public function testSaveAndLoad()
{
if (class_exists('Memcache')) {
$str = 'This is my test variable. It contains a string.';
$c = Cache::factory(new Memcached(), 30);
$c->save('str', $str);
$this->assertEquals($str, $c->load('str'));
$c->remove('str');
$c->clear();
}
}