face: Refactor Face as LinkService+Transport

LpFace: new Face implementation
LpFaceWrapper: allows new Face system to work with old Face system

Eventually, LpFace will be renamed to Face and LpFaceWrapper will be removed.

refs #3088 #3179

Change-Id: Ia4ad7c84631e65b444d4f24e1d7593392927c8db
diff --git a/tests/daemon/face/lp-face-wrapper.t.cpp b/tests/daemon/face/lp-face-wrapper.t.cpp
new file mode 100644
index 0000000..182d2fc
--- /dev/null
+++ b/tests/daemon/face/lp-face-wrapper.t.cpp
@@ -0,0 +1,173 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2015,  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,
+ *                           The University of Memphis.
+ *
+ * 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 "face/lp-face-wrapper.hpp"
+#include "fw/forwarder.hpp"
+
+#include "tests/test-common.hpp"
+#include "dummy-lp-face.hpp"
+
+namespace nfd {
+namespace face {
+namespace tests {
+
+using namespace nfd::tests;
+
+BOOST_AUTO_TEST_SUITE(Face)
+BOOST_FIXTURE_TEST_SUITE(TestLpFaceWrapper, BaseFixture)
+
+BOOST_AUTO_TEST_CASE(SetId)
+{
+  Forwarder forwarder;
+  auto face1w = make_shared<face::LpFaceWrapper>(make_unique<DummyLpFace>());
+  auto face1 = static_cast<DummyLpFace*>(face1w->getLpFace());
+
+  BOOST_CHECK_EQUAL(face1->getId(), nfd::face::INVALID_FACEID);
+  BOOST_CHECK_EQUAL(face1w->getId(), nfd::INVALID_FACEID);
+
+  forwarder.addFace(face1w);
+
+  BOOST_CHECK_NE(face1->getId(), nfd::face::INVALID_FACEID);
+  BOOST_CHECK_NE(face1w->getId(), nfd::INVALID_FACEID);
+  BOOST_CHECK_EQUAL(face1->getId(), static_cast<face::FaceId>(face1w->getId()));
+}
+
+BOOST_AUTO_TEST_CASE(SetPersistency)
+{
+  unique_ptr<LpFace> face1u = make_unique<DummyLpFace>();
+  face1u->setPersistency(ndn::nfd::FACE_PERSISTENCY_ON_DEMAND);
+
+  auto face1w = make_shared<face::LpFaceWrapper>(std::move(face1u));
+  auto face1 = static_cast<DummyLpFace*>(face1w->getLpFace());
+
+  BOOST_CHECK_EQUAL(face1->getPersistency(), ndn::nfd::FACE_PERSISTENCY_ON_DEMAND);
+  BOOST_CHECK_EQUAL(face1w->getPersistency(), ndn::nfd::FACE_PERSISTENCY_ON_DEMAND);
+
+  face1w->setPersistency(ndn::nfd::FACE_PERSISTENCY_PERMANENT);
+
+  BOOST_CHECK_EQUAL(face1->getPersistency(), ndn::nfd::FACE_PERSISTENCY_PERMANENT);
+  BOOST_CHECK_EQUAL(face1w->getPersistency(), ndn::nfd::FACE_PERSISTENCY_PERMANENT);
+}
+
+BOOST_AUTO_TEST_CASE(FailSignal)
+{
+  auto face1w = make_shared<face::LpFaceWrapper>(make_unique<DummyLpFace>());
+  auto face1 = static_cast<DummyLpFace*>(face1w->getLpFace());
+
+  bool isFailed = false;
+  face1w->onFail.connect(bind([&isFailed] { isFailed = true; }));
+
+  face1->setState(FaceState::DOWN);
+  BOOST_CHECK(!isFailed);
+
+  face1->setState(FaceState::FAILED);
+  BOOST_CHECK(!isFailed);
+
+  face1->setState(FaceState::CLOSED);
+  BOOST_CHECK(isFailed);
+}
+
+BOOST_AUTO_TEST_CASE(SendReceive)
+{
+  auto face1w = make_shared<face::LpFaceWrapper>(make_unique<DummyLpFace>());
+  auto face1 = static_cast<DummyLpFace*>(face1w->getLpFace());
+
+  const size_t nInInterests = 192;
+  const size_t nInData = 91;
+  const size_t nInNacks = 29;
+  const size_t nOutInterests = 202;
+  const size_t nOutData = 128;
+  const size_t nOutNacks = 84;
+
+  size_t nReceivedInterests = 0;
+  size_t nReceivedData = 0;
+  size_t nReceivedNacks = 0;
+  face1w->onReceiveInterest.connect(bind([&nReceivedInterests] { ++nReceivedInterests; }));
+  face1w->onReceiveData.connect(bind([&nReceivedData] { ++nReceivedData; }));
+  face1w->onReceiveNack.connect(bind([&nReceivedNacks] { ++nReceivedNacks; }));
+
+  BOOST_CHECK_EQUAL(face1->getCounters().getNInInterests(), 0);
+  BOOST_CHECK_EQUAL(face1->getCounters().getNInDatas(), 0);
+  BOOST_CHECK_EQUAL(face1->getCounters().getNOutInterests(), 0);
+  BOOST_CHECK_EQUAL(face1->getCounters().getNOutDatas(), 0);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNInInterests(), 0);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNInDatas(), 0);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNOutInterests(), 0);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNOutDatas(), 0);
+  // There's no counters for NACK for now.
+
+  for (size_t i = 0; i < nInInterests; ++i) {
+    shared_ptr<Interest> interest = makeInterest("/JSQdqward4");
+    face1->receiveInterest(*interest);
+  }
+
+  for (size_t i = 0; i < nInData; ++i) {
+    shared_ptr<Data> data = makeData("/hT8FDigWn1");
+    face1->receiveData(*data);
+  }
+
+  for (size_t i = 0; i < nInNacks; ++i) {
+    lp::Nack nack = makeNack("/StnEVTj4Ex", 561, lp::NackReason::CONGESTION);
+    face1->receiveNack(nack);
+  }
+
+  for (size_t i = 0; i < nOutInterests; ++i) {
+    shared_ptr<Interest> interest = makeInterest("/XyUAFYQDmd");
+    face1w->sendInterest(*interest);
+  }
+
+  for (size_t i = 0; i < nOutData; ++i) {
+    shared_ptr<Data> data = makeData("/GigPEtPH6");
+    face1w->sendData(*data);
+  }
+
+  for (size_t i = 0; i < nOutNacks; ++i) {
+    lp::Nack nack = makeNack("/9xK6FbwIBM", 365, lp::NackReason::CONGESTION);
+    face1w->sendNack(nack);
+  }
+
+  BOOST_CHECK_EQUAL(face1->getCounters().getNInInterests(), nInInterests);
+  BOOST_CHECK_EQUAL(face1->getCounters().getNInDatas(), nInData);
+  BOOST_CHECK_EQUAL(face1->getCounters().getNOutInterests(), nOutInterests);
+  BOOST_CHECK_EQUAL(face1->getCounters().getNOutDatas(), nOutData);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNInInterests(), nInInterests);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNInDatas(), nInData);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNOutInterests(), nOutInterests);
+  BOOST_CHECK_EQUAL(face1w->getCounters().getNOutDatas(), nOutData);
+
+  BOOST_CHECK_EQUAL(nReceivedInterests, nInInterests);
+  BOOST_CHECK_EQUAL(nReceivedData, nInData);
+  BOOST_CHECK_EQUAL(nReceivedNacks, nInNacks);
+  BOOST_CHECK_EQUAL(face1->sentInterests.size(), nOutInterests);
+  BOOST_CHECK_EQUAL(face1->sentData.size(), nOutData);
+  BOOST_CHECK_EQUAL(face1->sentNacks.size(), nOutNacks);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace face
+} // namespace nfd