@nurun-sf/spark-component/tasks/test-watcher.js

A tool for building spark components

'use strict';

const comms = require('../lib/comms');

module.exports = function (gulp) {
  // Webpack can take longer than PhantomJS to spin up and start the tests, so
  // this waits until it's done.
  function waitForEvent(name, task) {

    return function () {
      var timerId;

      function ready() {
        clearTimeout(timerId);
        gulp.start(task);
      }

      comms.once(name, ready);

      // In case webpack was able to complete before we were notified of a file
      // change, time out after 2 seconds.
      timerId = setTimeout(function () {
        comms.removeListener(name, ready);
        ready();
      }, 2000);
    };
  }

  return function testWatcher() {
    gulp.watch('src/**/*.js', waitForEvent('webpacked:source', 'instrument-run'));
    gulp.watch([
      'tests/**/*.js',
      '!tests/**/specs.js',
    ], waitForEvent('webpacked:specs', 'test-run'));
  };
};