MemcachedMock.php

<?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;
  private $storage;
  public function __construct() {
    $this->connected = false;
    $this->storage = array();
  }

  /**
   * Set a Memcached option
   *
   * @param integer $option
   * @param mixed   $value
   *
   * @return boolean
   */
  public function setOption($option, $value) {
    return true;
  }

  /**
   * Add a memcached server to connection pool
   *
   * @param string  $host
   * @param integer $port
   * @param integer $weight
   *
   * @return boolean
   */
  public function addServer($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 integer $expiration
   *
   * @return boolean
   */
  public function add($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 integer $expiration
   *
   * @return boolean
   */
  public function set($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 integer $expiration
   *
   * @return boolean
   */
  public function replace($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    $cas_token
   *
   * @return boolean
   */
  public function get($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 $value
   *
   * @return boolean
   */
  public function append($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 $key
   *
   * @return boolean
   */
  public function delete($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 boolean
   */
  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;
  }

}