Merge branch '2.3' into 2.7

* 2.3:
  [Process] Remove a misleading comment
  Improve the phpdoc of SplFileInfo methods
  [Process] Use stream based storage to avoid memory issues
  Fixed the documentation of VoterInterface::supportsAttribute
  Remove useless duplicated tests
  [FrameworkBundle] Optimize framework extension tests
  Use is_subclass_of instead of Reflection when possible

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -22,6 +22,8 @@
 
 abstract class FrameworkExtensionTest extends TestCase
 {
+    private static $containerCache = array();
+
     abstract protected function loadFromFile(ContainerBuilder $container, $file);
 
     public function testCsrfProtection()
@@ -470,6 +472,10 @@ protected function createContainer(array $data = array())
 
     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, $file);
@@ -478,7 +484,7 @@ protected function createContainerFromFile($file, $data = array())
         $container->getCompilerPassConfig()->setRemovingPasses(array());
         $container->compile();
 
-        return $container;
+        return self::$containerCache[$cacheKey] = $container;
     }
 
     protected function createContainerFromClosure($closure, $data = array())

src/Symfony/Component/Finder/SplFileInfo.php

@@ -38,6 +38,8 @@ public function __construct($file, $relativePath, $relativePathname)
     /**
      * Returns the relative path.
      *
+     * This path does not contain the file name.
+     *
      * @return string the relative path
      */
     public function getRelativePath()
@@ -48,6 +50,8 @@ public function getRelativePath()
     /**
      * Returns the relative path name.
      *
+     * This path contains the file name.
+     *
      * @return string the relative path name
      */
     public function getRelativePathname()

src/Symfony/Component/HttpFoundation/Tests/RequestTest.php

@@ -17,11 +17,6 @@
 
 class RequestTest extends \PHPUnit_Framework_TestCase
 {
-    public function testConstructor()
-    {
-        $this->testInitialize();
-    }
-
     public function testInitialize()
     {
         $request = new Request();

src/Symfony/Component/Process/Process.php

@@ -240,9 +240,6 @@ public function mustRun($callback = null)
      * The callback receives the type of output (out or err) and some bytes from
      * the output in real-time while writing the standard input to the process.
      * It allows to have feedback from the independent process during execution.
-     * If there is no callback passed, the wait() method can be called
-     * with true as a second parameter then the callback will get all data occurred
-     * in (and since) the start call.
      *
      * @param callable|null $callback A PHP callback to run whenever there is some
      *                                output available on STDOUT or STDERR
@@ -474,7 +471,11 @@ public function getOutput()
 
         $this->readPipes(false, '\\' === DIRECTORY_SEPARATOR ? !$this->processInformation['running'] : true);
 
-        return $this->stdout;
+        if (false === $ret = stream_get_contents($this->stdout, -1, 0)) {
+            return '';
+        }
+
+        return $ret;
     }
 
     /**
@@ -492,16 +493,13 @@ public function getIncrementalOutput()
     {
         $this->requireProcessIsStarted(__FUNCTION__);
 
-        $data = $this->getOutput();
-
-        $latest = substr($data, $this->incrementalOutputOffset);
+        $latest = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset);
+        $this->incrementalOutputOffset = ftell($this->stdout);
 
         if (false === $latest) {
             return '';
         }
 
-        $this->incrementalOutputOffset = strlen($data);
-
         return $latest;
     }
 
@@ -536,7 +534,11 @@ public function getErrorOutput()
 
         $this->readPipes(false, '\\' === DIRECTORY_SEPARATOR ? !$this->processInformation['running'] : true);
 
-        return $this->stderr;
+        if (false === $ret = stream_get_contents($this->stderr, -1, 0)) {
+            return '';
+        }
+
+        return $ret;
     }
 
     /**
@@ -555,16 +557,13 @@ public function getIncrementalErrorOutput()
     {
         $this->requireProcessIsStarted(__FUNCTION__);
 
-        $data = $this->getErrorOutput();
-
-        $latest = substr($data, $this->incrementalErrorOutputOffset);
+        $latest = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset);
+        $this->incrementalErrorOutputOffset = ftell($this->stderr);
 
         if (false === $latest) {
             return '';
         }
 
-        $this->incrementalErrorOutputOffset = strlen($data);
-
         return $latest;
     }
 
@@ -795,23 +794,33 @@ public function stop($timeout = 10, $signal = null)
     /**
      * Adds a line to the STDOUT stream.
      *
+     * @internal
+     *
      * @param string $line The line to append
      */
     public function addOutput($line)
     {
         $this->lastOutputTime = microtime(true);
-        $this->stdout .= $line;
+
+        fseek($this->stdout, 0, SEEK_END);
+        fwrite($this->stdout, $line);
+        fseek($this->stdout, $this->incrementalOutputOffset);
     }
 
     /**
      * Adds a line to the STDERR stream.
      *
+     * @internal
+     *
      * @param string $line The line to append
      */
     public function addErrorOutput($line)
     {
         $this->lastOutputTime = microtime(true);
-        $this->stderr .= $line;
+
+        fseek($this->stderr, 0, SEEK_END);
+        fwrite($this->stderr, $line);
+        fseek($this->stderr, $this->incrementalErrorOutputOffset);
     }
 
     /**
@@ -1393,8 +1402,8 @@ private function resetProcessData()
         $this->exitcode = null;
         $this->fallbackStatus = array();
         $this->processInformation = null;
-        $this->stdout = null;
-        $this->stderr = null;
+        $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'wb+');
+        $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'wb+');
         $this->process = null;
         $this->latestSignal = null;
         $this->status = self::STATUS_READY;

src/Symfony/Component/Security/Core/Authorization/Voter/VoterInterface.php

@@ -27,7 +27,7 @@ interface VoterInterface
     /**
      * Checks if the voter supports the given attribute.
      *
-     * @param string $attribute An attribute
+     * @param mixed $attribute An attribute (usually the attribute name string)
      *
      * @return bool true if this Voter supports the attribute, false otherwise
      */

src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php

@@ -59,8 +59,6 @@ public function supportsNormalization($data, $format = null)
      */
     public function supportsDenormalization($data, $type, $format = null)
     {
-        $class = new \ReflectionClass($type);
-
-        return $class->isSubclassOf('Symfony\Component\Serializer\Normalizer\DenormalizableInterface');
+        return is_subclass_of($type, 'Symfony\Component\Serializer\Normalizer\DenormalizableInterface');
     }
 }