use criterion::{criterion_group, criterion_main, Criterion, Throughput};
use othello::repr::{Board, Piece};

fn fill_board(loops: usize) {
    let mut board = Board::new();
    board.place_unchecked((0, 1).into(), Piece::White);
    board.place_unchecked((0, 2).into(), Piece::Black);
    board.place_unchecked((0, 3).into(), Piece::Black);
    board.place_unchecked((0, 4).into(), Piece::Black);
    for _ in 0..loops {
        let mut board = board;
        let _ = board.place((0, 5).into(), Piece::White);
    }
}

fn criterion_benchmark(c: &mut Criterion) {
    let mut group = c.benchmark_group("board");

    const LOOPS: usize = 1000;

    group.throughput(Throughput::Elements(LOOPS as u64));
    group.bench_function("board_place", |b| {
        b.iter(|| fill_board(LOOPS));
    });
    group.finish();
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);