我正在尝试添加这个 phpunit 来学习 zend 框架 2，但我无法让它工作。我已经按照官方 zf2 教程（http://framework.zend.com/manual/2.0/en/user-guide/unit-testing.html）中的步骤进行操作，现在我正面临着某种错误消息无能为力
Warning: require_once(File/Iterator/Autoload.php): failed to open stream: No such file or directory in C:\xampp\php\pear\PHPUnit\Autoload.php on line 64
Fatal error: require_once(): Failed opening required 'File/Iterator/Autoload.php' (include_path='.;\php\zend_framework\library;\php\pear\PEAR') in C:\xampp\php\pear\PHPUnit\Autoload.php on line 64
PS C:\xampp\htdocs\new103\module\Application\test>