What are supertest assertions and how do I use them?

What are supertest assertions and how do I use them?

Supertest assertions are used in testing HTTP servers in Node.js. They allow you to verify the response of your API calls.

Can you give me an example of how to write a supertest assertion?

Sure! Here's a simple example:

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

request(app)
  .get('/api/users')
  .expect(200)
  .expect('Content-Type', /json/)
  .then(response => {
    // further assertions
  });

What should I do if my assertion fails?

If an assertion fails, check the response status and body. You can also add logging to see what went wrong.

Are there any best practices for using supertest?

Yes! Keep your tests isolated, use descriptive test names, and clean up any data after tests to avoid side effects.