diff --git a/tests/unit-tests/protocol-detail.t.cpp b/tests/unit-tests/protocol-detail.t.cpp
new file mode 100644
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--- /dev/null
+++ b/tests/unit-tests/protocol-detail.t.cpp
@@ -0,0 +1,76 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2017-2020, Regents of the University of California.
+ *
+ * This file is part of ndncert, a certificate management system based on NDN.
+ *
+ * ndncert 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.
+ *
+ * ndncert 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 copies of the GNU General Public License along with
+ * ndncert, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndncert authors and contributors.
+ */
+
+#include "protocol-detail/info.hpp"
+#include "protocol-detail/probe.hpp"
+#include "protocol-detail/new-renew-revoke.hpp"
+#include "protocol-detail/challenge.hpp"
+#include "test-common.hpp"
+
+namespace ndn {
+namespace ndncert {
+namespace tests {
+
+BOOST_FIXTURE_TEST_SUITE(TestProtocolDetail, IdentityManagementTimeFixture)
+
+BOOST_AUTO_TEST_CASE(TestInfo)
+{
+  CaConfig config;
+  config.load("tests/unit-tests/config-files/config-ca-1");
+
+  const auto& identity = addIdentity("/test");
+  const auto& cert = identity.getDefaultKey().getDefaultCertificate();
+  auto encoded = INFO::encodeDataContent(config.m_caItem, cert);
+  auto decoded = INFO::decodeDataContent(encoded);
+  BOOST_CHECK_EQUAL(config.m_caItem.m_caPrefix, decoded.m_caPrefix);
+  BOOST_CHECK_EQUAL(config.m_caItem.m_caInfo, decoded.m_caInfo);
+  BOOST_CHECK_EQUAL(config.m_caItem.m_maxValidityPeriod, decoded.m_maxValidityPeriod);
+  BOOST_CHECK_EQUAL(*config.m_caItem.m_maxSuffixLength, *decoded.m_maxSuffixLength);
+  BOOST_CHECK_EQUAL(config.m_caItem.m_probeParameterKeys.size(), decoded.m_probeParameterKeys.size());
+  BOOST_CHECK_EQUAL(config.m_caItem.m_probeParameterKeys.front(), decoded.m_probeParameterKeys.front());
+  BOOST_CHECK_EQUAL(cert.wireEncode(), decoded.m_cert->wireEncode());
+}
+
+BOOST_AUTO_TEST_CASE(TestProbe)
+{
+  std::vector<std::tuple<std::string, std::string>> parameters;
+  parameters.push_back(std::make_tuple("email", "zhiyi@cs.ucla.edu"));
+  auto appParametersTlv = PROBE::encodeApplicationParameters(std::move(parameters));
+  auto decodedParameters = PROBE::decodeApplicationParameters(appParametersTlv);
+  BOOST_CHECK_EQUAL(std::get<0>(decodedParameters[0]), "email");
+  BOOST_CHECK_EQUAL(std::get<1>(decodedParameters[0]), "zhiyi@cs.ucla.edu");
+  BOOST_CHECK_EQUAL(decodedParameters.size(), 1);
+
+  CaConfig config;
+  config.load("tests/unit-tests/config-files/config-ca-5");
+  std::vector<Name> ids;
+  ids.push_back(Name("/example"));
+  auto contentTlv = PROBE::encodeDataContent(ids, 2, config.m_redirection);
+  std::vector<Name> decodedIds, decodedRedirectionItems;
+  PROBE::decodeDataContent(contentTlv, decodedIds, decodedRedirectionItems);
+  BOOST_CHECK_EQUAL(decodedIds[0], Name("/example"));
+  BOOST_CHECK_EQUAL(decodedRedirectionItems[0], config.m_redirection->at(0)->getFullName());
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestProtocolDetail
+
+}  // namespace tests
+}  // namespace ndncert
+}  // namespace ndn