[VOL-1787] :
This commit sets up a unit-test framework for openolt
agent based on gtest, gmock and c-mock utilities.
A sample unit-test case to test EnableOlt success case is also
added. More test cases will be added in future commit.

Change-Id: If020be489a04d97df5fcbc15e9207deeee2fcfac
diff --git a/agent/test/src/main_test.cc b/agent/test/src/main_test.cc
new file mode 100644
index 0000000..7f04e9c
--- /dev/null
+++ b/agent/test/src/main_test.cc
@@ -0,0 +1,23 @@
+/*
+    Copyright (C) 2018 Open Networking Foundation
+
+    This program 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.
+
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "gtest/gtest.h"
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}