Dirty Property Test Case

application.controller.js

import Ember from 'ember';

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

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  init() {
    this._super();
    $.mockjax({
      url: '/authors/1',
      type: 'GET',
      responseText: {
        author: {
          id: 1,
        	name: 'Kerrick'
        }
      }
    });
    $.mockjax({
      url: '/authors/1',
      type: 'PUT',
      response: function(settings) {
        this.responseText = {
       	  author: {
          	id: 1,
         	  name: JSON.parse(settings.data).author.name
        	}
        }
      }
    });
  },
  model() {
    return this.store.find('author', 1);
  },
  actions: {
    save(model) {
      model.save();
    }
  }
});

application.template.hbs

<h1>Reduced Test Case</h1>
<br>
<br>
{{input value=model.name}}
<button {{action "save" model}}>
  {{#if model.isNameDirty}}
  save
  {{else}}
  saved
  {{/if}}
</button>
<br>
<br>

models.author.js

import DS from 'ember-data';
import Ember from 'ember';

export default DS.Model.extend({
  name: DS.attr('string'),
  isNameDirty: Ember.computed('name', 'hasDirtyAttributes', function() {
    if (!this.get('hasDirtyAttributes')) { return false }
    return !!this.changedAttributes()['name'];
  })
});

twiddle.json

{
  "version": "0.6.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "1.13.13",
    "ember-data": "1.13.15",
    "ember-template-compiler": "1.13.13",
    "jquery-mockjax": "https://cdnjs.cloudflare.com/ajax/libs/jquery-mockjax/1.6.2/jquery.mockjax.js"
  }
}