Index: test/long-poll.test.js
===================================================================
--- test/long-poll.test.js	(revision 2a17f0a714ea476a1c6090cbbad470e9a2d46104)
+++ test/long-poll.test.js	(revision 2a17f0a714ea476a1c6090cbbad470e9a2d46104)
@@ -0,0 +1,32 @@
+// Long-poll on news (Robins verzoek, 31-7): the thread in the app holds a
+// request open; anything push-worthy wakes every waiter exactly once, and an
+// unsubscribed waiter is never woken. The route wires this to 200/204.
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+
+process.env.DATABASE_PATH = ':memory:';
+process.env.PUBLIC_BASE_URL = 'https://test.example';
+
+const dbMod = await import('../src/config/database.js');
+dbMod.initializeDatabase();
+const AP = await import('../src/services/ActivityPubService.js');
+
+test('news wakes every waiter once, and only for that account', () => {
+  let a = 0, b = 0, other = 0;
+  AP.onNews('kid', () => a++);
+  AP.onNews('kid', () => b++);
+  AP.onNews('ander', () => other++);
+  AP.wakeNews('kid');
+  assert.equal(a, 1); assert.equal(b, 1);
+  assert.equal(other, 0, 'someone else\'s news is not yours');
+  AP.wakeNews('kid');
+  assert.equal(a, 1, 'a waiter fires once; the app re-arms with a new request');
+});
+
+test('an unsubscribed waiter stays silent', () => {
+  let fired = 0;
+  const off = AP.onNews('kid', () => fired++);
+  off();
+  AP.wakeNews('kid');
+  assert.equal(fired, 0);
+});