Method _test_attribute

test/orm/test_relationships.py:6112–6124

(self, obj, attrname, newvalue)

    run_deletes = None

    def _test_attribute(self, obj, attrname, newvalue):
        sess = fixture_session()
        sess.add(obj)
        oldvalue = getattr(obj, attrname)
        sess.commit()

        # expired
        assert attrname not in obj.__dict__

        setattr(obj, attrname, newvalue)
        eq_(
            attributes.get_history(obj, attrname), ([newvalue], (), [oldvalue])
        )

    def test_column_property_flag(self):
        User, users = self.classes.User, self.tables.users