forked Rspec

fork-rspec.rb

require 'rspec/core/rake_task'

@parallel_limit = 4

files = Dir.glob("spec/**/*_spec.rb")
pids = []

@parallel_limit.times do |i|
  pids << fork do
    # Run the tests
    opts = files.each_slice(files.count / @parallel_limit).to_a[i].join(",")
    puts "Fork #{i} testing #{opts}"

    RSpec::Core::RakeTask.new("spec#{i}") do |t|
      t.pattern = opts
    end
    Rake::Task["spec#{i}"].execute

    # Force the fork to end without running at_exit bindings
    Kernel.exit!
  end
end
Process.waitall

https://gist.github.com/aaronhumerickhouse/80f06da79de12ec3b4e2