create a express app with app.js as
var express = require('express')
var app = express()
var port = 3000
app.listen(port,function(){
console.log(`Listening on port ${port}`)
})
app.get('/welcome',function (req,res,next){
res.json({
msg:"welcome",
data:{
name:"sangram"
}
})
})
module.exports = app;
then create index.js
var crypto = require('crypto');
function add(a, b) {
return a + b
}
function subtract(a, b) {
return a - b
}
function returnArray() {
return [1, 4, 9]
}
function myMd5(password,callback) {
var hash = crypto.createHash('md5')
.update(password)
.digest('hex');
callback(null, hash);
}
class Student{
constructor(name,age){
this.name = name;
this.age = age;
}
}
module.exports = {
add,
subtract,
returnArray,
myMd5,
Student
}
create folder tesr and add index.js
var myMath = require('../index')
let chai = require('chai');
const expect = require('chai').expect;
var should = require('chai').should();
let server = require('../app');
let chaiHttp = require('chai-http');
chai.use(chaiHttp);
describe('Math Expect Lib Test', function () {
it('1. Add', function (done) {
expect(myMath.add(2, 3)).to.equal(5);
done()
})
it('2. Subtract', function (done) {
expect(myMath.subtract(12, 3)).to.equal(9);
expect(myMath.subtract(12, 3)).to.deep.equal(9);
done()
})
it('3. returnArray', function (done) {
expect(myMath.returnArray()).to.be.an('array').that.includes(4);
expect(myMath.returnArray()).to.be.an('array').that.does.not.include(5);
expect(myMath.returnArray()).to.have.lengthOf(3);
done()
})
it('4. returnArray length', function (done) {
expect(myMath.returnArray()).to.have.lengthOf(3);
done()
})
it('5. md5', function (done) {
myMath.myMd5('sangram', function (err, result) {
expect(result)
.to.be.a('string')
.that.matches(/^[a-f0-9]{32}$/)
.and.equal('179ffaa9f8677595956d98a29905c077');
})
done()
})
it('6. class', function (done) {
var student = new myMath.Student()
expect(student).to.be.an.instanceof(myMath.Student);
done()
})
it('6. welcome', (done) => {
chai.request(server)
.get('/welcome')
.end((err, res) => {
expect(res.body.data).to.have.property('name').eql('sangram');
expect(res.statusCode).to.equal(200);
expect(res).to.have.nested.property('body.data.name');
expect(res).to.nested.include({ 'body.data.name': 'sangram' });
expect(res.body).to.have.own.property('data');
expect(res.body.data).to.have.any.keys('name', 'age');
expect(res.body).to.have.all.keys('data', 'msg');
expect(res.body).to.not.have.any.keys('error', 'message');
expect(res.body).to.have.ownPropertyDescriptor('data');
done();
});
});
})
describe('Math Should Lib Test', function () {
it('1. Add', function (done) {
myMath.add(2, 3).should.equal(5)
done()
})
it('2. Subtract', function (done) {
myMath.subtract(12, 3).should.equal(9)
done()
})
it('3. returnArray', function (done) {
myMath.returnArray().should.be.an('array').that.includes(9);
done()
})
it('4. returnArray length', function (done) {
myMath.returnArray().should.have.lengthOf(3);
done()
})
it('5. md5', function (done) {
myMath.myMd5('sangram', function (err, result) {
result.should.be.a('string').that.matches(/^[a-f0-9]{32}$/).equal('179ffaa9f8677595956d98a29905c077')
})
done()
})
it('6. welcome', (done) => {
chai.request(server)
.get('/welcome')
.end((err, res) => {
res.should.have.status(200);
res.body.should.be.a('object');
res.body.should.have.property('data');
res.body.data.should.have.property('name').eql('sangram');;
done();
});
});
})
here is package.json
{
"name": "interview006",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "mocha"
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"chai": "^4.3.7",
"mocha": "^10.2.0"
},
"dependencies": {
"chai-http": "^4.3.0",
"express": "^4.18.2"
}
}
i am using chai,mocha,chai-http,express.
Code for this example is at https://github.com/gitsangramdesai/chai-mocha
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