Lots of test failures with PyPy3.10 7.3.12

[mgorny]

Describe the bug
When running the test suite with PyPy3.10 7.3.12, I get loads of test failures. The following bit seems to repeat a lot:

Traceback (most recent call last):
  File "/tmp/pyfakefs/pyfakefs/tests/fake_filesystem_test.py", line 1433, in test_alt_sep
    fake_os_module = fake_os.FakeOsModule(self.filesystem)
  File "/tmp/pyfakefs/pyfakefs/fake_os.py", line 1356, in wrapped
    return f(*args, **kwargs)
TypeError: object.__new__() takes exactly one argument (the type to instantiate)

Full log (1M): pypy310.txt

How To Reproduce

tox -e pypy310

Your environment
Please run the following in the environment where the problem happened and
paste the output.

$ python -c "import platform; print(platform.platform())"
Linux-6.3.11-gentoo-dist-x86_64-AMD_Ryzen_5_3600_6-Core_Processor-with-glibc2.37
$ python -c "import sys; print('Python', sys.version)"
Python 3.10.12 (af44d0b8114cb82c40a07bb9ee9c1ca8a1b3688c, Jun 16 2023, 13:56:29)
[PyPy 7.3.12 with GCC 12.2.1 20230428]
$ python -c "from pyfakefs import __version__; print('pyfakefs', __version__)"
pyfakefs 5.3.dev0
$ python -c "import pytest; print('pytest', pytest.__version__)"
pytest 7.4.0

I've originally noticed it on 5.2.2, and tested on 78d173b to confirm.

[mrbean-bremen]

Thank you, I will have a look!

[mrbean-bremen]

@mgorny - shall be fixed in main now, please check!

[mgorny]

Thanks. I can confirm that it passes now, except for some assertion from pandas — but that's not a bug in pyfakefs.

[mrbean-bremen]

Do you need a patch release for packaging, or can this wait?

[mgorny]

I would find a new release very helpful but if that's a lot of trouble, we can try to backport the patches in Gentoo.

[mrbean-bremen]

Sure, a release is no trouble at all. Released as 5.2.3, and closing as fixed.

[mgorny]

Thanks again!