public function testLoad()
{
$container = new ContainerBuilder(new ParameterBag(['kernel.debug' => false]));
$params = ['contao' => ['encryption_key' => 'foobar', 'localconfig' => ['foo' => 'bar']]];
$extension = new ContaoCoreExtension();
$extension->load($params, $container);
$this->assertTrue($container->has('contao.listener.add_to_search_index'));
}