如何让 Chai 处理多个数据库查询？

Question

我正在尝试了解 Express + Mocha/Chai 中的单元测试。
我正在尝试测试的 API 调用似乎在第一个异步函数超时后停止，请参阅下面的相关代码和控制台输出。
我不确定 API 本身或测试中是否遗漏了什么！

// controller.js
const { Alert } = require('../models');

exports.addAlert = async (req, res) => {
  const username = req.body.uploader !== "" ? req.body.uploader : "anonymous"
  const rowNumber = await Alert.count()
  const title = req.body.title !== "" ? req.body.title : parseInt(rowNumber) + 1

  const addedAlert = await Alert.findOrCreate({
    where: {
      coordinates: req.body.coordinates
    },
    defaults: {
      username: username,
      path: req.file.path,
      title: title
    }
  })

  addedAlert[1] ? 
    res.send(200).render('home', {
      formMessage: `Added alert ${title}`
    }) :
    res.send(303).render('home', {
      formMessage: 'Coordinates already taken.'
    })
};

// test.js
let chai = require('chai');
let chaiHttp = require('chai-http');
let server = require('../../app');
let should = chai.should();

chai.use(chaiHttp);
describe('/POST alert', () => {
  it('it should POST an alert', (done) => {
    chai.request(server)
      .post('/add-alert')
      .send({ username: "foo", title: "bar", coordinates: "baz", path: "foo/bar/baz" })
      .end((err, res) => {
        console.log(res.body)
        done();
      });
  });
});

//mocha tests/**/*.* --exit
/POST alert
Executing (default): SELECT count(*) AS `count` FROM `Alerts` AS `Alert`;
    1) it should POST an alert

  /*
  ** Other tests that are working fine
  */
  1 failing

  1) /POST alert
       it should POST an alert:
     Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/*..*/test.js)
      at listOnTimeout (internal/timers.js:554:17)
      at processTimers (internal/timers.js:497:7)

Answer 1

我解决了我自己的问题：Mocha 没有继续，因为我没有将我用 Multer 上传的文件传递给它。

这有效：

it('it should POST an alert', async function() {
    await request(server)
      .post('/add-alert')
      .set('Content-Type', 'multipart/form-data')
      .field('uploader', 'foo')
      .field('coordinates', 'bar')
      .field('title', 'baz')
      .attach('image',
        fs.readFileSync('./dist/images/image-1617995909552.jpg'),
        'image-1617995909552.jpg')
      .expect(200)
  });

如何让 Chai 处理多个数据库查询？

How do I make Chai handle multiple database queries?

javascript

node.js

express

mocha.js

chai