diff --git a/tests/unit-tests/state-server.t.cpp b/tests/unit-tests/state-server.t.cpp
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+++ b/tests/unit-tests/state-server.t.cpp
@@ -0,0 +1,277 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2017, Regents of the University of California.
+ *
+ * This file is part of ChronoShare, a decentralized file sharing application over NDN.
+ *
+ * ChronoShare 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.
+ *
+ * ChronoShare 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
+ * ChronoShare, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ChronoShare authors and contributors.
+ */
+
+#include "state-server.hpp"
+#include "sync-core.hpp"
+#include "object-manager.hpp"
+#include "action-log.hpp"
+
+#include "test-common.hpp"
+#include <ndn-cxx/util/dummy-client-face.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+
+using boost::property_tree::ptree;
+using boost::property_tree::read_json;
+
+namespace ndn {
+namespace chronoshare {
+namespace tests {
+
+namespace fs = boost::filesystem;
+
+_LOG_INIT(Test.StateServer);
+
+class TestStateServerFixture : public IdentityManagementTimeFixture
+{
+public:
+  TestStateServerFixture()
+    //: face(m_io, m_keyChain, {true, true})
+    : localName("/yukai")
+    , tmpdir(fs::unique_path(UNIT_TEST_CONFIG_PATH))
+    , shareFolderName("sharefolder")
+    , root("test-server-and-fetch")
+    , filename("file.txt")
+    , abf(root / filename)
+    , face(m_io, m_keyChain, {true, true})
+  {
+    if (exists(root)) {
+      remove_all(root);
+    }
+
+    syncLog = make_shared<SyncLog>(root, localName);
+
+    std::string words = "this is the test msg";
+
+
+    manager = make_unique<ObjectManager>(face, m_keyChain, root, "test-chronoshare");
+    actionLog = std::make_shared<ActionLog>(face, root, syncLog,
+                                                 "top-secret", name::Component("test-chronoshare"),
+                                                 ActionLog::OnFileAddedOrChangedCallback(),
+                                                 bind([&] { remove(abf); }));
+
+    server = std::make_shared<StateServer>(face, actionLog, root, localName,
+                                           shareFolderName, name::Component("test-chronoshare"),
+                                           *manager, m_keyChain, time::seconds(5));
+
+    std::ofstream ofs;
+    ofs.open(abf.string().c_str());
+    ofs << words;
+    ofs.close();
+
+    fileSize = fs::file_size(abf);
+
+    _LOG_DEBUG("absolutePath: " << abf << " localUserName: " << localName);
+    tie(hash, seg_num) = manager->localFileToObjects(abf, localName);
+
+    BOOST_REQUIRE_MESSAGE(fs::exists(abf), " failed to create the file");
+
+    actionLog->AddLocalActionUpdate(filename.generic_string(), *hash,
+                                    std::time(nullptr), 0644, seg_num);
+
+    actionLog->AddLocalActionUpdate("sharefolder/file.txt",
+                                    *fromHex("2ff3ab223a23c2435519eef13daabf8576dceffc62618a431715aaf6eea2bf1c"),
+                                    std::time(nullptr), 0755, 10);
+
+    syncLog->RememberStateInStateLog();
+
+    actionLog->AddLocalActionDelete("file.txt");
+
+    BOOST_REQUIRE_MESSAGE(!fs::exists(abf), " failed to delete the file");
+
+    syncLog->RememberStateInStateLog();
+  }
+
+  ~TestStateServerFixture()
+  {
+    if (exists(root)) {
+      remove_all(root);
+    }
+  }
+
+public:
+  //util::DummyClientFace& face;
+  Name localName;
+  fs::path tmpdir;
+
+  std::string shareFolderName;
+  fs::path root;
+  fs::path filename;
+  fs::path abf;
+
+  util::DummyClientFace face;
+
+  shared_ptr<SyncLog> syncLog;
+  shared_ptr<ActionLog> actionLog;
+  shared_ptr<StateServer> server;
+  unique_ptr<ObjectManager> manager;
+
+  int seg_num;
+  ConstBufferPtr hash;
+
+  uintmax_t fileSize;
+};
+
+BOOST_FIXTURE_TEST_SUITE(TestStateServer, TestStateServerFixture)
+
+BOOST_AUTO_TEST_CASE(TestStateServer)
+{
+  Interest interest1(
+    Name("/localhop").append(localName).append("test-chronoshare").append(shareFolderName)
+                     .append("info").append("files").append("folder").appendNumber(0));
+
+  _LOG_DEBUG("interest1:"<<interest1.toUri());
+
+  advanceClocks(time::milliseconds(10), 1000);
+
+  BOOST_CHECK_EQUAL(dynamic_cast<util::DummyClientFace*>(&face)->sentData.size(),1);
+  dynamic_cast<util::DummyClientFace*>(&face)->receive(interest1);
+
+  advanceClocks(time::milliseconds(10), 1000);
+
+  BOOST_CHECK_EQUAL(dynamic_cast<util::DummyClientFace*>(&face)->sentData.size(),2);
+
+  Data data1 = dynamic_cast<util::DummyClientFace*>(&face)->sentData.at(1);
+
+  BOOST_CHECK_EQUAL(data1.getName(),
+                    "/localhop/yukai/test-chronoshare/sharefolder/info/files/folder/%00");
+
+  // Read json.
+  ptree pt1;
+  std::istringstream is1(std::string(data1.getContent().value(),
+                                     data1.getContent().value() + data1.getContent().value_size()));
+  read_json(is1, pt1);
+  for (ptree::value_type &file : pt1.get_child("files"))
+  {
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("filename"), "sharefolder/file.txt");
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("version"), "0");
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("owner.userName"), "/yukai");
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("owner.seqNo"), "2");
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("hash"),
+        "2FF3AB223A23C2435519EEF13DAABF8576DCEFFC62618A431715AAF6EEA2BF1C");
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("chmod"), "0755");
+      BOOST_CHECK_EQUAL(file.second.get<std::string>("segNum"), "10");
+  }
+
+  // <PREFIX_INFO>/"actions"/"folder|file"/<folder|file>/<offset>  get list of all actions
+  Interest interest2(
+    Name("/localhop").append(localName).append("test-chronoshare")
+                     .append(shareFolderName).append("info").append("actions")
+                     .append("file").append("file.txt").appendNumber(0));
+
+  _LOG_DEBUG("interest2:"<<interest2.toUri());
+  dynamic_cast<util::DummyClientFace*>(&face)->receive(interest2);
+
+  advanceClocks(time::milliseconds(10), 1000);
+
+  BOOST_CHECK_EQUAL(dynamic_cast<util::DummyClientFace*>(&face)->sentData.size(),3);
+
+  Data data2 = dynamic_cast<util::DummyClientFace*>(&face)->sentData.at(2);
+
+  BOOST_CHECK_EQUAL(data2.getName(),
+                    "/localhop/yukai/test-chronoshare/sharefolder/info/actions/file/file.txt/%00");
+
+  // Read json.
+  ptree pt2;
+  std::istringstream is2(std::string(data2.getContent().value(),
+                                     data2.getContent().value() + data2.getContent().value_size()));
+  read_json(is2, pt2);
+  for (ptree::value_type &action : pt2.get_child("actions"))
+  {
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("id.userName"), "/yukai");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("filename"), "file.txt");
+    if(action.second.get<std::string>("version") == "1")
+    {
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("id.seqNo"), "3");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("version"), "1");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("action"), "DELETE");
+    }
+    else {
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("id.seqNo"), "1");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("version"), "0");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("action"), "UPDATE");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("update.hash"),
+        "FC0D526AF0BA965EA6BCD5E5BE281B0F5497BBAC2850DFA7C04D31D383E02D0B");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("update.chmod"), "0644");
+      BOOST_CHECK_EQUAL(action.second.get<std::string>("update.segNum"), "1");
+
+    }
+  }
+
+  Interest interest3(
+    Name("/localhop").append(localName).append("test-chronoshare")
+                     .append(shareFolderName).append("info").append("actions")
+                     .append("folder").append("sharefolder").appendNumber(0));
+
+  _LOG_DEBUG("interest3:"<<interest3.toUri());
+  dynamic_cast<util::DummyClientFace*>(&face)->receive(interest3);
+
+  advanceClocks(time::milliseconds(10), 1000);
+
+  BOOST_CHECK_EQUAL(dynamic_cast<util::DummyClientFace*>(&face)->sentData.size(),4);
+
+  Data data3 = dynamic_cast<util::DummyClientFace*>(&face)->sentData.at(3);
+
+  BOOST_CHECK_EQUAL(data3.getName(),
+                    "/localhop/yukai/test-chronoshare/sharefolder/info/actions/folder/sharefolder/%00");
+
+  ptree pt3;
+  std::istringstream is3(std::string(data3.getContent().value(),
+                                     data3.getContent().value() + data3.getContent().value_size()));
+  read_json(is3, pt3);
+  //std::cout<<"get files"<<pt2.get<std::string>("files..")<<std::endl;
+  for (ptree::value_type &action : pt3.get_child("actions"))
+  {
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("id.userName"), "/yukai");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("id.seqNo"), "2");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("filename"), "sharefolder/file.txt");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("version"), "0");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("action"), "UPDATE");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("update.hash"),
+      "2FF3AB223A23C2435519EEF13DAABF8576DCEFFC62618A431715AAF6EEA2BF1C");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("update.chmod"), "0755");
+    BOOST_CHECK_EQUAL(action.second.get<std::string>("update.segNum"), "10");
+  }
+
+  Interest interest4(
+    Name("/localhop").append(localName).append("test-chronoshare").append(shareFolderName)
+                     .append("cmd").append("restore").append("file").append("file.txt")
+                     .appendNumber(0).append(name::Component(hash)));
+
+  dynamic_cast<util::DummyClientFace*>(&face)->receive(interest4);
+
+  advanceClocks(time::milliseconds(10), 1000);
+
+  BOOST_CHECK_EQUAL(dynamic_cast<util::DummyClientFace*>(&face)->sentData.size(),5);
+
+  Data data4 = dynamic_cast<util::DummyClientFace*>(&face)->sentData.at(4);
+
+  _LOG_DEBUG(std::string(data4.getContent().value(),
+                         data4.getContent().value()+data4.getContent().value_size()));
+
+  BOOST_REQUIRE_MESSAGE(fs::exists(abf), " failed to restore the file");
+  BOOST_CHECK_EQUAL(fileSize, fs::file_size(abf));
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace chronoshare
+} // namespace ndn
\ No newline at end of file