How to focus/blur on a component in ember integration tests?

How can I trigger focus and blur events while testing an Ember.js component?

this.$().focus(); or this.$('input').focus(); seems working but behaves different in phantomjs and chrome.

Also this.$().blur(); or this.$().focusout(); seems not working both phantomjs and chrome.

Newer versions of Ember have test helpers which can be used to focus or blur.

... 
import { find, focus, blur, render } from '@ember/test-helpers';


module('Integration | Component | example-input', function(hooks) {
  
  test('it can be focused', async function(assert) {
    await render(hbs`<myInput />`);
    const input = find('input')
    
    await focus(input)
    await blur(input)
  });
  
});

blur: https://github.com/emberjs/ember-test-helpers/blob/master/API.md#blur

focus: https://github.com/emberjs/ember-test-helpers/blob/master/API.md#focus