Update ComponentKernel.php

Author: Nardberjean

tests/src/ComponentKernel.php

@@ -36,10 +36,16 @@ protected function configureRoutes(RouteCollectionBuilder $routes)
 
     protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
     {
+        // https://symfony.com/doc/current/service_container.html
         $c->autowire(Symfony\Component\Templating\TemplateNameParser::class)
             ->setAutoconfigured(true)
             ->setPublic(false);
 
+        $c->autowire(Twig_Loader_Array::class)
+            ->setArgument('$templates', ['index.html.twig' => 'Hello World!'])
+            ->setAutoconfigured(true)
+            ->setPublic(false);
+
         //Controllers
         $c->autowire(SymfonyUtil\Controller\EngineAsArgumentController::class)
             ->setAutoconfigured(true)