test_bisect.rb

def bisect(suspects, victim)
  return suspects[0] if suspects.size == 1
  pivot = suspects.size / 2

  suspects.partition {|file| suspects.index(file) < pivot }.each do |part|
    command = %[ruby -r test/unit -I ./vendor/gems/dependency_detection-0.0.1.build/lib -r dependency_detection -r./#{part.join(' -r ./')} #{victim}]

    print command + "\n"
    if system(command)
      puts "------ PASSED: #{$?} -------"
      next
    else
      puts "------ FAILED: #{$?} -------"
      return bisect(part, victim)
    end
  end
end

victim = ARGV[0]
suspects = Dir.glob((ARGV[1] || 'test/**/*_test.rb')) - [victim]
suspects.reject!{|path| path.include?('multiverse') }

puts "FOUND: " + bisect(suspects, victim).inspect