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Implemented move tests and benchmarks
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package octad | ||
// | ||
//import ( | ||
// "log" | ||
// "testing" | ||
//) | ||
// | ||
//type moveTest struct { | ||
// pos *Position | ||
// m *Move | ||
// postPos *Position | ||
//} | ||
// | ||
//var ( | ||
// validMoves = []moveTest{ | ||
// // pawn moves | ||
// {m: &Move{s1: E2, s2: E4}, pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1")}, | ||
// {m: &Move{s1: A2, s2: A3}, pos: unsafeOFEN("8/8/8/8/8/8/P7/8 w - - 0 1")}, | ||
// {m: &Move{s1: A7, s2: A6}, pos: unsafeOFEN("8/p7/8/8/8/8/8/8 b - - 0 1")}, | ||
// {m: &Move{s1: A7, s2: A5}, pos: unsafeOFEN("8/p7/8/8/8/8/8/8 b - - 0 1")}, | ||
// {m: &Move{s1: C4, s2: B5}, pos: unsafeOFEN("8/8/8/1p1p4/2P5/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: C4, s2: D5}, pos: unsafeOFEN("8/8/8/1p1p4/2P5/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: C4, s2: C5}, pos: unsafeOFEN("8/8/8/1p1p4/2P5/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: C5, s2: B4}, pos: unsafeOFEN("8/8/8/2p5/1P1P4/8/8/8 b - - 0 1")}, | ||
// {m: &Move{s1: C5, s2: D4}, pos: unsafeOFEN("8/8/8/2p5/1P1P4/8/8/8 b - - 0 1")}, | ||
// {m: &Move{s1: C5, s2: C4}, pos: unsafeOFEN("8/8/8/2p5/1P1P4/8/8/8 b - - 0 1")}, | ||
// {m: &Move{s1: A4, s2: B3}, pos: unsafeOFEN("2r3k1/1q1nbppp/r3p3/3pP3/pPpP4/P1Q2N2/2RN1PPP/2R4K b - b3 0 23")}, | ||
// {m: &Move{s1: A2, s2: A1, promo: Queen}, pos: unsafeOFEN("8/8/8/8/8/8/p7/8 b - - 0 1")}, | ||
// {m: &Move{s1: E7, s2: E6}, pos: unsafeOFEN("r2qkbnr/pppnpppp/8/3p4/6b1/1P3NP1/PBPPPP1P/RN1QKB1R b KQkq - 2 4")}, | ||
// // knight moves | ||
// {m: &Move{s1: E4, s2: F6}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: D6}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: G5}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: G3}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: D2}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: C3}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: C5}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: B8, s2: D7}, pos: unsafeOFEN("rn1qkb1r/pp3ppp/2p1pn2/3p4/2PP4/2NQPN2/PP3PPP/R1B1K2R b KQkq - 0 7")}, | ||
// {m: &Move{s1: F6, s2: E4}, pos: unsafeOFEN("r1b1k2r/ppp2ppp/2p2n2/4N3/4P3/2P5/PPP2PPP/R1BK3R b kq - 0 8")}, | ||
// // bishop moves | ||
// {m: &Move{s1: E4, s2: H7}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: D5}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: B1}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// // rook moves | ||
// {m: &Move{s1: B2, s2: B4}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: B7}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: A2}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: H2}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: E1, s2: E8}, pos: unsafeOFEN("r3r1k1/p4p1p/3p4/1p4p1/2pP4/2P2P2/PP3P1P/R3RK2 w - g6 0 22")}, | ||
// // queen moves | ||
// {m: &Move{s1: B2, s2: E5}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: A1}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: A2}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: H2}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: D8, s2: D1}, pos: unsafeOFEN("r1bqk2r/ppp2ppp/2p2n2/4N3/4P3/2P5/PPP2PPP/R1BQK2R b KQkq - 0 7")}, | ||
// // king moves | ||
// {m: &Move{s1: E4, s2: E5}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: E3}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: D3}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: D4}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: D5}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: E5}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// // castleing | ||
// {m: &Move{s1: E1, s2: G1}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")}, | ||
// {m: &Move{s1: E1, s2: C1}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")}, | ||
// {m: &Move{s1: E8, s2: G8}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R b KQkq - 0 1")}, | ||
// {m: &Move{s1: E8, s2: C8}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R b KQkq - 0 1")}, | ||
// // king moving in front of enemy pawn https://en.lichess.org/4HXJOtpN#75 | ||
// {m: &Move{s1: F8, s2: G7}, pos: unsafeOFEN("3rrk2/8/2p3P1/1p2nP1p/pP2p3/P1B1NbPB/2P2K2/5R2 b - - 1 38")}, | ||
// } | ||
// | ||
// invalidMoves = []moveTest{ | ||
// // out of turn moves | ||
// {m: &Move{s1: E7, s2: E5}, pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1")}, | ||
// {m: &Move{s1: E2, s2: E4}, pos: unsafeOFEN("rnbqkbnr/1ppppppp/p7/8/8/8/PPPPPPPP/RNBQKBNR b KQkq - 0 1")}, | ||
// // pawn moves | ||
// {m: &Move{s1: E2, s2: D3}, pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1")}, | ||
// {m: &Move{s1: E2, s2: F3}, pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1")}, | ||
// {m: &Move{s1: E2, s2: E5}, pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1")}, | ||
// {m: &Move{s1: A2, s2: A1}, pos: unsafeOFEN("8/8/8/8/8/8/p7/8 b - - 0 1")}, | ||
// {m: &Move{s1: E6, s2: E5}, pos: unsafeOFEN(`2b1r3/2k2p1B/p2np3/4B3/8/5N2/PP1K1PPP/3R4 b - - 2 1`)}, | ||
// {m: &Move{s1: H7, s2: H5}, pos: unsafeOFEN(`2bqkbnr/rpppp2p/2n2p2/p5pB/5P2/4P3/PPPP2PP/RNBQK1NR b KQk - 4 6`)}, | ||
// // knight moves | ||
// {m: &Move{s1: E4, s2: F2}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: F3}, pos: unsafeOFEN("8/8/8/3pp3/4N3/8/5B2/8 w - - 0 1")}, | ||
// // bishop moves | ||
// {m: &Move{s1: E4, s2: C6}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: E5}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: E4}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: F3}, pos: unsafeOFEN("8/8/8/3pp3/4B3/5N2/8/8 w - - 0 1")}, | ||
// // rook moves | ||
// {m: &Move{s1: B2, s2: B1}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: C3}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: B8}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: G7}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1R6/1B6 w - - 0 1")}, | ||
// // queen moves | ||
// {m: &Move{s1: B2, s2: B1}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: C4}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: B8}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// {m: &Move{s1: B2, s2: G7}, pos: unsafeOFEN("8/1p5b/4N3/4p3/8/8/1Q6/1B6 w - - 0 1")}, | ||
// // king moves | ||
// {m: &Move{s1: E4, s2: F3}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: F4}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// {m: &Move{s1: E4, s2: F5}, pos: unsafeOFEN("5r2/8/8/8/4K3/8/8/8 w - - 0 1")}, | ||
// // castleing | ||
// {m: &Move{s1: E1, s2: B1}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")}, | ||
// {m: &Move{s1: E8, s2: B8}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R b KQkq - 0 1")}, | ||
// {m: &Move{s1: E1, s2: C1}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R2QK2R w KQkq - 0 1")}, | ||
// {m: &Move{s1: E1, s2: C1}, pos: unsafeOFEN("2r1k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")}, | ||
// {m: &Move{s1: E1, s2: C1}, pos: unsafeOFEN("3rk2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")}, | ||
// {m: &Move{s1: E1, s2: G1}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R w Qkq - 0 1")}, | ||
// {m: &Move{s1: E1, s2: C1}, pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R w Kkq - 0 1")}, | ||
// // invalid promotion for non-pawn move | ||
// {m: &Move{s1: B8, s2: D7, promo: Pawn}, pos: unsafeOFEN("rn1qkb1r/pp3ppp/2p1pn2/3p4/2PP4/2NQPN2/PP3PPP/R1B1K2R b KQkq - 0 7")}, | ||
// // en passant on doubled pawn file https://en.lichess.org/TnRtrHxf#24 | ||
// {m: &Move{s1: E3, s2: F6}, pos: unsafeOFEN("r1b2rk1/pp2b1pp/1qn1p3/3pPp2/1P1P4/P2BPN2/6PP/RN1Q1RK1 w - f6 0 13")}, | ||
// // can't move piece out of pin (even if checking enemy king) https://en.lichess.org/JCRBhXH7#62 | ||
// {m: &Move{s1: E1, s2: E7}, pos: unsafeOFEN("4R3/1r1k2pp/p1p5/1pP5/8/8/1PP3PP/2K1Rr2 w - - 5 32")}, | ||
// // invalid one up pawn capture | ||
// {m: &Move{s1: E6, s2: E5}, pos: unsafeOFEN(`2b1r3/2k2p1B/p2np3/4B3/8/5N2/PP1K1PPP/3R4 b - - 2 1`)}, | ||
// // invalid two up pawn capture | ||
// {m: &Move{s1: H7, s2: H5}, pos: unsafeOFEN(`2bqkbnr/rpppp2p/2n2p2/p5pB/5P2/4P3/PPPP2PP/RNBQK1NR b KQk - 4 6`)}, | ||
// // invalid pawn move d5e4 | ||
// {m: &Move{s1: D5, s2: E4}, pos: unsafeOFEN(`rnbqkbnr/pp2pppp/8/2pp4/3P4/4PN2/PPP2PPP/RNBQKB1R b KQkq - 0 3`)}, | ||
// } | ||
// | ||
// positionUpdates = []moveTest{ | ||
// { | ||
// m: &Move{s1: E2, s2: E4}, | ||
// pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"), | ||
// postPos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1"), | ||
// }, | ||
// { | ||
// m: &Move{s1: E1, s2: G1, tags: KingSideCastle}, | ||
// pos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1"), | ||
// postPos: unsafeOFEN("r3k2r/8/8/8/8/8/8/R4RK1 b kq - 0 1"), | ||
// }, | ||
// { | ||
// m: &Move{s1: A4, s2: B3, tags: EnPassant}, | ||
// pos: unsafeOFEN("2r3k1/1q1nbppp/r3p3/3pP3/pPpP4/P1Q2N2/2RN1PPP/2R4K b - b3 0 23"), | ||
// postPos: unsafeOFEN("2r3k1/1q1nbppp/r3p3/3pP3/11pP4/PpQ2N2/2RN1PPP/2R4K w - - 0 24"), | ||
// }, | ||
// { | ||
// m: &Move{s1: E1, s2: G1, tags: KingSideCastle}, | ||
// pos: unsafeOFEN("r2qk2r/pp1n1ppp/2pbpn2/3p4/2PP4/1PNQPN2/P4PPP/R1B1K2R w KQkq - 1 9"), | ||
// postPos: unsafeOFEN("r2qk2r/pp1n1ppp/2pbpn2/3p4/2PP4/1PNQPN2/P4PPP/R1B2RK1 b kq - 0 9"), | ||
// }, | ||
// } | ||
//) | ||
// | ||
//func unsafeOFEN(s string) *Position { | ||
// pos, err := decodeOFEN(s) | ||
// if err != nil { | ||
// log.Fatal(err) | ||
// } | ||
// return pos | ||
//} | ||
// | ||
//func TestValidMoves(t *testing.T) { | ||
// for _, mt := range validMoves { | ||
// if !moveIsValid(mt.pos, mt.m, false) { | ||
// log.Println(mt.pos.String()) | ||
// log.Println(mt.pos.board.Draw()) | ||
// log.Println(mt.pos.ValidMoves()) | ||
// log.Println("In Check:", squaresAreAttacked(mt.pos, mt.pos.board.whiteKingSq)) | ||
// // log.Println("In Check:", mt.pos.inCheck()) | ||
// mt.pos.turn = mt.pos.turn.Other() | ||
// t.Fatalf("expected move %s to be valid", mt.m) | ||
// } | ||
// } | ||
//} | ||
// | ||
//func TestInvalidMoves(t *testing.T) { | ||
// for _, mt := range invalidMoves { | ||
// if moveIsValid(mt.pos, mt.m, false) { | ||
// log.Println(mt.pos.String()) | ||
// log.Println(mt.pos.board.Draw()) | ||
// t.Fatalf("expected move %s to be invalid", mt.m) | ||
// } | ||
// } | ||
//} | ||
// | ||
//func TestPositionUpdates(t *testing.T) { | ||
// for _, mt := range positionUpdates { | ||
// if !moveIsValid(mt.pos, mt.m, true) { | ||
// log.Println(mt.pos.String()) | ||
// log.Println(mt.pos.board.Draw()) | ||
// log.Println(mt.pos.ValidMoves()) | ||
// t.Fatalf("expected move %s %v to be valid", mt.m, mt.m.tags) | ||
// } | ||
// | ||
// postPos := mt.pos.Update(mt.m) | ||
// if postPos.String() != mt.postPos.String() { | ||
// t.Fatalf("starting from board \n%s%s\n after move %s\n expected board to be %s\n%s\n but was %s\n%s\n", | ||
// mt.pos.String(), | ||
// mt.pos.board.Draw(), | ||
// mt.m.String(), | ||
// mt.postPos.String(), | ||
// mt.postPos.board.Draw(), | ||
// postPos.String(), | ||
// postPos.board.Draw(), | ||
// ) | ||
// } | ||
// } | ||
//} | ||
// | ||
//type perfTest struct { | ||
// pos *Position | ||
// nodesPerDepth []int | ||
//} | ||
// | ||
///* https://www.chessprogramming.org/Perft_Results */ | ||
//var perfResults = []perfTest{ | ||
// {pos: unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"), nodesPerDepth: []int{ | ||
// 20, 400, 8902, 197281, | ||
// // 4865609, 119060324, 3195901860, 84998978956, 2439530234167, 69352859712417 | ||
// }}, | ||
// {pos: unsafeOFEN("r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1"), nodesPerDepth: []int{ | ||
// 48, 2039, 97862, | ||
// // 4085603, 193690690 | ||
// }}, | ||
// {pos: unsafeOFEN("8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1"), nodesPerDepth: []int{ | ||
// 14, 191, 2812, 43238, 674624, | ||
// // 11030083, 178633661 | ||
// }}, | ||
// {pos: unsafeOFEN("r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1"), nodesPerDepth: []int{ | ||
// 6, 264, 9467, 422333, | ||
// // 15833292, 706045033 | ||
// }}, | ||
// {pos: unsafeOFEN("r2q1rk1/pP1p2pp/Q4n2/bbp1p3/Np6/1B3NBn/pPPP1PPP/R3K2R b KQ - 0 1"), nodesPerDepth: []int{ | ||
// 6, 264, 9467, 422333, | ||
// // 15833292, 706045033 | ||
// }}, | ||
// {pos: unsafeOFEN("rnbq1k1r/pp1Pbppp/2p5/8/2B5/8/PPP1NnPP/RNBQK2R w KQ - 1 8"), nodesPerDepth: []int{ | ||
// 44, 1486, 62379, | ||
// // 2103487, 89941194 | ||
// }}, | ||
// {pos: unsafeOFEN("r4rk1/1pp1qppp/p1np1n2/2b1p1B1/2B1P1b1/P1NP1N2/1PP1QPPP/R4RK1 w - - 0 10"), nodesPerDepth: []int{ | ||
// 46, 2079, 89890, | ||
// // 3894594, 164075551, 6923051137, 287188994746, 11923589843526, 490154852788714 | ||
// }}, | ||
//} | ||
// | ||
//func TestPerfResults(t *testing.T) { | ||
// for _, perf := range perfResults { | ||
// countMoves(t, perf.pos, []*Position{perf.pos}, perf.nodesPerDepth, len(perf.nodesPerDepth)) | ||
// } | ||
//} | ||
// | ||
//func countMoves(t *testing.T, originalPosition *Position, positions []*Position, nodesPerDepth []int, maxDepth int) { | ||
// if len(nodesPerDepth) == 0 { | ||
// return | ||
// } | ||
// depth := maxDepth - len(nodesPerDepth) + 1 | ||
// expNodes := nodesPerDepth[0] | ||
// newPositions := make([]*Position, 0) | ||
// for _, pos := range positions { | ||
// for _, move := range pos.ValidMoves() { | ||
// newPos := pos.Update(move) | ||
// newPositions = append(newPositions, newPos) | ||
// } | ||
// } | ||
// gotNodes := len(newPositions) | ||
// if expNodes != gotNodes { | ||
// t.Errorf("Depth: %d Expected: %d Got: %d", depth, expNodes, gotNodes) | ||
// t.Log("##############################") | ||
// t.Log("# Original position info") | ||
// t.Log("###") | ||
// t.Log(originalPosition.String()) | ||
// t.Log(originalPosition.board.Draw()) | ||
// t.Log("##############################") | ||
// t.Log("# Details in JSONL (https://jsonlines.org)") | ||
// t.Log("###") | ||
// for _, pos := range positions { | ||
// t.Logf(`{"position": "%s", "moves": %d}`, pos.String(), len(pos.ValidMoves())) | ||
// } | ||
// } | ||
// countMoves(t, originalPosition, newPositions, nodesPerDepth[1:], maxDepth) | ||
//} | ||
// | ||
//func BenchmarkValidMoves(b *testing.B) { | ||
// pos := unsafeOFEN("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1") | ||
// b.ResetTimer() | ||
// for n := 0; n < b.N; n++ { | ||
// pos.ValidMoves() | ||
// pos.validMoves = nil | ||
// } | ||
//} | ||
// | ||
//func moveIsValid(pos *Position, m *Move, useTags bool) bool { | ||
// for _, move := range pos.ValidMoves() { | ||
// if move.s1 == m.s1 && move.s2 == m.s2 && move.promo == m.promo { | ||
// if useTags { | ||
// if m.tags != move.tags { | ||
// return false | ||
// } | ||
// } | ||
// return true | ||
// } | ||
// } | ||
// return false | ||
//} | ||
|
||
import ( | ||
"log" | ||
"testing" | ||
) | ||
|
||
func unsafeOFEN(s string) *Position { | ||
pos, err := decodeOFEN(s) | ||
if err != nil { | ||
log.Fatal(err) | ||
} | ||
return pos | ||
} | ||
|
||
type perfTest struct { | ||
pos *Position | ||
nodesPerDepth []int | ||
} | ||
|
||
/* https://www.chessprogramming.org/Perft_Results */ | ||
var perfResults = []perfTest{ | ||
{pos: unsafeOFEN("ppkn/4/4/NKPP w NCFncf - 0 1"), nodesPerDepth: []int{ | ||
10, 84, 642, 4348, 29171, 183118, | ||
}}, | ||
{pos: unsafeOFEN("ppkn/4/2P1/NK1P w NCFncf - 0 1"), nodesPerDepth: []int{ | ||
10, 75, 538, 3407, | ||
}}, | ||
} | ||
|
||
func TestPerfResults(t *testing.T) { | ||
for _, perf := range perfResults { | ||
countMoves(t, perf.pos, []*Position{perf.pos}, perf.nodesPerDepth, len(perf.nodesPerDepth)) | ||
} | ||
} | ||
|
||
func countMoves(t *testing.T, originalPosition *Position, positions []*Position, nodesPerDepth []int, maxDepth int) { | ||
if len(nodesPerDepth) == 0 { | ||
return | ||
} | ||
depth := maxDepth - len(nodesPerDepth) + 1 | ||
expNodes := nodesPerDepth[0] | ||
newPositions := make([]*Position, 0) | ||
for _, pos := range positions { | ||
for _, move := range pos.ValidMoves() { | ||
newPos := pos.Update(move) | ||
newPositions = append(newPositions, newPos) | ||
} | ||
} | ||
gotNodes := len(newPositions) | ||
if expNodes != gotNodes { | ||
t.Errorf("Depth: %d Expected: %d Got: %d", depth, expNodes, gotNodes) | ||
t.Log("##############################") | ||
t.Log("# Original position info") | ||
t.Log("###") | ||
t.Log(originalPosition.String()) | ||
t.Log(originalPosition.board.Draw()) | ||
t.Log("##############################") | ||
t.Log("# Details in JSONL (https://jsonlines.org)") | ||
t.Log("###") | ||
for _, pos := range positions { | ||
t.Logf(`{"position": "%s", "moves": %d}`, pos.String(), len(pos.ValidMoves())) | ||
} | ||
} | ||
countMoves(t, originalPosition, newPositions, nodesPerDepth[1:], maxDepth) | ||
} | ||
|
||
func BenchmarkValidMoves(b *testing.B) { | ||
pos := unsafeOFEN("ppkn/4/4/NKPP w NCFncf - 0 1") | ||
b.ResetTimer() | ||
for n := 0; n < b.N; n++ { | ||
pos.ValidMoves() | ||
pos.validMoves = nil | ||
} | ||
} |