src: Reorganizing source code in preparation to merge NRD code

Note that as of this commit, there are several changes in location of
compiled binaries in `build/` folder:

* `nfd` has been moved to `build/bin/nfd`
* `unit-tests` has been split into `unit-tests-core` and `unit-tests-daemon`

Change-Id: I2c830c117879edbaa5457d6423c13f0273285919
Refs: #1486
diff --git a/tests/daemon/fw/strategy-tester.hpp b/tests/daemon/fw/strategy-tester.hpp
new file mode 100644
index 0000000..e3debef
--- /dev/null
+++ b/tests/daemon/fw/strategy-tester.hpp
@@ -0,0 +1,89 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014  Regents of the University of California,
+ *                     Arizona Board of Regents,
+ *                     Colorado State University,
+ *                     University Pierre & Marie Curie, Sorbonne University,
+ *                     Washington University in St. Louis,
+ *                     Beijing Institute of Technology
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD 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.
+ *
+ * NFD 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
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#ifndef NFD_TESTS_NFD_FW_STRATEGY_TESTER_HPP
+#define NFD_TESTS_NFD_FW_STRATEGY_TESTER_HPP
+
+#include <boost/tuple/tuple_comparison.hpp>
+#include "fw/strategy.hpp"
+
+namespace nfd {
+namespace tests {
+
+/** \class StrategyTester
+ *  \brief extends strategy S for unit testing
+ *
+ *  Actions invoked by S are recorded but not passed to forwarder
+ */
+template<typename S>
+class StrategyTester : public S
+{
+public:
+  explicit
+  StrategyTester(Forwarder& forwarder)
+    : S(forwarder, Name(S::STRATEGY_NAME).append("tester"))
+  {
+  }
+
+  /// fires after each Action
+  EventEmitter<> onAction;
+
+protected:
+  virtual void
+  sendInterest(shared_ptr<pit::Entry> pitEntry,shared_ptr<Face> outFace);
+
+  virtual void
+  rejectPendingInterest(shared_ptr<pit::Entry> pitEntry);
+
+public:
+  typedef boost::tuple<shared_ptr<pit::Entry>, shared_ptr<Face> > SendInterestArgs;
+  std::vector<SendInterestArgs> m_sendInterestHistory;
+
+  typedef boost::tuple<shared_ptr<pit::Entry> > RejectPendingInterestArgs;
+  std::vector<RejectPendingInterestArgs> m_rejectPendingInterestHistory;
+};
+
+
+template<typename S>
+inline void
+StrategyTester<S>::sendInterest(shared_ptr<pit::Entry> pitEntry,
+                                shared_ptr<Face> outFace)
+{
+  m_sendInterestHistory.push_back(SendInterestArgs(pitEntry, outFace));
+  pitEntry->insertOrUpdateOutRecord(outFace, pitEntry->getInterest());
+  onAction();
+}
+
+template<typename S>
+inline void
+StrategyTester<S>::rejectPendingInterest(shared_ptr<pit::Entry> pitEntry)
+{
+  m_rejectPendingInterestHistory.push_back(RejectPendingInterestArgs(pitEntry));
+  onAction();
+}
+
+} // namespace tests
+} // namespace nfd
+
+#endif // NFD_TESTS_NFD_FW_STRATEGY_TESTER_HPP