No response from server using Jest

Jest throws “Exceeded timeout of 5000 ms” for a very simple test, this is the test code:

'use strict';

const request = require('supertest');
const app = require('./app.js'); // Link to your server file

test('Gets the test endpoint',  done => {
    // Sends GET Request to /test endpoint
    return request(app)
    .get('/search/')
    .expect(200)
  })

this is the server side code:

app.get('/search', function(req, res) {
  const rawdata = fs.readFileSync('questions.json');
  const questions = JSON.parse(rawdata);
  res.status(200).send(questions);
});

any help greatly appreciated