test_config.py 文件源码

def test_open_and_close(self):
        # ConfigurationDatabase.open() returns a context manager that closes
        # the database on exit.
        config_file = os.path.join(self.make_dir(), "config")
        config = ConfigurationDatabase.open_for_update(config_file)
        self.assertIsInstance(config, contextlib._GeneratorContextManager)
        with config as config:
            self.assertIsInstance(config, ConfigurationDatabase)
            with config.cursor() as cursor:
                self.assertEqual(
                    (1,), cursor.execute("SELECT 1").fetchone())
        self.assertRaises(sqlite3.ProgrammingError, config.cursor)