testGetClassForState() {
    const renderer = new ControlRenderer();
    assertUndefined(
        'State-to-class map must not exist until first use',
        renderer.classByState_);
    assertEquals(
        'Renderer must return expected class name for SELECTED',
        'goog-control-selected',
        renderer.getClassForState(Component.State.SELECTED));
    assertUndefined(
        'Renderer must return undefined for invalid state',
        renderer.getClassForState('foo'));
  }
@suppress {missingProperties,visibility,checkTypes} suppression added to
     enable type checking