_comp, wf_ref)
  
imports: import os
  import sys
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane import qchem
  from pennylane.operation import disable_new_opmath, enable_new_opmath
label_desc: Use image node_id 22 for calling a global function with example usage: test_wfdict_to_statevector(wf_dict, n_orbitals, string_ref, coeff_ref) without return types