Nightwatch.js BrowserStack Runner

runner.js

// 1. start the dev server using production config
process.env.NODE_ENV = 'testing';

const server = require('../../build/dev-server.js');
const spawn = require('cross-spawn');
const browserStack = require('browserstack-local');
const testEnv = require('../../config/test.env.js');

// For more information on Nightwatch's config file, see
// http://nightwatchjs.org/guide#settings-file
let opts = process.argv.slice(2);

if (opts.indexOf('--config') === -1) {
  opts = opts.concat(['--config', 'test/e2e/nightwatch.conf.js']);
}

// Default environment: Chrome
// Override the environment flag, for example: `npm run e2e -- --env chrome,firefox`
if (opts.indexOf('--env') === -1) {
  opts = opts.concat(['--env', 'chrome']);
}

const browserStackTunnel = new browserStack.Local();

browserStackTunnel.start({
  key: testEnv.BROWSERSTACK_ACCESS_KEY || 'BROWSERSTACK_ACCESS_KEY',
}, (error) => {
  if (error) {
    browserStackTunnel.stop();
    throw error;
  }

  const runner = spawn('./node_modules/.bin/nightwatch', opts, {
    stdio: 'inherit',
  });

  runner.on('exit', (code) => {
    // Code to stop browserstack local after end of single test
    browserStackTunnel.stop();

    server.close();
    process.exit(code);
  });

  runner.on('error', (err) => {
    browserStackTunnel.stop();
    server.close();
    throw err;
  });
});