test service stubbing

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  myService: Ember.inject.service(),
  stuff: Ember.computed('myService.value', function() {
    return this.get('myService.value');
  })
});

controllers.application.js

import Ember from 'ember';

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

services.my-service.js

import Ember from 'ember';

export default Ember.Service.extend({
  value: 'real'
});

templates.application.hbs

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

templates.components.my-component.hbs

{{yield}}

{{stuff}}

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';
import Ember from 'ember';
const myServiceStub = Ember.Service.extend({
  value: 122
});

moduleForComponent('my-component', 'TODO: put something here', {
  integration: true,
  beforeEach: function() {
    //this.register('service:my-service', myServiceStub);
    this.inject.service('my-service');
  }
});

test('it renders', function(assert) {
  this.render(hbs`{{my-component}}`);

  assert.equal(this.$().text().trim(), 'real');

  this.set('my-service.value', 33);
  assert.equal(this.$().text().trim(), '33');

  // Template block usage:
  this.render(hbs`
    {{#my-component}}
      template block text
    {{/my-component}}
  `);

  assert.equal(this.$().text().trim(), 'template block text\n\n\n33');
});

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"
  }
}