Fix compilation with latest ndn-cxx

Change-Id: Iaf468a75466134d18ecbb1fef66e4cb401d781a4
diff --git a/tests/unit-tests/dummy-forwarder.cpp b/tests/unit-tests/dummy-forwarder.cpp
new file mode 100644
index 0000000..224dcd3
--- /dev/null
+++ b/tests/unit-tests/dummy-forwarder.cpp
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2012-2017 University of California, Los Angeles
+ *
+ * This file is part of ChronoSync, synchronization library for distributed realtime
+ * applications for NDN.
+ *
+ * ChronoSync 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.
+ *
+ * ChronoSync 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
+ * ChronoSync, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "dummy-forwarder.hpp"
+
+#include <boost/asio/io_service.hpp>
+
+namespace ndn {
+namespace chronosync {
+
+DummyForwarder::DummyForwarder(boost::asio::io_service& io, KeyChain& keyChain)
+  : m_io(io)
+  , m_keyChain(keyChain)
+{
+}
+
+Face&
+DummyForwarder::addFace()
+{
+  auto face = std::make_shared<util::DummyClientFace>(m_io, m_keyChain,
+                                                      util::DummyClientFace::Options{true, true});
+  face->onSendInterest.connect([this, face] (const Interest& interest) {
+      Interest i(interest);
+      for (auto& otherFace : m_faces) {
+        if (&*face == &*otherFace) {
+          continue;
+        }
+        m_io.post([=] { otherFace->receive(i); });
+      }
+    });
+  face->onSendData.connect([this, face] (const Data& data) {
+      Data d(data);
+      for (auto& otherFace : m_faces) {
+        if (&*face == &*otherFace) {
+          continue;
+        }
+        m_io.post([=] { otherFace->receive(d); });
+      }
+    });
+
+  face->onSendNack.connect([this, face] (const lp::Nack& nack) {
+      lp::Nack n(nack);
+      for (auto& otherFace : m_faces) {
+        if (&*face == &*otherFace) {
+          continue;
+        }
+        m_io.post([=] { otherFace->receive(n); });
+      }
+    });
+
+  m_faces.push_back(face);
+  return *face;
+}
+
+} // namespace chronosync
+} // namespace ndn