Type Error using patch decorator for 7.0.0rc1

[rohitsheth]

    @patch("packge.class.method")
    def setup(self, mock_method):

The mentioned method is with decorated @staticmethod

Error

    @wraps(func)
    def patched(*args, **keywargs):
        with self.decoration_helper(patched,
                                    args,
                                    keywargs) as (newargs, newkeywargs):
>           return func(*newargs, **newkeywargs)
E           TypeError: setup() takes 2 positional arguments but 3 were given

.eggs/mock-4.0.3-py3.6.egg/mock/mock.py:1346: TypeError

When I use pytest 6.2.5 I do not see this error. This error happens when using pytest 7.+

Package Version
coverage 5.6b1
pytest 7.0.0rc1
pytest-cov 2.11.1
PyHamcrest 2.0.2
mock 4.0.3
tomli 1.2.3

OS: Linux 14.04.6 LTS, Trusty Tahr
Python: Python 3.6.8

Note: Truncated details due to limitations on what I can share about the code and packages.
I can answer further questions if this information is unsufficient.

Quick check-list while reporting bugs:

• 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

[The-Compiler]

It'd be good to have a minimal, complete reproducer demonstrating the issue - I was able to cook one up though:

issue9414.py:

class Cls:

    @staticmethod
    def meth():
        pass

test_9414.py:

from unittest.mock import patch

class TestNothing:

    @patch("issue9414.Cls.meth")
    def setup(self, mock_method):
        pass

    def test_x(self):
        pass

---

Bisected to 89f0b5b from #9273 ("nose: fix class- and module-level fixture behavior"), cc @bluetech

[bluetech]

@rohitsheth Thanks for testing the rc!

The method name setup has a special meaning in test classes - see https://docs.pytest.org/en/latest/how-to/nose.html. Pytest 7.0 has some fixes in this area which make the patching fail, but technically the conflict also exists in previous versions.

You can fix the problem either by using a different name, or by disabling the nose compatibility by passing -p no:nose to pytest (can also be added to addopts config).

[The-Compiler]

I think that was the intention here though: Having some kind of special setup method which does some patching, no?

[rohitsheth]

Yes, the intention was to have a special setup method.
I do have a workaround by changing the name, thank you for the link.
Additionally, thank you adding complete reproducible code, I couldn't share mine due to work limitations.

[bluetech]

I'm closing for #9391 because it's the same underlying issue.