Mocha doesn't wait for nodejs init to be done - node.js

Question

I'm trying to integration- and unit test with Mocha, but Mocha doesn't wait for any callback to be done (or in my case, promise to fulfill)...
One moment when I try to test, the promise get's fulfilled BEFORE the first integration test is done, the other moment it crashes...
server.js
const server = require('./app');
server.listen(process.env.PORT, () => {
console.log('Starting server.');
console.log('Displaying server information:');
console.log(`Host: http://localhost:${process.env.PORT}`);
});
app.js
require('babel/register');
/**
* Make some commonly used directories known to the process env
*/
process.env.ROOT_DIR = __dirname;
/**
* Setup Express server and the Express Router
*/
const express = require('express');
const bodyParser = require('body-parser');
const server = express();
// Parses the body for JSON object in the middleware so extra steps for
// parsing aren't required.
server.use(bodyParser.json());
server.use(bodyParser.urlencoded({extended: true}));
server.use((req, res, next) => {
console.log('url called', req.originalUrl);
next();
});
// This is the call which has the database set up in it
// This has a few generator functions in 'm
require('./init')(server);
/**
* Export
*/
// Define routes on the server.
module.exports = server;
integration test (which is the first one that gets fired)
import should from 'should';
import supertest from 'supertest';
import server from '../../app';
import co from 'co';
let request = supertest(server); // Set request to context of the app.
describe('Index', function () {
describe('GET /', function () {
it('returns 200', co.wrap(function * (done) {
const res = yield request
.get('/');
res.statusCode.should.equal(200);
}));
});
describe('GET /this_is_not_a_valid_route_123456', function () {
it('returns 404', function (done) {
request
.get('/this_is_not_a_valid_route_123456')
.expect(404, done);
});
});
});
command:
NODE_ENV=test ./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha -- ./test/ --recursive --compilers js:babel/register
Does anyone know how I can fix this?
Screenshot of what happens:
(Init done should be BEFORE the 'Index GET /' and directly after 'Init config repo...')

Answer 1

You can tell mocha to wait.
before(function (done) {
if (server.listening) return done();
server.on('listening', function() { done(); });
});
I'm not sure what's inside your init file but if you also want to wait for other events, you can add multiple before functions.