tests: use decorators to label test data generators

Also various minor cleanups

Change-Id: Iaee434991b923abdf464293fec35da22d6cb449a
diff --git a/tests/unit/interest.t.cpp b/tests/unit/interest.t.cpp
index 73b7bef..c67bd0e 100644
--- a/tests/unit/interest.t.cpp
+++ b/tests/unit/interest.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).
  *
@@ -686,7 +686,7 @@
 }
 
 BOOST_AUTO_TEST_CASE(MatchesInterest,
-  * boost::unit_test::expected_failures(1))
+  * ut::expected_failures(1))
 {
   Interest interest;
   interest.setName("/A")