--- /dev/null
+<?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\HttpKernel\Tests\Profiler\Mock;
+
+/**
+ * MemcachedMock for simulating Memcached extension in tests.
+ *
+ * @author Andrej Hudec <pulzarraider@gmail.com>
+ */
+class MemcachedMock
+{
+ private $connected = false;
+ private $storage = array();
+
+ /**
+ * Set a Memcached option.
+ *
+ * @param int $option
+ * @param mixed $value
+ *
+ * @return bool
+ */
+ public function setOption($option, $value)
+ {
+ return true;
+ }
+
+ /**
+ * Add a memcached server to connection pool.
+ *
+ * @param string $host
+ * @param int $port
+ * @param int $weight
+ *
+ * @return bool
+ */
+ public function addServer($host, $port = 11211, $weight = 0)
+ {
+ if ('127.0.0.1' == $host && 11211 == $port) {
+ $this->connected = true;
+
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Add an item to the server only if such key doesn't exist at the server yet.
+ *
+ * @param string $key
+ * @param mixed $value
+ * @param int $expiration
+ *
+ * @return bool
+ */
+ public function add($key, $value, $expiration = 0)
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ if (!isset($this->storage[$key])) {
+ $this->storeData($key, $value);
+
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Store data at the server.
+ *
+ * @param string $key
+ * @param mixed $value
+ * @param int $expiration
+ *
+ * @return bool
+ */
+ public function set($key, $value, $expiration = null)
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ $this->storeData($key, $value);
+
+ return true;
+ }
+
+ /**
+ * Replace value of the existing item.
+ *
+ * @param string $key
+ * @param mixed $value
+ * @param int $expiration
+ *
+ * @return bool
+ */
+ public function replace($key, $value, $expiration = null)
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ if (isset($this->storage[$key])) {
+ $this->storeData($key, $value);
+
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Retrieve item from the server.
+ *
+ * @param string $key
+ * @param callable $cache_cb
+ * @param float $cas_token
+ *
+ * @return bool
+ */
+ public function get($key, $cache_cb = null, &$cas_token = null)
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ return $this->getData($key);
+ }
+
+ /**
+ * Append data to an existing item.
+ *
+ * @param string $key
+ * @param string $value
+ *
+ * @return bool
+ */
+ public function append($key, $value)
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ if (isset($this->storage[$key])) {
+ $this->storeData($key, $this->getData($key).$value);
+
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Delete item from the server.
+ *
+ * @param string $key
+ *
+ * @return bool
+ */
+ public function delete($key)
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ if (isset($this->storage[$key])) {
+ unset($this->storage[$key]);
+
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Flush all existing items at the server.
+ *
+ * @return bool
+ */
+ public function flush()
+ {
+ if (!$this->connected) {
+ return false;
+ }
+
+ $this->storage = array();
+
+ return true;
+ }
+
+ private function getData($key)
+ {
+ if (isset($this->storage[$key])) {
+ return unserialize($this->storage[$key]);
+ }
+
+ return false;
+ }
+
+ private function storeData($key, $value)
+ {
+ $this->storage[$key] = serialize($value);
+
+ return true;
+ }
+}