publisher: add LSDB dataset publishers

refs #2280

Change-Id: Ifb1920ef9b807610890b0d0a04f24141d39f011d
diff --git a/tests/publisher/test-segment-publisher.cpp b/tests/publisher/test-segment-publisher.cpp
new file mode 100644
index 0000000..8cc8dde
--- /dev/null
+++ b/tests/publisher/test-segment-publisher.cpp
@@ -0,0 +1,170 @@
+/* -*- 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 "publisher/segment-publisher.hpp"
+
+#include "../boost-test.hpp"
+
+#include <ndn-cxx/encoding/tlv.hpp>
+#include <ndn-cxx/util/dummy-client-face.hpp>
+
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/vector.hpp>
+
+namespace nlsr {
+namespace tests {
+
+template<int64_t N=10000>
+class TestSegmentPublisher : public SegmentPublisher<ndn::util::DummyClientFace>
+{
+public:
+  TestSegmentPublisher(ndn::util::DummyClientFace& face,
+                       const ndn::Name& prefix,
+                       ndn::KeyChain& keyChain,
+                       const ndn::time::milliseconds freshnessPeriod)
+    : SegmentPublisher(face, prefix, keyChain, freshnessPeriod)
+    , m_totalPayloadLength(0)
+  {
+
+  }
+
+  virtual
+  ~TestSegmentPublisher()
+  {
+  }
+
+  uint16_t
+  getLimit() const
+  {
+    return N;
+  }
+
+  size_t
+  getTotalPayloadLength() const
+  {
+    return m_totalPayloadLength;
+  }
+
+protected:
+
+  virtual size_t
+  generate(ndn::EncodingBuffer& outBuffer)
+  {
+    size_t totalLength = 0;
+    for (int64_t i = 0; i < N; i++)
+      {
+        totalLength += ndn::prependNonNegativeIntegerBlock(outBuffer, ndn::tlv::Content, i);
+      }
+    m_totalPayloadLength += totalLength;
+    return totalLength;
+  }
+
+protected:
+  size_t m_totalPayloadLength;
+};
+
+template<int64_t N>
+class SegmentPublisherFixture
+{
+public:
+  SegmentPublisherFixture()
+    : m_face(ndn::util::makeDummyClientFace())
+    , m_expectedFreshnessPeriod(ndn::time::milliseconds(111))
+    , m_publisher(*m_face, "/localhost/nfd/SegmentPublisherFixture",
+                  m_keyChain, m_expectedFreshnessPeriod)
+  {
+  }
+
+  void
+  validate(const ndn::Data& data)
+  {
+    BOOST_CHECK_EQUAL(data.getFreshnessPeriod(), m_expectedFreshnessPeriod);
+
+    ndn::Block payload = data.getContent();
+
+    m_buffer.appendByteArray(payload.value(), payload.value_size());
+
+    // uint64_t segmentNo = data.getName()[-1].toSegment();
+    if (data.getFinalBlockId() != data.getName()[-1])
+      {
+        return;
+      }
+
+    // wrap data in a single Content TLV for easy parsing
+    m_buffer.prependVarNumber(m_buffer.size());
+    m_buffer.prependVarNumber(ndn::tlv::Content);
+
+    BOOST_TEST_CHECKPOINT("creating parser");
+    ndn::Block parser(m_buffer.buf(), m_buffer.size());
+    BOOST_TEST_CHECKPOINT("parsing aggregated response");
+    parser.parse();
+
+    BOOST_REQUIRE_EQUAL(parser.elements_size(), m_publisher.getLimit());
+
+    uint64_t expectedNo = m_publisher.getLimit() - 1;
+    for (ndn::Block::element_const_iterator i = parser.elements_begin();
+         i != parser.elements_end();
+         ++i)
+      {
+        uint64_t number = readNonNegativeInteger(*i);
+        BOOST_REQUIRE_EQUAL(number, expectedNo);
+        --expectedNo;
+      }
+  }
+
+protected:
+  ndn::shared_ptr<ndn::util::DummyClientFace> m_face;
+  const ndn::time::milliseconds m_expectedFreshnessPeriod;
+  TestSegmentPublisher<N> m_publisher;
+  ndn::EncodingBuffer m_buffer;
+  ndn::KeyChain m_keyChain;
+};
+
+using boost::mpl::int_;
+typedef boost::mpl::vector<int_<10000>, int_<100>, int_<10>, int_<0> > DatasetSizes;
+
+BOOST_AUTO_TEST_SUITE(PublisherTestSegmentPublisher)
+
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(Generate, T, DatasetSizes, SegmentPublisherFixture<T::value>)
+{
+  this->m_publisher.publish();
+  this->m_face->processEvents();
+
+  size_t nSegments = this->m_publisher.getTotalPayloadLength() /
+                     this->m_publisher.getMaxSegmentSize();
+  if (this->m_publisher.getTotalPayloadLength() % this->m_publisher.getMaxSegmentSize() != 0 ||
+      nSegments == 0)
+    ++nSegments;
+
+  BOOST_CHECK_EQUAL(this->m_face->sentDatas.size(), nSegments);
+  for (const ndn::Data& data : this->m_face->sentDatas) {
+    this->validate(data);
+  }
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace nlsr