equal(recorded[0].addedNodes.length, 1);
          assert.equal(recorded[0].addedNodes[0], child1);
          recorded = [];
          var child2 = document.createElement('div');
          ShadyDOM.wrap(d).appendChild(child2);
          handler(observer.takeRecords());
          assert.equal(recorded[0].addedNodes.length, 1);
          assert.equal(recorded[0].addedNodes[0], child2);
          recorded = [];
          ShadyDOM.wrap(d).removeChild(child1);
          ShadyDOM.wrap(d).removeChild(child2);
    