# Test your express server using jest and supertest

First of all, it's really easy

Step1: Install jest and supertest

npm install jest supertest

Step2: Add this to your package.json inside scripts

"test": "jest "

Step3: Create a folder named test and create file server.test.js

const request = require('supertest');  
const app = require('../index.js');  
  
describe('Test name', () => {  
  
    it('test add book', async () => {  
        const res = await request(app)  
            .post('/addbook')  
            .send({  
  
                book: "Norwegian Wood",  
                author: "Haruki Muramaki"           
  
            });  
  
        expect(res.statusCode).toEqual(200);  
        expect(res.body.status).toEqual('ADDED');  
  
    });  
      
     
  
            
})

Step4: Run the test and you are done

npm test

You are done enjoy testing your api’s.

Cheers!.