ripple;

      suite('when tapped', function () {
        setup(function () {
          rippleContainer = fixture('TrivialRipple');
          ripple = rippleContainer.firstElementChild;
        });

        test('creates a ripple', function () {
          expect(ripple.ripples.length).to.be.eql(0);
          MockInteractions.down(ripple);
          expect(ripple.ripples.length).to.be.eql(1);
        });

        test('may create multiple ripples that overlap', function () {
          expect(ripple.ripples.l