Bausteine: slugify mit Umlauten, deutsche Zeit, Sperren

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/keyedLock.test.js

@@ -0,0 +1,39 @@
+import { test, beforeEach } from 'node:test'
+import assert from 'node:assert/strict'
+import { withLocks } from '../server/services/keyedLock.js'
+
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms))
+
+let log
+beforeEach(() => {
+  log = []
+})
+
+const job = (name, ms) => async () => {
+  log.push(name + ':start')
+  await sleep(ms)
+  log.push(name + ':end')
+}
+
+test('gleicher Schlüssel läuft nacheinander', async () => {
+  await Promise.all([withLocks(['a'], job('1', 50)), withLocks(['a'], job('2', 10))])
+  assert.deepEqual(log, ['1:start', '1:end', '2:start', '2:end'])
+})
+test('verschiedene Schlüssel laufen parallel', async () => {
+  await Promise.all([withLocks(['a'], job('1', 50)), withLocks(['b'], job('2', 10))])
+  assert.deepEqual(log.slice(0, 2), ['1:start', '2:start'])
+})
+test('mehrere Schlüssel sperren alle', async () => {
+  await Promise.all([withLocks(['a', 'b'], job('1', 50)), withLocks(['b'], job('2', 10))])
+  assert.deepEqual(log, ['1:start', '1:end', '2:start', '2:end'])
+})
+test('waitMs begrenzt das Warten', async () => {
+  const t0 = Date.now()
+  let started
+  await Promise.all([withLocks(['a'], job('1', 300)), withLocks(['a'], async () => { started = Date.now() - t0 }, { waitMs: 50 })])
+  assert.ok(started >= 45 && started < 250, `gestartet nach ${started} ms`)
+})
+test('Fehler geben die Sperre frei', async () => {
+  await assert.rejects(withLocks(['a'], async () => { throw new Error('x') }))
+  assert.equal(await withLocks(['a'], async () => 42), 42)
+})