       var survey = fixture('survey');
        survey.querySelector('iron-localstorage').reload();

        survey.addEventListener('google-codelab-survey-answer', function(evt) {
          assert.equal(evt.detail.question, 'q');
          assert.equal(evt.detail.answer, 'Answer 1');

          survey.querySelector('iron-localstorage').save();
          var value = JSON.parse(ls.getItem(LS_KEY));
          assert.isNotNull(value);
          assert.equal(value.q, 'Answer 1');
          done();
        });

 