Chai 无法读取 属性 'should' of null

Question

使用 knex. I'm also referencing this https://mherman.org/blog/test-driven-development-with-node/

对单个项目进行单元测试时出现以下错误

它渲染 api/users/1 成功。所以不确定为什么它说空。

GET /api/users/:id Should return a single show : Uncaught TypeError: Cannot read property 'should' of null at should (tests/users.spec.js:59:26)

users.spec.js

import chai from 'chai';
import { expect } from 'chai';
import chaiHttp from 'chai-http';
import { assert } from 'assert'
import users from '../routes/users';
import request from 'supertest';


describe('GET /api/users/:id ', () =>{
    it('Should return a single show ', (done)=> {
       chai.request(users)
            .get('/users/1')
            .set('Accept', 'application/json')
            .end((response) => {
                // error begins here
                response.should.have.status(200);
                response.should.be.json; 
                response.body.should.be.a('object');
                response.body.should.have.property('id');
                response.body.name.should.equal(1);
                done()
            })          

    });
})

routes/users.js

users.get('/users/:id', (req, res) => {
    return knex('users').where({id: req.params.id})
        .then( (user) => {
            res.json({
                user: user
            })
        });
})

Answer 1

您正在从 chai 而不是 should 导入 expect。您可以更改：

response.should.have.status(200); 到 expect(response).to.have.status(200);（对所有的 should 语句执行此操作）

或通过更改导入：

import { expect } from 'chai'; 到 import { should } from 'chai';

希望对您有所帮助！