build: switch to C++17
Change-Id: Id6217b5c993f3e4726e89773128b565e5f136bb6
diff --git a/tests/io-fixture.hpp b/tests/io-fixture.hpp
index 881065c..71b098a 100644
--- a/tests/io-fixture.hpp
+++ b/tests/io-fixture.hpp
@@ -1,6 +1,6 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
- * Copyright (c) 2014-2020, Regents of the University of California,
+ * Copyright (c) 2014-2022, Regents of the University of California,
* Arizona Board of Regents,
* Colorado State University,
* University Pierre & Marie Curie, Sorbonne University,
@@ -30,8 +30,7 @@
#include <boost/asio/io_service.hpp>
-namespace ndn {
-namespace tests {
+namespace ndn::tests {
class IoFixture : public ClockFixture
{
@@ -53,7 +52,6 @@
boost::asio::io_service m_io;
};
-} // namespace tests
-} // namespace ndn
+} // namespace ndn::tests
#endif // NDN_TOOLS_TESTS_IO_FIXTURE_HPP