Javascript jest.mock（）与sinon.stub（）等价吗

在测试Firebase SDK云功能Quickstart的所有示例中，都使用了Mocha/Chai和Sinon。。。试图改用Jest，我想知道sinon.stub（）的正确等价物是什么

我尝试了以下方法（仅用于测试jest.mock（）接受度）

const sinon = require('sinon');

const jest = require('jest');

describe('Cloud Functions', () => {

    before(() => {
      let myFunctions, adminInitStub;
      let adminInitMock;

      adminInitStub = sinon.stub(admin, 'initializeApp');
      adminInitMock = jest.mock(admin, 'initializeApp');

      myFunctions = require('../index');
      myFunctions = require('../index');

但我有一个错误：

1失败

1） 云功能 “一切之前”挂钩： TypeError:jest.mock不是函数

我错在什么地方了。。。但是我不能得到它 感谢您的反馈

已解决

从

However, when using export with require we would see an error such as:

TypeError: ourCode is not a function

The CommonJS module does not understand the ES Module it is trying to require. This is easily fixed, by adding a .functionNameBeingExported to the require, which for a default export is default.

externalModule.js
const ourCode = () => 'result';
export default ourCode;

testSubject.js
const ourCode = require('./externalModule').default;
// use ourCode()