Function pytest_configure

src/_pytest/warnings.py:132–152

(config: Config)

def pytest_configure(config: Config) -> None:
    with ExitStack() as stack:
        stack.enter_context(
            catch_warnings_for_item(
                config=config,
                ihook=config.hook,
                when="config",
                item=None,
                # this disables recording because the terminalreporter has
                # finished by the time it comes to reporting logged warnings
                # from the end of config cleanup. So for now, this is only
                # useful for setting a warning filter with an 'error' action.
                record=False,
            )
        )
        config.addinivalue_line(
            "markers",
            "filterwarnings(warning): add a warning filter to the given test. "
            "see https://docs.pytest.org/en/stable/how-to/capture-warnings.html#pytest-mark-filterwarnings ",
        )
        config.add_cleanup(stack.pop_all().close)