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test: add vitest and fix validateFEN

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This commit is contained in:
Cozma Rares
2023-04-05 14:29:58 +03:00
parent a5c27883f7
commit a67544c2aa
5 changed files with 928 additions and 41 deletions
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server/package.json
+4 -2
View File
@@ -6,7 +6,8 @@
"scripts": {
"start": "node dist/server.js",
"dev": "nodemon src/server.ts",
"build": "tsc -p ."
"build": "tsc -p .",
"test": "vitest run"
},
"keywords": [],
"author": "",
@@ -19,6 +20,7 @@
"@types/node": "^18.15.11",
"nodemon": "^2.0.22",
"ts-node": "^10.9.1",
"typescript": "^5.0.3"
"typescript": "^5.0.3",
"vitest": "^0.29.8"
}
}
server/pnpm-lock.yaml
Generated
+689 -2
View File
@@ -7,6 +7,7 @@ specifiers:
nodemon: ^2.0.22
ts-node: ^10.9.1
typescript: ^5.0.3
vitest: ^0.29.8
dependencies:
express: 4.18.2
@@ -17,6 +18,7 @@ devDependencies:
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ts-node: 10.9.1_pj3xut33gta66wns5w7rs6cilm
typescript: 5.0.3
vitest: 0.29.8
packages:
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server/src/__test__/engine/validateFEN.test.ts
+208
View File
@@ -0,0 +1,208 @@
import { describe, expect, test } from "vitest";
import { DEFAULT_POSITION, validateFEN } from "../../chess/engine";
describe("valid FEN strings", () => {
test("starting position", () => {
expect(validateFEN(DEFAULT_POSITION)).toEqual({ ok: true });
});
test("random position 1", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - - 0 19")
).toEqual({ ok: true });
});
test("random position 2", () => {
expect(validateFEN("1k6/1pp5/p7/5B1p/PP6/6K1/4p2r/4R3 b - - 3 43")).toEqual(
{ ok: true }
);
});
test("random position 3", () => {
expect(validateFEN("8/8/2k2Q2/8/5P2/8/1p6/6K1 b - - 1 48")).toEqual({
ok: true
});
});
});
describe("invalid FEN strings", () => {
test("string doesn't contain 6 fields", () => {
expect(validateFEN("8/8/2k2Q2/8/5P2/8/1p6/6K1 b - 1 48")).toEqual({
ok: false,
error: "Invalid FEN: string must contain 6 space delimited fields"
});
});
describe("invalid board position", () => {
test("doesn't contain 8 fields/rows", () => {
expect(validateFEN("8/8/2k2Q2/8/5P2/8/1p6 b - - 1 48")).toEqual({
ok: false,
error:
"Invalid FEN: board position must contain 8 rows delimited by '/'"
});
});
test("missing white king", () => {
expect(validateFEN("8/8/2k2Q2/8/5P2/8/1p6/8 b - - 1 48")).toEqual({
ok: false,
error: "Invalid FEN: board position is missing white king"
});
});
test("missing black king", () => {
expect(validateFEN("8/8/2K2Q2/8/5P2/8/1p6/8 b - - 1 48")).toEqual({
ok: false,
error: "Invalid FEN: board position is missing black king"
});
});
test("too many white kings", () => {
expect(validateFEN("8/7K/2k2Q2/8/5P2/8/1p6/6K1 b - - 1 48")).toEqual({
ok: false,
error: "Invalid FEN: board position contains too many white kings"
});
});
test("too many black kings", () => {
expect(validateFEN("8/7k/2k2Q2/8/5P2/8/1p6/6K1 b - - 1 48")).toEqual({
ok: false,
error: "Invalid FEN: board position contains too many black kings"
});
});
test("consecutive digits", () => {
expect(validateFEN("8/62/2k2Q2/8/5P2/8/1p6/6K1 b - - 1 48")).toEqual({
ok: false,
error: "Invalid FEN: board position contains consecutive digits"
});
});
test("invalid piece", () => {
expect(
validateFEN("1k6/1Gp5/p7/5B1p/PP6/6K1/4p2r/4R3 b - - 3 43")
).toEqual({
ok: false,
error: "Invalid FEN: board position contains an invalid piece symbol: G"
});
});
test("too many squares on row", () => {
expect(
validateFEN("1k6/1pp5/1p7/5B1p/PP6/6K1/4p2r/4R3 b - - 3 43")
).toEqual({
ok: false,
error:
"Invalid FEN: board position contains a row that does not have 8 squares"
});
});
});
describe("invalid turn", () => {
test("capital W", () => {
expect(
validateFEN("1k6/1pp5/p7/5B1p/PP6/6K1/4p2r/4R3 W - - 3 43")
).toEqual({
ok: false,
error: "Invalid FEN: invalid side to move"
});
});
test("capital B", () => {
expect(
validateFEN("1k6/1pp5/p7/5B1p/PP6/6K1/4p2r/4R3 B - - 3 43")
).toEqual({
ok: false,
error: "Invalid FEN: invalid side to move"
});
});
test("invalid letter", () => {
expect(
validateFEN("1k6/1pp5/p7/5B1p/PP6/6K1/4p2r/4R3 c - - 3 43")
).toEqual({
ok: false,
error: "Invalid FEN: invalid side to move"
});
});
});
describe("invalid castling rights", () => {
test("invalid characters", () => {
expect(
validateFEN("1k6/1pp5/p7/5B1p/PP6/6K1/4p2r/4R3 b abc - 3 43")
).toEqual({
ok: false,
error: "Invalid FEN: string contains invalid castling rights"
});
});
});
describe("invalid en-passant", () => {
test("random position 1", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - e1 0 19")
).toEqual({ ok: false, error: "Invalid FEN: invalid en-passant square" });
});
test("random position 1", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 w - e3 0 19")
).toEqual({ ok: false, error: "Invalid FEN: invalid en-passant square" });
});
test("random position 1", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - e6 0 19")
).toEqual({ ok: false, error: "Invalid FEN: invalid en-passant square" });
});
});
describe("invalid half moves", () => {
test("negative number", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - - -2 19")
).toEqual({
ok: false,
error: "Invalid FEN: move number must be a non-negative integer"
});
});
test("not a number", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - - abc 19")
).toEqual({
ok: false,
error: "Invalid FEN: move number must be a non-negative integer"
});
});
});
describe("invalid full moves", () => {
test("negative number", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - - 0 -3")
).toEqual({
ok: false,
error: "Invalid FEN: number of full moves must be a positive integer"
});
});
test("zero", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - - 0 0")
).toEqual({
ok: false,
error: "Invalid FEN: number of full moves must be a positive integer"
});
});
test("not a number", () => {
expect(
validateFEN("r1b1r1k1/pp4pp/3Bpp2/8/2q5/P5Q1/3R1PPP/R5K1 b - - 0 abc")
).toEqual({
ok: false,
error: "Invalid FEN: number of full moves must be a positive integer"
});
});
});
});
server/src/chess/engine.ts
+19 -35
View File
@@ -123,7 +123,7 @@ export function file(squareIdx: number): number {
}
export function isDigit(c: string): boolean {
return /^d$/.test(c);
return /^\d$/.test(c);
}
export function algebraic(square: number): Square {
@@ -142,16 +142,14 @@ export function validateFEN(fen: string): { ok: boolean; error?: string } {
if (fields.length != 6)
return {
ok: false,
error: "FEN string must contain 6 space delimited fields"
error: "Invalid FEN: string must contain 6 space delimited fields"
};
const validatePosition = (position: string) => {
const rows = position.split("/");
if (rows.length != 8)
throw new Error(
"Invalid FEN: board position must contain 8 rows delimited by '/'"
);
throw "Invalid FEN: board position must contain 8 rows delimited by '/'";
const kings = [
{ regex: /K/g, color: "white" },
@@ -162,14 +160,10 @@ export function validateFEN(fen: string): { ok: boolean; error?: string } {
const matches = position.match(king.regex) ?? [];
if (matches.length == 0)
throw new Error(
`Invalid FEN: board position is missing ${king.color} king`
);
throw `Invalid FEN: board position is missing ${king.color} king`;
if (matches.length > 1)
throw new Error(
`Invalid FEN: board position contains too many ${king.color} kings`
);
throw `Invalid FEN: board position contains too many ${king.color} kings`;
}
rows.forEach(row => {
@@ -179,9 +173,7 @@ export function validateFEN(fen: string): { ok: boolean; error?: string } {
[...row].forEach(symbol => {
if (isDigit(symbol)) {
if (previousWasNumber)
throw new Error(
"Invalid FEN: board position contains consecutive digits"
);
throw "Invalid FEN: board position contains consecutive digits";
numSquares += parseInt(symbol);
previousWasNumber = true;
@@ -189,10 +181,10 @@ export function validateFEN(fen: string): { ok: boolean; error?: string } {
return;
}
if (PIECE_SYMBOLS.includes(symbol) == false)
throw new Error(
if (PIECE_SYMBOLS.includes(symbol.toLowerCase()) == false)
throw (
"Invalid FEN: board position contains an invalid piece symbol: " +
symbol
symbol
);
numSquares++;
@@ -200,43 +192,37 @@ export function validateFEN(fen: string): { ok: boolean; error?: string } {
});
if (numSquares != 8)
throw new Error(
"Invalid FEN: board position contains a row that does not have 8 squares"
);
throw "Invalid FEN: board position contains a row that does not have 8 squares";
});
};
const validateTurn = (turn: string) => {
if (/^(w|b)$/.test(turn) == false)
throw new Error("Invalid FEN: invalid side to move");
throw "Invalid FEN: invalid side to move";
};
const validateCastling = (castling: string) => {
if (/[^kKqQ-]/.test(castling))
throw new Error("Invalid FEN: string contains invalid castling rights");
throw "Invalid FEN: string contains invalid castling rights";
};
const validateEnPassant = (enPassant: string, turn: string) => {
if (!/^(-|[abcdefgh][36])$/.test(enPassant))
throw new Error("Invalid FEN: invalid en-passant square");
throw "Invalid FEN: invalid en-passant square";
if (turn == "w" && enPassant[1] == "3")
throw new Error("Invalid FEN: invalid en-passant square");
throw "Invalid FEN: invalid en-passant square";
if (turn == "b" && enPassant[1] == "6")
throw new Error("Invalid FEN: invalid en-passant square");
throw "Invalid FEN: invalid en-passant square";
};
const validateHalfMoves = (halfMoves: string) => {
if (/^\d+$/.test(halfMoves) == false)
throw new Error(
"Invalid FEN: move number must be a non-negative integer"
);
throw "Invalid FEN: move number must be a non-negative integer";
};
const validateFullMoves = (fullMoves: string) => {
if (/^[1-9]\d+$/.test(fullMoves) == false)
throw new Error(
"Invalid FEN: number of full moves must be a positive integer"
);
if (/^[1-9]\d*$/.test(fullMoves) == false)
throw "Invalid FEN: number of full moves must be a positive integer";
};
try {
@@ -247,14 +233,12 @@ export function validateFEN(fen: string): { ok: boolean; error?: string } {
validateFullMoves(fields[5]);
validatePosition(fields[0]);
} catch (e) {
return { ok: false, error: e as string };
return { ok: false, error: `${e}` };
}
return { ok: true };
}
console.log(validateFEN(""));
export class Chess {
private _board: (Piece | null)[] = [];
private _turn: Color = COLOR.WHITE;
server/tsconfig.json
+8 -2
View File
@@ -26,7 +26,7 @@
/* Modules */
"module": "commonjs", /* Specify what module code is generated. */
"rootDir": "./src", /* Specify the root folder within your source files. */
// "rootDir": "", /* Specify the root folder within your source files. */
"moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */
// "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */
// "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */
@@ -99,5 +99,11 @@
/* Completeness */
// "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */
"skipLibCheck": true /* Skip type checking all .d.ts files. */
}
},
"exclude": [
"src/__test__/"
],
"include": [
"src/"
]
}