This (IMHO) is one of the biggest downsides to Progress ... all of the things you get in abundance and for free in Java/.NET Land ... like xUnit, mocking, CheckStyle, FXCop, etc... are mostly nowhere to be found. On the other hand, there are so many of those tools out there and of such massively divergent quality ... it might be a net saving...
Just wanted to share our findings.
OEUnit - pretty tool, integreted with OEA. A bit finicky (sometimes fails to compile from whatever reason), but works. You have to create testing class to work with. The point is that it looks like the project was abandoned a while ago and the source code doesn't compile (we had to fix it). The second point is that we didn't find a way to run this tool from the command line.