'Establish a clean test environment'

def setUp(self):

    super(TestAPIProtectedProps, self).setUp()
    self.mapper = routes.Mapper()
    self.set_property_protections()
    self.api = test_utils.FakeAuthMiddleware(router.API(self.mapper))
    db_api.get_engine()
    db_models.unregister_models(db_api.get_engine())
    db_models.register_models(db_api.get_engine())
