New Twiddle

components.table-list.js

import Ember from 'ember';

export default Ember.Component.extend({
  tableMode: Ember.computed('mode', function() {
    return this.get('mode') === 'table';
  }),
  mode: 'table',
  actions: {
    toggleMode() {
      const mode = this.get('mode');
      
      if(mode === 'table') {
        this.set('mode', 'list'); 
      } else {
        this.set('mode', 'table'); 
      }
      
      this.sendAction('toggledYowza');
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  items: [
    { name: 'a', value: 1 },
    { name: 'b', value: 2 },
    { name: 'c', value: 3 }
  ]
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{#table-list items=items as |item parent|}}
  {{#if parent.tableMode}}
    <tr>
      <td>{{item.name}}</td>
      <td>({{item.value}})</td>
    </tr>
  {{else}}
    <li>{{item.name}} ({{item.value}})</li>
  {{/if}}
{{/table-list}}
<br>
<br>

templates.components.table-list.hbs

{{#if tableMode}}
  <table>
    <tbody>
      {{#each items as |item|}}
        {{yield item this}}
      {{/each}}
    </tbody>
  </table>
{{else}}
  <ol>
    {{#each items as |item|}}
      {{yield item this}}
    {{/each}}
  </ol>
{{/if}}

<button {{action "toggleMode"}}>Toggle</button>
  

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('table-list', 'TODO: put something here', {
  integration: true
});

test('it renders', function(assert) {
  // Set any properties with this.set('myProperty', 'value');
  // Handle any actions with this.on('myAction', function(val) { ... });
var worked = false;
  
  this.render(hbs`{{table-list toggledYowza="toggledYowza"}}`);
  this.on('toggledYowza', function() {
    worked = true;
  });
  
  assert.equal(this.$().text().trim(), 'Toggle');
  
  this.$('button').click();

  assert.equal(worked, true);
  
});

tests.test-helper.js

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

setResolver(resolver);

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}