Ember Concurrency Test

controllers.application.js

import Ember from 'ember';
import { task, timeout } from 'ember-concurrency';

export default Ember.Controller.extend({
  messages: Ember.computed(() => []),
  
  parent: task(function*() {
    try {
      yield this.get('child').perform();
    } catch (error) {
      this.get('messages').pushObject(error.message);
    }
  }),
  
  child: task(function*() {
    yield this.get('grandchild').perform();
  }),
  
  grandchild: task(function*() {
    throw new Error('boom');
  })
});

templates.application.hbs

<button {{action (perform parent)}}>Perform Parent</button>

{{#each messages as |message|}}
	<li>{{message}}</li>
{{/each}}

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js",
    "babel-polyfill":"https://cdn.rawgit.com/nicksrandall/babel-polyfill/master/browser-polyfill.js"
  },
  "addons": {
    "ember-concurrency": "0.6.2"
  }
}