theY4Kman
Fails with pytest >= 8.4
This is due to internal changes in pytest introduced in https://github.com/pytest-dev/pytest/pull/12473. The representation of a fixture is changed to a class FixtureFunctionDefinition rather than a simple callable. A check is added in _pytest/fixtures.py (FixtureManager.parsefactories) during fixture registration that ensures a fixture is derived from this type. As this is not the case for fixtures generated by pytest-lambda they fail to be registered.
Tests fail as a result with missing fixture errors.
for name in dir(holderobj):
# The attribute can be an arbitrary descriptor, so the attribute
# access below can raise. safe_getattr() ignores such exceptions.
obj_ub = safe_getattr(holderobj_tp, name, None)
if type(obj_ub) is FixtureFunctionDefinition: # <-- Additional check
marker = obj_ub._fixture_function_marker
if marker.name:
fixture_name = marker.name
else:
fixture_name = name
# OK we know it is a fixture -- now safe to look up on the _instance_.
try:
obj = getattr(holderobj, name)
# if the fixture is named in the decorator we cannot find it in the module
except AttributeError:
obj = obj_ub
func = obj._get_wrapped_function()
self._register_fixture(
name=fixture_name,
nodeid=nodeid,
func=func,
scope=marker.scope,
params=marker.params,
ids=marker.ids,
autouse=marker.autouse,
)
The new type is internal and is not exposed in the pytest namespace.
As part of the change, the internal _PytestWrapper type has been removed too.
I can confirm that. My lambda fixtures stopped working after pytest upgrade to version >=8.4
