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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Cache
  * @subpackage Zend_Cache_Backend
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 
 /**
  * @see Zend_Cache_Backend_Interface
  */
 // require_once 'Zend/Cache/Backend/ExtendedInterface.php';
 
 /**
  * @see Zend_Cache_Backend
  */
 // require_once 'Zend/Cache/Backend.php';
 
 /**
  * @package    Zend_Cache
  * @subpackage Zend_Cache_Backend
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Cache_Backend_Test extends Zend_Cache_Backend implements Zend_Cache_Backend_ExtendedInterface
 {
     /**
      * Available options
      *
      * @var array available options
      */
     protected $_options = array();
 
     /**
      * Frontend or Core directives
      *
      * @var array directives
      */
     protected $_directives = array();
 
     /**
      * Array to log actions
      *
      * @var array $_log
      */
     private $_log = array();
 
     /**
      * Current index for log array
      *
      * @var int $_index
      */
     private $_index = 0;
 
     /**
      * Constructor
      *
      * @param  array $options associative array of options
      * @return void
      */
     public function __construct($options = array())
     {
         $this->_addLog('construct', array($options));
     }
 
     /**
      * Set the frontend directives
      *
      * @param  array $directives assoc of directives
      * @return void
      */
     public function setDirectives($directives)
     {
         $this->_addLog('setDirectives', array($directives));
     }
 
     /**
      * Test if a cache is available for the given id and (if yes) return it (false else)
      *
      * For this test backend only, if $id == 'false', then the method will return false
      * if $id == 'serialized', the method will return a serialized array
      * ('foo' else)
      *
      * @param  string  $id                     Cache id
      * @param  boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
      * @return string Cached datas (or false)
      */
     public function load($id, $doNotTestCacheValidity = false)
     {
         $this->_addLog('get', array($id, $doNotTestCacheValidity));
 
         if ( $id == 'false'
           || $id == 'd8523b3ee441006261eeffa5c3d3a0a7'
           || $id == 'e83249ea22178277d5befc2c5e2e9ace'
           || $id == '40f649b94977c0a6e76902e2a0b43587'
           || $id == '88161989b73a4cbfd0b701c446115a99'
           || $id == '205fc79cba24f0f0018eb92c7c8b3ba4'
           || $id == '170720e35f38150b811f68a937fb042d')
         {
             return false;
         }
         if ($id=='serialized') {
             return serialize(array('foo'));
         }
         if ($id=='serialized2') {
             return serialize(array('headers' => array(), 'data' => 'foo'));
         }
         if ( $id == '71769f39054f75894288e397df04e445' || $id == '615d222619fb20b527168340cebd0578'
           || $id == '8a02d218a5165c467e7a5747cc6bd4b6' || $id == '648aca1366211d17cbf48e65dc570bee'
           || $id == '4a923ef02d7f997ca14d56dfeae25ea7') {
             return serialize(array('foo', 'bar'));
         }
         if ( $id == 'f53c7d912cc523d9a65834c8286eceb9') {
             return serialize(array('foobar'));
         }
         return 'foo';
     }
 
     /**
      * Test if a cache is available or not (for the given id)
      *
      * For this test backend only, if $id == 'false', then the method will return false
      * (123456 else)
      *
      * @param  string $id Cache id
      * @return mixed|false false (a cache is not available) or "last modified" timestamp (int) of the available cache record
      */
     public function test($id)
     {
         $this->_addLog('test', array($id));
         if ($id=='false') {
             return false;
         }
         if (($id=='3c439c922209e2cb0b54d6deffccd75a')) {
             return false;
         }
         return 123456;
     }
 
     /**
      * Save some string datas into a cache record
      *
      * For this test backend only, if $id == 'false', then the method will return false
      * (true else)
      *
      * @param  string $data             Datas to cache
      * @param  string $id               Cache id
      * @param  array  $tags             Array of strings, the cache record will be tagged by each string entry
      * @param  int    $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime)
      * @return boolean True if no problem
      */
     public function save($data, $id, $tags = array(), $specificLifetime = false)
     {
         $this->_addLog('save', array($data, $id, $tags));
         if (substr($id,-5)=='false') {
             return false;
         }
         return true;
     }
 
     /**
      * Remove a cache record
      *
      * For this test backend only, if $id == 'false', then the method will return false
      * (true else)
      *
      * @param  string $id Cache id
      * @return boolean True if no problem
      */
     public function remove($id)
     {
         $this->_addLog('remove', array($id));
         if (substr($id,-5)=='false') {
             return false;
         }
         return true;
     }
 
     /**
      * Clean some cache records
      *
      * For this test backend only, if $mode == 'false', then the method will return false
      * (true else)
      *
      * Available modes are :
      * Zend_Cache::CLEANING_MODE_ALL (default)    => remove all cache entries ($tags is not used)
      * Zend_Cache::CLEANING_MODE_OLD              => remove too old cache entries ($tags is not used)
      * Zend_Cache::CLEANING_MODE_MATCHING_TAG     => remove cache entries matching all given tags
      *                                               ($tags can be an array of strings or a single string)
      * Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => remove cache entries not {matching one of the given tags}
      *                                               ($tags can be an array of strings or a single string)
      *
      * @param  string $mode Clean mode
      * @param  array  $tags Array of tags
      * @return boolean True if no problem
      */
     public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
     {
         $this->_addLog('clean', array($mode, $tags));
         if ($mode=='false') {
             return false;
         }
         return true;
     }
 
     /**
      * Get the last log
      *
      * @return string The last log
      */
     public function getLastLog()
     {
         return $this->_log[$this->_index - 1];
     }
 
     /**
      * Get the log index
      *
      * @return int Log index
      */
     public function getLogIndex()
     {
         return $this->_index;
     }
 
     /**
      * Get the complete log array
      *
      * @return array Complete log array
      */
     public function getAllLogs()
     {
         return $this->_log;
     }
 
     /**
      * Return true if the automatic cleaning is available for the backend
      *
      * @return boolean
      */
     public function isAutomaticCleaningAvailable()
     {
         return true;
     }
 
     /**
      * Return an array of stored cache ids
      *
      * @return array array of stored cache ids (string)
      */
     public function getIds()
     {
         return array(
             'prefix_id1', 'prefix_id2'
         );
     }
 
     /**
      * Return an array of stored tags
      *
      * @return array array of stored tags (string)
      */
     public function getTags()
     {
         return array(
             'tag1', 'tag2'
         );
     }
 
     /**
      * Return an array of stored cache ids which match given tags
      *
      * In case of multiple tags, a logical AND is made between tags
      *
      * @param array $tags array of tags
      * @return array array of matching cache ids (string)
      */
     public function getIdsMatchingTags($tags = array())
     {
         if ($tags == array('tag1', 'tag2')) {
             return array('prefix_id1', 'prefix_id2');
         }
 
         return array();
     }
 
     /**
      * Return an array of stored cache ids which don't match given tags
      *
      * In case of multiple tags, a logical OR is made between tags
      *
      * @param array $tags array of tags
      * @return array array of not matching cache ids (string)
      */
     public function getIdsNotMatchingTags($tags = array())
     {
         if ($tags == array('tag3', 'tag4')) {
             return array('prefix_id3', 'prefix_id4');
         }
 
         return array();
     }
 
     /**
      * Return an array of stored cache ids which match any given tags
      *
      * In case of multiple tags, a logical AND is made between tags
      *
      * @param array $tags array of tags
      * @return array array of any matching cache ids (string)
      */
     public function getIdsMatchingAnyTags($tags = array())
     {
         if ($tags == array('tag5', 'tag6')) {
             return array('prefix_id5', 'prefix_id6');
         }
 
         return array();
     }
 
     /**
      * Return the filling percentage of the backend storage
      *
      * @return int integer between 0 and 100
      */
     public function getFillingPercentage()
     {
         return 50;
     }
 
     /**
      * Return an array of metadatas for the given cache id
      *
      * The array must include these keys :
      * - expire : the expire timestamp
      * - tags : a string array of tags
      * - mtime : timestamp of last modification time
      *
      * @param string $id cache id
      * @return array array of metadatas (false if the cache id is not found)
      */
     public function getMetadatas($id)
     {
         return false;
     }
 
     /**
      * Give (if possible) an extra lifetime to the given cache id
      *
      * @param string $id cache id
      * @param int $extraLifetime
      * @return boolean true if ok
      */
     public function touch($id, $extraLifetime)
     {
         return true;
     }
 
     /**
      * Return an associative array of capabilities (booleans) of the backend
      *
      * The array must include these keys :
      * - automatic_cleaning (is automating cleaning necessary)
      * - tags (are tags supported)
      * - expired_read (is it possible to read expired cache records
      *                 (for doNotTestCacheValidity option for example))
      * - priority does the backend deal with priority when saving
      * - infinite_lifetime (is infinite lifetime can work with this backend)
      * - get_list (is it possible to get the list of cache ids and the complete list of tags)
      *
      * @return array associative of with capabilities
      */
     public function getCapabilities()
     {
         return array(
             'automatic_cleaning' => true,
             'tags'               => true,
             'expired_read'       => false,
             'priority'           => true,
             'infinite_lifetime'  => true,
             'get_list'           => true
         );
     }
 
     /**
      * Add an event to the log array
      *
      * @param  string $methodName MethodName
      * @param  array  $args       Arguments
      * @return void
      */
     private function _addLog($methodName, $args)
     {
         $this->_log[$this->_index] = array(
             'methodName' => $methodName,
             'args' => $args
         );
         $this->_index = $this->_index + 1;
     }
 
 }