airkjw
0210c14858
PCG32 seeded RNG; immutable 8x8 GridState with occupancy bitmask; placement legality + anyPlacementExists; simultaneous row/col clears with single-count gem credit; combo scoring with one-move grace; weighted-bag generator with pity bias and depth-3 solvability nudge. All TDD, 51 tests green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
68 lines
2.3 KiB
Dart
68 lines
2.3 KiB
Dart
import 'package:block_seasons/game/models/cell.dart';
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import 'package:block_seasons/game/models/grid.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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group('GridState', () {
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test('empty grid has no occupied cells', () {
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final grid = GridState.empty();
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expect(grid.occupiedCount, 0);
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expect(grid.fillRatio, 0.0);
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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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expect(grid.cellAt(x, y).type, CellType.empty);
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expect(grid.isOccupied(x, y), isFalse);
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}
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}
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});
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test('withCell returns a new grid and leaves the original unchanged', () {
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final grid = GridState.empty();
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final next = grid.withCell(3, 4, const Cell(CellType.filled, colorId: 2));
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expect(grid.isOccupied(3, 4), isFalse);
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expect(next.isOccupied(3, 4), isTrue);
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expect(next.cellAt(3, 4).type, CellType.filled);
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expect(next.cellAt(3, 4).colorId, 2);
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expect(next.occupiedCount, 1);
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});
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test('gem cells count as occupied', () {
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final grid =
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GridState.empty().withCell(0, 0, const Cell(CellType.gem));
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expect(grid.isOccupied(0, 0), isTrue);
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expect(grid.occupiedCount, 1);
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});
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test('clearing a cell back to empty updates occupancy', () {
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final grid = GridState.empty()
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.withCell(5, 5, const Cell(CellType.filled, colorId: 1))
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.withCell(5, 5, const Cell(CellType.empty));
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expect(grid.isOccupied(5, 5), isFalse);
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expect(grid.occupiedCount, 0);
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});
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test('isRowFull and isColFull detect complete lines', () {
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var grid = GridState.empty();
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for (var x = 0; x < GridState.size; x++) {
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grid = grid.withCell(x, 2, const Cell(CellType.filled, colorId: 0));
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}
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for (var y = 0; y < GridState.size; y++) {
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grid = grid.withCell(6, y, const Cell(CellType.filled, colorId: 0));
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}
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expect(grid.isRowFull(2), isTrue);
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expect(grid.isRowFull(3), isFalse);
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expect(grid.isColFull(6), isTrue);
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expect(grid.isColFull(0), isFalse);
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});
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test('fillRatio reflects occupied fraction', () {
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var grid = GridState.empty();
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for (var x = 0; x < GridState.size; x++) {
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grid = grid.withCell(x, 0, const Cell(CellType.filled, colorId: 0));
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}
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expect(grid.fillRatio, closeTo(8 / 64, 1e-9));
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});
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});
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}
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