我正在使用jest和enzyme进行单元测试。下面是我的index.js文件。我需要测试文件的openNotification和uploadErrorNotification函数。但是，只有uploadErrorNotification函数被导出。那么，我如何测试这两个函数呢？
此外，除了jest和enzyme之外，我不想使用任何其他库。

//index.js
import {
      notification
    } from 'antd';

    const openNotification = (message, description, className) => {
      notification.open({
        key: 'upload-template',
        message,
        description,
        placement: "bottomRight",
        duration: null,
      });
    };

    const uploadErrorNotification = (uploadFailedText, errorMsg) => {
      openNotification(uploadFailedText, errorMsg, 'error');
    };

    export {
      uploadErrorNotification
    }

这是我的测试文件：

//test.js

import { uploadErrorNotification } from '../index.js

jest.mock('notification', () => ({ open: () => jest.fn() })); // was trying this but I couldn't understand how it will work

describe('Notification validation functions testing', () => {
  uploadErrorNotification('Upload failed', 'Something went wrong.');
  expect("openNotification").toHaveBeenCalledTimes(1); // want to do something like this
});