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79ed62f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 | /// <reference types="node" />
import { describe, it, expect, beforeEach, vi } from 'vitest';
import { http, HttpResponse } from 'msw';
import { server } from '../../helpers/msw/server';
import { getAuthUrl, fetchImageAsBlob, clearImageQueue } from '../../../src/api/authUrl';
// Flush microtasks + a macro-task so async handlers finish
const flushPromises = () => new Promise<void>(r => setTimeout(r, 10));
beforeEach(() => {
clearImageQueue();
vi.restoreAllMocks();
vi.unstubAllGlobals();
});
// ── getAuthUrl ─────────────────────────────────────────────────────────────────
describe('getAuthUrl', () => {
describe('FE-COMP-AUTHURL-001: empty URL returns early', () => {
it('returns empty string without hitting the network', async () => {
const result = await getAuthUrl('', 'download');
expect(result).toBe('');
});
});
describe('FE-COMP-AUTHURL-002: token appended with ?', () => {
it('appends token as first query param when URL has no query string', async () => {
server.use(
http.post('/api/auth/resource-token', () =>
HttpResponse.json({ token: 'abc123' })
)
);
const result = await getAuthUrl('/uploads/file.pdf', 'download');
expect(result).toBe('/uploads/file.pdf?token=abc123');
});
});
describe('FE-COMP-AUTHURL-003: token appended with &', () => {
it('appends token as additional query param when URL already has a query string', async () => {
server.use(
http.post('/api/auth/resource-token', () =>
HttpResponse.json({ token: 'xyz' })
)
);
const result = await getAuthUrl('/uploads/file.pdf?size=lg', 'download');
expect(result).toBe('/uploads/file.pdf?size=lg&token=xyz');
});
});
describe('FE-COMP-AUTHURL-004: non-ok API response returns original URL', () => {
it('returns original URL unchanged when resource-token returns 500', async () => {
server.use(
http.post('/api/auth/resource-token', () =>
HttpResponse.json({}, { status: 500 })
)
);
const result = await getAuthUrl('/uploads/file.pdf', 'download');
expect(result).toBe('/uploads/file.pdf');
});
});
describe('FE-COMP-AUTHURL-005: fetch throws returns original URL', () => {
it('returns original URL when fetch throws a network error', async () => {
vi.spyOn(globalThis, 'fetch').mockRejectedValueOnce(
new TypeError('Network error')
);
const result = await getAuthUrl('/uploads/file.pdf', 'download');
expect(result).toBe('/uploads/file.pdf');
});
});
});
// ── fetchImageAsBlob ───────────────────────────────────────────────────────────
describe('fetchImageAsBlob', () => {
describe('FE-COMP-AUTHURL-006: empty URL returns empty string', () => {
it('resolves to empty string without network call', async () => {
const result = await fetchImageAsBlob('');
expect(result).toBe('');
});
});
describe('FE-COMP-AUTHURL-007: successful fetch returns blob object URL', () => {
it('resolves to a blob URL for a valid image response', async () => {
// Node 22 URL.createObjectURL requires a native node:buffer Blob, not a
// jsdom Blob — passing the wrong type throws ERR_INVALID_ARG_TYPE (caught,
// returns ''). Mock fetch directly with a Node Blob so the real
// URL.createObjectURL works without any mocking needed.
const { Blob: NodeBlob } = await import('node:buffer');
vi.spyOn(globalThis, 'fetch').mockResolvedValueOnce({
ok: true,
blob: () => Promise.resolve(new NodeBlob(['fake-image'], { type: 'image/jpeg' }) as unknown as Blob),
} as unknown as Response);
const result = await fetchImageAsBlob('/uploads/photo.jpg');
expect(result).toMatch(/^blob:/);
});
});
describe('FE-COMP-AUTHURL-008: non-ok response resolves to empty string', () => {
it('resolves to empty string when image URL returns 404', async () => {
server.use(
http.get('/uploads/missing.jpg', () =>
HttpResponse.json({}, { status: 404 })
)
);
const result = await fetchImageAsBlob('/uploads/missing.jpg');
expect(result).toBe('');
});
});
describe('FE-COMP-AUTHURL-009: fetch throws resolves to empty string', () => {
it('resolves to empty string when fetch rejects', async () => {
vi.spyOn(globalThis, 'fetch').mockRejectedValueOnce(
new TypeError('Network error')
);
const result = await fetchImageAsBlob('/uploads/error.jpg');
expect(result).toBe('');
});
});
// ── Concurrency tests use vi.spyOn(fetch) for synchronous barrier control ──
// When the spy mock runs, it executes synchronously up to its first `await`,
// so `resolvers.push(r)` happens synchronously inside fetchImageAsBlob(), giving
// us deterministic access to in-flight requests without needing flushPromises().
describe('FE-COMP-AUTHURL-010: concurrency cap at MAX_CONCURRENT=6', () => {
it('fires at most 6 requests simultaneously', async () => {
let concurrent = 0;
let maxConcurrent = 0;
const resolvers: Array<() => void> = [];
vi.spyOn(globalThis, 'fetch').mockImplementation(async () => {
concurrent++;
maxConcurrent = Math.max(maxConcurrent, concurrent);
await new Promise<void>(r => resolvers.push(r));
concurrent--;
return new Response(new Blob(['img'], { type: 'image/jpeg' }), { status: 200 });
});
const urls = Array.from({ length: 8 }, (_, i) => `/uploads/img${i}.jpg`);
const promises = urls.map(url => fetchImageAsBlob(url));
// After synchronous calls: 6 run()s called fetch() and pushed to resolvers,
// 2 are in the module queue
expect(resolvers.length).toBe(6);
expect(maxConcurrent).toBeLessThanOrEqual(6);
// Drain iteratively: each pass resolves current in-flight requests,
// then the next batch from the queue starts and pushes new resolvers
while (resolvers.length > 0) {
resolvers.splice(0).forEach(r => r());
await flushPromises();
}
await Promise.all(promises);
expect(maxConcurrent).toBeLessThanOrEqual(6);
});
});
describe('FE-COMP-AUTHURL-011: queued request runs after active slot frees', () => {
it('7th request eventually resolves once one of the 6 active slots is freed', async () => {
const resolvers: Array<() => void> = [];
const { Blob: NodeBlob } = await import('node:buffer');
vi.spyOn(globalThis, 'fetch').mockImplementation(async () => {
await new Promise<void>(r => resolvers.push(r));
return {
ok: true,
blob: () => Promise.resolve(new NodeBlob(['img'], { type: 'image/jpeg' }) as unknown as Blob),
} as unknown as Response;
});
const urls = Array.from({ length: 7 }, (_, i) => `/uploads/queue${i}.jpg`);
const promises = urls.map(url => fetchImageAsBlob(url));
// 6 in-flight, 1 queued
expect(resolvers.length).toBe(6);
// Resolve the 6 active requests
resolvers.splice(0).forEach(r => r());
await flushPromises();
// 7th should now have started
expect(resolvers.length).toBe(1);
// Resolve the 7th
resolvers.splice(0).forEach(r => r());
const results = await Promise.all(promises);
expect(results).toHaveLength(7);
results.forEach(r => expect(r).toMatch(/^blob:/));
});
});
});
// ── clearImageQueue ────────────────────────────────────────────────────────────
describe('clearImageQueue', () => {
describe('FE-COMP-AUTHURL-012: clearImageQueue discards pending entries', () => {
it('removes queued items so they never execute after active slots drain', async () => {
const resolvers: Array<() => void> = [];
// Track completions via fetch mock instead of URL.createObjectURL spy —
// URL.createObjectURL is a Node built-in whose identity varies across
// Node versions, making it unreliable to spy on in jsdom tests on CI.
let completedFetches = 0;
const { Blob: NodeBlob } = await import('node:buffer');
vi.spyOn(globalThis, 'fetch').mockImplementation(async () => {
await new Promise<void>(r => resolvers.push(r));
completedFetches++;
return {
ok: true,
blob: () => Promise.resolve(new NodeBlob(['img'], { type: 'image/jpeg' }) as unknown as Blob),
} as unknown as Response;
});
const urls = Array.from({ length: 7 }, (_, i) => `/uploads/clear${i}.jpg`);
const promises = urls.map(url => fetchImageAsBlob(url));
// 6 in-flight, 1 queued
expect(resolvers.length).toBe(6);
// Discard the queued 7th request
clearImageQueue();
// Resolve the 6 active requests and let them drain
resolvers.splice(0).forEach(r => r());
await flushPromises();
// 6 active slots completed; queue was cleared so the 7th never ran
expect(completedFetches).toBe(6);
// First 6 promises resolved; 7th is orphaned (never resolves)
await Promise.all(promises.slice(0, 6));
});
});
});
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