We recently started a new project using Web Components and Polymer. We want to add some behaviour driven tests, using Cucumber and Selenium but do not want to continue using our in-house grid of Selenium nodes. It has proven too time consuming and frustrating to set up and maintain them.

The goal is to have our CI system (GoCD) checkout and build pull requests (managed via Phabricator), deploy them to an S3 bucket on AWS, run the test suite, and update the request with the results. I may get into this in later posts.

After a little searching, I found two main players offering hosted selenium servers. BrowserStack and Sauce Labs. Since WCT has built in support for Sauce Labs, I decided to give it a try first.

We are using Gulp as a task runner, so I looked for gulp plugins that could help. I quickly found gulp-cucumber. Unfortunately, our app needs to access some internal API’s, so I needed to make use of Sauce Labs sauce-connect local tunnel service. I could not find a gulp plugin for this, but, I did find this little gist. So, borrowing heavily, I hacked together this little gulp file:

const gulp = require('gulp');
const cucumber = require('gulp-cucumber');
const sauceConnectLauncher = require('sauce-connect-launcher');

gulp.task('default', () => {
    username: process.env.SAUCE_USERNAME,
    accessKey: process.env.SAUCE_ACCESS_KEY
  }, (err, sauceConnectProcess) => {
    if (err) {
      throw err.message;
    console.log("Sauce Connect ready");

    return gulp.src('features/marko.feature')
      .on('error', function(e) {
        sauceConnectProcess.close(function () {
          console.log("Closed Sauce Connect process");
        throw e;
      .on('end', function(e) {
        sauceConnectProcess.close(function () {
          console.log("Closed Sauce Connect process");