Pytest: conftest.py identified in the host and guest when running Docker

[Caipers]

I am trying to use Docker to run our test cases.
I am sharing the git repo volume between host and guest.
I am also using pytest inside of tox.

When running pytext (from tox) in the Docker guest (ubuntu):

ImportError while loading conftest '/folder/python/tests/testcatalog/conftest.py'.
EINVAL: [Invalid argument]: samefile('/folder/python/tests/testcatalog/conftest.py', '/folder/python/tests/C:\\repos\\sdk\\python\\tests\\testcatalog\\conftest.py')

It seems the conftest.py is identifying both host and guest conftest.py files. In my opinion, it should only search for the guest.

Workaround:
If I copy the git folder into a new location in the Docker guest, it works fine.

The dependency list for tox:

deps =
    pytest
    pytest-html
    pytest-timeout
    future

Docker:
Windows host --> Ubuntu guest

[Caipers]

I also run outside tox, the issue remains.

pytest --version This is pytest version 4.6.2, imported from /usr/local/lib/python2.7/site-packages/pytest.pyc setuptools registered plugins: pytest-html-1.20.0 at /usr/local/lib/python2.7/site-packages/pytest_html/plugin.py pytest-metadata-1.8.0 at /usr/local/lib/python2.7/site-packages/pytest_metadata/plugin.py pytest-timeout-1.3.3 at /usr/local/lib/python2.7/site-packages/pytest_timeout.py pytest-calvin-0.1.0 at /usr/local/lib/python2.7/site-packages/pytest_calvin-0.1.0-py2.7.egg/pytest_calvin/plugin.pyc pytest-mock-1.10.4 at /usr/local/lib/python2.7/site-packages/pytest_mock-1.10.4-py2.7.egg/pytest_mock.py

pip list

• atomicwrites 1.3.0
• attrs 19.1.0
• configparser 3.7.4
• contextlib2 0.5.5
• filelock 3.0.12
• funcsigs 1.0.2
• future 0.17.1
• importlib-metadata 0.17
• intel.tracecli 1.19232.0
• mock 3.0.5
• more-itertools 5.0.0
• packaging 19.0
• pathlib2 2.3.3
• pip 19.1.1
• pluggy 0.12.0
• ply 3.11
• psutil 5.6.2
• py 1.8.0
• pyasn1 0.4.5
• pycryptodomex 3.8.2
• pyparsing 2.4.0
• pyserial 3.4
• pysmi 0.3.4
• pysnmp 4.4.9
• pytest 4.6.2
• pytest-calvin 0.1.0
• pytest-html 1.20.0
• pytest-metadata 1.8.0
• pytest-mock 1.10.4
• pytest-timeout 1.3.3
• PyYAML 5.1
• scandir 1.10.0
• setuptools 39.0.1
• six 1.12.0
• toml 0.10.0
• tox 3.12.1
• virtualenv 16.6.0
• wcwidth 0.1.7
• wheel 0.33.4
• zipp 0.5.1`

[asottile]

when running pytest mounted across filesystems you'll need to clear .pyc files upon switching

[Caipers]

Thanks guys that was my issue!