获取无效的Chai属性：'calledWith‘

Question

我正在为我的express应用程序设置单元测试。当我运行我的测试时，它失败了，并显示以下错误

import * as timestamp from './timestamp'
import chai, { expect } from 'chai'
import sinonChai from 'sinon-chai'
import { mockReq, mockRes } from 'sinon-express-mock'
//chai.use(sinonChai); <-- `I removed this because it was creating this error:: TypeError: Cannot read property 'use' of undefined`


describe('hello world', () => {

    it('should behave...', () => {
        const request = {
            body: {
              foo: 'bar',
            },
          }
          const req = mockReq(request)
          const res = mockRes()

          timestamp.timestamp(req, res)


          expect(res.json).to.have.been.calledWith({})

    });
});

Answer 1

我想是你的模块系统还是捆绑器(webpack?)弄得一团糟。这在我的示例中工作得很好：https://runkit.com/fatso83/chai-spy-example

前几天我在WebKit上看到了这一点，我通过将导入拆分成两行来修复它。尝试替换

import chai, { expect } from 'chai';

使用

import chai, from 'chai';
import { expect } from 'chai';