diff --git a/tests/unit/ndns-enum.cpp b/tests/unit/ndns-enum.cpp
new file mode 100644
index 0000000..c396b6b
--- /dev/null
+++ b/tests/unit/ndns-enum.cpp
@@ -0,0 +1,45 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014, Regents of the University of California.
+ *
+ * This file is part of NDNS (Named Data Networking Domain Name Service).
+ * See AUTHORS.md for complete list of NDNS authors and contributors.
+ *
+ * NDNS is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NDNS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NDNS, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ndns-enum.hpp"
+#include "../boost-test.hpp"
+
+namespace ndn {
+namespace ndns {
+namespace tests {
+
+BOOST_AUTO_TEST_SUITE(NdnsEnum)
+
+BOOST_AUTO_TEST_CASE(NdnsTypeToString)
+{
+  BOOST_CHECK_EQUAL(toString(NDNS_RESP), "NDNS-Resp");
+  BOOST_CHECK_EQUAL(toString(NDNS_AUTH), "NDNS-Auth");
+  BOOST_CHECK_EQUAL(toString(NDNS_NACK), "NDNS-Nack");
+  BOOST_CHECK_EQUAL(toString(NDNS_NULL), "NDNS-Null");
+
+  BOOST_CHECK_EQUAL(toString(static_cast<NdnsType>(254)), "UNKNOWN");
+  BOOST_CHECK_EQUAL(toString(static_cast<NdnsType>(255)), "UNKNOWN");
+  BOOST_CHECK_EQUAL(toString(static_cast<NdnsType>(256)), "UNKNOWN");
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace ndns
+} // namespace ndn