require 'bundler' Bundler::GemHelper.install_tasks namespace :spec do desc "Run on three Rubies" task :platforms do current = %x{rvm-prompt v} %w{1.8.7 1.9.2 ree}.each do |version| puts "Switching to #{version}" system %{rvm #{version}} system %{bundle exec rspec spec} break if $?.exitstatus != 0 end system %{rvm #{current}} end end