security: Add transformation sink/source

Change-Id: I2698f79f639c2bd7c3ce2e00f48be634dc4c983d
Refs: #3009
diff --git a/tests/unit-tests/security/transform/step-source.t.cpp b/tests/unit-tests/security/transform/step-source.t.cpp
new file mode 100644
index 0000000..321a3dc
--- /dev/null
+++ b/tests/unit-tests/security/transform/step-source.t.cpp
@@ -0,0 +1,81 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2016 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#include "security/transform/step-source.hpp"
+#include "security/transform/stream-sink.hpp"
+
+#include "boost-test.hpp"
+
+namespace ndn {
+namespace security {
+namespace transform {
+namespace tests {
+
+BOOST_AUTO_TEST_SUITE(Security)
+BOOST_AUTO_TEST_SUITE(Transform)
+BOOST_AUTO_TEST_SUITE(TestStepSource)
+
+BOOST_AUTO_TEST_CASE(Basic)
+{
+  std::string input =
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567"
+    "0123456701234567012345670123456701234567012345670123456701234567";
+  const uint8_t* buf = reinterpret_cast<const uint8_t*>(input.data());
+
+  std::stringstream os;
+  StepSource ss;
+  ss >> streamSink(os);
+  BOOST_CHECK_EQUAL(ss.write(buf, 320), 320);
+  BOOST_CHECK_EQUAL(ss.write(buf + 320, 320), 320);
+  BOOST_CHECK_EQUAL(ss.write(buf + 640, 320), 320);
+  BOOST_CHECK_EQUAL(ss.write(buf + 960, 320), 320);
+  ss.end();
+  BOOST_REQUIRE_THROW(ss.write(buf + 960, 320), transform::Error);
+  std::string output = os.str();
+  BOOST_CHECK_EQUAL(input, output);
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestStepSource
+BOOST_AUTO_TEST_SUITE_END() // Transform
+BOOST_AUTO_TEST_SUITE_END() // Security
+
+} // namespace tests
+} // namespace transform
+} // namespace security
+} // namespace ndn