code: def test_digital_signature(digitally_signed, no_outpdf):
      with pytest.raises(ocrmypdf.exceptions.DigitalSignatureError):
          check_ocrmypdf(digitally_signed, no_outpdf)
  
file_path: OCRmyPDF/tests/test_acroform.py
imports: from __future__ import annotations
  import logging
  import pikepdf
  import pytest
  import ocrmypdf
  from .conftest import check_ocrmypdf
label_desc: Use image node_id 5 for calling a global function with example usage: test_digital_signature(digitally_signed, no_outpdf) without return types