require 'rake/testtask' desc "Default Task" task default: [ :test ] task :package task "package:clean" # Run the unit tests Rake::TestTask.new { |t| t.libs << "test" t.pattern = 'test/**/*_test.rb' t.warning = true t.verbose = true t.ruby_opts = ["--dev"] if defined?(JRUBY_VERSION) } 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