I use mocha, chai and promised chai. The test should fail but doesn't, I don't know what's going wrong, any suggestions?
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
})
})
I'm trying to test a promise that should be rejected, the test should fail, but the test succeeds
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Excerpted fromChai as Promised document
You can use
async /awaitor.then(() => {})to include multiple Promises in your test.These four tests will fail:
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 ); }); });Example:https://stackblitz.com/edit/node- a7t3tx?file=index.js