test_admin.py

    def _setup_changelist_queryset(self, params):
        request = self.factory.get("/", params)
        changelist = self._get_changelist(request, model, ma)
        return changelist.get_query_set(request)

    def _get_changelist(self, request, model, ma):
        args = self._get_changelist_args(request, Leilao, self.ma)
        return ChangeList(*args)
   
    def _get_changelist_args(self, request, model, ma):
        """
        Args necessários para instânciar o changelist do admin
        """
        args = (request, model, ma.list_display, ma.list_display_links,
            ma.list_filter, ma.date_hierarchy, ma.search_fields,
            ma.list_select_related, ma.list_per_page, 
            ma.list_max_show_all, ma.list_editable, ma)
        return args