Migrate to C++17 and misc code cleanups

Change-Id: I6b63385c92361a7ef5803d2bfd00f39c77e88d34
diff --git a/tests/unit/sqlite-handle.cpp b/tests/unit/sqlite-handle.cpp
index 9cfb0bf..d3ae687 100644
--- a/tests/unit/sqlite-handle.cpp
+++ b/tests/unit/sqlite-handle.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2018, Regents of the University of California.
+ * Copyright (c) 2014-2022, Regents of the University of California.
  *
  * This file is part of NDN repo-ng (Next generation of NDN repository).
  * See AUTHORS.md for complete list of repo-ng authors and contributors.
@@ -25,8 +25,7 @@
 #include <boost/test/unit_test.hpp>
 #include <random>
 
-namespace repo {
-namespace tests {
+namespace repo::tests {
 
 BOOST_AUTO_TEST_SUITE(SqliteStorage)
 
@@ -39,13 +38,10 @@
 
 BOOST_FIXTURE_TEST_CASE_TEMPLATE(InsertReadDelete, T, CommonDatasets, Fixture<T>)
 {
-  BOOST_TEST_CHECKPOINT(T::getName());
-
   std::vector<Name> names;
 
   // Insert
-  for (auto i = this->data.begin();
-       i != this->data.end(); ++i) {
+  for (auto i = this->data.begin(); i != this->data.end(); ++i) {
     Name name = Name();
     this->handle->insert(**i);
     name = (*i)->getFullName();
@@ -76,5 +72,4 @@
 
 BOOST_AUTO_TEST_SUITE_END()
 
-} // namespace tests
-} // namespace repo
+} // namespace repo::tests