tests: use decorators to label test data generators

Also various minor cleanups

Change-Id: Iaee434991b923abdf464293fec35da22d6cb449a
diff --git a/tests/unit/util/scheduler.t.cpp b/tests/unit/util/scheduler.t.cpp
index 88c4313..ec59c30 100644
--- a/tests/unit/util/scheduler.t.cpp
+++ b/tests/unit/util/scheduler.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2023 Regents of the University of California.
+ * Copyright (c) 2013-2024 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -201,7 +201,8 @@
   BOOST_CHECK_EQUAL(count, 0);
 }
 
-BOOST_AUTO_TEST_CASE(CancelAllWithScopedEventId) // Bug 3691
+BOOST_AUTO_TEST_CASE(CancelAllWithScopedEventId,
+  * ut::description("test for bug #3691"))
 {
   ScopedEventId eid = scheduler.schedule(10_ms, []{});
   scheduler.cancelAllEvents();