How to run ember-cli > v0.2.x acceptance tests to run on CircleCI

test-helper.js

import resolver from './helpers/resolver';
import {
  setResolver
} from 'ember-qunit';

setResolver(resolver);

// Since CircleCI runs with PhantomJS 1.9.x, need this to make things
// green!
if (!Function.prototype.bind) {
  Function.prototype.bind = function(oThis) {
    if (typeof this !== 'function') {
      // closest thing possible to the ECMAScript 5
      // internal IsCallable function
      throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
    }

    var aArgs   = Array.prototype.slice.call(arguments, 1),
        fToBind = this,
        FunctionNOP    = function() {},
        FunctionBound  = function() {
          return fToBind.apply(this instanceof FunctionNOP ? this : oThis,
                               aArgs.concat(Array.prototype.slice.call(arguments)));
        };

    FunctionNOP.prototype = this.prototype;
    FunctionBound.prototype = new FunctionNOP();

    return FunctionBound;
  };
}