diff --git a/tests/unit/security/pib/identity-container.t.cpp b/tests/unit/security/pib/identity-container.t.cpp
new file mode 100644
index 0000000..e821970
--- /dev/null
+++ b/tests/unit/security/pib/identity-container.t.cpp
@@ -0,0 +1,156 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2018 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/pib/identity-container.hpp"
+#include "security/pib/pib.hpp"
+#include "security/pib/pib-memory.hpp"
+
+#include "boost-test.hpp"
+#include "pib-data-fixture.hpp"
+
+namespace ndn {
+namespace security {
+namespace pib {
+namespace tests {
+
+using namespace ndn::security::tests;
+
+BOOST_AUTO_TEST_SUITE(Security)
+BOOST_AUTO_TEST_SUITE(Pib)
+BOOST_FIXTURE_TEST_SUITE(TestIdentityContainer, PibDataFixture)
+
+using pib::Pib;
+
+BOOST_AUTO_TEST_CASE(Basic)
+{
+  auto pibImpl = make_shared<PibMemory>();
+
+  // start with an empty container
+  IdentityContainer container(pibImpl);
+  BOOST_CHECK_EQUAL(container.size(), 0);
+  BOOST_CHECK_EQUAL(container.getLoadedIdentities().size(), 0);
+
+  // add the first identity
+  Identity identity11 = container.add(id1);
+  BOOST_CHECK_EQUAL(identity11.getName(), id1);
+  BOOST_CHECK_EQUAL(container.size(), 1);
+  BOOST_CHECK_EQUAL(container.getLoadedIdentities().size(), 1);
+  BOOST_CHECK(container.find(id1) != container.end());
+
+  // add the same identity again
+  Identity identity12 = container.add(id1);
+  BOOST_CHECK_EQUAL(identity12.getName(), id1);
+  BOOST_CHECK_EQUAL(container.size(), 1);
+  BOOST_CHECK_EQUAL(container.getLoadedIdentities().size(), 1);
+  BOOST_CHECK(container.find(id1) != container.end());
+
+  // add the second identity
+  Identity identity21 = container.add(id2);
+  BOOST_CHECK_EQUAL(identity21.getName(), id2);
+  BOOST_CHECK_EQUAL(container.size(), 2);
+  BOOST_CHECK_EQUAL(container.getLoadedIdentities().size(), 2);
+  BOOST_CHECK(container.find(id1) != container.end());
+  BOOST_CHECK(container.find(id2) != container.end());
+
+  // get identities
+  BOOST_REQUIRE_NO_THROW(container.get(id1));
+  BOOST_REQUIRE_NO_THROW(container.get(id2));
+  BOOST_CHECK_THROW(container.get(Name("/non-existing")), Pib::Error);
+
+  // check identity
+  Identity identity1 = container.get(id1);
+  Identity identity2 = container.get(id2);
+  BOOST_CHECK_EQUAL(identity1.getName(), id1);
+  BOOST_CHECK_EQUAL(identity2.getName(), id2);
+
+  // create another container from the same PibImpl
+  // cache should be empty
+  IdentityContainer container2(pibImpl);
+  BOOST_CHECK_EQUAL(container2.size(), 2);
+  BOOST_CHECK_EQUAL(container2.getLoadedIdentities().size(), 0);
+
+  // get key, cache should be filled
+  BOOST_REQUIRE_NO_THROW(container2.get(id1));
+  BOOST_CHECK_EQUAL(container2.size(), 2);
+  BOOST_CHECK_EQUAL(container2.getLoadedIdentities().size(), 1);
+
+  BOOST_REQUIRE_NO_THROW(container2.get(id2));
+  BOOST_CHECK_EQUAL(container2.size(), 2);
+  BOOST_CHECK_EQUAL(container2.getLoadedIdentities().size(), 2);
+
+  // remove a key
+  container2.remove(id1);
+  BOOST_CHECK_EQUAL(container2.size(), 1);
+  BOOST_CHECK_EQUAL(container2.getLoadedIdentities().size(), 1);
+  BOOST_CHECK(container2.find(id1) == container2.end());
+  BOOST_CHECK(container2.find(id2) != container2.end());
+
+  // remove another key
+  container2.remove(id2);
+  BOOST_CHECK_EQUAL(container2.size(), 0);
+  BOOST_CHECK_EQUAL(container2.getLoadedIdentities().size(), 0);
+  BOOST_CHECK(container2.find(id2) == container2.end());
+
+}
+
+BOOST_AUTO_TEST_CASE(Iterator)
+{
+  auto pibImpl = make_shared<PibMemory>();
+  IdentityContainer container(pibImpl);
+  container.add(id1);
+  container.add(id2);
+
+  std::set<Name> idNames;
+  idNames.insert(id1);
+  idNames.insert(id2);
+
+  IdentityContainer::const_iterator it = container.begin();
+  std::set<Name>::const_iterator testIt = idNames.begin();
+  BOOST_CHECK_EQUAL((*it).getName(), *testIt);
+  it++;
+  testIt++;
+  BOOST_CHECK_EQUAL((*it).getName(), *testIt);
+  ++it;
+  testIt++;
+  BOOST_CHECK(it == container.end());
+
+  size_t count = 0;
+  testIt = idNames.begin();
+  for (const auto& identity : container) {
+    BOOST_CHECK_EQUAL(identity.getName(), *testIt);
+    testIt++;
+    count++;
+  }
+  BOOST_CHECK_EQUAL(count, 2);
+
+  BOOST_CHECK(IdentityContainer::const_iterator() == IdentityContainer::const_iterator());
+  BOOST_CHECK(IdentityContainer::const_iterator() == container.end());
+  BOOST_CHECK(container.end() == IdentityContainer::const_iterator());
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestIdentityContainer
+BOOST_AUTO_TEST_SUITE_END() // Pib
+BOOST_AUTO_TEST_SUITE_END() // Security
+
+} // namespace tests
+} // namespace pib
+} // namespace security
+} // namespace ndn