Added test case and setting Test configuration

qt6-after/qt6-migrated-legatus/Lts/DDS/Generic/dynamic_data_reader.h

@@ -12,6 +12,7 @@
 #include <dds/topic/find.hpp>
 #include <rti/core/xtypes/DynamicDataImpl.hpp>
 #include <functional>
+#include <type_traits>
 
 namespace DDSGeneric
 {
@@ -309,6 +310,19 @@ class DynamicDataReader final
         callbackFunc(sample.data(), topicName, sample.info());
     }
 
+    template<typename C>
+    static bool isValid(const C& callbackFunc)
+    {
+        // Generic version for any type - checks if callable/non-null
+        // Use simple pointer check for function pointers, true for other types
+        if constexpr (std::is_pointer_v<C>)
+            return callbackFunc != nullptr;
+        else if constexpr (std::is_function_v<std::remove_pointer_t<C>>)
+            return callbackFunc != nullptr;
+        else
+            return true; // Assume valid for functor objects, std::function, etc.
+    }
+
     static bool isValid(const SubscriberCallback& callbackFunc)
     {
         return callbackFunc != nullptr;