Method _resolve_arg_ids

src/_pytest/python.py:1175–1206

Resolve the actual ids for the given argnames, based on the ``ids`` parameter given to ``parametrize``. :param List[str] argnames: List of argument names passed to ``parametrize()``. :param ids: The ids parameter of the parametrized call (see docs). :param List[Param

(
        self,
        argnames: Sequence[str],
        ids: Optional[
            Union[
                Iterable[Union[None, str, float, int, bool]],
                Callable[[Any], Optional[object]],
            ]
        ],
        parameters: Sequence[ParameterSet],
        nodeid: str,
    )

        self._calls = newcalls

    def _resolve_arg_ids(
        self,
        argnames: Sequence[str],
        ids: Optional[
            Union[
                Iterable[Union[None, str, float, int, bool]],
                Callable[[Any], Optional[object]],
            ]
        ],
        parameters: Sequence[ParameterSet],
        nodeid: str,
    ) -> List[str]:
        """Resolve the actual ids for the given argnames, based on the ``ids`` parameter given
        to ``parametrize``.

        :param List[str] argnames: List of argument names passed to ``parametrize()``.
        :param ids: The ids parameter of the parametrized call (see docs).
        :param List[ParameterSet] parameters: The list of parameter values, same size as ``argnames``.
        :param str str: The nodeid of the item that generated this parametrized call.
        :rtype: List[str]
        :returns: The list of ids for each argname given.
        """
        if ids is None:
            idfn = None
            ids_ = None
        elif callable(ids):
            idfn = ids
            ids_ = None
        else:
            idfn = None
            ids_ = self._validate_ids(ids, parameters, self.function.__name__)
        return idmaker(argnames, parameters, idfn, ids_, self.config, nodeid=nodeid)

    def _validate_ids(
        self,