ember-service-unit-test

controllers.application.js

import Ember from 'ember';

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

services.store-caller.js

import Ember from 'ember';

export default Ember.Service.extend({
  store: Ember.inject.service(),

    setSomeProps(modelparam, idparam) {
       let that = this;
        this.get('store').find(modelparam, idparam)
          .then((someData) => {
            console.log(someData['name']);
            that.set('someProp', someData['name']);
          });
    }

});

templates.application.hbs

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

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.test-helper.js

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

setResolver(resolver);

tests.unit.services.store-caller-test.js

import { moduleFor, test } from 'ember-qunit';
import wait from 'ember-test-helpers/wait';

moduleFor('service:store-caller', 'TODO: put something here', {
  beforeEach:function(){
    this.register('service:store', Ember.Service.extend(
      {
        find() {
          console.log('inside mockfind');
          return new Ember.RSVP.resolve({name:'abc'});
        }
      }
    )
   );
  }
});

// Replace this with your real tests.
test('it exists', function(assert) {
  let service = this.subject();
  assert.ok(service);
});

test('test setSomeProps method', function(assert){
  let service = this.subject();
  assert.ok(service);
  let res = service.setSomeProps('a', 'b');
  return wait().then(()=>{
  	assert.equal(service.get('someProp'), 'abc');
  });
});

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": true
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}