#[cfg(test)]
mod examples {
    use day50::{tic_tac_toe, Player};

    #[test]
    fn example1() {
        let board = [['X', 'O', 'O'], ['O', 'X', 'O'], ['O', '#', 'X']];
        assert_eq!(tic_tac_toe(&board), Some(Player::X));
    }
    #[test]
    fn example2() {
        let board = [['X', 'O', 'O'], ['O', 'X', 'O'], ['X', '#', 'O']];
        assert_eq!(tic_tac_toe(&board), Some(Player::O));
    }
    #[test]
    fn example3() {
        let board = [['X', 'X', 'O'], ['O', 'X', 'O'], ['X', 'O', '#']];
        assert_eq!(tic_tac_toe(&board), None);
    }
}