modify parameter map tests for descriptors and add test cases

Signed-off-by: bpwilcox <[email protected]>

Author: bpwilcox

rclcpp/CMakeLists.txt

@@ -319,10 +319,10 @@ if(BUILD_TESTING)
     )
     target_link_libraries(test_parameter ${PROJECT_NAME})
   endif()
-#  ament_add_gtest(test_parameter_map test/test_parameter_map.cpp)
-#  if(TARGET test_parameter_map)
-#    target_link_libraries(test_parameter_map ${PROJECT_NAME})
-#  endif()
+  ament_add_gtest(test_parameter_map test/test_parameter_map.cpp)
+  if(TARGET test_parameter_map)
+    target_link_libraries(test_parameter_map ${PROJECT_NAME})
+  endif()
   ament_add_gtest(test_publisher test/test_publisher.cpp)
   if(TARGET test_publisher)
     ament_target_dependencies(test_publisher