gistfile1.txt

ryan@osangar ~ $ irb
1.9.3-p327 :001 > (1..10).each do |i|
1.9.3-p327 :002 >       passes = true
1.9.3-p327 :003?>     begin
1.9.3-p327 :004 >           (rp, wp) = IO.pipe
1.9.3-p327 :005?>         wp.write_nonblock ("F" * i) while(select [],
 [wp], [], 0)
1.9.3-p327 :006?>       rescue Errno::EAGAIN
1.9.3-p327 :007?>         puts "#{i}: FAIL"
1.9.3-p327 :008?>         passes = false
1.9.3-p327 :009?>       ensure
1.9.3-p327 :010 >           rp.close
1.9.3-p327 :011?>         wp.close
1.9.3-p327 :012?>       end
1.9.3-p327 :013?>     puts "#{i}: PASS" if passes
1.9.3-p327 :014?>   end
1: PASS
2: PASS
3: FAIL
4: PASS
5: FAIL
6: FAIL
7: FAIL
8: PASS
9: FAIL
10: FAIL
 => 1..10 
1.9.3-p327 :015 > ^D
ryan@osangar ~ $ uname -a 
Darwin osangar.local 12.2.1 Darwin Kernel Version 12.2.1: Thu Oct 18 1
6:32:48 PDT 2012; root:xnu-2050.20.9~2/RELEASE_X86_64 x86_64