private function _gen_authorize_ack() { $ack = new AuthorizeAckFrame(); $ack->status = 0; $ack->num_pipelet = 10; $ack->store(); $passed = $ack->buffer(); $ack->status = 10; $ack->error_message = 'failed'; $ack->store(); $failed = $ack->buffer(); $bad_ack = new UninitMetaAckFrame(); $bad_ack->status = 0; $bad_ack->store(); $bad = $bad_ack->buffer(); return array('passed' => $passed, 'failed' => $failed, 'bad' => $bad); }