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NodeJS Unit testing frameworks

Mocha Asynchronous (async/await)


const { expect } = require('chai')
describe('Suite Name', function() {
 describe('#method()', function() {
 it('should run without an error', async function() {
 const result = await answerToTheUltimateQuestion()
 expect(result).to.be.equal(42)
 })
 })
})

Mocha synchronous


describe('Suite Name', function() {
 describe('#method()', function() {
 it('should run without an error', function() {
 expect([ 1, 2, 3 ].length).to.be.equal(3)
 })
 })
})

Mocha asynchronous (callback)


var expect = require("chai").expect;
describe('Suite Name', function() {
 describe('#method()', function() {
 it('should run without an error', function(done) {
 testSomething(err => {
 expect(err).to.not.be.equal(null)
 done()
 })
 })
 })
})


Conclusion

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