  </test-fixture>

  <test-fixture id="table">
    <template>
      <iron-data-table selection-enabled>
        <template is="row-details">
          <div>[[selected]]</div>
          <vaadin-combo-box items="[[items]]" selectedItem="{{selected}}"></vaadin-combo-box>
        </template>
        <data-table-column name="First">
          <template>
            <value-helper id="first" value="[[selected]]"></value-helper>
          </template>
        </data-table-column>
        <data-table-column name="Seco