Added test case and setting Test configuration

qt6-after/qt6-migrated-legatus/cmake/MacroRTIDDSGen.cmake

@@ -50,6 +50,10 @@ MACRO(RTIDDSGEN srcList infile)
                      ARGS -E remove ${output_cxx}
                      COMMAND ${RTI_DDSGEN_EXECUTABLE}
                      ARGS -language "C++11"
+                     # Connext 7.7 defaults to the OMG IDL4_CPP mapping, which emits plain
+                     # aggregates with public data members. This codebase is written against
+                     # the accessor-based mapping that was the default in Connext <= 7.5.0.
+                     ARGS -standard DDS_PSM_Cxx
                      ARGS -unboundedSupport
                      ARGS -verbosity 2
                      ARGS -update typefiles