def server_db(request, cp_server): """Enable database access for unit test vectors.""" db = database.get_connection(read_only=False, integrity_check=False) cursor = db.cursor() cursor.execute('''BEGIN''') util_test.reset_current_block_index(db) request.addfinalizer(lambda: cursor.execute('''ROLLBACK''')) request.addfinalizer(lambda: util_test.reset_current_block_index(db)) return db