Test the DataLink

We use DataLinks a lot and you dont really know for sure that its all worked ok until the browser app is used (and feature clicked). It would be useful if when you have created your DataLink in the Manager, you could then click a TEST button that prompts for whatever variable the datalink is expecting and just lists the response. It doesnt have to be neatly formatted or anything, just a display of all the fields to be returned. 
So its not really about errors but more of checking have the right results that I wanted come back?
Thanks!