Run Mocha Tests

test.js

'use strict';

// 1. Create the file: {projectRoot}/test.js
// 2. Install dependencies: npm i glob why-is-node-running
// 3. Run the tests: node --expose-internals test.js

const whyIsNodeRunning = require('why-is-node-running');
const glob = require('glob');
const Mocha = require('mocha');

const mocha = new Mocha();
const testFiles = glob.sync('test/**/*.js');

console.log('testing files: ', testFiles);

testFiles.forEach(file => mocha.addFile(file));

mocha.run(() => {
  whyIsNodeRunning();
});

Mocha since version 4 does not exits the precess by default anymore - reference -, so this snippet helps out running the tests programmatically and figuring out why the process is still alive (may not be the case) when the tests execution have been finished,
which will be useful to apply the corresponding fixes or in last instance use its --exit flag/option if there is no way to avoid the process remain running.