Tests fail with "import file mismatch"

[lfam]

While working on a distro package for GNU Guix I found that Autobahn's tests fail to run.

For example:

______ ERROR collecting build/lib/autobahn/nvx/test/test_utf8validator.py ______
import file mismatch:
imported module 'test_utf8validator' has this __file__ attribute:
  /tmp/guix-build-python-autobahn-19.2.1.drv-0/autobahn-19.2.1/autobahn/nvx/test/test_utf8validator.py
which is not the same as the test file we want to collect:
  /tmp/guix-build-python-autobahn-19.2.1.drv-0/autobahn-19.2.1/build/lib/autobahn/nvx/test/test_utf8validator.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules

This is with Python 3.7.0, mock 2.0.0, and pytest 3.8.0.

As a reminder, your setup.py specifies an older pytest in order to keep support for Python 3.3, but I "relaxed" that version requirement since we don't aim to support that older Python.

So, my apologies if that is the cause of these test failures...

The packaging discussion is here: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34515#95

[oberstet]

I found that Autobahn's tests fail to run.

our tests run fine: https://travis-ci.org/crossbario/autobahn-python/builds/493230514

yeah, getting pytest to cooperate across all the different flavors/combinations of python version/run-time is tricky .. and yeah, there are version pins and hacks. if you can come up with a PR that makes building work for debian and runs green on our CI, cool!

[PureTryOut]

The tests fail for me too with the same problems, this is on Alpine Linux with pytest 6.1.2 and Python 3.8.6.

Did you have any luck with this @lfam?

[lfam]

Hi @PureTryOut ,

No, we didn't ever resolve the problem, so the Guix package still skips the test suite. In the Guix bug report (linked above), we suspected it was related to this issue in pytest itself:

pytest-dev/pytest#529

[travankor]

Also running into this issue.

[PureTryOut]

Just a reminder that this is still broken with Python 3.10 and pytest 7.1.3.