How can I test my Express.js API?

How can I test my Express.js API?

You can use tools like Postman or automated testing frameworks like Mocha and Chai to test your Express.js API.

Can you show me an example of a test using Mocha?

Sure! Here's a simple test example:

const request = require('supertest');
const app = require('../app'); // your Express app

describe('GET /api/users', () => {
  it('responds with json', (done) => {
    request(app)
      .get('/api/users')
      .expect('Content-Type', /json/)
      .expect(200, done);
  });
});

What about testing with Postman?

In Postman, you can create a new request, set the method to GET, enter your API endpoint, and then click 'Send' to see the response.

Are there any best practices for API testing?

Yes! Some best practices include testing all endpoints, using meaningful test data, and automating your tests whenever possible.