為什麼我的 chai-as-promised 拒絕方法不能正常運作？

Question

我使用摩卡、柴和承諾的柴。 測試應該失敗，但沒有，我不知道出了什麼問題，有什麼建議嗎？

const { describe, it } = require('mocha')
const chai = require('chai')
const { expect } = require('chai')
const chaiAsPromised = require('chai-as-promised')

chai.use(chaiAsPromised)

describe('test', () => {
    it('must be rejected', async () => {
        expect(Promise.resolve('success')).to.rejected
    })
})

我試著測試一個應該被拒絕的承諾，測試應該失敗，但測試成功了

Answer 1

摘自Chai as Promised 文件

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您可以使用 async /await 或 .then(() => {}) 在測試中包含多個 Promise。

這四個測試將會失敗：

const { describe, it } = require('mocha');
const chai = require('chai');
const { expect } = require('chai');
const chaiAsPromised = require('chai-as-promised');

chai.use(chaiAsPromised);

describe('test', () => {
  it('must be rejected (1)', () => {
    return expect(Promise.resolve('success')).to.eventually.be.rejected;
  });

  it('must be rejected (2)', (done) => {
    expect(Promise.resolve('success')).to.eventually.be.rejected.notify(done);
  });

  it('must be rejected (3)', async () => {
    await expect(Promise.resolve('success1')).to.eventually.be.fulfilled;
    return expect(Promise.resolve('success2')).to.eventually.be.rejected;
  });

  it('must be rejected (4)', () => {
    return expect(Promise.resolve('success1')).to.eventually.be.fulfilled.then(
      () => expect(Promise.resolve('success2')).to.eventually.be.rejected
    );
  });
});

實例：https://stackblitz.com/edit/node- a7t3tx?file=index.js

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