Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php

@@ -0,0 +1,138 @@
+<?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\Component\HttpFoundation\Session\Storage;
+
+/**
+ * MockFileSessionStorage is used to mock sessions for
+ * functional testing when done in a single PHP process.
+ *
+ * No PHP session is actually started since a session can be initialized
+ * and shutdown only once per PHP execution cycle and this class does
+ * not pollute any session related globals, including session_*() functions
+ * or session.* PHP ini directives.
+ *
+ * @author Drak <drak@zikula.org>
+ */
+class MockFileSessionStorage extends MockArraySessionStorage
+{
+    /**
+     * @var string
+     */
+    private $savePath;
+
+    /**
+     * Constructor.
+     *
+     * @param string      $savePath Path of directory to save session files.
+     * @param string      $name     Session name.
+     * @param MetadataBag $metaBag  MetadataBag instance.
+     */
+    public function __construct($savePath = null, $name = 'MOCKSESSID', MetadataBag $metaBag = null)
+    {
+        if (null === $savePath) {
+            $savePath = sys_get_temp_dir();
+        }
+
+        if (!is_dir($savePath)) {
+            mkdir($savePath, 0777, true);
+        }
+
+        $this->savePath = $savePath;
+
+        parent::__construct($name, $metaBag);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function start()
+    {
+        if ($this->started) {
+            return true;
+        }
+
+        if (!$this->id) {
+            $this->id = $this->generateId();
+        }
+
+        $this->read();
+
+        $this->started = true;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function regenerate($destroy = false, $lifetime = null)
+    {
+        if (!$this->started) {
+            $this->start();
+        }
+
+        if ($destroy) {
+            $this->destroy();
+        }
+
+        return parent::regenerate($destroy, $lifetime);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save()
+    {
+        if (!$this->started) {
+            throw new \RuntimeException('Trying to save a session that was not started yet or was already closed');
+        }
+
+        file_put_contents($this->getFilePath(), serialize($this->data));
+
+        // this is needed for Silex, where the session object is re-used across requests
+        // in functional tests. In Symfony, the container is rebooted, so we don't have
+        // this issue
+        $this->started = false;
+    }
+
+    /**
+     * Deletes a session from persistent storage.
+     * Deliberately leaves session data in memory intact.
+     */
+    private function destroy()
+    {
+        if (is_file($this->getFilePath())) {
+            unlink($this->getFilePath());
+        }
+    }
+
+    /**
+     * Calculate path to file.
+     *
+     * @return string File path
+     */
+    private function getFilePath()
+    {
+        return $this->savePath.'/'.$this->id.'.mocksess';
+    }
+
+    /**
+     * Reads session from storage and loads session.
+     */
+    private function read()
+    {
+        $filePath = $this->getFilePath();
+        $this->data = is_readable($filePath) && is_file($filePath) ? unserialize(file_get_contents($filePath)) : array();
+
+        $this->loadSession();
+    }
+}