added ability to turn off testing

Author: scharlton2

CMakeLists.txt

@@ -160,8 +160,11 @@ if(MSVC)
     CONFIGURATIONS Debug)
 endif()
 
-enable_testing()
-add_subdirectory(unittests_cgnsfile)
-add_subdirectory(unittest_lock)
-add_subdirectory(unittest_cg_open_modify)
-add_subdirectory(unittest_cg_open_read)
+include(CTest)
+
+if (BUILD_TESTING)
+  add_subdirectory(unittests_cgnsfile)
+  add_subdirectory(unittest_lock)
+  add_subdirectory(unittest_cg_open_modify)
+  add_subdirectory(unittest_cg_open_read)
+endif()