 p = re.root.querySelector('x-project');
  var projected = testElement.root.querySelector('#projected');
  var d$ = p.queryDistributedElements('*');
  assert.equal(d$.length, 1);
  assert.equal(d$[0], projected);

});

test('getEffectiveChildNodes', function() {
  var rere = testElement.root.querySelector('x-rereproject');
  var re = rere.root.querySelector('x-reproject');
  var projected = testElement.root.querySelector('#projected');
  var c$ = re.getEffectiveChildNodes();
  assert.equal(c$.length, 3);
  