How can i say GWTTesCase use web.xml configuration instead of servlet tags define inside *.gwt.xml?

[Saeed Zarinfam]

I understand that GWTTesCase does not use web.xml for test gwt widgets and use servlet tags define inside *.gwt.xml (module file).

I was wondering how can i define filter or listener or context-param or 'servlet init-param' for using in GWTTesCase or How can i say GWTTesCase use web.xml instead of servlet tags define inside *.gwt.xml (module file)? If my understanding about this subject is wrong please help me?

Thanks in advance.