require 'rake/testtask' task :default => :test task :package task "package:clean" Rake::TestTask.new do |t| t.libs << 'test' t.pattern = 'test/**/*_test.rb' t.warning = true t.verbose = true t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION) end namespace :test do task :isolated do Dir.glob("test/**/*_test.rb").all? do |file| sh(Gem.ruby, '-w', '-Ilib:test', file) end or raise "Failures" end end