[Pharo-project] Expected failures/errors on SUnit

There is a tool we are writing that needs to stop running the tests of a test suite if there is an error or a failure (as a performance improvement)To my surprise, using failuresCount and errorsCount made the tool run slower than faster and the reason is because of the expected failures and errors... asking for the failuresCount and the errorCounts goes through all the failures and error selecting only those that should not pass... anyway, it is a slow implementation. I'm not sure if this is the right list to ask this for, but does somebody know why is it implemented that way? could this be changed? who is the responsible for maintaining/changing SUnit? Thanks, Hernan.