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path: root/scripts/tests/perft.bash
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#!/usr/bin/env bash

status=0

testPerft() {
    local fen="$1"
    local depth="$2"
    local expected="$3"

    echo ""

    result=$(./build/mono "perft" $depth "$fen")
    count=$(echo "$result" | jq -r '.result')
    took=$(echo "$result" | jq -r '.ms')
    if [ "$count" = "$expected" ]; then
        echo "Results match"
        echo "Took: $took ms"
    else
        echo "RESULTS DONT MATCH"
        echo "Took: $took ms"
        echo "Depth: $depth"
        echo "Fen: $fen"
        echo "Expected: $expected"
        echo "Got: $count"
        status=1
    fi
}

configs=(
    # starting pos
    "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1|1|20"
    "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1|2|400"
    "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1|3|8902"
    "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1|4|197281"
    "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1|5|4865609"

    # kiwipete
    "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq -|1|48"
    "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq -|2|2039"
    "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq -|3|97862"
    "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq -|4|4085603"

    # even more cool ones
    "8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1|1|14"
    "8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1|2|191"
    "8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1|3|2812"
    "8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1|4|43238"

    "r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1|1|6"
    "r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1|2|264"
    "r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1|3|9467"
    "r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1|4|422333"
)

for config in "${configs[@]}"; do
    IFS='|' read -r fen depth expected <<< "$config"
    testPerft "$fen" "$depth" "$expected"
    if [ $status -ne 0 ]; then
        exit "$status"
    fi
done