Fix PHP7 type hint on controllers

src/Silex/AppArgumentValueResolver.php

@@ -34,7 +34,7 @@ class AppArgumentValueResolver implements ArgumentValueResolverInterface
      */
     public function supports(Request $request, ArgumentMetadata $argument)
     {
-        return $argument->getType() === Application::class || (null !== $argument->getType() && in_array(Application::class, class_parents($argument->getType()), true));
+        return null !== $argument->getType() && ($argument->getType() === Application::class || is_subclass_of($argument->getType(), Application::class));
     }
 
     /**

tests/Silex/Tests/ApplicationTest.php

@@ -177,6 +177,7 @@ class ApplicationTest extends \PHPUnit_Framework_TestCase
     public function testControllersAsMethods()
     {
         $app = new Application();
+        unset($app['exception_handler']);
 
         $app->get('/{name}', 'Silex\Tests\FooController::barAction');
 
@@ -186,12 +187,26 @@ class ApplicationTest extends \PHPUnit_Framework_TestCase
     public function testApplicationTypeHintWorks()
     {
         $app = new SpecialApplication();
+        unset($app['exception_handler']);
 
         $app->get('/{name}', 'Silex\Tests\FooController::barSpecialAction');
 
         $this->assertEquals('Hello Fabien in Silex\Tests\SpecialApplication', $app->handle(Request::create('/Fabien'))->getContent());
     }
 
+    /**
+     * @requires PHP 7.0
+     */
+    public function testPhp7TypeHintWorks()
+    {
+        $app = new SpecialApplication();
+        unset($app['exception_handler']);
+
+        $app->get('/{name}', 'Silex\Tests\Fixtures\Php7Controller::typehintedAction');
+
+        $this->assertEquals('Hello Fabien in Silex\Tests\SpecialApplication', $app->handle(Request::create('/Fabien'))->getContent());
+    }
+
     public function testHttpSpec()
     {
         $app = new Application();

tests/Silex/Tests/Fixtures/Php7Controller.php

+<?php
+
+/*
+ * This file is part of the Silex framework.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Silex\Tests\Fixtures;
+
+use Silex\Application;
+
+class Php7Controller
+{
+    public function typehintedAction(Application $application, string $name)
+    {
+        return 'Hello '.$application->escape($name).' in '.get_class($application);
+    }
+}