diff --git a/tests/unit-tests/helper/ndn-global-routing-helper.t.cpp b/tests/unit-tests/helper/ndn-global-routing-helper.t.cpp
new file mode 100644
index 0000000..318c824
--- /dev/null
+++ b/tests/unit-tests/helper/ndn-global-routing-helper.t.cpp
@@ -0,0 +1,140 @@
+/* -*- 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 "helper/ndn-global-routing-helper.hpp"
+
+#include "model/ndn-global-router.hpp"
+#include "model/ndn-l3-protocol.hpp"
+#include "model/ndn-face.hpp"
+#include "model/ndn-net-device-face.hpp"
+
+#include "ns3/channel.h"
+#include "ns3/net-device.h"
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/ndnSIM-module.h"
+#include "ns3/point-to-point-net-device.h"
+#include "ns3/point-to-point-module.h"
+#include "ns3/point-to-point-layout-module.h"
+
+#include "../tests-common.hpp"
+
+namespace ns3 {
+namespace ndn {
+
+BOOST_FIXTURE_TEST_SUITE(HelperGlobalRoutingHelper, CleanupFixture)
+
+BOOST_AUTO_TEST_CASE(CalculateRouteCase1)
+{
+  ofstream file1("/tmp/topo1.txt");
+  file1 << "router\n\n"
+        << "#node city  y x mpi-partition\n"
+        << "A1  NA  1 1 1\n"
+        << "B1  NA  80  -40 1\n"
+        << "C1  NA  80  40  1\n\n"
+        << "link\n\n"
+        << "# from  to  capacity  metric  delay queue\n"
+        << "A1      B1  10Mbps    100 1ms 100\n"
+        << "A1      C1  10Mbps    50  1ms 100\n"
+        << "B1      C1  10Mbps    1 1ms 100\n";
+  file1.close();
+
+  AnnotatedTopologyReader topologyReader("");
+  topologyReader.SetFileName("/tmp/topo1.txt");
+  topologyReader.Read();
+
+  // Install NDN stack on all nodes
+  ndn::StackHelper ndnHelper;
+  ndnHelper.InstallAll();
+
+  topologyReader.ApplyOspfMetric();
+
+  ndn::GlobalRoutingHelper ndnGlobalRoutingHelper;
+  BOOST_CHECK_NO_THROW(ndnGlobalRoutingHelper.InstallAll());
+
+  ndnGlobalRoutingHelper.AddOrigins("/test/prefix", Names::Find<Node>("C1"));
+  BOOST_CHECK_NO_THROW(ndn::GlobalRoutingHelper::CalculateRoutes());
+
+  auto ndn = Names::Find<Node>("A1")->GetObject<ndn::L3Protocol>();
+  for (const auto& entry : ndn->getForwarder()->getFib()) {
+    bool isFirst = true;
+    for (auto& nextHop : entry.getNextHops()) {
+      auto face = dynamic_pointer_cast<ndn::NetDeviceFace>(nextHop.getFace());
+      if (face == nullptr)
+        continue;
+      BOOST_CHECK_EQUAL(Names::FindName(face->GetNetDevice()->GetChannel()->GetDevice(1)->GetNode()), "C1");
+      isFirst = false;
+    }
+  }
+
+  Simulator::Stop(Seconds(20.0));
+  Simulator::Run();
+}
+
+BOOST_AUTO_TEST_CASE(CalculateRouteCase2)
+{
+  ofstream file1("/tmp/topo2.txt");
+  file1 << "router\n\n"
+        << "#node city  y x mpi-partition\n"
+        << "A2  NA  1 1 1\n"
+        << "B2  NA  80  -40 1\n"
+        << "C2  NA  80  40  1\n\n"
+        << "link\n\n"
+        << "# from  to  capacity  metric  delay queue\n"
+        << "A2      B2  10Mbps    100 1ms 100\n"
+        << "A2      C2  10Mbps    500  1ms 100\n"
+        << "B2      C2  10Mbps    1 1ms 100\n";
+  file1.close();
+
+  AnnotatedTopologyReader topologyReader("");
+  topologyReader.SetFileName("/tmp/topo2.txt");
+  topologyReader.Read();
+
+  // Install NDN stack on all nodes
+  ndn::StackHelper ndnHelper;
+  ndnHelper.InstallAll();
+
+  topologyReader.ApplyOspfMetric();
+
+  ndn::GlobalRoutingHelper ndnGlobalRoutingHelper;
+  ndnGlobalRoutingHelper.InstallAll();
+
+  ndnGlobalRoutingHelper.AddOrigins("/prefix", Names::Find<Node>("C2"));
+  ndn::GlobalRoutingHelper::CalculateRoutes();
+
+  auto ndn = Names::Find<Node>("A2")->GetObject<ndn::L3Protocol>();
+  for (const auto& entry : ndn->getForwarder()->getFib()) {
+    bool isFirst = true;
+    for (auto& nextHop : entry.getNextHops()) {
+      auto face = dynamic_pointer_cast<ndn::NetDeviceFace>(nextHop.getFace());
+      if (face == nullptr)
+        continue;
+      BOOST_CHECK_EQUAL(Names::FindName(face->GetNetDevice()->GetChannel()->GetDevice(1)->GetNode()), "B2");
+      isFirst = false;
+    }
+  }
+
+  Simulator::Stop(Seconds(20.0));
+  Simulator::Run();
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace ndn
+} // namespace ns3