tests: respect naming conventions and improve nesting of some test suites

Change-Id: I255c27b552b32570871a9d5f8bda814ba8723c80
Refs: #2497
diff --git a/tests/unit-tests/meta-info.t.cpp b/tests/unit-tests/meta-info.t.cpp
index d07acaf..3fd8b3c 100644
--- a/tests/unit-tests/meta-info.t.cpp
+++ b/tests/unit-tests/meta-info.t.cpp
@@ -194,7 +194,7 @@
   BOOST_CHECK_THROW(info.addAppMetaInfo(makeNonNegativeIntegerBlock(253, 1000)), MetaInfo::Error);
 }
 
-BOOST_AUTO_TEST_SUITE_END()
+BOOST_AUTO_TEST_SUITE_END() // TestMetaInfo
 
 } // namespace tests
 } // namespace ndn