function initialize()
 {
     parent::initialize();
     $this->cache = new Doctrine_Cache_Array();
     $this->manager->setAttribute(Doctrine_Core::ATTR_QUERY_CACHE, $this->cache);
     $this->manager->setAttribute(Doctrine_Core::ATTR_RESULT_CACHE, $this->cache);
 }
<?php

require dirname(__FILE__) . '/Doctrine12TestSuite.php';
$time = microtime(true);
$memory = memory_get_usage(true);
$test = new Doctrine12TestSuite();
$test->initialize();
$test->run();
echo sprintf(" %11s | %6.2f |\n", number_format(memory_get_usage(true) - $memory), microtime(true) - $time);