Gulp task for running qUnit with zombiejs

qunit-zombie.js

// This is what your gulp task should look like
gulp.task('qunit', function(done) {
  var files = glob.sync('./test/**/*.html');
  runAllQunits(files);
});

// Runs through each qunit file (one at a time, though this could be relatively easily parallelized)
function runAllQunits(testFiles) {
  var browser = new Zombie();

  function errorTrace(errorNode, selector) {
    console.log(colors.yellow((errorNode.querySelector(selector) || {}).textContent));
  }

  function printErrors() {
    var errors = browser.document.querySelectorAll('#qunit-tests > .fail');
    Array.prototype.slice.call(errors, 0).forEach(function (error) {
      errorTrace(error, '.test-name');
      errorTrace(error, '.test-message');
      errorTrace(error, '.test-source');
    });
  }

  function printQunitResults() {
    var passed = browser.document.querySelector('#qunit-testresult .failed').textContent.trim() === '0',
      color = passed ? 'green' : 'red',
      text = browser.document.querySelector('#qunit-testresult').textContent;

    !passed && printErrors();

    console.log(colors[color](text));
    return text;
  }

  function cleanUp() {
    browser.close();
    done();
  }

  function testFile(file) {
    var url = 'file:/' + path.resolve(file);

    console.log('Running ' + file);

    browser.visit(url).then(printQunitResults).then(next);
  }

  function queueTest() {
    setTimeout(function () {
      testFile(testFiles.pop());
    });
  }

  function next() {
    if (testFiles.length) {
      queueTest();
    } else {
      cleanUp();
    }
  }

  next();
}