I find I often forget the syntax on handling async side-effects in ember testing. Acceptance tests have this mostly hidden from the user but my tests are usually integration heavy.

In this case I will search the internet for quite some time till I find the right answer.

Check your package.json for the version of ember-cli-qunit. And depending on the version you will need to use one of the following patterns.

ember-cli-qunit 4.0

import { moduleForComponent, test } from 'ember-qunit';
import { default as settled } from 'ember-test-helpers/wait';
import hbs from 'htmlbars-inline-precompile';

ember-cli-qunit 4.1+

import { moduleForComponent, test, settled } from 'ember-qunit';
import hbs from 'htmlbars-inline-precompile';

Usage with async/await

test('Funny async method', async function(assert) {
  this.render(hbs`{{my-component}}`);
  await settled();
  assert.ok(true, 'waited for funny async method');
});

Usage with promise chaining

test('Funny async method', function() {
  this.render(hbs`{{my-component}}`);
  return settled().then(() => {
    assert.ok(true, 'waited for funny async method');
  });
});