Tests fail with 1.11.2

[chbndrhnns]

After upgrading to 1.11.2, my tests using pytest-mock start failing with the message below. It turns out this change fixes it but it still needs to be released.

I am using pytest 5.2.4

self = <pytest_mock.plugin.MockFixture._Patcher object at 0x104e8c590>
stack = [FrameInfo(frame=<frame at 0x104cfc5c0, file '/Users/powerjo/.local/share/virtualenvs/backend-qQJPOvQO/lib/python3.7/s...92, function='_hookexec', code_context=['        return self._inner_hookexec(hook, methods, kwargs)\n'], index=0), ...]

    def _enforce_no_with_context(self, stack):
        """raises a ValueError if mocker is used in a with context"""
        caller = stack[1]
        frame = caller[0]
        info = inspect.getframeinfo(frame)
>       code_context = " ".join(info.code_context).strip()
E       TypeError: can only join an iterable

../../../../.local/share/virtualenvs/backend-qQJPOvQO/lib/python3.7/site-packages/pytest_mock/plugin.py:167: TypeError

[nicoddemus]

Hi @chbndrhnns, thanks for the nudge! 1.12 released. 👍

[richin13]

Hi @nicoddemus: I'm currently receiving this error as well. Here's the relevant part of my poetry show command

pytest                  5.2.4   pytest: simple powerful testing with Python
pytest-clarity          0.2.0a1 A plugin providing an alternative, colourful diff output for failing assertions.
pytest-cov              2.8.1   Pytest plugin for measuring coverage.
pytest-flask-sqlalchemy 1.0.2   A pytest plugin for preserving test isolation in Flask-SQlAlchemy using database transactions.
pytest-mock             1.12.0  Thin-wrapper around the mock package for easier use with py.test

Any ideas? 😢

[nicoddemus]

Hi @richin13,

Sorry to hear!

I think info.code_context might be None:

>>> " ".join(None)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: can only join an iterable

Hmmm any chance you don't have the source code of the place where the code is used?

If I compile some code to a .pyc file, remove the original source, then execute the .pyc, I get code_context also equal to None:

λ py -3 foo.cpython-38.pyc
Traceback(filename='foo.py', lineno=15, function='main', code_context=None, index=None)

[richin13]

Thank you so much @nicoddemus: turns out I forgot to clean my __pycache__ and related files. Removing them fixed the issue. Thanks again

[nicoddemus]

@richin13 thanks for confirming it. I just released 1.12.1 with a fix for this problem. 👍