claude (blind_chess)
83 lines
2.8 KiB
TypeScript
83 lines
2.8 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { Chess } from 'chess.js';
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import { buildView, ownSquares } from '../../src/view.js';
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import type { Game } from '../../src/state.js';
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import { RATE_LIMIT } from '../../src/state.js';
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function makeGame(mode: 'blind' | 'vanilla', fen?: string, status: 'active' | 'finished' = 'active'): Game {
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return {
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id: 'testtest',
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mode,
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highlightingEnabled: false,
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status,
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createdAt: Date.now(),
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chess: fen ? new Chess(fen) : new Chess(),
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moveHistory: [],
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announcements: [],
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players: {
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w: { token: 'w'.repeat(24), socket: null, joinedAt: 0, rateBucket: { tokens: RATE_LIMIT.capacity, last: 0 } },
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b: { token: 'b'.repeat(24), socket: null, joinedAt: 0, rateBucket: { tokens: RATE_LIMIT.capacity, last: 0 } },
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},
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armed: null,
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drawOffer: null,
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disconnectAt: {},
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lastBroadcastIdx: { w: 0, b: 0 },
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};
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}
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describe('buildView: security boundary', () => {
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it('blind/active white view contains zero black pieces', () => {
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const g = makeGame('blind');
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const view = buildView(g, 'w');
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for (const piece of Object.values(view.pieces)) {
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expect(piece?.color).toBe('w');
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}
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expect(Object.keys(view.pieces).length).toBe(16); // all 16 white pieces
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});
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it('blind/active black view contains zero white pieces', () => {
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const g = makeGame('blind');
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const view = buildView(g, 'b');
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for (const piece of Object.values(view.pieces)) {
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expect(piece?.color).toBe('b');
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}
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expect(Object.keys(view.pieces).length).toBe(16);
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});
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it('vanilla/active shows both colors', () => {
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const g = makeGame('vanilla');
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const view = buildView(g, 'w');
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expect(Object.keys(view.pieces).length).toBe(32);
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});
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it('blind/finished reveals both colors (post-game review)', () => {
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const g = makeGame('blind', undefined, 'finished');
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const view = buildView(g, 'w');
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expect(Object.keys(view.pieces).length).toBe(32);
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});
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it('blind: inCheck is null for non-actor (info leak prevention)', () => {
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// Black to move and is in check. White's view says null (it's not white's turn,
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// and revealing inCheck-status of opponent leaks info).
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const g = makeGame('blind', 'rnb1kbnr/pppp1ppp/8/4p3/6Pq/5P2/PPPPP2P/RNBQKBNR w KQkq - 1 3');
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const view = buildView(g, 'b');
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// It's white's turn here. Black viewer is not the to-move side.
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expect(view.inCheck).toBeNull();
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});
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});
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describe('ownSquares', () => {
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it('starting position returns 16 own squares', () => {
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const g = makeGame('blind');
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expect(ownSquares(g, 'w').size).toBe(16);
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expect(ownSquares(g, 'b').size).toBe(16);
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});
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it('contains only own-color squares', () => {
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const g = makeGame('blind');
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const wSet = ownSquares(g, 'w');
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expect(wSet.has('e2')).toBe(true);
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expect(wSet.has('e7')).toBe(false);
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});
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});
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