AttributeError: 'NotSetType' object has no attribute 'id' when using empty params list

[steadyfirmness]

Steps to Reproduce:

1. Create a pytest fixture with an empty params list and an ids function that references an attribute of the param, e.g.:

@pytest.fixture(params=[], ids=lambda x: x.id)
def empty_param(request):
    return request.param

2.Write a test function that uses this fixture:

def test_empty_param(empty_param):
    pass

3.Run the test using the pytest command:

pytest test_foo.py::test_empty_param

Expected Behavior:

The test should either be skipped or provide a more informative error message indicating that the params list is empty.

Actual Behavior:

The test raises an AttributeError: 'NotSetType' object has no attribute 'id' error.

Error Output

tests/test_foo.py:None (tests/test_foo.py)
test_foo.py:163: in <lambda>
    @pytest.fixture(params=[], ids=lambda x: x.id)
E   AttributeError: 'NotSetType' object has no attribute 'id'

The above exception was the direct cause of the following exception:
../venv/lib/python3.12/site-packages/pluggy/_hooks.py:513: in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
...
E   ValueError: tests/test_foo.py::test_empty_param: error raised while trying to determine id of parameter 'empty_param' at position 0
collected 0 items / 1 error

Environment:

pytest version: 8.3.4
Python version: 3.12
Operating System: macOS

Possible Solution:

Provide a more informative error message or skip the test when the params list is empty. Alternatively, document the expected behavior when using an empty params list with a custom ids function.

[RonnyPfannschmidt]

closing as dupe of #13031
fixed by #13073

backport was after 8.3.4 so a new release is needed