PluginValidationError: unknown hook 'pytest_fixture_plus'

[adnanmuttaleb]

I have installed pytest_cases, but when using it in conftest.py:

import pytest
from pytest_cases import pytest_fixture_plus, pytest_parametrize_plus

@pytest_fixture_plus(scope='module')
@pytest.mark.parametrize('name,description', [('cs', 'computer science')])
def domain(test_client, user, name, description):
  pass

I get the following error:

INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/_pytest/main.py", line 196, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/_pytest/main.py", line 245, in _main
INTERNALERROR>     config.hook.pytest_collection(session=session)
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/hooks.py", line 286, in __call__
INTERNALERROR>     return self._hookexec(self, self.get_hookimpls(), kwargs)
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/manager.py", line 93, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/manager.py", line 87, in <lambda>
INTERNALERROR>     firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/callers.py", line 208, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/callers.py", line 80, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/callers.py", line 187, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/_pytest/main.py", line 255, in pytest_collection
INTERNALERROR>     return session.perform_collect()
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/_pytest/main.py", line 455, in perform_collect
INTERNALERROR>     self.config.pluginmanager.check_pending()
INTERNALERROR>   File "/var/www/dictionary/venv/lib/python3.6/site-packages/pluggy/manager.py", line 277, in check_pending
INTERNALERROR>     % (name, hookimpl.plugin),
INTERNALERROR> pluggy.manager.PluginValidationError: unknown hook 'pytest_fixture_plus' in plugin <module 'mo3jam
.tests.conftest' from '/var/www/.../tests/conftest.py'>

I tried to upgrade pluggy, but this did not work.

[smarie]

Thanks ! I was able to reproduce this. You can even reproduce the same bug by having a single line in conftest.py:

from pytest_cases import pytest_fixture_plus

pytest thinks that pytest_fixture_plus is a plugin because it starts with pytest_ :)

[smarie]

A quick workaround is to rename the symbol:

import pytest
from pytest_cases import pytest_fixture_plus as fixture_plus

@fixture_plus(scope='module')
@pytest.mark.parametrize('name,description', [('cs', 'computer science')])
def domain(test_client, user, name, description):
  pass

[smarie]

Fixed in 1.12.1 - sorry for the deployment delay, I actually forgot to tag :)