code: def test_jordan_wigner_for_identity():
      """Test that the jordan_wigner function returns the correct qubit operator for Identity."""
      assert qml.equal(jordan_wigner(FermiWord({})), qml.Identity(0))
  
imports: import pytest
  import pennylane
  from pennylane.ops import SProd, Identity
  from pennylane.pauli.conversion import pauli_sentence
  from pennylane.fermi.conversion import jordan_wigner
  from pennylane.pauli import PauliWord, PauliSentence
  from pennylane.fermi.fermionic import FermiWord, FermiSentence
label_desc: Use image node_id 3 for calling a global function with example usage: test_jordan_wigner_for_identity() without return types