test(e2e): make archive fixtures deterministic

e2e/archive.spec.ts

@@ -1,4 +1,3 @@
-import { randomBytes } from 'node:crypto'
 import { expect, type Page, test } from '@playwright/test'
 import { DirType } from '../shared/constants'
 import type { BackgroundJob, PaginatedResponse, StorageObject } from '../shared/types'
@@ -12,8 +11,8 @@ test.describe('Archive jobs with queued streaming workers @all @critical', () =>
 
   test('compresses and extracts through the background queue', async ({ page }) => {
     await signUpAndGoToFiles(page)
-    await seedFile(page, 'alpha.txt', randomBytes(fixtureSize))
-    await seedFile(page, 'beta.txt', randomBytes(fixtureSize))
+    await seedFile(page, 'alpha.txt', fixtureBytes(fixtureSize, 0x13579bdf))
+    await seedFile(page, 'beta.txt', fixtureBytes(fixtureSize, 0x2468ace0))
     await page.reload()
 
     await selectFile(page, 'alpha.txt')
@@ -118,3 +117,15 @@ async function expectJobCompleted(page: Page, jobId: string): Promise<Background
 function isBackgroundJobPost(url: string, method: string) {
   return method === 'POST' && url.includes('/api/background-jobs')
 }
+
+function fixtureBytes(size: number, seed: number): Buffer {
+  const bytes = Buffer.allocUnsafe(size)
+  let state = seed
+  for (let index = 0; index < size; index += 1) {
+    state ^= state << 13
+    state ^= state >>> 17
+    state ^= state << 5
+    bytes[index] = state
+  }
+  return bytes
+}