Arbitrary properties set via an object hash

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
	notMyInput: Ember.computed('myInput', function() {
  	return !this.get('myInput')
  })
});

controllers.application.js

import Ember from 'ember';
import fabric from 'fabric';

export default Ember.Controller.extend({
 parentInput: true,
  
 didInsertElement() {

    let canvas = new fabric.Canvas('pad', {
      isDrawingMode: false
    });
 		var redRect = new fabric.Rect({ 
      width: w, 
      height: h, 
      fill: 'red', 
      top: 15, 
      left: 50
    });
    var blueRect = new fabric.Rect({ 
      width: 20, 
      height: 30, 
      fill: 'blue', 
      top: 15, 
      left: 50 + w - 10 
    });        

    canvas.add(redRect);
    canvas.add(blueRect);   
    this.set('canvas', canvas); 
    
 },
  
 actions: {
    changeInput() {
      this.set(
        'parentInput',!this.get('parentInput')
      )
    },
   onObjectDblClick(event) {
   }
  }
});

templates.application.hbs

<div {{action "changeInput"}}>ParentInput:{{parentInput}}</div>
{{my-component
	myInput=parentInput
}}
<canvas  id="pad" width="300" height="200">
</canvas>

templates.components.my-component.hbs

<div style="color:red">myInput:{{myInput}}</div><div style="color:red">notMyInput:{{notMyInput}}</div>

tests.helpers.destroy-app.js

import Ember from 'ember';

export default function destroyApp(application) {
  Ember.run(application, 'destroy');
}

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.helpers.start-app.js

import Ember from 'ember';
import Application from '../../app';
import config from '../../config/environment';

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.test-helper.js

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

setResolver(resolver);

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {
  	"ember-cli-fabric2-shim": "^0.2.0"
  }
}