import pytest @pytest.fixture( params=[ lambda spec: spec, lambda spec: spec() ], ids=[ "spec-is-class", "spec-is-instance" ], ) def he_pm(request, pm): from pluggy import HookspecMarker hookspec = HookspecMarker("example") class Hooks(object): @hookspec def he_method1(self, arg): return arg + 1 pm.add_hookspecs(request.param(Hooks)) return pm @pytest.fixture def pm(): from pluggy import PluginManager return PluginManager("example")