code: def test_integration_mol_file_to_vqe_cost(
      name, core, active, mapping, expected_cost, custom_wires, tol
  ):
      r"""Test if the output of `decompose()` works with `import_operator()`
      to generate `ExpvalCost()`"""
      ref_dir = os.path.join(
          os.path.dirname(os.path.realpath(__file__)), "test_ref_files"
      )
      hf_file = os.path.join(ref_dir, name)
      qubit_hamiltonian = qchem.decompose(
          hf_file,
          mapping=mapping,
          core=core,
          active=active,
      )
  
      vqe_hamiltonian = qml.qchem.convert.import_operator(
          qubit_hamiltonian, wires=custom_wires, format="openfermion"
      )
      assert len(vqe_hamiltonian.ops) > 1  # just to check if this runs
  
      num_qubits = len(vqe_hamiltonian.wires)
      assert num_qubits == 2 * len(active)
  
      if custom_wires is None:
          wires = num_qubits
      elif isinstance(custom_wires, dict):
          wires = qml.qchem.convert._process_wires(custom_wires)
      else:
          wires = custom_wires[:num_qubits]
      dev = qml.device("default.qubit", wires=wires)
  
      # can replace the ansatz with more suitable ones later.
      def dummy_ansatz(phis, wires):
          for phi, w in zip(phis, wires):
              qml.RX(phi, wires=w)
  
      phis = np.load(
          os.path.join(ref_dir, "dummy_ansatz_parameters.npy")
      )
  
      dummy_cost = catch_warn_ExpvalCost(
          dummy_ansatz, vqe_hamiltonian, dev
      )
      res = dummy_cost(phis)
  
      assert np.abs(res - expected_cost) < tol["atol"]
  
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 19 for calling a global function with example usage: test_integration_mol_file_to_vqe_cost(name, core, active, mapping, expected_cost, custom_wires, tol) without return types