How do I set up Express for testing?

How do I set up Express for testing?

To set up Express for testing, you can use tools like Mocha, Chai, and Supertest. Would you like a step-by-step guide?

Yes, please provide the steps.

First, install the necessary packages: npm install --save-dev mocha chai supertest. Next, create a test file, for example, test.js.

What should I include in the test file?

In the test file, require your Express app and use Supertest to make requests. You can write tests using Mocha and Chai assertions.

Can you show me an example of a test?

Sure! Here's a simple test:

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

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