Closed
Description
The following is a minimal reproducer for a real-life application in yt:
# test.py
obj = None
def setup():
global obj
obj = []
def test_foo():
assert len(obj) == 0
This test worked as expected until pytest 8.0.2 but fails with version 8.1.1 as
=========================== test session starts ===========================
platform darwin -- Python 3.12.2, pytest-8.1.1, pluggy-1.4.0
rootdir: /private/tmp
collected 1 item
test.py F [100%]
================================ FAILURES =================================
________________________________ test_foo _________________________________
def test_foo():
> assert len(obj) == 0
E TypeError: object of type 'NoneType' has no len()
test.py:7: TypeError
========================= short test summary info =========================
FAILED test.py::test_foo - TypeError: object of type 'NoneType' has no len()
============================ 1 failed in 0.01s ===========================
which seems to indicate that the setup
function wasn't run ahead of the test.
Possibly related to #12011 or how it was resolved ?
exact env:
Package Version
--------- -------
iniconfig 2.0.0
packaging 24.0
pluggy 1.4.0
pytest 8.1.1
Bug seen on MacOS 14 and ubuntu-latest on GHA
- a detailed description of the bug or problem you are having
- output of
pip list
from the virtual environment you are using - pytest and operating system versions
- minimal example if possible
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