`pytest-lazy-fixtures` | Litestar | Page 1

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Pytest-lazy-fixtures looks to be abandoned with no updates since 2020. Pytest 8.0 is no longer compatible.

Based on some comments in a Github issue, I've been trying to replace it with this:



@dataclass
class LazyFixture:
    """Lazy fixture dataclass."""

    name: str


def lazy_fixture(name: str) -> LazyFixture:
    """Mark a fixture as lazy."""
    return LazyFixture(name)


def is_lazy_fixture(value: object) -> bool:
    """Check whether a value is a lazy fixture."""
    return isinstance(value, LazyFixture)


def pytest_make_parametrize_id(
    config: pytest.Config,
    val: object,
    argname: str,
) -> str | None:
    """Inject lazy fixture parametrized id.

    Reference:
    - https://bit.ly/48Off6r

    Args:
        config (pytest.Config): pytest configuration.
        value (object): fixture value.
        argname (str): automatic parameter name.

    Returns:
        str: new parameter id.
    """
    if is_lazy_fixture(val):
        return cast(LazyFixture, val).name
    return None


def _resolve_lazy_fixture(__val: object, request: pytest.FixtureRequest) -> object:
    """Lazy fixture resolver.

    Args:
        __val (object): fixture value object.
        request (pytest.FixtureRequest): pytest fixture request object.

    Returns:
        object: resolved fixture value.
    """
    if isinstance(__val, list | tuple):
        return tuple(_resolve_lazy_fixture(v, request) for v in __val)
    if isinstance(__val, Mapping):
        return {k: _resolve_lazy_fixture(v, request) for k, v in __val.items()}
    if not is_lazy_fixture(__val):
        return __val
    lazy_obj = cast(LazyFixture, __val)
    return request.getfixturevalue(lazy_obj.name)

Looks like I'm missing something basic though. Anyone have anhy clever ideas?

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See here for details

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https://github.com/TvoroG/pytest-lazy-fixture/issues/65

#`pytest-lazy-fixtures`