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/forwarder.cpp b/tests/daemon/fw/forwarder.cpp
new file mode 100644
index 0000000..0151460
--- /dev/null
+++ b/tests/daemon/fw/forwarder.cpp
@@ -0,0 +1,352 @@
+/* -*- 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/>.
+ **/
+
+#include "fw/forwarder.hpp"
+#include "tests/daemon/face/dummy-face.hpp"
+#include "dummy-strategy.hpp"
+
+#include "tests/test-common.hpp"
+#include "tests/limited-io.hpp"
+
+namespace nfd {
+namespace tests {
+
+BOOST_FIXTURE_TEST_SUITE(FwForwarder, BaseFixture)
+
+BOOST_AUTO_TEST_CASE(SimpleExchange)
+{
+  Forwarder forwarder;
+
+  Name nameA  ("ndn:/A");
+  Name nameAB ("ndn:/A/B");
+  Name nameABC("ndn:/A/B/C");
+  shared_ptr<Interest> interestAB = makeInterest(nameAB);
+  interestAB->setInterestLifetime(time::seconds(4));
+  shared_ptr<Data> dataABC = makeData(nameABC);
+
+  shared_ptr<DummyFace> face1 = make_shared<DummyFace>();
+  shared_ptr<DummyFace> face2 = make_shared<DummyFace>();
+  face1->afterSend += bind(&boost::asio::io_service::stop, &g_io);
+  face2->afterSend += bind(&boost::asio::io_service::stop, &g_io);
+  forwarder.addFace(face1);
+  forwarder.addFace(face2);
+
+  Fib& fib = forwarder.getFib();
+  shared_ptr<fib::Entry> fibEntry = fib.insert(Name("ndn:/A")).first;
+  fibEntry->addNextHop(face2, 0);
+
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNInInterests (), 0);
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNOutInterests(), 0);
+  face1->receiveInterest(*interestAB);
+  g_io.run();
+  g_io.reset();
+  BOOST_REQUIRE_EQUAL(face2->m_sentInterests.size(), 1);
+  BOOST_CHECK(face2->m_sentInterests[0].getName().equals(nameAB));
+  BOOST_CHECK_EQUAL(face2->m_sentInterests[0].getIncomingFaceId(), face1->getId());
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNInInterests (), 1);
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNOutInterests(), 1);
+
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNInDatas (), 0);
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNOutDatas(), 0);
+  face2->receiveData(*dataABC);
+  g_io.run();
+  g_io.reset();
+  BOOST_REQUIRE_EQUAL(face1->m_sentDatas.size(), 1);
+  BOOST_CHECK(face1->m_sentDatas[0].getName().equals(nameABC));
+  BOOST_CHECK_EQUAL(face1->m_sentDatas[0].getIncomingFaceId(), face2->getId());
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNInDatas (), 1);
+  BOOST_CHECK_EQUAL(forwarder.getCounters().getNOutDatas(), 1);
+}
+
+class ScopeLocalhostIncomingTestForwarder : public Forwarder
+{
+public:
+  ScopeLocalhostIncomingTestForwarder()
+  {
+  }
+
+  virtual void
+  onDataUnsolicited(Face& inFace, const Data& data)
+  {
+    ++m_onDataUnsolicited_count;
+  }
+
+protected:
+  virtual void
+  dispatchToStrategy(shared_ptr<pit::Entry> pitEntry, function<void(fw::Strategy*)> f)
+  {
+    ++m_dispatchToStrategy_count;
+  }
+
+public:
+  int m_dispatchToStrategy_count;
+  int m_onDataUnsolicited_count;
+};
+
+BOOST_AUTO_TEST_CASE(ScopeLocalhostIncoming)
+{
+  ScopeLocalhostIncomingTestForwarder forwarder;
+  shared_ptr<Face> face1 = make_shared<DummyLocalFace>();
+  shared_ptr<Face> face2 = make_shared<DummyFace>();
+  forwarder.addFace(face1);
+  forwarder.addFace(face2);
+
+  // local face, /localhost: OK
+  forwarder.m_dispatchToStrategy_count = 0;
+  shared_ptr<Interest> i1 = makeInterest("/localhost/A1");
+  forwarder.onIncomingInterest(*face1, *i1);
+  BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 1);
+
+  // non-local face, /localhost: violate
+  forwarder.m_dispatchToStrategy_count = 0;
+  shared_ptr<Interest> i2 = makeInterest("/localhost/A2");
+  forwarder.onIncomingInterest(*face2, *i2);
+  BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 0);
+
+  // local face, non-/localhost: OK
+  forwarder.m_dispatchToStrategy_count = 0;
+  shared_ptr<Interest> i3 = makeInterest("/A3");
+  forwarder.onIncomingInterest(*face1, *i3);
+  BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 1);
+
+  // non-local face, non-/localhost: OK
+  forwarder.m_dispatchToStrategy_count = 0;
+  shared_ptr<Interest> i4 = makeInterest("/A4");
+  forwarder.onIncomingInterest(*face2, *i4);
+  BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 1);
+
+  // local face, /localhost: OK
+  forwarder.m_onDataUnsolicited_count = 0;
+  shared_ptr<Data> d1 = makeData("/localhost/B1");
+  forwarder.onIncomingData(*face1, *d1);
+  BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 1);
+
+  // non-local face, /localhost: OK
+  forwarder.m_onDataUnsolicited_count = 0;
+  shared_ptr<Data> d2 = makeData("/localhost/B2");
+  forwarder.onIncomingData(*face2, *d2);
+  BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 0);
+
+  // local face, non-/localhost: OK
+  forwarder.m_onDataUnsolicited_count = 0;
+  shared_ptr<Data> d3 = makeData("/B3");
+  forwarder.onIncomingData(*face1, *d3);
+  BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 1);
+
+  // non-local face, non-/localhost: OK
+  forwarder.m_onDataUnsolicited_count = 0;
+  shared_ptr<Data> d4 = makeData("/B4");
+  forwarder.onIncomingData(*face2, *d4);
+  BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 1);
+}
+
+BOOST_AUTO_TEST_CASE(ScopeLocalhostOutgoing)
+{
+  Forwarder forwarder;
+  shared_ptr<DummyLocalFace> face1 = make_shared<DummyLocalFace>();
+  shared_ptr<DummyFace>      face2 = make_shared<DummyFace>();
+  shared_ptr<Face>           face3 = make_shared<DummyLocalFace>();
+  forwarder.addFace(face1);
+  forwarder.addFace(face2);
+  forwarder.addFace(face3);
+  Pit& pit = forwarder.getPit();
+
+  // local face, /localhost: OK
+  shared_ptr<Interest> interestA1 = makeInterest("/localhost/A1");
+  shared_ptr<pit::Entry> pitA1 = pit.insert(*interestA1).first;
+  pitA1->insertOrUpdateInRecord(face3, *interestA1);
+  face1->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pitA1, *face1);
+  BOOST_CHECK_EQUAL(face1->m_sentInterests.size(), 1);
+
+  // non-local face, /localhost: violate
+  shared_ptr<Interest> interestA2 = makeInterest("/localhost/A2");
+  shared_ptr<pit::Entry> pitA2 = pit.insert(*interestA2).first;
+  pitA2->insertOrUpdateInRecord(face3, *interestA2);
+  face2->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pitA2, *face2);
+  BOOST_CHECK_EQUAL(face2->m_sentInterests.size(), 0);
+
+  // local face, non-/localhost: OK
+  shared_ptr<Interest> interestA3 = makeInterest("/A3");
+  shared_ptr<pit::Entry> pitA3 = pit.insert(*interestA3).first;
+  pitA3->insertOrUpdateInRecord(face3, *interestA3);
+  face1->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pitA3, *face1);
+  BOOST_CHECK_EQUAL(face1->m_sentInterests.size(), 1);
+
+  // non-local face, non-/localhost: OK
+  shared_ptr<Interest> interestA4 = makeInterest("/A4");
+  shared_ptr<pit::Entry> pitA4 = pit.insert(*interestA4).first;
+  pitA4->insertOrUpdateInRecord(face3, *interestA4);
+  face2->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pitA4, *face2);
+  BOOST_CHECK_EQUAL(face2->m_sentInterests.size(), 1);
+
+  // local face, /localhost: OK
+  face1->m_sentDatas.clear();
+  forwarder.onOutgoingData(Data("/localhost/B1"), *face1);
+  BOOST_CHECK_EQUAL(face1->m_sentDatas.size(), 1);
+
+  // non-local face, /localhost: OK
+  face2->m_sentDatas.clear();
+  forwarder.onOutgoingData(Data("/localhost/B2"), *face2);
+  BOOST_CHECK_EQUAL(face2->m_sentDatas.size(), 0);
+
+  // local face, non-/localhost: OK
+  face1->m_sentDatas.clear();
+  forwarder.onOutgoingData(Data("/B3"), *face1);
+  BOOST_CHECK_EQUAL(face1->m_sentDatas.size(), 1);
+
+  // non-local face, non-/localhost: OK
+  face2->m_sentDatas.clear();
+  forwarder.onOutgoingData(Data("/B4"), *face2);
+  BOOST_CHECK_EQUAL(face2->m_sentDatas.size(), 1);
+}
+
+BOOST_AUTO_TEST_CASE(ScopeLocalhopOutgoing)
+{
+  Forwarder forwarder;
+  shared_ptr<DummyLocalFace> face1 = make_shared<DummyLocalFace>();
+  shared_ptr<DummyFace>      face2 = make_shared<DummyFace>();
+  shared_ptr<DummyLocalFace> face3 = make_shared<DummyLocalFace>();
+  shared_ptr<DummyFace>      face4 = make_shared<DummyFace>();
+  forwarder.addFace(face1);
+  forwarder.addFace(face2);
+  forwarder.addFace(face3);
+  forwarder.addFace(face4);
+  Pit& pit = forwarder.getPit();
+
+  // from local face, to local face: OK
+  shared_ptr<Interest> interest1 = makeInterest("/localhop/1");
+  shared_ptr<pit::Entry> pit1 = pit.insert(*interest1).first;
+  pit1->insertOrUpdateInRecord(face1, *interest1);
+  face3->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pit1, *face3);
+  BOOST_CHECK_EQUAL(face3->m_sentInterests.size(), 1);
+
+  // from non-local face, to local face: OK
+  shared_ptr<Interest> interest2 = makeInterest("/localhop/2");
+  shared_ptr<pit::Entry> pit2 = pit.insert(*interest2).first;
+  pit2->insertOrUpdateInRecord(face2, *interest2);
+  face3->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pit2, *face3);
+  BOOST_CHECK_EQUAL(face3->m_sentInterests.size(), 1);
+
+  // from local face, to non-local face: OK
+  shared_ptr<Interest> interest3 = makeInterest("/localhop/3");
+  shared_ptr<pit::Entry> pit3 = pit.insert(*interest3).first;
+  pit3->insertOrUpdateInRecord(face1, *interest3);
+  face4->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pit3, *face4);
+  BOOST_CHECK_EQUAL(face4->m_sentInterests.size(), 1);
+
+  // from non-local face, to non-local face: violate
+  shared_ptr<Interest> interest4 = makeInterest("/localhop/4");
+  shared_ptr<pit::Entry> pit4 = pit.insert(*interest4).first;
+  pit4->insertOrUpdateInRecord(face2, *interest4);
+  face4->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pit4, *face4);
+  BOOST_CHECK_EQUAL(face4->m_sentInterests.size(), 0);
+
+  // from local face and non-local face, to local face: OK
+  shared_ptr<Interest> interest5 = makeInterest("/localhop/5");
+  shared_ptr<pit::Entry> pit5 = pit.insert(*interest5).first;
+  pit5->insertOrUpdateInRecord(face1, *interest5);
+  pit5->insertOrUpdateInRecord(face2, *interest5);
+  face3->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pit5, *face3);
+  BOOST_CHECK_EQUAL(face3->m_sentInterests.size(), 1);
+
+  // from local face and non-local face, to non-local face: OK
+  shared_ptr<Interest> interest6 = makeInterest("/localhop/6");
+  shared_ptr<pit::Entry> pit6 = pit.insert(*interest6).first;
+  pit6->insertOrUpdateInRecord(face1, *interest6);
+  pit6->insertOrUpdateInRecord(face2, *interest6);
+  face4->m_sentInterests.clear();
+  forwarder.onOutgoingInterest(pit6, *face4);
+  BOOST_CHECK_EQUAL(face4->m_sentInterests.size(), 1);
+}
+
+BOOST_AUTO_TEST_CASE(StrategyDispatch)
+{
+  LimitedIo limitedIo;
+  Forwarder forwarder;
+  shared_ptr<Face> face1 = make_shared<DummyFace>();
+  shared_ptr<Face> face2 = make_shared<DummyFace>();
+  forwarder.addFace(face1);
+  forwarder.addFace(face2);
+
+  StrategyChoice& strategyChoice = forwarder.getStrategyChoice();
+  shared_ptr<DummyStrategy> strategyP = make_shared<DummyStrategy>(
+                                        boost::ref(forwarder), "ndn:/strategyP");
+  shared_ptr<DummyStrategy> strategyQ = make_shared<DummyStrategy>(
+                                        boost::ref(forwarder), "ndn:/strategyQ");
+  strategyChoice.install(strategyP);
+  strategyChoice.install(strategyQ);
+  strategyChoice.insert("ndn:/" , strategyP->getName());
+  strategyChoice.insert("ndn:/B", strategyQ->getName());
+
+  shared_ptr<Interest> interest1 = makeInterest("ndn:/A/1");
+  strategyP->m_afterReceiveInterest_count = 0;
+  strategyP->m_interestOutFace = face2;
+  forwarder.onInterest(*face1, *interest1);
+  BOOST_CHECK_EQUAL(strategyP->m_afterReceiveInterest_count, 1);
+
+  shared_ptr<Interest> interest2 = makeInterest("ndn:/B/2");
+  strategyQ->m_afterReceiveInterest_count = 0;
+  strategyQ->m_interestOutFace = face2;
+  forwarder.onInterest(*face1, *interest2);
+  BOOST_CHECK_EQUAL(strategyQ->m_afterReceiveInterest_count, 1);
+
+  limitedIo.run(LimitedIo::UNLIMITED_OPS, time::milliseconds(5));
+
+  shared_ptr<Data> data1 = makeData("ndn:/A/1/a");
+  strategyP->m_beforeSatisfyPendingInterest_count = 0;
+  forwarder.onData(*face2, *data1);
+  BOOST_CHECK_EQUAL(strategyP->m_beforeSatisfyPendingInterest_count, 1);
+
+  shared_ptr<Data> data2 = makeData("ndn:/B/2/b");
+  strategyQ->m_beforeSatisfyPendingInterest_count = 0;
+  forwarder.onData(*face2, *data2);
+  BOOST_CHECK_EQUAL(strategyQ->m_beforeSatisfyPendingInterest_count, 1);
+
+  shared_ptr<Interest> interest3 = makeInterest("ndn:/A/3");
+  interest3->setInterestLifetime(time::milliseconds(30));
+  forwarder.onInterest(*face1, *interest3);
+  shared_ptr<Interest> interest4 = makeInterest("ndn:/B/4");
+  interest4->setInterestLifetime(time::milliseconds(5000));
+  forwarder.onInterest(*face1, *interest4);
+
+  strategyP->m_beforeExpirePendingInterest_count = 0;
+  strategyQ->m_beforeExpirePendingInterest_count = 0;
+  limitedIo.run(LimitedIo::UNLIMITED_OPS, time::milliseconds(100));
+  BOOST_CHECK_EQUAL(strategyP->m_beforeExpirePendingInterest_count, 1);
+  BOOST_CHECK_EQUAL(strategyQ->m_beforeExpirePendingInterest_count, 0);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace nfd