Hi Jose, the library I use the is most json2.js in two main ways:
1. Testing RESTful Web Services (creating and parsing JSON documents)
2. Complex test configuration and key/value mappings
I also Base.js for Classes as I wanted a standalone iheritance library, and I prefer the way it works over the others (It's nice being the Tech lead in the test team :)
But like you say, I have written a Framework of my own, primarily because Web Testing is only a tiny part of our work.
Adding JavaScript libraries to your Project is actually very easy, it's as simple as:
1. Download the library
2. Change the extention form .js to .sj
3. Add as an existing Script Unit
There's probably even a case for wrapping them up in a script Extention if you wanted to.
However, there may be issues around features not being available due to the JScript engine depending on the library.
Phil