Private Tag in Torrent

Returns if the torrent is private or not
Im not sure how, havent done tests before, yet :-p

Would this be correct ?

/**
     * @expectedException RuntimeException
     * @covers PHP\BitTorrent\Torrent::getPrivateFlag
     */
    public function testGetPrivateFlagWithNoInfoBlockAdded() {
        $this->torrent->getPrivateFlag();
    }