New Twiddle

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>

tests.helpers.destroy-app.js

import Ember from 'ember';

export default function destroyApp(application) {
  Ember.run(application, 'destroy');
}

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.helpers.start-app.js

import Ember from 'ember';
import Application from '../../app';
import config from '../../config/environment';

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.test-helper.js

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

setResolver(resolver);

tests.unit.utils.sorting-test.js

import { simpleSort, keepSorting } from 'twiddle/utils/sorting';
import { module, test } from 'qunit';

module('Unit | Utility | sorting');

test('keepSorting()', assert => {
  assert.expect(11);

  assert.equal(keepSorting(1, 0), 1);
  assert.equal(keepSorting(-1, 0), -1);
  assert.equal(keepSorting(0, 1), 1);
  assert.equal(keepSorting(0, -1), -1);
  assert.equal(keepSorting(0, 0), 0);

  assert.equal(keepSorting(1, -1, 1, -1, 1, -1, 1), 1);
  assert.equal(keepSorting(-1, 1, -1, 1, -1, 1, -1), -1);
  assert.equal(keepSorting(0, 0, 0, 0, 0, 0, 0, 1), 1);
  assert.equal(keepSorting(0, 0, 0, 0, 0, 0, 0, -1), -1);

  assert.equal(keepSorting(0, 0, 0, 0, 1, 0, 0, 0), 1);
  assert.equal(keepSorting(0, 0, 0, 0, -1, 0, 0, 0), -1);
});

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}

utils.sorting.js

/**
 * Returns the value of the first argument that is not 0.
 * @param {...Number} args Each argument must be -1, 0, or 1.
 */
export const keepSorting = (result, ...results) => {
  debugger; // So you can find the compiled version of this function
  return result !== 0 ? result : !results.length ? 0 : keepSorting(...results);
};