sReady', function() {
      Polymer({
        is: 'value-helper',

        properties: {
          value: {
            type: Object,
            notify: true
          }
        }
      });
    });
    </script>
  </dom-module>

  <script>
    describe('selecting items', function() {
      var table;
      var first, second, input;

      function waitUntil(fn, done) {
        setTimeout(function() {
          if (!fn()) {
            waitUntil(fn, done);
          } else {
            done();
          }
