BIG-IP Simulator?

From time to time I give some thought to automating some of my load balancing administration.

 

I hesitate because I would have to test code against my live production systems. I don't have any non-production

 

BIGIPs and I'm not likely to get any.

 

 

I recently discovered that Network Applicance offers a NetApp simulator and that got me wondering.. is there a BIGIP simulator?