lithium\core\ErrorHandler::reset PHP Method

    public static function reset()
    {
        static::$_config = array();
        static::$_checks = array();
        static::$_exceptionHandler = null;
        static::$_checks = array('type' => function ($config, $info) {
            return (bool) array_filter((array) $config['type'], function ($type) use($info) {
                return $type === $info['type'] || is_subclass_of($info['type'], $type);
            });
        }, 'code' => function ($config, $info) {
            return $config['code'] & $info['code'];
        }, 'stack' => function ($config, $info) {
            return (bool) array_intersect((array) $config['stack'], $info['stack']);
        }, 'message' => function ($config, $info) {
            return preg_match($config['message'], $info['message']);
        });
        $self = get_called_class();
        static::$_exceptionHandler = function ($exception, $return = false) use($self) {
            if (ob_get_length()) {
                ob_end_clean();
            }
            $info = compact('exception') + array('type' => get_class($exception), 'stack' => $self::trace($exception->getTrace()));
            foreach (array('message', 'file', 'line', 'trace') as $key) {
                $method = 'get' . ucfirst($key);
                $info[$key] = $exception->{$method}();
            }
            return $return ? $info : $self::handle($info);
        };
    }

 public function setUp()
 {
     if (!ErrorHandler::isRunning()) {
         ErrorHandler::run();
     }
     ErrorHandler::reset();
     $this->errors = array();
 }