Running unit tests with Pytest is pulling in functional test requirements

[dralley]

Describe the bug

I should be able to exclusively run the unit tests without issues. However, it seems we're getting caught up on a pytest plugin that gets loaded, which then pulls in the functional test code, making the separation between unit tests and functional tests moot.

root@5531d25eaa6e pulp_rpm]# pytest -v -r sx --color=yes pulp_rpm/tests/unit/
Traceback (most recent call last):
  File "/usr/local/bin/pytest", line 8, in <module>
    sys.exit(console_main())
  File "/usr/local/lib/python3.8/site-packages/_pytest/config/__init__.py", line 192, in console_main
    code = main()
  File "/usr/local/lib/python3.8/site-packages/_pytest/config/__init__.py", line 150, in main
    config = _prepareconfig(args, plugins)
  File "/usr/local/lib/python3.8/site-packages/_pytest/config/__init__.py", line 331, in _prepareconfig
    config = pluginmanager.hook.pytest_cmdline_parse(
  File "/usr/local/lib/python3.8/site-packages/pluggy/_hooks.py", line 493, in __call__
    return self._hookexec(self.name, self._hookimpls, kwargs, firstresult)
  File "/usr/local/lib/python3.8/site-packages/pluggy/_manager.py", line 115, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.8/site-packages/pluggy/_callers.py", line 130, in _multicall
    teardown[0].send(outcome)
  File "/usr/local/lib/python3.8/site-packages/_pytest/helpconfig.py", line 104, in pytest_cmdline_parse
    config: Config = outcome.get_result()
  File "/usr/local/lib/python3.8/site-packages/pluggy/_result.py", line 114, in get_result
    raise exc.with_traceback(exc.__traceback__)
  File "/usr/local/lib/python3.8/site-packages/pluggy/_callers.py", line 77, in _multicall
    res = hook_impl.function(*args)
  File "/usr/local/lib/python3.8/site-packages/_pytest/config/__init__.py", line 1075, in pytest_cmdline_parse
    self.parse(args)
  File "/usr/local/lib/python3.8/site-packages/_pytest/config/__init__.py", line 1425, in parse
    self._preparse(args, addopts=addopts)
  File "/usr/local/lib/python3.8/site-packages/_pytest/config/__init__.py", line 1305, in _preparse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
  File "/usr/local/lib/python3.8/site-packages/pluggy/_manager.py", line 398, in load_setuptools_entrypoints
    plugin = ep.load()
  File "/usr/lib64/python3.8/importlib/metadata.py", line 77, in load
    module = import_module(match.group('module'))
  File "/usr/lib64/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 843, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/src/pulpcore/pulp_file/pytest_plugin.py", line 21, in <module>
    from pulpcore.tests.functional.utils import generate_iso, generate_manifest
  File "/src/pulpcore/pulpcore/tests/functional/__init__.py", line 25, in <module>
    from pulpcore.tests.functional.utils import (
  File "/src/pulpcore/pulpcore/tests/functional/utils.py", line 22, in <module>
    from pulp_smash.pulp3.bindings import PulpTaskError, PulpTaskGroupError
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "/usr/local/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 186, in exec_module
    exec(co, module.__dict__)
  File "/usr/local/lib/python3.8/site-packages/pulp_smash/pulp3/bindings.py", line 15, in <module>
    cfg = get_config()
  File "/usr/local/lib/python3.8/site-packages/pulp_smash/config.py", line 242, in get_config
    _CONFIG = PulpSmashConfig.load()
  File "/usr/local/lib/python3.8/site-packages/pulp_smash/config.py", line 553, in load
    path = cls.get_load_path(xdg_subdir, config_file)
  File "/usr/local/lib/python3.8/site-packages/pulp_smash/config.py", line 616, in get_load_path
    raise exceptions.ConfigFileNotFoundError(
pulp_smash.exceptions.ConfigFileNotFoundError: /opt/settings/pulp_smash/settings.jsonPulp Smash is unable to find a configuration file. The following (XDG compliant) paths have been searched: , /etc/xdg/pulp_smash/settings.json

I think this pins it down a bit

  File "/src/pulpcore/pulp_file/pytest_plugin.py", line 21, in <module>
    from pulpcore.tests.functional.utils import generate_iso, generate_manifest
  File "/src/pulpcore/pulpcore/tests/functional/__init__.py", line 25, in <module>
    from pulpcore.tests.functional.utils import (
  File "/src/pulpcore/pulpcore/tests/functional/utils.py", line 22, in <module>
    from pulp_smash.pulp3.bindings import PulpTaskError, PulpTaskGroupError

To Reproduce

Run pytest -v -r sx --color=yes {project}/tests/unit/

Additional context
Add any other context about the problem here. Please provide links to any previous discussions via Discourse or Bugzilla.