Valuable Unit Tests in a Software Medical Device, Part 9

I thought I was done, but here is yet another good reason to incorporate complex function automated testing: Validation of multiple Java runtime environments. Fabrizio Giudici proposes this as a solution for testing with Java 7, but we can always take it a step further, verifying multiple OS environments as well. Of course, this requires that we have those build environments available (easy enough, using virtual machines).