add policy checker

Change-Id: I90c50d15b1d9d97832c66ce90e39524729f12a0f
diff --git a/tests/core/identity-fixture.hpp b/tests/core/identity-fixture.hpp
new file mode 100644
index 0000000..3ea68f6
--- /dev/null
+++ b/tests/core/identity-fixture.hpp
@@ -0,0 +1,76 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014,  Regents of the University of California
+ *
+ * This file is part of NSL (NDN Signature Logger).
+ * See AUTHORS.md for complete list of NSL authors and contributors.
+ *
+ * NSL 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.
+ *
+ * NSL 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 a copy of the GNU General Public License along with
+ * NSL, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of nsl authors and contributors.
+ */
+
+#ifndef NSL_TESTS_IDENTITY_FIXTURE_HPP
+#define NSL_TESTS_IDENTITY_FIXTURE_HPP
+
+#include "unit-test-time-fixture.hpp"
+#include <ndn-cxx/security/key-chain.hpp>
+#include <vector>
+
+#include <boost/filesystem.hpp>
+
+namespace nsl {
+namespace tests {
+
+class IdentityFixture : public UnitTestTimeFixture
+{
+public:
+  IdentityFixture()
+    : m_keyChainTmpPath(boost::filesystem::path(TEST_KEYCHAIN_PATH) / "IdentityFixture")
+    , m_keyChain(std::string("pib-sqlite3:").append(m_keyChainTmpPath.string()),
+                 std::string("tpm-file:").append(m_keyChainTmpPath.string()))
+  {
+  }
+
+  ~IdentityFixture()
+  {
+    for (const auto& identity : m_identities) {
+      m_keyChain.deleteIdentity(identity);
+    }
+
+    boost::filesystem::remove_all(m_keyChainTmpPath);
+  }
+  /// @brief add identity, return true if succeed.
+  bool
+  addIdentity(const Name& identity,
+              const ndn::KeyParams& params = ndn::KeyChain::DEFAULT_KEY_PARAMS)
+  {
+    try {
+      m_keyChain.createIdentity(identity, params);
+      m_identities.push_back(identity);
+      return true;
+    }
+    catch (std::runtime_error&) {
+      return false;
+    }
+  }
+
+protected:
+  boost::filesystem::path m_keyChainTmpPath;
+  ndn::KeyChain m_keyChain;
+  std::vector<Name> m_identities;
+};
+
+} // namespace tests
+} // namespace nsl
+
+#endif // NSL_TESTS_IDENTITY_FIXTURE_HPP