enter test

components.enter-test.js

import Ember from 'ember';

export default Ember.Component.extend({
  enter: null
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  counter: 0,
  actions: {
    incrementCounter() {
      this.set('counter', this.get('counter') + 1);
    },
    sendFakeEnter() {
      let e = Ember.$.Event('keydown');
      e.keyCode = 13;
      Ember.$('input').trigger(e);
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
Counter: {{counter}}
{{enter-test enter=(action 'incrementCounter')}}
<button {{action 'sendFakeEnter'}}>Send a fake Enter event to the input</button>
<br>
<br>

templates.components.enter-test.hbs

{{input enter=enter}}

twiddle.json

{
  "version": "0.8.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}