def test_unregister(self):
class GoodHook(HookBase):
""""""
hook = Hook()
hook.register(GoodHook)
self.assertListEqual(hook._registry, [GoodHook, ])
hook.unregister(GoodHook)
self.assertListEqual(hook._registry, [])
# calling unregister again should do nothing
hook.unregister(GoodHook)
self.assertListEqual(hook._registry, [])
