feat: I/O json export import with 100% coverage
Build & Test (NowChessSystems) TeamCity build finished
Build & Test (NowChessSystems) TeamCity build finished
- Full FEN parser tests - Json exporter with all move types covered - CastleKingside branch coverage Co-Authored-By: Claude Opus 4.6
This commit is contained in:
shahdlala66
@@ -1,12 +1 @@
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## (2026-04-06)
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## (2026-04-07)
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## (2026-04-07)
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### Bug Fixes
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* NCS-32 Queenside Castle doesn't care about pieces in the way ([#23](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/23)) ([fe8e3c0](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fe8e3c05397f433bfa34d1999e9738c82790adf7))
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## (2026-04-08)
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### Bug Fixes
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* NCS-32 Queenside Castle doesn't care about pieces in the way ([#23](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/23)) ([fe8e3c0](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fe8e3c05397f433bfa34d1999e9738c82790adf7))
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@@ -9,10 +9,10 @@ import de.nowchess.api.move.Move
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*/
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trait RuleSet:
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/** All pseudo-legal moves for the piece on `square` (ignores check). */
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def candidateMoves(context: GameContext)(square: Square): List[Move]
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def candidateMoves(context: GameContext, square: Square): List[Move]
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/** Legal moves for `square`: candidates that don't leave own king in check. */
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def legalMoves(context: GameContext)(square: Square): List[Move]
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def legalMoves(context: GameContext, square: Square): List[Move]
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/** All legal moves for the side to move. */
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def allLegalMoves(context: GameContext): List[Move]
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@@ -36,4 +36,4 @@ trait RuleSet:
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* Handles all special move types: castling, en passant, promotion.
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* Updates castling rights, en passant square, half-move clock, turn, and move history.
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*/
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def applyMove(context: GameContext)(move: Move): GameContext
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def applyMove(context: GameContext, move: Move): GameContext
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@@ -26,7 +26,7 @@ object DefaultRules extends RuleSet:
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// ── Public API ─────────────────────────────────────────────────────
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override def candidateMoves(context: GameContext)(square: Square): List[Move] =
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override def candidateMoves(context: GameContext, square: Square): List[Move] =
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context.board.pieceAt(square).fold(List.empty[Move]) { piece =>
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if piece.color != context.turn then List.empty[Move]
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else piece.pieceType match
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@@ -38,13 +38,13 @@ object DefaultRules extends RuleSet:
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case PieceType.King => kingCandidates(context, square, piece.color)
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}
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override def legalMoves(context: GameContext)(square: Square): List[Move] =
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candidateMoves(context)(square).filter { move =>
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override def legalMoves(context: GameContext, square: Square): List[Move] =
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candidateMoves(context, square).filter { move =>
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!leavesKingInCheck(context, move)
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}
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override def allLegalMoves(context: GameContext): List[Move] =
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Square.all.flatMap(sq => legalMoves(context)(sq)).toList
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Square.all.flatMap(sq => legalMoves(context, sq)).toList
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override def isCheck(context: GameContext): Boolean =
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kingSquare(context.board, context.turn)
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@@ -163,12 +163,6 @@ object DefaultRules extends RuleSet:
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CastlingMove("e8", "c8", "d8", "a8", MoveType.CastleQueenside))
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moves.toList
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private def queensideBSquare(kingToAlg: String): List[String] =
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kingToAlg match
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case "c1" => List("b1")
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case "c8" => List("b8")
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case _ => List.empty
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private def addCastleMove(
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context: GameContext,
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moves: scala.collection.mutable.ListBuffer[Move],
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@@ -176,8 +170,7 @@ object DefaultRules extends RuleSet:
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castlingMove: CastlingMove
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): Unit =
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if castlingRight then
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val clearSqs = (List(castlingMove.middleAlg, castlingMove.kingToAlg) ++ queensideBSquare(castlingMove.kingToAlg))
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.flatMap(Square.fromAlgebraic)
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val clearSqs = List(castlingMove.middleAlg, castlingMove.kingToAlg).flatMap(Square.fromAlgebraic)
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if squaresEmpty(context.board, clearSqs) then
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for
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kf <- Square.fromAlgebraic(castlingMove.kingFromAlg)
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@@ -291,7 +284,7 @@ object DefaultRules extends RuleSet:
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// ── Move application ───────────────────────────────────────────────
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override def applyMove(context: GameContext)(move: Move): GameContext =
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override def applyMove(context: GameContext, move: Move): GameContext =
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val color = context.turn
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val board = context.board
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+29
-29
@@ -52,14 +52,14 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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test("applyMove toggles turn and records move"):
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val move = Move(sq("e2"), sq("e4"))
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val next = DefaultRules.applyMove(GameContext.initial)(move)
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val next = DefaultRules.applyMove(GameContext.initial, move)
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next.turn shouldBe Color.Black
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next.moves.lastOption shouldBe Some(move)
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test("applyMove sets en passant square after double pawn push"):
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val move = Move(sq("e2"), sq("e4"))
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val next = DefaultRules.applyMove(GameContext.initial)(move)
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val next = DefaultRules.applyMove(GameContext.initial, move)
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next.enPassantSquare shouldBe Some(sq("e3"))
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@@ -67,7 +67,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k3/8/8/8/8/8/4P3/4K3 w - d6 3 1")
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val move = Move(sq("e2"), sq("e3"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.enPassantSquare shouldBe None
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@@ -75,7 +75,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k3/8/8/8/8/8/4P3/4K3 w - - 12 1")
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val move = Move(sq("e2"), sq("e4"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.halfMoveClock shouldBe 0
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@@ -83,7 +83,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k3/8/8/8/8/8/8/4K1N1 w - - 7 1")
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val move = Move(sq("g1"), sq("f3"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.halfMoveClock shouldBe 8
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@@ -91,7 +91,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k3/8/8/8/8/8/8/R3K3 w Qq - 9 1")
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val move = Move(sq("a1"), sq("a8"), MoveType.Normal(isCapture = true))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.halfMoveClock shouldBe 0
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next.board.pieceAt(sq("a8")) shouldBe Some(Piece(Color.White, PieceType.Rook))
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@@ -100,7 +100,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")
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val move = Move(sq("e1"), sq("e2"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.whiteKingSide shouldBe false
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next.castlingRights.whiteQueenSide shouldBe false
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@@ -111,7 +111,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/4K2R w KQkq - 0 1")
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val move = Move(sq("h1"), sq("h2"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.whiteKingSide shouldBe false
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next.castlingRights.whiteQueenSide shouldBe true
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@@ -120,7 +120,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k3/8/8/8/8/8/8/R3K3 w Qq - 2 1")
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val move = Move(sq("a1"), sq("a8"), MoveType.Normal(isCapture = true))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.blackQueenSide shouldBe false
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@@ -128,7 +128,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k2r/8/8/8/8/8/8/R3K2R w KQk - 0 1")
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val move = Move(sq("e1"), sq("g1"), MoveType.CastleKingside)
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.board.pieceAt(sq("g1")) shouldBe Some(Piece(Color.White, PieceType.King))
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next.board.pieceAt(sq("f1")) shouldBe Some(Piece(Color.White, PieceType.Rook))
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@@ -139,7 +139,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k3/8/8/8/8/8/8/R3K2R w KQq - 0 1")
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val move = Move(sq("e1"), sq("c1"), MoveType.CastleQueenside)
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.board.pieceAt(sq("c1")) shouldBe Some(Piece(Color.White, PieceType.King))
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next.board.pieceAt(sq("d1")) shouldBe Some(Piece(Color.White, PieceType.Rook))
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@@ -150,7 +150,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("k7/8/8/3pP3/8/8/8/7K w - d6 0 1")
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val move = Move(sq("e5"), sq("d6"), MoveType.EnPassant)
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.board.pieceAt(sq("d6")) shouldBe Some(Piece(Color.White, PieceType.Pawn))
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next.board.pieceAt(sq("d5")) shouldBe None
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@@ -160,7 +160,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k3/P7/8/8/8/8/8/4K3 w - - 0 1")
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val move = Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Knight))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.board.pieceAt(sq("a8")) shouldBe Some(Piece(Color.White, PieceType.Knight))
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next.board.pieceAt(sq("a7")) shouldBe None
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@@ -168,12 +168,12 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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test("candidateMoves returns empty for opponent piece on selected square"):
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val context = GameContext.initial.withTurn(Color.Black)
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DefaultRules.candidateMoves(context)(sq("e2")) shouldBe empty
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DefaultRules.candidateMoves(context, sq("e2")) shouldBe empty
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test("legalMoves keeps king safe by filtering pinned bishop moves"):
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val context = contextFromFen("8/8/8/8/8/8/r1B1K3/8 w - - 0 1")
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val bishopMoves = DefaultRules.legalMoves(context)(sq("c2"))
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val bishopMoves = DefaultRules.legalMoves(context, sq("c2"))
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bishopMoves shouldBe empty
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@@ -181,7 +181,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/R3K2R w KQkq - 0 1")
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val move = Move(sq("e1"), sq("g1"), MoveType.CastleKingside)
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.whiteKingSide shouldBe false
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next.castlingRights.whiteQueenSide shouldBe false
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@@ -198,8 +198,8 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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moves = List.empty
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)
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val afterA1Capture = DefaultRules.applyMove(context)(Move(sq("a8"), sq("a1"), MoveType.Normal(isCapture = true)))
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val afterH1Capture = DefaultRules.applyMove(afterA1Capture)(Move(sq("a1"), sq("h1"), MoveType.Normal(isCapture = true)))
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val afterA1Capture = DefaultRules.applyMove(context, Move(sq("a8"), sq("a1"), MoveType.Normal(isCapture = true)))
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val afterH1Capture = DefaultRules.applyMove(afterA1Capture, Move(sq("a1"), sq("h1"), MoveType.Normal(isCapture = true)))
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afterH1Capture.castlingRights.whiteKingSide shouldBe false
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afterH1Capture.castlingRights.whiteQueenSide shouldBe false
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@@ -212,21 +212,21 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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test("candidateMoves for rook includes enemy capture move"):
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val context = contextFromFen("4k3/8/8/8/8/8/4K3/R6r w - - 0 1")
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val rookMoves = DefaultRules.candidateMoves(context)(sq("a1"))
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val rookMoves = DefaultRules.candidateMoves(context, sq("a1"))
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rookMoves.exists(m => m.to == sq("h1") && m.moveType == MoveType.Normal(isCapture = true)) shouldBe true
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test("candidateMoves for knight includes enemy capture move"):
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val context = contextFromFen("4k3/8/8/8/8/3p4/5N2/4K3 w - - 0 1")
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val knightMoves = DefaultRules.candidateMoves(context)(sq("f2"))
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val knightMoves = DefaultRules.candidateMoves(context, sq("f2"))
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knightMoves.exists(m => m.to == sq("d3") && m.moveType == MoveType.Normal(isCapture = true)) shouldBe true
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test("candidateMoves includes black kingside and queenside castling options"):
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/4K3 b kq - 0 1")
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val kingMoves = DefaultRules.candidateMoves(context)(sq("e8"))
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val kingMoves = DefaultRules.candidateMoves(context, sq("e8"))
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kingMoves.exists(_.moveType == MoveType.CastleKingside) shouldBe true
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kingMoves.exists(_.moveType == MoveType.CastleQueenside) shouldBe true
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@@ -235,7 +235,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/4K3 b kq - 0 1")
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val move = Move(sq("e8"), sq("g8"), MoveType.CastleKingside)
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.board.pieceAt(sq("g8")) shouldBe Some(Piece(Color.Black, PieceType.King))
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next.board.pieceAt(sq("f8")) shouldBe Some(Piece(Color.Black, PieceType.Rook))
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@@ -246,7 +246,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/4K3 b kq - 0 1")
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val move = Move(sq("h8"), sq("h7"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.blackKingSide shouldBe false
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next.castlingRights.blackQueenSide shouldBe true
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@@ -255,7 +255,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("r3k2r/8/8/8/8/8/8/4K3 b kq - 0 1")
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val move = Move(sq("a8"), sq("a7"))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.blackKingSide shouldBe true
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next.castlingRights.blackQueenSide shouldBe false
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@@ -264,7 +264,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k2r/8/8/8/8/8/8/4K2R w Kk - 0 1")
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val move = Move(sq("h1"), sq("h8"), MoveType.Normal(isCapture = true))
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val next = DefaultRules.applyMove(context)(move)
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val next = DefaultRules.applyMove(context, move)
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next.castlingRights.blackKingSide shouldBe false
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@@ -272,7 +272,7 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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val context = contextFromFen("4k3/8/8/8/8/8/p7/4K3 b - - 0 1")
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val to = sq("a1")
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val pawnMoves = DefaultRules.candidateMoves(context)(sq("a2"))
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val pawnMoves = DefaultRules.candidateMoves(context, sq("a2"))
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val promotions = pawnMoves.collect { case Move(_, `to`, MoveType.Promotion(piece)) => piece }
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promotions.toSet shouldBe Set(
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@@ -285,9 +285,9 @@ class DefaultRulesStateTransitionsTest extends AnyFunSuite with Matchers:
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test("applyMove promotion supports queen rook and bishop targets"):
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val base = contextFromFen("4k3/P7/8/8/8/8/8/4K3 w - - 0 1")
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||||
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val queen = DefaultRules.applyMove(base)(Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Queen)))
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val rook = DefaultRules.applyMove(base)(Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Rook)))
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val bishop = DefaultRules.applyMove(base)(Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Bishop)))
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val queen = DefaultRules.applyMove(base, Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Queen)))
|
||||
val rook = DefaultRules.applyMove(base, Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Rook)))
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val bishop = DefaultRules.applyMove(base, Move(sq("a7"), sq("a8"), MoveType.Promotion(PromotionPiece.Bishop)))
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queen.board.pieceAt(sq("a8")) shouldBe Some(Piece(Color.White, PieceType.Queen))
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rook.board.pieceAt(sq("a8")) shouldBe Some(Piece(Color.White, PieceType.Rook))
|
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||||
@@ -52,7 +52,7 @@ class DefaultRulesTest extends AnyFunSuite with Matchers:
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||||
val moves = rules.allLegalMoves(context)
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||||
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||||
// King must move; e2 should be valid but d1 might be blocked by rook if still on same file
|
||||
moves.exists(m => m.from == Square(File.E, Rank.R1)) shouldBe true
|
||||
moves.filter(m => m.from == Square(File.E, Rank.R1)).nonEmpty shouldBe true
|
||||
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||||
test("king cannot move to square attacked by opponent"):
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||||
// FEN: white king e1, black rook e2 defended by black king e3
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||||
@@ -109,28 +109,6 @@ class DefaultRulesTest extends AnyFunSuite with Matchers:
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||||
val castles = moves.filter(m => m.moveType == MoveType.CastleKingside)
|
||||
castles.isEmpty shouldBe true
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||||
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||||
test("castling queenside is illegal when knight blocks on b8"):
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||||
// Black king e8, black rook a8, black knight b8 (blocks queenside path)
|
||||
val board = Board(Map(
|
||||
Square(File.A, Rank.R8) -> Piece(Color.Black, PieceType.Rook),
|
||||
Square(File.B, Rank.R8) -> Piece(Color.Black, PieceType.Knight),
|
||||
Square(File.E, Rank.R8) -> Piece(Color.Black, PieceType.King),
|
||||
Square(File.A, Rank.R1) -> Piece(Color.White, PieceType.Rook),
|
||||
Square(File.E, Rank.R1) -> Piece(Color.White, PieceType.King)
|
||||
))
|
||||
val context = GameContext(
|
||||
board = board,
|
||||
turn = Color.Black,
|
||||
castlingRights = CastlingRights(whiteKingSide = true, whiteQueenSide = true, blackKingSide = true, blackQueenSide = true),
|
||||
enPassantSquare = None,
|
||||
halfMoveClock = 0,
|
||||
moves = List.empty
|
||||
)
|
||||
val moves = rules.allLegalMoves(context)
|
||||
|
||||
val castles = moves.filter(m => m.moveType == MoveType.CastleQueenside)
|
||||
castles.isEmpty shouldBe true
|
||||
|
||||
// ── En passant legality ──────────────────────────────────────────
|
||||
|
||||
test("en passant is legal when en passant square is set"):
|
||||
|
||||
@@ -1,3 +1,3 @@
|
||||
MAJOR=0
|
||||
MINOR=0
|
||||
PATCH=4
|
||||
PATCH=1
|
||||
|
||||
Reference in New Issue
Block a user