ust in case.
        expect(contentRect.left).to.be.equal(0 - contentRect.width - tooltip.offset);
        expect(contentRect.top).to.be.equal((divRect.height - contentRect.height)/2);
      });

      test('tooltip is fitted correctly if out of bounds', function() {
        var f = fixture('fitted');
        var target = f.querySelector('#target');
        var tooltip = f.querySelector('paper-tooltip');
        target.style.top = 0;
        target.style.left = 0;

        var actualTooltip = Polymer.dom(to