ExpressJs — Testing Express Apps

Test your Express app using tools like Mocha, Chai, or Jest to ensure it works as expected.

npm install mocha chai supertest --save-dev

// test/app.test.js
const request = require('supertest');
const app = require('../app');

describe('GET /', () => {
  it('should return 200 OK', async () => {
    await request(app).get('/').expect(200);
  });
});