pytest fails with oslo.config

[Vikash082]

I am trying to run pytest on my project. My project uses oslo_config for config management. pytest fails running the case when I pass my test directory, which in this case is tests as argument.

 pytest tests/            
================================================================ test session starts =================================================================
platform linux -- Python 3.6.7, pytest-4.6.3, py-1.8.0, pluggy-0.12.0
rootdir: /home/vikash/pyprojects/acc-pyutils
collected 0 items / 3 errors                                                                                                                         

===================ERROR======================
_______ ERROR collecting tests/test_client.py____________
tests/test_client.py:1: in <module>
    from acc_pyutils.api import KubeAPI
acc_pyutils/__init__.py:3: in <module>
    acc_pyutils.conf.configure()
acc_pyutils/conf/__init__.py:21: in configure
    CONF(project='acc_pyutils'
../../.virtualenvs/acc-pyutils/lib/python3.6/site-packages/oslo_config/cfg.py:2467: in __call__
    else sys.argv[1:])
../../.virtualenvs/acc-pyutils/lib/python3.6/site-packages/oslo_config/cfg.py:3131: in _parse_cli_opts
    return self._parse_config_files()
../../.virtualenvs/acc-pyutils/lib/python3.6/site-packages/oslo_config/cfg.py:3167: in _parse_config_files
    self._oparser.parse_args(self._args, namespace)
../../.virtualenvs/acc-pyutils/lib/python3.6/site-packages/oslo_config/cfg.py:2295: in parse_args
    return super(_CachedArgumentParser, self).parse_args(args, namespace)
/usr/lib/python3.6/argparse.py:1746: in parse_args
    self.error(msg % ' '.join(argv))
/usr/lib/python3.6/argparse.py:2402: in error
    self.exit(2, _('%(prog)s: error: %(message)s\n') % args)
/usr/lib/python3.6/argparse.py:2389: in exit
    _sys.exit(status)
E   SystemExit: 2
------------------------------------------------------------------ Captured stderr -------------------------------------------------------------------
usage: pytest [-h] [--config-dir DIR] [--config-file PATH]
pytest: error: unrecognized arguments: tests/
_______________________________________________________ ERROR collecting tests/test_kubectl.py _______________________________________________________
tests/test_kubectl.py:1: in <module>
    from acc_pyutils.api import KubeAPI
acc_pyutils/__init__.py:3: in <module>
    acc_pyutils.conf.configure()

However, if I just run pytest, It runs fine.
But the issue is, I cannot run individual file with this.

$ pip list
Package            Version 
------------------ --------
atomicwrites       1.3.0   
attrs              19.1.0  
Babel              2.7.0   
cachetools         3.1.0   
certifi            2019.3.9
chardet            3.0.4   
debtcollector      1.21.0  
google-auth        1.6.3   
idna               2.8     
importlib-metadata 0.18    
kubernetes         9.0.0   
linecache2         1.0.0   
more-itertools     7.0.0   
netaddr            0.7.19  
oauthlib           3.0.1   
oslo.config        5.0.0   
oslo.i18n          3.23.1  
packaging          19.0    
pbr                5.2.1   
pip                19.1.1  
pluggy             0.12.0  
py                 1.8.0   
pyasn1             0.4.5   
pyasn1-modules     0.2.5   
pyparsing          2.4.0   
pytest             4.6.3   
python-dateutil    2.8.0   
pytz               2019.1  
PyYAML             5.1     
requests           2.21.0  
requests-oauthlib  1.2.0   
rfc3986            1.3.2   
rsa                4.0     
setuptools         41.0.1  
six                1.12.0  
stevedore          1.30.1  
traceback2         1.4.0   
unittest2          1.1.0   
urllib3            1.24.3  
wcwidth            0.1.7   
websocket-client   0.56.0  
wheel              0.33.1  
wrapt              1.11.1  
zipp               0.5.1   

[RonnyPfannschmidt]

thats a design error in oslo.config bubbling trough to pytest, nothing pytest can do here

[Vikash082]

@RonnyPfannschmidt Can you please elaborate here ?

[RonnyPfannschmidt]

oslo.config assumes that it owns sys.argv, that is entirely false when being run under pytest

[Vikash082]

Thanks

[Machoney]

Has this issue been somehow resolved?

[RonnyPfannschmidt]

Ask the Oslo project? Again nothing pytest can do here

[Machoney]

I have figure it out, by running pytest from file, not from cmd