gistfile1.rb

diff --git a/test/ruby/test_fiber.rb b/test/ruby/test_fiber.rb
index 25a4608..fcf89bf 100644
--- a/test/ruby/test_fiber.rb
+++ b/test/ruby/test_fiber.rb
@@ -52,6 +52,7 @@ class TestFiber < Test::Unit::TestCase
       (1..100).map{|ti|
         Thread.new{
           max.times{|i|
+IO.select([$stdin], nil, nil, 0) # print "" でも可。Thread.pass ではタイムアウト
             Fiber.new{
               @cnt += 1
             }.resume