Function drop_all_tables_from_metadata

lib/sqlalchemy/testing/util.py:372–392

(metadata, engine_or_connection)

def drop_all_tables_from_metadata(metadata, engine_or_connection):
    from . import engines

    def go(connection):
        engines.testing_reaper.prepare_for_drop_tables(connection)

        if not connection.dialect.supports_alter:
            from . import assertions

            with assertions.expect_warnings(
                "Can't sort tables", assert_=False
            ):
                metadata.drop_all(connection)
        else:
            metadata.drop_all(connection)

    if not isinstance(engine_or_connection, Connection):
        with engine_or_connection.begin() as connection:
            go(connection)
    else:
        go(engine_or_connection)


def drop_all_tables(