Add google-test project.

The code is not testing the hole written lib yet. Is a proof o concept.
We currently have a windows eclipse project using cygwin.

test/eclipse-cygwin/src/main.cpp

@@ -0,0 +1,30 @@
+/*!
+ * \file    test/main.cpp
+ *
+ * Copyright (C) 2018 Christos Choutouridis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <gtest.h>
+#include <iostream>
+
+GTEST_API_ int main(int argc, char **argv) {
+  std::cout << "Running tests from main.cpp\n";
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+
+
+