There's this: http://ruby.sadi.st/Heckle.html http://ruby.sadi.st/Heckle.html It changes your class, then runs your tests to make sure they fail. I haven't tr

There's this: http://ruby.sadi.st/Heckle.html http://ruby.sadi.st/Heckle.html It changes your class, then runs your tests to make sure they fail. I haven't tried it myself.