Demo assert regression

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  init(){
    this._super(...arguments);
    Ember.assert('{{my-component}} must receive a `foo` action', !!this.get('foo'));
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

templates.components.my-component.hbs

{{yield}}

tests.helpers.resolver.js

import Resolver from '../../resolver';
import config from '../../config/environment';

const resolver = Resolver.create();

resolver.namespace = {
  modulePrefix: config.modulePrefix,
  podModulePrefix: config.podModulePrefix
};

export default resolver;

tests.integration.components.my-component-test.js

import { moduleForComponent, test } from 'ember-qunit';
import hbs from 'htmlbars-inline-precompile';

moduleForComponent('my-component', 'Helps the user with assertions', {
  integration: true
});

test('it doesn\'t if the `foo` property is given', function(assert) {
  assert.expect(0);
  this.render(hbs`{{my-component foo="something"}}`);
});


test('it throws if the `foo` property is not given', function(assert) {
  assert.expect(1);
  assert.throws(function() {
    this.render(hbs`{{my-component}}`);
  }, /must receive a `foo` action/);
});

tests.test-helper.js

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

setResolver(resolver);

twiddle.json

{
  "version": "0.11.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.11.3",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.11.3",
    "ember-testing": "2.11.3"
  },
  "addons": {}
}