def METHOD_NAME(def_config, temp_db_conn, sql_preprocessor,
                temp_db_with_extensions, tmp_path):
    def_config.lib_dir.sql = tmp_path / 'sql'
    def_config.lib_dir.sql.mkdir()
    (def_config.lib_dir.sql / 'tiger_import_start.sql').write_text(
        """CREATE OR REPLACE FUNCTION tiger_line_import(linegeo GEOMETRY, start INTEGER,
                                                        stop INTEGER, interpol TEXT,
                                                        token_info JSONB, postcode TEXT)
           RETURNS INTEGER AS $$
            INSERT INTO tiger VALUES(linegeo, start, stop, interpol, token_info, postcode)
            RETURNING 1
           $$ LANGUAGE SQL;""")
    (def_config.lib_dir.sql / 'tiger_import_finish.sql').write_text(
        """DROP FUNCTION tiger_line_import (linegeo GEOMETRY, in_startnumber INTEGER,
                                 in_endnumber INTEGER, interpolationtype TEXT,
                                 token_info JSONB, in_postcode TEXT);""")
    return MockTigerTable(temp_db_conn)