New Twiddle

controllers.application.js

import Ember from 'ember';
import { inject as service } from '@ember/service';
import { getOwner } from '@ember/application';

export default Ember.Controller.extend({
  routerService: service('router'),
  appName: 'Ember Twiddle',
  actions: {
    actionOne() {
      this.get('routerService').transitionTo('foo.bar.my-route', 1, { queryParams: { foo: 1 }});
    },
    actionTwo() {
     let routerMain = getOwner(this).lookup('router:main'); 
     routerMain.transitionTo('foo.bar.my-route', 2, { queryParams: { foo: 2 }});
    } 
  }
});

controllers.foo.bar.my-route.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: ['foo']
});

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('foo', { path: '/foo/:id' }, function() {
    this.route('bar', function() {
    	this.route('my-route');
    });
  });
  this.route('quux');
});

export default Router;

routes.application.js

import Ember from 'ember';
import { inject as service } from '@ember/service'
import { getOwner } from '@ember/application';

export default Ember.Route.extend({
 	routerService: service('router'), 
  actions: {
    actionThree() {
      this.get('routerService').transitionTo('foo.bar.my-route', 3, { queryParams: { foo: 3 }});
    },
    actionFour() {
      let routerMain = getOwner(this).lookup('router:main'); 
     routerMain.transitionTo('foo.bar.my-route', 4, { queryParams: { foo: 4 }});
    }
  }
});

routes.quux.js

import Ember from 'ember';
import { inject } from '@ember/service';

export default Ember.Route.extend({
 	routerService: inject('router'), 
  beforeModel() {
    this.get('routerService').transitionTo('foo.bar.my-route', 1, { queryParams: { foo: 1 }});
  }
});

templates.application.hbs

<button {{action 'actionOne' }}> Action1 </button>
<button {{action 'actionTwo' }}> Action2 </button>
<button {{action 'actionThree' }}> Action3 </button>
<button {{action 'actionFour' }}> Action4 </button>
{{link-to 'quux' 'quux'}}
{{outlet}}

templates.foo.bar.my-route.hbs

{{link-to 'Home' 'index' }}

tests.helpers.destroy-app.js

import { run } from '@ember/runloop';

export default function destroyApp(application) {
  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';
import { start } from 'ember-cli-qunit';

setResolver(resolver);
start();

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}