I don’t know if its implemented yet, but you should also check the
RubySpecs to se what is tested.
Hi Jim,
Sorry, I got confused by your tests and RubySpecs
E:\IronRuby\trunk\build\release>rake mspec:core Exception
(in E:/IronRuby/trunk)
…
Finished in 8.744558 seconds
21 files, 40 examples, 40 expectations, 0 failures, 0 errors
However, I had a quick look at what was included. backtrace_spec.rb
is empty. Git commit notification seems to imply its waiting for
someone to write it 
Are many of the specs empty? I assume they are a work in progress…
Thanks
Ben