torAll('span').length, 0);
});

test('mutations using fragments without logical dom', function() {
  var d = document.createElement('div');
  document.body.appendChild(d);
  assert.equal(d.childNodes.length, 0);
  var frag = document.createDocumentFragment();
  var c = document.createElement('div');
  frag.appendChild(c);
  d.appendChild(frag);
  assert.equal(d.childNodes.length, 1);
  assert.equal(d.firstChild, c);
  var c1 = document.createElement('div');
  frag.appendChild(c1);
  d.appendChild(frag);
  a