Function idmaker

src/_pytest/python.py:1428–1459

(
    argnames: Iterable[str],
    parametersets: Iterable[ParameterSet],
    idfn: Optional[Callable[[Any], Optional[object]]] = None,
    ids: Optional[List[Union[None, str]]] = None,
    config: Optional[Config] = None,
    nodeid: Optional[str] = None,
)

def idmaker(
    argnames: Iterable[str],
    parametersets: Iterable[ParameterSet],
    idfn: Optional[Callable[[Any], Optional[object]]] = None,
    ids: Optional[List[Union[None, str]]] = None,
    config: Optional[Config] = None,
    nodeid: Optional[str] = None,
) -> List[str]:
    resolved_ids = [
        _idvalset(
            valindex, parameterset, argnames, idfn, ids, config=config, nodeid=nodeid
        )
        for valindex, parameterset in enumerate(parametersets)
    ]

    # All IDs must be unique!
    unique_ids = set(resolved_ids)
    if len(unique_ids) != len(resolved_ids):

        # Record the number of occurrences of each test ID.
        test_id_counts = Counter(resolved_ids)

        # Map the test ID to its next suffix.
        test_id_suffixes: Dict[str, int] = defaultdict(int)

        # Suffix non-unique IDs to make them unique.
        for index, test_id in enumerate(resolved_ids):
            if test_id_counts[test_id] > 1:
                resolved_ids[index] = f"{test_id}{test_id_suffixes[test_id]}"
                test_id_suffixes[test_id] += 1

    return resolved_ids


def _pretty_fixture_path(func) -> str: