use ctest for testing

CMakeLists.txt

@@ -270,9 +270,10 @@ if (USE_WS OR USE_TEST)
   FetchContent_MakeAvailable(spdlog)
 
   if (USE_WS)
-      add_subdirectory(ws)
+    add_subdirectory(ws)
   endif()
   if (USE_TEST)
-      add_subdirectory(test)
+    enable_testing()
+    add_subdirectory(test)
   endif()
 endif()