lots of background info available at http://www.electronicvoting.ie/english/download.ht ml
seems there are 2 levels of testing

1- does the 'box' on the day record all data correctly ?
2- does the software that later analyses that data and declares the winners work correctly ?

seems they focused mostly on the later

interesting bits...
"Given the developer's postponement of implementing referential integrity in the database....."
"..uses Access97.." _nuff said_

I may actually vote now