es="selected">
    <template>
      <core-selector id="selector" selected="{{selected}}" valueattr="id">
        <content></content>
      </core-selector>
    </template>
  </polymer-element>

  <test-core-selector selected="item0">
    <div id="item0">item0</div>
    <div id="item1">item1</div>
    <div id="item2">item2</div>
    <div id="item3">item3</div>
  </test-core-selector>

  <script>
  
    var s = document.querySelector('test-core-selector');

    suite('content', function() {
      
      test(