separate unittest folder

unittests/CatchRunner.cpp

@@ -0,0 +1,25 @@
+/**
+ * @file 	CatchRunner.cpp
+ * @brief 	Source file to compile catch framework.
+ * @details	All tests should be written in other files.
+ * For eclipse console output, install ANSI Escape in Console
+ * from the eclipse market place to get colored characters.
+ */
+
+#include "CatchRunner.h"
+
+#define CATCH_CONFIG_COLOUR_WINDOWS
+
+#include <catch2/catch_session.hpp>
+
+extern int customSetup();
+
+int main(int argc, char* argv[]) {
+  customSetup();
+
+  // Catch internal function call
+  int result = Catch::Session().run(argc, argv);
+
+  // global clean-up
+  return result;
+}