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scrabble-game/ui/src/lib/localgame/ruleset.parity.test.ts
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Ilia Denisov 32298595f2
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feat(offline): local game source (Phase B3.1)
A GatewayClient-shaped facade over the offline engine, so the same game screen can drive
a local vs_ai game with no backend (the wiring into Game.svelte is B3.2).

- source.ts: LocalSource implements the game-loop subset (GameLoopSource) for a local game
  id — gameState/gameHistory via replay, submitPlay/pass/exchange/resign apply the human
  move then run the robot (decide(generateMoves)) synchronously, persisting both and
  delivering the robot's move through a per-game event emitter (no live stream). hint is
  gated to >30 min since the robot's last move; evaluate/checkWord are local. It translates
  the UI's glyph space to the engine's index space with the static letters table.
- ruleset.ts: add the static per-variant letters (glyphs), pinned to the Go alphabet —
  offline is now fully self-contained (no reliance on a warm server alphabet cache).
- engine.ts: submitPlay (infers the direction like the server SubmitPlay), evaluatePlay +
  dictionaryHas for the move preview / word check, and record the main-word coordinate +
  the words on a play (for the history MoveRecord).
- source.test.ts: create -> human pass -> synchronous robot reply via the event, the hint
  gate, decoded history, and a whole game driven to completion.

Pure additive library code; no runtime behavior change (bundle unchanged).
2026-07-06 09:07:40 +02:00

40 lines
1.2 KiB
TypeScript

import { describe, it, expect } from 'vitest';
import { readFileSync } from 'node:fs';
import { RULESETS } from './ruleset';
import type { Variant } from '../model';
// The offline engine is self-contained: it carries each variant's tile values, bag counts and
// blank count in ruleset.ts (these are not otherwise on the client — online scoring uses the
// server-sent alphabet). This pins that hand-copied table to the Go rulesets
// (scrabble-solver/rules), whose values the movegen tool dumps to testdata/rulesets.json.
interface RulesetFix {
size: number;
rackSize: number;
bingo: number;
blanks: number;
values: number[];
counts: number[];
letters: string[];
}
const fx = JSON.parse(
readFileSync(new URL('./testdata/rulesets.json', import.meta.url), 'utf8'),
) as Record<Variant, RulesetFix>;
describe('offline ruleset table parity vs Go rules', () => {
for (const variant of Object.keys(fx) as Variant[]) {
it(variant, () => {
const rs = RULESETS[variant];
expect({
size: rs.size,
rackSize: rs.rackSize,
bingo: rs.bingo,
blanks: rs.blanks,
values: [...rs.values],
counts: [...rs.counts],
letters: [...rs.letters],
}).toEqual(fx[variant]);
});
}
});