Incompatibility between pytest 6.x and pytest-cpp==2.1.2

[greschd]

The newest release pytest-cpp==2.1.2 seems to be incompatible with the pytest 6.x releases:

Steps to reproduce:

• Create and activate a new virtualenv
• pip install 'pytest<7' pytest-cpp==2.1.2
• In an empty directory, run pytest

Expected behavior:

Pytest runs, without executing any tests.

Observed behavior:

The following exception is raised:

Traceback (most recent call last):
  File "/home/dgresch/venv/bin/pytest", line 8, in <module>
    sys.exit(console_main())
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 185, in console_main
    code = main()
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 143, in main
    config = _prepareconfig(args, plugins)
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 318, in _prepareconfig
    config = pluginmanager.hook.pytest_cmdline_parse(
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_callers.py", line 55, in _multicall
    gen.send(outcome)
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/helpconfig.py", line 100, in pytest_cmdline_parse
    config: Config = outcome.get_result()
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_result.py", line 60, in get_result
    raise ex[1].with_traceback(ex[2])
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 1003, in pytest_cmdline_parse
    self.parse(args)
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 1283, in parse
    self._preparse(args, addopts=addopts)
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 1172, in _preparse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_manager.py", line 288, in load_setuptools_entrypoints
    self.register(plugin, name=ep.name)
  File "/home/dgresch/venv/lib/python3.8/site-packages/_pytest/config/__init__.py", line 436, in register
    ret: Optional[str] = super().register(plugin, name)
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_manager.py", line 114, in register
    self._verify_hook(hook, hookimpl)
  File "/home/dgresch/venv/lib/python3.8/site-packages/pluggy/_manager.py", line 232, in _verify_hook
    raise PluginValidationError(
pluggy._manager.PluginValidationError: Plugin 'cpp' for hook 'pytest_collect_file'
hookimpl definition: pytest_collect_file(parent, file_path)
Argument(s) {'file_path'} are declared in the hookimpl but can not be found in the hookspec

Additional observations:

The exception can be avoided by either downgrading pytest-cpp to 2.1.1, or upgrading pytest to 7.x.

[nicoddemus]

Hi @greschd thanks for writing up!

[greschd]

Thanks for the quick fix!