diff --git a/tests/unit/security/additional-description.t.cpp b/tests/unit/security/additional-description.t.cpp
new file mode 100644
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+++ b/tests/unit/security/additional-description.t.cpp
@@ -0,0 +1,103 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2020 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 "ndn-cxx/security/additional-description.hpp"
+
+#include "tests/boost-test.hpp"
+
+namespace ndn {
+namespace security {
+namespace tests {
+
+BOOST_AUTO_TEST_SUITE(Security)
+BOOST_AUTO_TEST_SUITE(TestAdditionalDescription)
+
+const uint8_t description[] = {
+  0xfd, 0x01, 0x02, 0x28,
+    0xfd, 0x02, 0x00, 0x10, // DescriptionEntry
+      0xfd, 0x02, 0x01, 0x04, // DescriptionKey
+        0x6b, 0x65, 0x79, 0x31, // "key1"
+      0xfd, 0x02, 0x02, 0x04, // DescriptionValue
+        0x76, 0x61, 0x6c, 0x31, // "val1"
+    0xfd, 0x02, 0x00, 0x10, // DescriptionEntry
+      0xfd, 0x02, 0x01, 0x04, // DescriptionKey
+        0x6b, 0x65, 0x79, 0x32, // "key2"
+      0xfd, 0x02, 0x02, 0x04, // DescriptionValue
+        0x76, 0x61, 0x6c, 0x32, // "val2"
+};
+
+const std::string text = "[(key1:val1), (key2:val2)]";
+
+BOOST_AUTO_TEST_CASE(Basic)
+{
+  AdditionalDescription aDescription;
+
+  aDescription.set("key2", "val2");
+  aDescription.set("key1", "val1");
+
+  BOOST_REQUIRE_NO_THROW(aDescription.get("key1"));
+  BOOST_REQUIRE_NO_THROW(aDescription.get("key2"));
+  BOOST_REQUIRE_THROW(aDescription.get("key3"), AdditionalDescription::Error);
+
+  BOOST_CHECK_EQUAL(aDescription.has("key1"), true);
+  BOOST_CHECK_EQUAL(aDescription.has("key2"), true);
+  BOOST_CHECK_EQUAL(aDescription.has("key3"), false);
+
+  auto val1 = aDescription.get("key1");
+  auto val2 = aDescription.get("key2");
+
+  BOOST_CHECK_EQUAL(val1, "val1");
+  BOOST_CHECK_EQUAL(val2, "val2");
+
+  auto it = aDescription.begin();
+  BOOST_CHECK_EQUAL(it->second, "val1");
+  it++;
+  BOOST_CHECK_EQUAL(it->second, "val2");
+  it++;
+  BOOST_CHECK(it == aDescription.end());
+
+  BOOST_CHECK_EQUAL_COLLECTIONS(aDescription.wireEncode().wire(),
+                                aDescription.wireEncode().wire() + aDescription.wireEncode().size(),
+                                description,
+                                description + sizeof(description));
+
+  BOOST_REQUIRE_NO_THROW(AdditionalDescription(Block(description, sizeof(description))));
+  AdditionalDescription aDescription2(Block(description, sizeof(description)));
+
+  BOOST_CHECK_EQUAL(aDescription2, aDescription);
+
+  AdditionalDescription aDescription3;
+  aDescription3.set("key3", "val3");
+  aDescription3.set("key2", "val2");
+
+  BOOST_CHECK_NE(aDescription2, aDescription3);
+
+  std::ostringstream os;
+  os << aDescription;
+  BOOST_CHECK_EQUAL(os.str(), text);
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestAdditionalDescription
+BOOST_AUTO_TEST_SUITE_END() // Security
+
+} // namespace tests
+} // namespace security
+} // namespace ndn