Wendersnaven.com (a resource for nwn2 builders)

Here you will find some useful information regarding testing.

Here's a general thread discussing some good ways to make testing and debuging easier in a large module:
http://nwn2forums.bioware.com/forums/viewtopic.html?topic=572072&forum=113

The debugger, debug messages, debug creatures with conversations set up to help you test and the console are just a few of the tools you have at your disposal. 

So far this section mainly deals with scripting. See the links below: