tests+ci: Add and enable a partial unit test coverage

Change-Id: I6dbc5cf4d68679bd6f943322f572313884c8aef7
Refs: #2369
diff --git a/tests/unit-tests/model/ndn-ns3.t.cpp b/tests/unit-tests/model/ndn-ns3.t.cpp
new file mode 100644
index 0000000..bd94360
--- /dev/null
+++ b/tests/unit-tests/model/ndn-ns3.t.cpp
@@ -0,0 +1,60 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2011-2015  Regents of the University of California.
+ *
+ * This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
+ * contributors.
+ *
+ * ndnSIM 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.
+ *
+ * ndnSIM 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
+ * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "model/ndn-ns3.hpp"
+#include "helper/ndn-stack-helper.hpp"
+#include "model/ndn-header.hpp"
+#include "utils/ndn-ns3-packet-tag.hpp"
+
+#include <ndn-cxx/encoding/block.hpp>
+#include <ndn-cxx/interest.hpp>
+#include <ndn-cxx/data.hpp>
+#include <ndn-cxx/name.hpp>
+
+#include "../tests-common.hpp"
+
+namespace ns3 {
+namespace ndn {
+
+BOOST_FIXTURE_TEST_SUITE(ModelNdnNs3, CleanupFixture)
+
+BOOST_AUTO_TEST_CASE(ToPacket)
+{
+  auto interest = make_shared<ndn::Interest>("/prefix");
+  Ptr<Packet> interestPacket = Convert::ToPacket(*interest);
+  uint32_t type1;
+  type1 = Convert::getPacketType(interestPacket);
+
+  BOOST_CHECK_EQUAL(type1, ::ndn::tlv::Interest);
+
+  auto data = std::make_shared<ndn::Data>(interest->getName());
+  data->setFreshnessPeriod(ndn::time::milliseconds(1000));
+  data->setContent(std::make_shared< ::ndn::Buffer>(1024));
+  ndn::StackHelper::getKeyChain().sign(*data);
+  Ptr<Packet> DataPacket = Convert::ToPacket(*data);
+  uint32_t type2;
+  type2 = Convert::getPacketType(DataPacket);
+
+  BOOST_CHECK_EQUAL(type2, ::ndn::tlv::Data);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace ndn
+} // namespace ns3