Function tox_add_option

tests/plugin/test_inline.py:20–22

(parser: ToxParser)

        @impl
        def tox_add_option(parser: ToxParser) -> None:
            logging.warning("Add magic")
            parser.add_argument("--magic", action="store_true")

    project = tox_project({"toxfile.py": plugin})
    result = project.run("-h")