New Twiddle

components.my-component\.js

import Ember from 'ember';

export default Ember.Component.extend({
});

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.acceptance.my-acceptance-test\.js

import { module, test } from 'qunit';
import { visit, currentURL } from '@ember/test-helpers';
import { setupApplicationTest } from 'ember-qunit';

module('TODO: put something here', function(hooks) {
  setupApplicationTest(hooks);

  test('visiting /', async function(assert) {
    await visit('/');

    assert.equal(currentURL(), '/');
  });
});

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

import { module, test } from 'qunit';
import { setupRenderingTest } from 'ember-qunit';
import { render } from '@ember/test-helpers';
import hbs from 'htmlbars-inline-precompile';

module('TODO: put something here', function(hooks) {
  setupRenderingTest(hooks);

  test('it renders', async function(assert) {
    // Set any properties with this.set('myProperty', 'value');
    // Handle any actions with this.set('myAction', function(val) { ... });

    await render(hbs`<MyComponent />`);

    assert.equal(this.element.textContent.trim(), '');

    // Template block usage:
    await render(hbs`
      <MyComponent>
        template block text
      </MyComponent>
    `);

    assert.equal(this.element.textContent.trim(), 'template block text');
  });
});

tests.test-helper\.js

import Application from '../app';
import config from '../config/environment';
import { setApplication } from '@ember/test-helpers';
import { assign } from '@ember/polyfills';
import { start } from 'ember-qunit';

let attributes = {
  rootElement: '#test-root',
  autoboot: false
};
attributes = assign(attributes, config.APP);

let application = Application.create(attributes);
setApplication(application);

start();

twiddle\.json

{
  "version": "0.17.0",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.14.3",
    "ember-template-compiler": "3.14.3",
    "ember-testing": "3.14.3"
  },
  "addons": {
    "ember-data": "3.14.1"
  }
}