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droidfish/CuckooChessEngine/test/chess/MoveGenTest.java
Peter Osterlund f2946fe6c7 Moved CuckooChessEngine project to trunk/
2011-11-12 19:43:53 +00:00

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/*
CuckooChess - A java chess program.
Copyright (C) 2011 Peter Österlund, peterosterlund2@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package chess;
import java.util.ArrayList;
import java.util.List;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
*
* @author petero
*/
public class MoveGenTest {
public MoveGenTest() {
}
@BeforeClass
public static void setUpClass() throws Exception {
}
@AfterClass
public static void tearDownClass() throws Exception {
}
/**
* Test of pseudoLegalMoves method, of class MoveGen.
*/
@Test
public void testPseudoLegalMoves() throws ChessParseError {
System.out.println("pseudoLegalMoves");
String fen = "8/3k4/8/2n2pP1/1P6/1NB5/2QP4/R3K2R w KQ f6 0 2";
Position pos = TextIO.readFEN(fen);
assertEquals(fen, TextIO.toFEN(pos));
List<String> strMoves = getMoveList(pos, false);
assertTrue(strMoves.contains("a1d1"));
assertTrue(!strMoves.contains("a1e1"));
assertTrue(!strMoves.contains("a1f1"));
assertTrue(strMoves.contains("a1a7"));
assertTrue(strMoves.contains("e1f2"));
assertTrue(!strMoves.contains("e1g3"));
assertTrue(strMoves.contains("c3f6"));
assertTrue(!strMoves.contains("b3d2"));
// Test castling
assertTrue(strMoves.contains("e1g1"));
assertTrue(strMoves.contains("e1c1"));
assertEquals(49, strMoves.size());
pos.setPiece(Position.getSquare(4,3), Piece.BROOK);
strMoves = getMoveList(pos, false);
assertTrue(!strMoves.contains("e1g1")); // In check, no castling possible
assertTrue(!strMoves.contains("e1c1"));
pos.setPiece(Position.getSquare(4, 3), Piece.EMPTY);
pos.setPiece(Position.getSquare(5, 3), Piece.BROOK);
strMoves = getMoveList(pos, false);
assertTrue(!strMoves.contains("e1g1")); // f1 attacked, short castle not possible
assertTrue(strMoves.contains("e1c1"));
pos.setPiece(Position.getSquare(5, 3), Piece.EMPTY);
pos.setPiece(Position.getSquare(6, 3), Piece.BBISHOP);
strMoves = getMoveList(pos, false);
assertTrue(strMoves.contains("e1g1")); // d1 attacked, long castle not possible
assertTrue(!strMoves.contains("e1c1"));
pos.setPiece(Position.getSquare(6, 3), Piece.EMPTY);
pos.setCastleMask(1 << Position.A1_CASTLE);
strMoves = getMoveList(pos, false);
assertTrue(!strMoves.contains("e1g1")); // short castle right has been lost
assertTrue(strMoves.contains("e1c1"));
}
/**
* Test of pseudoLegalMoves method, of class MoveGen. Pawn moves.
*/
@Test
public void testPawnMoves() throws ChessParseError {
System.out.println("pawnMoves");
String fen = "1r2k3/P1pppp1p/8/1pP3p1/1nPp2P1/n4p1P/1P2PP2/4KBNR w K b6 0 1";
Position pos = TextIO.readFEN(fen);
assertEquals(fen, TextIO.toFEN(pos));
List<String> strMoves = getMoveList(pos, false);
assertTrue(strMoves.contains("c5b6")); // En passant capture
assertTrue(strMoves.contains("a7a8q")); // promotion
assertTrue(strMoves.contains("a7a8n")); // under promotion
assertTrue(strMoves.contains("a7b8r")); // capture promotion
assertTrue(strMoves.contains("b2b3")); // pawn single move
assertTrue(strMoves.contains("b2a3")); // pawn capture to the left
assertTrue(strMoves.contains("e2e4")); // pawn double move
assertTrue(strMoves.contains("e2f3")); // pawn capture to the right
assertEquals(22, strMoves.size());
pos.setEpSquare(-1);
strMoves = getMoveList(pos, false);
assertEquals(21, strMoves.size()); // No ep, one less move possible
// Check black pawn moves
pos.setWhiteMove(false);
strMoves = getMoveList(pos, false);
assertTrue(strMoves.contains("f3e2"));
assertTrue(strMoves.contains("d4d3"));
assertTrue(strMoves.contains("e7e6"));
assertTrue(strMoves.contains("e7e5"));
assertEquals(28, strMoves.size());
// Check black pawn promotion
pos.setPiece(Position.getSquare(0,1), Piece.BPAWN);
strMoves = getMoveList(pos, false);
assertTrue(strMoves.contains("a2a1q"));
assertTrue(strMoves.contains("a2a1r"));
assertTrue(strMoves.contains("a2a1n"));
assertTrue(strMoves.contains("a2a1b"));
}
/**
* Test of inCheck method, of class MoveGen.
*/
@Test
public void testInCheck() {
System.out.println("inCheck");
Position pos = new Position();
pos.setPiece(Position.getSquare(4,2), Piece.WKING);
pos.setPiece(Position.getSquare(4,7), Piece.BKING);
assertEquals(false, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(3,3), Piece.BQUEEN);
assertEquals(true, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(3,3), Piece.BROOK);
assertEquals(false, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(3,3), Piece.BPAWN);
assertEquals(true, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(3,3), Piece.EMPTY);
pos.setPiece(Position.getSquare(5,3), Piece.WQUEEN);
assertEquals(false, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(4, 6), Piece.BROOK);
assertEquals(true, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(4, 4), Piece.WPAWN);
assertEquals(false, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(2, 3), Piece.BKNIGHT);
assertEquals(true, MoveGen.inCheck(pos));
pos.setPiece(Position.getSquare(2, 3), Piece.EMPTY);
pos.setPiece(Position.getSquare(0, 4), Piece.BKNIGHT);
assertEquals(false, MoveGen.inCheck(pos));
}
/**
* Test of givesCheck method, of class MoveGen.
*/
@Test
public void testGivesCheck() throws ChessParseError {
System.out.println("givesCheck");
Position pos = new Position();
UndoInfo ui = new UndoInfo();
pos.setPiece(TextIO.getSquare("e3"), Piece.WKING);
pos.setPiece(TextIO.getSquare("e8"), Piece.BKING);
pos.setPiece(TextIO.getSquare("c2"), Piece.WROOK);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Rc8")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Rc6")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Rc7")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Re2")));
pos.setPiece(TextIO.getSquare("c2"), Piece.EMPTY);
pos.setPiece(TextIO.getSquare("e2"), Piece.WROOK);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Kd3")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Kd4")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Ke4")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Kf2")));
pos.setPiece(TextIO.getSquare("e4"), Piece.WBISHOP);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Bd5")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Bc6")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Kd3")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Re1")));
pos = TextIO.readFEN("4k3/3p4/8/8/4B3/2K5/4R3/8 w - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Bc6")));
pos = TextIO.readFEN("4k3/8/5K2/8/6N1/8/8/8 w - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Ke6")));
assertTrue(!MoveGen.givesCheck(pos, new Move(TextIO.getSquare("f6"),
TextIO.getSquare("e7"),
Piece.EMPTY)));
pos = TextIO.readFEN("8/2k5/8/4N3/8/2K3B1/8/8 w - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Kc4")));
pos.setPiece(TextIO.getSquare("g3"), Piece.WROOK);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos.setPiece(TextIO.getSquare("g3"), Piece.WQUEEN);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos.setPiece(TextIO.getSquare("g3"), Piece.WKNIGHT);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos.setPiece(TextIO.getSquare("g3"), Piece.WPAWN);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos.setPiece(TextIO.getSquare("c3"), Piece.EMPTY);
pos.setPiece(TextIO.getSquare("g3"), Piece.WKING);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos = TextIO.readFEN("8/2k5/3p4/4N3/8/2K3B1/8/8 w - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos = TextIO.readFEN("8/2k5/8/4N3/8/6q1/2K5/8 w - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos = TextIO.readFEN("8/2k5/8/4N3/8/8/2K5/8 w - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "Nf7")));
pos = TextIO.readFEN("2nk4/3P4/8/8/3R4/8/2K5/8 w - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc8N")));
pos = TextIO.readFEN("8/2k5/2p5/1P1P4/8/2K5/8/8 w - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc6")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "d6")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "bxc6")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "b6")));
pos = TextIO.readFEN("8/8/R1PkP2R/8/8/2K5/8/8 w - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c7")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "e7")));
// Test pawn promotion
pos = TextIO.readFEN("8/1P6/2kP4/8/8/2K5/8/8 w - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "d7")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "b8Q")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "b8N")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "b8R")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "b8B")));
pos = TextIO.readFEN("8/2P1P3/2k5/8/8/2K5/8/8 w - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "e8Q")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "e8N")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "e8R")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "e8B")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c8Q")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c8N")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c8R")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c8B")));
// Test castling
pos = TextIO.readFEN("8/8/8/8/5k2/8/8/R3K2R w KQ - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O-O")));
pos = TextIO.readFEN("8/8/8/8/6k1/8/8/R3K2R w KQ - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
pos = TextIO.readFEN("8/8/8/8/3k4/8/8/R3K2R w KQ - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O-O")));
pos = TextIO.readFEN("8/8/8/8/5k2/8/5P2/R3K2R w KQ - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
pos = TextIO.readFEN("8/8/8/8/8/8/8/R3K2k w Q - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O-O")));
pos = TextIO.readFEN("8/8/8/8/8/8/8/2k1K2R w K - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
pos.setPiece(TextIO.getSquare("d1"), Piece.WKNIGHT);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
// Test en passant
pos = TextIO.readFEN("8/1kp5/8/3P4/8/8/8/4K3 b - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "c5"), ui);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc6")));
pos = TextIO.readFEN("3k4/2p5/8/3P4/8/8/3R4/4K3 b - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "c5"), ui);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc6")));
pos = TextIO.readFEN("5k2/2p5/8/3P4/8/B7/8/4K3 b - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "c5"), ui);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc6")));
pos = TextIO.readFEN("5k2/2p5/8/3P4/1P6/B7/8/4K3 b - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "c5"), ui);
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc6")));
pos = TextIO.readFEN("8/2p5/8/R2P1k2/8/8/8/4K3 b - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "c5"), ui);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "dxc6")));
// Black pawn moves
pos = TextIO.readFEN("8/2p5/8/R4k2/1K6/8/8/8 b - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c5")));
pos = TextIO.readFEN("8/2p5/8/R4k2/2K5/8/8/8 b - - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c5")));
pos = TextIO.readFEN("8/2p5/8/R4k2/3K4/8/8/8 b - - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "c5")));
// Black castling
pos = TextIO.readFEN("r3k2r/8/8/5K2/8/8/8/8 b kq - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O-O")));
pos = TextIO.readFEN("r3k2r/8/8/6K1/8/8/8/8 b kq - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O")));
pos = TextIO.readFEN("r3k2r/8/8/2K5/8/8/8/8 b kq - 0 1");
assertTrue(!MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O-O")));
pos = TextIO.readFEN("r3k2r/8/8/3K4/8/8/8/8 b kq - 0 1");
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "O-O-O")));
// Black en passant
pos = TextIO.readFEN("8/8/4k3/8/4p3/8/5PK1/8 w - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "f4"), ui);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "exf3")));
pos = TextIO.readFEN("8/8/4k3/8/K3p1r1/8/5P2/8 w - - 0 1");
pos.makeMove(TextIO.stringToMove(pos, "f4"), ui);
assertTrue(MoveGen.givesCheck(pos, TextIO.stringToMove(pos, "exf3")));
}
/**
* Test of removeIllegal method, of class MoveGen.
*/
@Test
public void testRemoveIllegal() throws ChessParseError {
System.out.println("removeIllegal");
Position pos = TextIO.readFEN("8/3k4/8/2n1rpP1/1P6/1NB5/2QP4/R3K2R w KQ f6 0 1");
List<String> strMoves = getMoveList(pos, true);
assertTrue(strMoves.contains("c2e4"));
assertTrue(strMoves.contains("c3e5"));
assertTrue(strMoves.contains("e1d1"));
assertTrue(strMoves.contains("e1f1"));
assertTrue(strMoves.contains("e1f2"));
assertEquals(5, strMoves.size());
pos = TextIO.readFEN("4k3/8/8/2KPp1r1/8/8/8/8 w - e6 0 2");
strMoves = getMoveList(pos, true);
assertTrue(!strMoves.contains("d5e6"));
assertEquals(7, strMoves.size());
pos = TextIO.readFEN("8/6p1/4p3/2k1Pp1B/4KP1p/6rP/8/8 w - f6 0 55");
strMoves = getMoveList(pos, true);
assertTrue(strMoves.contains("e5f6"));
assertEquals(1, strMoves.size());
}
/**
* Test that if king capture is possible, only a king capture move is returned in the move list.
*/
@Test
public void testKingCapture() throws ChessParseError {
System.out.println("kingCapture");
Position pos = TextIO.readFEN("8/4k3/8/8/8/8/8/4RK2 b - - 0 1");
pos.setWhiteMove(true);
List<String> strMoves = getMoveList(pos, false);
assertEquals(1, strMoves.size());
assertEquals("e1e7", strMoves.get(0));
pos.setPiece(Position.getSquare(0, 2), Piece.WBISHOP);
pos.setPiece(Position.getSquare(4, 1), Piece.WPAWN);
strMoves = getMoveList(pos, false);
assertEquals(1, strMoves.size());
assertEquals("a3e7", strMoves.get(0));
pos.setPiece(Position.getSquare(1, 3), Piece.WPAWN);
pos.setPiece(Position.getSquare(5, 5), Piece.WPAWN);
strMoves = getMoveList(pos, false);
assertEquals(1, strMoves.size());
assertEquals("f6e7", strMoves.get(0));
}
/** Test that captureList and captureAndcheckList are generated correctly. */
@Test
public void testCaptureList() throws ChessParseError {
System.out.println("captureList");
Position pos = TextIO.readFEN("rnbqkbnr/ppp2ppp/3p1p2/R7/4N3/8/PPPPQPPP/2B1KB1R w Kkq - 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("rnb1kbn1/ppp1qppp/5p2/4p3/3N3r/3P4/PPP2PPP/R1BQKB1R b KQq - 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("rnb1k1n1/ppp1qppp/5p2/b3p3/1r1N4/3P4/PPP2PPP/R1BQKB1R b KQq - 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("8/8/8/8/3k4/8/4P3/4K3 w - - 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("8/8/8/3k4/8/8/4P3/4K3 w - - 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("8/8/8/3k4/4p3/8/3KP3/8 b - - 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("3k4/r2p2K1/8/8/8/8/8/8 b - - 0 1");
getMoveList(pos, false);
}
@Test
public void testCheckEvasions() throws ChessParseError {
System.out.println("checkEvasions");
Position pos = TextIO.readFEN("n7/8/8/7k/5pP1/5K2/8/8 b - g3 0 1");
getMoveList(pos, false);
pos = TextIO.readFEN("rn1qkbnr/pppB1ppp/3p4/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 1");
getMoveList(pos, false);
// King captures must be included in check evasions
pos = TextIO.readFEN("r1bq2r1/pp3pbk/2p1p1P1/8/3P4/2PB1N2/PP3PPR/2KR4 b - - 0 1");
UndoInfo ui = new UndoInfo();
pos.makeMove(TextIO.uciStringToMove("g7h6"), ui);
getMoveList(pos, false);
List<String> evList = getCheckEvasions(pos, false);
assertTrue(evList.contains("g6h7"));
pos = TextIO.readFEN("1R6/1brk2p1/2P1p2p/p3Pp2/P7/6P1/1P4P1/2R3K1 b - - 0 1");
getMoveList(pos, false);
evList = getCheckEvasions(pos, false);
assertTrue(evList.contains("b7c6"));
}
private List<String> getMoveList(Position pos, boolean onlyLegal) {
Position swap = EvaluateTest.swapColors(pos);
List<String> swapList = getMoveList0(swap, onlyLegal);
List<String> ret = getMoveList0(pos, onlyLegal);
assertEquals(swapList.size(), ret.size());
// FIXME! Test that swapList contains swapped moves compared to ret
return ret;
}
private List<String> getMoveList0(Position pos, boolean onlyLegal) {
MoveGen moveGen = new MoveGen();
MoveGen.MoveList moves = moveGen.pseudoLegalMoves(pos);
if (onlyLegal)
MoveGen.removeIllegal(pos, moves);
ArrayList<String> strMoves = new ArrayList<String>();
for (int mi = 0; mi < moves.size; mi++) {
Move m = moves.m[mi];
String mStr = TextIO.moveToUCIString(m);
strMoves.add(mStr);
}
List<String> capList1 = getCaptureList(pos, false, onlyLegal);
assertTrue(strMoves.containsAll(capList1));
List<String> capList2 = getCaptureList(pos, true, onlyLegal);
assertTrue(strMoves.containsAll(capList2));
List<String> evList = getCheckEvasions(pos, onlyLegal);
if (evList != null)
assertTrue(strMoves.containsAll(evList));
UndoInfo ui = new UndoInfo();
for (String sm : strMoves) {
Move m = TextIO.uciStringToMove(sm);
if (m != null) {
pos.makeMove(m, ui);
boolean invalid = MoveGen.canTakeKing(pos);
pos.unMakeMove(m, ui);
if (invalid) m = null;
}
if (m == null) // Move was illegal (but pseudo-legal)
continue;
boolean qProm = false; // Promotion types considered in qsearch
switch (m.promoteTo) {
case Piece.WQUEEN: case Piece.BQUEEN:
case Piece.WKNIGHT: case Piece.BKNIGHT:
case Piece.EMPTY:
qProm = true;
break;
default:
break;
}
if (!MoveGen.canTakeKing(pos) && MoveGen.givesCheck(pos, m)) {
if (qProm)
assertTrue(capList2.contains(sm));
} else {
switch (m.promoteTo) {
case Piece.WQUEEN: case Piece.BQUEEN:
case Piece.WKNIGHT: case Piece.BKNIGHT:
assertTrue(capList1.contains(sm)); // All queen/knight promotions
assertTrue(capList2.contains(sm)); // All queen/knight promotions
break;
case Piece.EMPTY:
break;
default:
assertTrue(!capList1.contains(sm)); // No rook/bishop promotions
assertTrue(!capList2.contains(sm)); // No rook/bishop promotions
break;
}
}
if (pos.getPiece(m.to) != Piece.EMPTY) {
if (qProm) {
assertTrue(capList1.contains(sm));
assertTrue(capList2.contains(sm));
}
}
if (evList != null) {
assertTrue(evList.contains(sm));
}
}
return strMoves;
}
private List<String> getCaptureList(Position pos, boolean includeChecks, boolean onlyLegal) {
MoveGen.MoveList moves;
if (includeChecks) {
moves = new MoveGen().pseudoLegalCapturesAndChecks(pos);
} else {
moves = new MoveGen().pseudoLegalCaptures(pos);
}
if (onlyLegal)
MoveGen.removeIllegal(pos, moves);
ArrayList<String> strMoves = new ArrayList<String>();
for (int mi = 0; mi < moves.size; mi++) {
Move m = moves.m[mi];
String mStr = TextIO.moveToUCIString(m);
strMoves.add(mStr);
}
return strMoves;
}
private List<String> getCheckEvasions(Position pos, boolean onlyLegal) {
if (!MoveGen.inCheck(pos))
return null;
MoveGen.MoveList moves = new MoveGen().checkEvasions(pos);
if (onlyLegal)
MoveGen.removeIllegal(pos, moves);
ArrayList<String> strMoves = new ArrayList<String>();
for (int mi = 0; mi < moves.size; mi++) {
Move m = moves.m[mi];
String mStr = TextIO.moveToUCIString(m);
strMoves.add(mStr);
}
return strMoves;
}
}
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