lsa: make base class abstract

refs: #4353

Change-Id: If95c1689727f541c123623d21aec78ab8bdd58e6
diff --git a/tests/mocks/lsa.hpp b/tests/mocks/lsa.hpp
new file mode 100644
index 0000000..c447384
--- /dev/null
+++ b/tests/mocks/lsa.hpp
@@ -0,0 +1,51 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2017,  The University of Memphis,
+ *                           Regents of the University of California,
+ *                           Arizona Board of Regents.
+ *
+ * This file is part of NLSR (Named-data Link State Routing).
+ * See AUTHORS.md for complete list of NLSR authors and contributors.
+ *
+ * NLSR 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.
+ *
+ * NLSR 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
+ * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#ifndef NLSR_TESTS_MOCKS_LSA_HPP
+#define NLSR_TESTS_MOCKS_LSA_HPP
+
+#include "src/lsa.hpp"
+
+#include <boost/tokenizer.hpp>
+#include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
+
+namespace nlsr {
+namespace test {
+
+class MockLsa : public Lsa
+{
+public:
+  MockLsa()
+  {
+  }
+
+  std::string
+  getData() const override;
+
+  bool
+  initializeFromContent(const std::string& content) override;
+};
+
+} // namespace test
+} // namespace nlsr
+
+#endif // NLSR_TESTS_MOCKS_LSA_HPP