diff --git a/tests/unit-tests/ca-memory.t.cpp b/tests/unit-tests/ca-memory.t.cpp
new file mode 100644
index 0000000..a717e31
--- /dev/null
+++ b/tests/unit-tests/ca-memory.t.cpp
@@ -0,0 +1,125 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2017, 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 "identity-management-fixture.hpp"
+#include "ca-detail/ca-memory.hpp"
+#include "ca-detail/ca-sqlite.hpp"
+
+namespace ndn {
+namespace ndncert {
+namespace tests {
+
+BOOST_FIXTURE_TEST_SUITE(TestCaMemory, IdentityManagementV2TimeFixture)
+
+BOOST_AUTO_TEST_CASE(Initialization)
+{
+  BOOST_CHECK_NO_THROW(CaMemory storage);
+}
+
+BOOST_AUTO_TEST_CASE(CertificateOperations)
+{
+  CaMemory storage;
+
+  auto identity1 = addIdentity(Name("/ndn/site1"));
+  auto key1 = identity1.getDefaultKey();
+  auto cert1 = key1.getDefaultCertificate();
+
+  // add operation
+  BOOST_CHECK_NO_THROW(storage.addCertificate("123", cert1));
+
+  // get operation
+  BOOST_CHECK_EQUAL(storage.getCertificate("123"), cert1);
+
+  // list operation
+  auto allCerts = storage.listAllIssuedCertificates();
+  BOOST_CHECK_EQUAL(allCerts.size(), 1);
+
+  auto identity2 = addIdentity(Name("/ndn/site2"));
+  auto key2 = identity2.getDefaultKey();
+  auto cert2 = key2.getDefaultCertificate();
+  storage.addCertificate("456", cert2);
+
+  allCerts = storage.listAllIssuedCertificates();
+  BOOST_CHECK_EQUAL(allCerts.size(), 2);
+
+  BOOST_CHECK_NO_THROW(storage.deleteCertificate("123"));
+
+  allCerts = storage.listAllIssuedCertificates();
+  BOOST_CHECK_EQUAL(allCerts.size(), 1);
+
+  auto identity3 = addIdentity(Name("/ndn/site3"));
+  auto key3 = identity3.getDefaultKey();
+  auto cert3 = key3.getDefaultCertificate();
+
+  // update operation
+  BOOST_CHECK_NO_THROW(storage.updateCertificate("456", cert3));
+  BOOST_CHECK_EQUAL(storage.getCertificate("456"), cert3);
+}
+
+BOOST_AUTO_TEST_CASE(RequestOperations)
+{
+  CaMemory storage;
+
+  auto identity1 = addIdentity(Name("/ndn/site1"));
+  auto key1 = identity1.getDefaultKey();
+  auto cert1 = key1.getDefaultCertificate();
+
+  // add operation
+  CertificateRequest request1(Name("/ndn/site1"), "123", cert1);
+  BOOST_CHECK_NO_THROW(storage.addRequest(request1));
+
+  // get operation
+  auto result = storage.getRequest("123");
+  BOOST_CHECK_EQUAL(request1.getCert(), result.getCert());
+  BOOST_CHECK_EQUAL(request1.getStatus(), result.getStatus());
+  BOOST_CHECK_EQUAL(request1.getCaName(), result.getCaName());
+
+  JsonSection json;
+  json.put("code", "1234");
+
+  // update operation
+  CertificateRequest request2(Name("/ndn/site1"), "123", "need-verify", "EMAIL",
+                              CaSqlite::convertJson2String(json), cert1);
+  storage.updateRequest(request2);
+  result = storage.getRequest("123");
+  BOOST_CHECK_EQUAL(request2.getCert(), result.getCert());
+  BOOST_CHECK_EQUAL(request2.getStatus(), result.getStatus());
+  BOOST_CHECK_EQUAL(request2.getCaName(), result.getCaName());
+
+  auto identity2 = addIdentity(Name("/ndn/site2"));
+  auto key2 = identity2.getDefaultKey();
+  auto cert2 = key2.getDefaultCertificate();
+  CertificateRequest request3(Name("/ndn/site2"), "456", cert2);
+  storage.addRequest(request3);
+
+  // list operation
+  auto allRequests = storage.listAllRequests();
+  BOOST_CHECK_EQUAL(allRequests.size(), 2);
+
+  storage.deleteRequest("456");
+  allRequests = storage.listAllRequests();
+  BOOST_CHECK_EQUAL(allRequests.size(), 1);
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestCaModule
+
+} // namespace tests
+} // namespace ndncert
+} // namespace ndn