code: def test_plugin_off_by_default(tmp_path, capsys):
      cfg_s = f"""\
  [flake8:local-plugins]
  extension =
      ABC = {AlwaysErrorsDisabled.__module__}:{AlwaysErrorsDisabled.__name__}
  """
      cfg = tmp_path.joinpath("tox.ini")
      cfg.write_text(cfg_s)
  
      t_py = tmp_path.joinpath("t.py")
      t_py.touch()
  
      cmd = (str(t_py), "--config", str(cfg))
  
      assert main(cmd) == 0
      out, err = capsys.readouterr()
      assert out == err == ""
  
      assert main((*cmd, "--enable-extension=ABC")) == 1
      out, err = capsys.readouterr()
      assert out == f"{t_py}:1:1: ABC123 error\n"
      assert err == ""
  
imports: from __future__ import annotations
  import pytest
  from flake8.main.cli import main
  from flake8.main.options import register_default_options
  from flake8.main.options import stage1_arg_parser
  from flake8.options import aggregator
  from flake8.options import config
  from flake8.options.manager import OptionManager
  from flake8.plugins import finder
label_desc: Use image node_id 5 for calling a global function with example usage: test_plugin_off_by_default(tmp_path, capsys) without return types