What are the differences between Supertest and Fetch?

What are the differences between Supertest and Fetch?

Supertest is a testing library specifically for HTTP assertions in Node.js, while Fetch is a web API for making network requests.

Can you give me an example of how to use Supertest?

Sure! Here's a simple example:

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

request(app)
  .get('/api/users')
  .expect('Content-Type', /json/)
  .expect(200)
  .end((err, res) => {
    if (err) throw err;
    console.log(res.body);
  });

What about Fetch? How do I use it?

Using Fetch is straightforward. Here's an example:

fetch('https://api.example.com/users')
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

Which one should I use for testing?

If you're writing tests for a Node.js application, Supertest is the better choice. For client-side applications, Fetch is more appropriate.