Improve test for sachsen module
Improve test for sachsen module

RouxRC/weboob,willprice/weboob,nojhan/weboob-devel,RouxRC/weboob,sputnick-dev/weboob,sputnick-dev/weboob,nojhan/weboob-devel,willprice/weboob,sputnick-dev/weboob,nojhan/weboob-devel,RouxRC/weboob,willprice/weboob