83499850fb
Lock-file determinism guarantees re-bakes do not renumber existing tiles. Atlas_id mismatch is a hard-fail to prevent silent corruption. Deleted tile IDs move to deleted[] and are not recycled. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
76 lines
2.5 KiB
JavaScript
76 lines
2.5 KiB
JavaScript
const { test } = require('node:test');
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const assert = require('node:assert');
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const path = require('node:path');
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const { loadLock, assignIds, serializeLock } = require('../src/lock');
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const EXISTING_LOCK = path.resolve(__dirname, 'fixtures/lock-existing.json');
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test('lock: load existing', () => {
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const lock = loadLock(EXISTING_LOCK);
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assert.strictEqual(lock.atlas_id, 'small_demo');
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assert.strictEqual(lock.bindings.grass, 1);
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assert.strictEqual(lock.bindings.stone, 2);
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assert.strictEqual(lock.next_id, 3);
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});
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test('lock: load nonexistent returns null', () => {
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const lock = loadLock('/nonexistent/path.json');
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assert.strictEqual(lock, null);
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});
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test('lock: assign IDs to fresh sources', () => {
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const sources = [
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{ name: 'apple' },
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{ name: 'banana' },
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{ name: 'cherry' },
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];
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const { tiles, lock } = assignIds(sources, null, 'fresh_atlas');
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assert.strictEqual(tiles[0].id, 1);
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assert.strictEqual(tiles[1].id, 2);
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assert.strictEqual(tiles[2].id, 3);
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assert.strictEqual(lock.atlas_id, 'fresh_atlas');
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assert.strictEqual(lock.next_id, 4);
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assert.deepStrictEqual(lock.deleted, []);
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});
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test('lock: preserve existing bindings on re-bake', () => {
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const existing = loadLock(EXISTING_LOCK);
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const sources = [
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{ name: 'grass' },
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{ name: 'stone' },
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{ name: 'water' }, // new
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];
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const { tiles, lock } = assignIds(sources, existing, 'small_demo');
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const idByName = Object.fromEntries(tiles.map(t => [t.name, t.id]));
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assert.strictEqual(idByName.grass, 1); // preserved
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assert.strictEqual(idByName.stone, 2); // preserved
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assert.strictEqual(idByName.water, 3); // new
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assert.strictEqual(lock.next_id, 4);
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});
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test('lock: deleted tiles move to deleted[]', () => {
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const existing = loadLock(EXISTING_LOCK);
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const sources = [
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{ name: 'grass' },
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// stone removed
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];
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const { lock } = assignIds(sources, existing, 'small_demo');
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assert.deepStrictEqual(lock.deleted, [2]);
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assert.strictEqual(lock.bindings.stone, undefined);
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assert.strictEqual(lock.bindings.grass, 1);
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});
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test('lock: atlas_id mismatch -> error', () => {
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const existing = loadLock(EXISTING_LOCK);
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assert.throws(
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() => assignIds([{ name: 'grass' }], existing, 'WRONG_ID'),
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/atlas_id mismatch/,
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);
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});
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test('lock: serialize is JSON with 2-space indent', () => {
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const lock = { atlas_id: 'x', bindings: { a: 1 }, deleted: [], next_id: 2 };
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const s = serializeLock(lock);
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assert.ok(s.includes(' "atlas_id"'));
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});
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