Install bundler, if not installed, then install gems:
gem install bundler --no-rdoc --no-ri
bundle install
Install haproxy. OS/X w/ homebrew:
brew install haproxy
ApacheBench on OSX Lion is broken. Use the included ./ab or follow the guide here: http://forrst.com/posts/Fixing_ApacheBench_bug_on_Mac_OS_X_Lion-wku
Test with 1 thin process:
./run_tests.sh 1