test('unauthenticated session - login() with valid credentials', function(assert) {
  assert.expect(1);
  let auth = this.subject();
  let data = { username: 'hacluster', password : 'hacluster'};

  return auth.authenticate(data).then(function() {
    assert.ok(true);
  }, function (err) {
    assert.ok(false);
  });
});