Actualización

vendor/symfony/framework-bundle/Tests/Kernel/ConcreteMicroKernel.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Kernel;
+
+use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
+use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
+use Symfony\Component\Config\Loader\LoaderInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\Routing\RouteCollectionBuilder;
+
+class ConcreteMicroKernel extends Kernel
+{
+    use MicroKernelTrait;
+
+    private $cacheDir;
+
+    public function halloweenAction()
+    {
+        return new Response('halloween');
+    }
+
+    public function registerBundles()
+    {
+        return array(
+            new FrameworkBundle(),
+        );
+    }
+
+    public function getCacheDir()
+    {
+        return $this->cacheDir = sys_get_temp_dir().'/sf_micro_kernel';
+    }
+
+    public function getLogDir()
+    {
+        return $this->cacheDir;
+    }
+
+    public function __destruct()
+    {
+        $fs = new Filesystem();
+        $fs->remove($this->cacheDir);
+    }
+
+    protected function configureRoutes(RouteCollectionBuilder $routes)
+    {
+        $routes->add('/', 'kernel:halloweenAction');
+    }
+
+    protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
+    {
+        $c->loadFromExtension('framework', array(
+            'secret' => '$ecret',
+        ));
+
+        $c->setParameter('halloween', 'Have a great day!');
+        $c->register('halloween', 'stdClass');
+    }
+}

vendor/symfony/framework-bundle/Tests/Kernel/MicroKernelTraitTest.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Kernel;
+
+use Symfony\Component\HttpFoundation\Request;
+
+class MicroKernelTraitTest extends \PHPUnit_Framework_TestCase
+{
+    public function test()
+    {
+        $kernel = new ConcreteMicroKernel('test', true);
+        $kernel->boot();
+
+        $request = Request::create('/');
+        $response = $kernel->handle($request);
+
+        $this->assertEquals('halloween', $response->getContent());
+        $this->assertEquals('Have a great day!', $kernel->getContainer()->getParameter('halloween'));
+        $this->assertInstanceOf('stdClass', $kernel->getContainer()->get('halloween'));
+    }
+}