text: /* global sinon, setup, teardown */
  
  /**
   * __init.test.js is run before every test case.
   */
  window.debug = true;
  
  var AScene = require('aframe').AScene;
  
  beforeEach(function () {
    this.sinon = sinon.sandbox.create();
    // Stub to not create a WebGL context since Travis CI runs headless.
    this.sinon.stub(AScene.prototype, 'attachedCallback');
  });
  
  afterEach(function () {
    // Clean up any attached elements.
    ['canvas', 'a-assets', 'a-scene'].forEach(function (tagName) {
      var els = document.querySelectorAll(tagName);
      for (var i = 0; i < els.length; i++) {
        els[i].parentNode.removeChild(els[i]);
      }
    });
    AScene.scene = null;
  
    this.sinon.restore();
  });
  