sChanged);
          done();
        });
      });

      test('to nothing selected', function() {
        assert.equal(s1.selected, null);
      });

      test('to iron-selected as selectedClass', function() {
        assert.equal(s1.selectedClass, 'iron-selected');
      });

      test('to false as multi', function() {
        assert.isFalse(s1.multi);
      });

      test('to tap as activateEvent', function() {
        assert.equal(s1.activateEvent, 'tap');
      });

      test('to nothing as attrFor