code: def test_add_short_and_long_option_names(optmanager):
      """Verify the behaviour of using both short and long option names."""
      assert optmanager.options == []
      assert optmanager.config_options_dict == {}
  
      optmanager.add_option("-b", "--both", help="Test both opts")
      assert optmanager.options[0].short_option_name == "-b"
      assert optmanager.options[0].long_option_name == "--both"
  
imports: from __future__ import annotations
  import argparse
  import os
  import pytest
  from flake8.main.options import JobsArgument
  from flake8.options import manager
label_desc: Use image node_id 8 for calling a global function with example usage: test_add_short_and_long_option_names(optmanager) without return types