test_listener.py 文件源码

def test__tryConnection_logs_error(self):
        listener = PostgresListenerService()

        exception_type = factory.make_exception_type()
        exception_message = factory.make_name("message")

        startConnection = self.patch(listener, "startConnection")
        startConnection.side_effect = exception_type(exception_message)

        with TwistedLoggerFixture() as logger:
            with ExpectedException(exception_type):
                yield listener.tryConnection()

        self.assertThat(logger.events, HasLength(1))
        self.assertThat(logger.events[0], ContainsDict({
            "log_format": Equals("Unable to connect to database: {error}"),
            "log_level": Equals(LogLevel.error),
            "error": Equals(exception_message),
        }))