Though working about a week ago autotest currently fails with the following message:
/Users/druiden/.rvm/gems/ruby-1.8.7-p249/bundler/gems/rspec-rails-ecc85494c7a36ef96e6fae06cbac27505f02dc64-273e1249d69c348b8e4c5a273447a247fe8ac328/lib/rspec/rails/transactional_database_support.rb:37: undefined method `configure' for RSpec:Module (NoMethodError)
from /Users/druiden/.rvm/gems/ruby-1.8.7-p249/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-c53683595749dcfa223802669237480ac9ebc17f/activesupport/lib/active_support/dependencies.rb:209:in `require'
from...