Method test_exceptions_sticky

test/orm/test_mapper.py:296–327

test preservation of mapper compile errors raised during hasattr(), as well as for redundant mapper compile calls. Test that repeated calls don't stack up error messages.

(self)

        eq_(str(User.addresses), "User.addresses")

    def test_exceptions_sticky(self):
        """test preservation of mapper compile errors raised during hasattr(),
        as well as for redundant mapper compile calls.  Test that
        repeated calls don't stack up error messages.

        """

        Address, addresses, User = (
            self.classes.Address,
            self.tables.addresses,
            self.classes.User,
        )

        self.mapper(
            Address, addresses, properties={"user": relationship(User)}
        )

        try:
            hasattr(Address.user, "property")
        except sa.orm.exc.UnmappedClassError:
            assert True

        for i in range(3):
            assert_raises_message(
                sa.exc.InvalidRequestError,
                "One or more mappers failed to initialize - can't "
                "proceed with initialization of other mappers. "
                r"Triggering mapper: 'Mapper\[Address\(addresses\)\]'. "
                "Original exception was: Class 'test.orm._fixtures.User' "
                "is not mapped",
                configure_mappers,
            )

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