Implement direct sign-up to an event with registration derived from meeting point memberships

backend/services/registration.service.test.js

@@ -955,6 +955,17 @@ describe('registration — a direct sign-up: a Join naming an event itself', ()
     }
   });
 
+  test('a declarer signing up to, then leaving, their own event is not notified', async () => {
+    const j = join(PLAIN, T0, ALICE);
+    const l = leave(PLAIN, T1, ALICE);
+    const w = plainWorld([j, l]);
+    await emitJoin(w, j);
+    await emitLeave(w, l);
+    expect(attendees(w, PLAIN)).toEqual([]);
+    expect(ledgerOf(w, PLAIN, ALICE).change).toBe('leave');
+    expect(w.state.notifications).toEqual([]);
+  });
+
   test('the same person carries a different URN on another event (R7e)', async () => {
     const OTHER = `${ALICE}/data/events/other`;
     const a = join(PLAIN, T0, BOB, 1);