updated route_factory service to use Pimple 2 factory method

src/Silex/Application.php

@@ -78,9 +78,9 @@ class Application extends \Pimple implements HttpKernelInterface, TerminableInte
         });
 
         $this['route_class'] = 'Silex\\Route';
-        $this['route_factory'] = function () use ($app) {
+        $this['route_factory'] = $this->factory(function () use ($app) {
             return new $app['route_class']();
-        };
+        });
 
         $this['exception_handler'] = function () use ($app) {
             return new ExceptionHandler($app['debug']);

tests/Silex/Tests/ApplicationTest.php

@@ -497,6 +497,18 @@ class ApplicationTest extends \PHPUnit_Framework_TestCase
         $response = $app->handle(Request::create('/foo'));
         $this->assertEquals(301, $response->getStatusCode());
     }
+
+    public function testBeforeFilterOnMountedControllerGroupIsolatedToGroup()
+    {
+        $app = new Application();
+        $app->match('/', function() { return new Response('ok'); });
+        $mounted = $app['controllers_factory'];
+        $mounted->before(function() { return new Response('not ok'); });
+        $app->mount('/group', $mounted);
+
+        $response = $app->handle(Request::create('/'));
+        $this->assertEquals('ok', $response->getContent());
+    }
 }
 
 class FooController