airkjw
62cbb4b16a
Sealed Objective types (clearGems/reachScore/clearLines) with JSON round-trip; StageConfig with preset cells and star thresholds; GameEngine orchestrating placement -> clear -> scoring -> objectives with stuck detection, one-shot rescue (continue / +5 moves), and deterministic per-attempt RNG. 100-game headless stress test and pure-Dart architecture guard. 76 tests green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
64 lines
2.3 KiB
Dart
64 lines
2.3 KiB
Dart
import 'package:block_seasons/core/rng.dart';
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import 'package:block_seasons/game/engine/game_engine.dart';
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import 'package:block_seasons/game/models/grid.dart';
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import 'package:block_seasons/game/models/stage.dart';
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import 'package:flutter_test/flutter_test.dart';
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StageConfig _endlessStage(int seed) => StageConfig.fromJson({
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'id': 'stress_$seed',
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'seed': seed,
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'moveLimit': 40,
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'preset': const <Map<String, dynamic>>[],
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'objectives': [
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{'type': 'reachScore', 'target': 99999999},
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],
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'stars': {
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'two': {'movesLeft': 5},
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'three': {'movesLeft': 10},
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},
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'generatorProfile': 'mid',
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});
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void main() {
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test('100 seeded random games run to a terminal state without violations',
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() {
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for (var seed = 0; seed < 100; seed++) {
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final engine = GameEngine(_endlessStage(seed));
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final rng = SeededRng(seed * 7919 + 1);
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var guard = 0;
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while (engine.phase == GamePhase.playing) {
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guard++;
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expect(guard, lessThan(300), reason: 'seed $seed: game never ended');
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// Enumerate all legal moves; the engine promises at least one exists
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// while phase == playing.
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final moves = <(int, int, int)>[];
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for (var i = 0; i < engine.tray.length; i++) {
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for (var y = 0; y < GridState.size; y++) {
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for (var x = 0; x < GridState.size; x++) {
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if (engine.tryPlaceWouldSucceed(i, x, y)) moves.add((i, x, y));
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}
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}
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}
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expect(moves, isNotEmpty,
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reason: 'seed $seed: playing phase but no legal move');
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final (i, x, y) = moves[rng.nextInt(moves.length)];
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final result = engine.tryPlace(i, x, y);
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expect(result, isNotNull, reason: 'seed $seed: legal move rejected');
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// Invariants after every move.
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expect(engine.tray.length, inInclusiveRange(1, 3),
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reason: 'seed $seed');
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expect(engine.movesUsed, lessThanOrEqualTo(40), reason: 'seed $seed');
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expect(engine.score, greaterThanOrEqualTo(0), reason: 'seed $seed');
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}
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// The score objective is unreachable, so every game ends stuck.
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expect(engine.phase, GamePhase.stuck, reason: 'seed $seed');
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expect(engine.stuckReason, isNotNull, reason: 'seed $seed');
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}
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});
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}
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