diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 33b5fa7f34..5b64b4e524 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -18,6 +18,8 @@ use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 
 abstract class FrameworkExtensionTest extends TestCase
 {
+    private static $containerCache = array();
+
     abstract protected function loadFromFile(ContainerBuilder $container, $file);
 
     public function testCsrfProtection()
@@ -307,6 +309,10 @@ abstract class FrameworkExtensionTest extends TestCase
 
     protected function createContainerFromFile($file, $data = array())
     {
+        $cacheKey = md5($file.serialize($data));
+        if (isset(self::$containerCache[$cacheKey])) {
+            return self::$containerCache[$cacheKey];
+        }
         $container = $this->createContainer($data);
         $container->registerExtension(new FrameworkExtension());
         $this->loadFromFile($container, $file);
@@ -315,6 +321,6 @@ abstract class FrameworkExtensionTest extends TestCase
         $container->getCompilerPassConfig()->setRemovingPasses(array());
         $container->compile();
 
-        return $container;
+        return self::$containerCache[$cacheKey] = $container;
     }
 }