Heh. I hadn't thought about this not working on windows.. Although I guess technically it would just use that as a literal filename.. So it would be translated into c:\dev\null or whatever :D 
We don't have a Windows image for us to test it.. So "hope it works" is all I can say.

The actual testsuite itself should work just fine, with the exception of the make targets - but they are individual scripts intentionally, and can be executed manually to spin the servers up before launching the tests