Adding DataProducer class to produce and encrypt data packets.

Change-Id: I147164a1517f1f6f24536959bc572a6d777c15b0
refs: #3016
diff --git a/tests/unit-tests/producer-db.t.cpp b/tests/unit-tests/producer-db.t.cpp
new file mode 100644
index 0000000..bcf09e0
--- /dev/null
+++ b/tests/unit-tests/producer-db.t.cpp
@@ -0,0 +1,115 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2015,  Regents of the University of California
+ *
+ * This file is part of ndn-group-encrypt (Group-based Encryption Protocol for NDN).
+ * See AUTHORS.md for complete list of ndn-group-encrypt authors and contributors.
+ *
+ * ndn-group-encrypt 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.
+ *
+ * ndn-group-encrypt 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
+ * ndn-group-encrypt, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @author Prashanth Swaminathan <prashanthsw@gmail.com>
+ */
+
+#include "producer-db.hpp"
+#include "algo/aes.hpp"
+#include "boost-test.hpp"
+
+#include <boost/filesystem.hpp>
+
+namespace ndn {
+namespace gep {
+namespace tests {
+
+using time::system_clock;
+
+class ProducerDBFixture
+{
+public:
+  ProducerDBFixture()
+    : tmpPath(boost::filesystem::path(TMP_TESTS_PATH))
+  {
+    boost::filesystem::create_directories(tmpPath);
+  }
+
+  ~ProducerDBFixture()
+  {
+    boost::filesystem::remove_all(tmpPath);
+  }
+
+public:
+  boost::filesystem::path tmpPath;
+};
+
+BOOST_FIXTURE_TEST_SUITE(TestProducerDB, ProducerDBFixture)
+
+BOOST_AUTO_TEST_CASE(DatabaseFunctions)
+{
+  // construction
+  std::string dbDir = tmpPath.c_str();
+  dbDir += "/test.db";
+  ProducerDB db(dbDir);
+
+  // create member
+  RandomNumberGenerator rng;
+  AesKeyParams params(128);
+  Buffer keyBuf1 = algo::Aes::generateKey(rng, params).getKeyBits();
+  Buffer keyBuf2 = algo::Aes::generateKey(rng, params).getKeyBits();
+
+  system_clock::TimePoint point1(time::fromIsoString("20150101T100000"));
+  system_clock::TimePoint point2(time::fromIsoString("20150102T100000"));
+  system_clock::TimePoint point3(time::fromIsoString("20150103T100000"));
+  system_clock::TimePoint point4(time::fromIsoString("20150104T100000"));
+
+  // add keys into the database
+  BOOST_CHECK_NO_THROW(db.addContentKey(point1, keyBuf1));
+  BOOST_CHECK_NO_THROW(db.addContentKey(point2, keyBuf1));
+  BOOST_CHECK_NO_THROW(db.addContentKey(point3, keyBuf2));
+
+  // throw exception when adding a key to an existing timeslot
+  BOOST_CHECK_THROW(db.addContentKey(point1, keyBuf1), ProducerDB::Error);
+
+  // has function
+  BOOST_CHECK_EQUAL(db.hasContentKey(point1), true);
+  BOOST_CHECK_EQUAL(db.hasContentKey(point2), true);
+  BOOST_CHECK_EQUAL(db.hasContentKey(point3), true);
+  BOOST_CHECK_EQUAL(db.hasContentKey(point4), false);
+
+  // get content key
+  Buffer keyResult = db.getContentKey(point1);
+  BOOST_CHECK_EQUAL_COLLECTIONS(keyResult.begin(),
+                                keyResult.end(),
+                                keyBuf1.begin(),
+                                keyBuf1.end());
+
+  keyResult = db.getContentKey(point3);
+  BOOST_CHECK_EQUAL_COLLECTIONS(keyResult.begin(),
+                                keyResult.end(),
+                                keyBuf2.begin(),
+                                keyBuf2.end());
+
+  // throw exception when there is no such timeslot in database
+  BOOST_CHECK_THROW(db.getContentKey(point4), ProducerDB::Error);
+
+  // delete content key
+  BOOST_CHECK_EQUAL(db.hasContentKey(point1), true);
+  db.deleteContentKey(point1);
+  BOOST_CHECK_EQUAL(db.hasContentKey(point1), false);
+
+  // delete at a non-existing timeslot
+  BOOST_CHECK_NO_THROW(db.deleteContentKey(point4));
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace gep
+} // namespace ndn