This Ember addon exposes testdouble-qunit so that you can easily consume it in your application.

First, install the library. It is assumed that your tests are already written in QUnit; ember-cli-testdouble will be installed for you if missing.

ember install ember-cli-testdouble-qunit

Next, install the assertion helper. Add the following anywhere in your tests/test-helper.js file:

// tests/test-helper.js
import 'ember-cli-testdouble-qunit';

And you're good to go!

This library adds a assert.verify method that allows you to verify that your stubs are called correctly.

test('the stub is called', function(assert) {
  const stub = td.function();

  stub('foo');

  assert.verify(stub('foo'));
});

For more information, check out the testdouble.js documentation.