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Pure Funktion diffManifest(current, cached) → {toAdd, toRemove}.
Vom SW beim Update-Sync genutzt: neue Rezept-IDs nachladen,
gelöschte aus dem Cache räumen. 5 Tests decken add/remove/
beides/unchanged/empty-cache ab.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { diffManifest } from '../../src/lib/sw/diff-manifest';
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describe('diffManifest', () => {
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it('detects new IDs to add', () => {
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const result = diffManifest([1, 2, 3, 4], [1, 2]);
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expect(result.toAdd.sort()).toEqual([3, 4]);
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expect(result.toRemove).toEqual([]);
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});
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it('detects removed IDs', () => {
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const result = diffManifest([1, 2], [1, 2, 3, 4]);
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expect(result.toAdd).toEqual([]);
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expect(result.toRemove.sort()).toEqual([3, 4]);
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});
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it('detects both add and remove in one diff', () => {
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const result = diffManifest([1, 3, 5], [1, 2, 3]);
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expect(result.toAdd).toEqual([5]);
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expect(result.toRemove).toEqual([2]);
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});
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it('returns empty arrays when identical', () => {
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const result = diffManifest([1, 2, 3], [3, 2, 1]);
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expect(result.toAdd).toEqual([]);
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expect(result.toRemove).toEqual([]);
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});
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it('handles empty caches (first sync)', () => {
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const result = diffManifest([1, 2], []);
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expect(result.toAdd.sort()).toEqual([1, 2]);
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expect(result.toRemove).toEqual([]);
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});
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});
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