0c95797242
Pure function returning /api/documents/{id}/thumbnail?v=<timestamp>
or null when thumbnailKey is missing. The encoded timestamp changes
whenever the backend regenerates a thumbnail (file replace),
invalidating browser caches despite the immutable Cache-Control.
Refs #307
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
38 lines
1.1 KiB
TypeScript
38 lines
1.1 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import { thumbnailUrl } from './thumbnails';
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describe('thumbnailUrl', () => {
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it('returns null when thumbnailKey is undefined', () => {
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expect(thumbnailUrl({ id: 'abc' })).toBeNull();
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});
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it('returns url without version param when thumbnailKey present but generatedAt missing', () => {
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expect(thumbnailUrl({ id: 'abc', thumbnailKey: 'thumbnails/abc.jpg' })).toBe(
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'/api/documents/abc/thumbnail'
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);
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});
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it('appends encoded cache-bust param when generatedAt present', () => {
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const url = thumbnailUrl({
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id: 'abc',
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thumbnailKey: 'thumbnails/abc.jpg',
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thumbnailGeneratedAt: '2026-04-22T20:41:15.123456'
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});
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expect(url).toBe('/api/documents/abc/thumbnail?v=2026-04-22T20%3A41%3A15.123456');
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});
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it('different generatedAt produces different URL — enables cache-bust on file replace', () => {
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const a = thumbnailUrl({
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id: 'x',
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thumbnailKey: 'thumbnails/x.jpg',
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thumbnailGeneratedAt: '2026-01-01T10:00:00'
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});
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const b = thumbnailUrl({
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id: 'x',
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thumbnailKey: 'thumbnails/x.jpg',
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thumbnailGeneratedAt: '2026-01-01T11:00:00'
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});
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expect(a).not.toBe(b);
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});
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});
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