moduleFor() usage

login_test.js

import api from 'mn/utils/api';
import {moduleFor, test} from 'mn/tests/helpers/module_for';

var App, sandbox;

moduleFor('controller:login', 'Acceptances - Login', {
  setup: function() {
    App = startApp();
    sandbox = sinon.sandbox.create();
  },
  teardown: function() {
    Ember.run(App, 'destroy');
    sandbox.restore();
  }
});

test('user can login', function() {
  expect(3);

  var that = this;
  visit('/login').then(function() {
    var loginController = that.subject(),
        username = find('input[name="username"]'),
        password = find('input[name="password"]');

    equal(username.length, 1);
    equal(password.length, 1);

    sandbox.stub(api, 'authenticate', function() {
      return Ember.RSVP.resolve({
        token: 'thetoken',
        user: {
          login: 'login',
          firstName: 'Batman'
        }
      });
    });

    stop();
    loginController.addObserver('token', function() {
      start();
      ok(loginController.get('token'));
    });

    Em.run(function () {
      find('form').submit();
    });

  });
});