nobu	2014-01-10 18:42:31 +0900 (Fri, 10 Jan 2014)

  New Revision: 44555

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=44555

  Log:
    test_weakref.rb: find collected weakref
    
    * test/test_weakref.rb (test_recycled): retry and find a WeakRef
      whose the target is collected, to fix circumstance dependent.

  Modified files:
    trunk/test/test_weakref.rb
Index: test/test_weakref.rb
===================================================================
--- test/test_weakref.rb	(revision 44554)
+++ test/test_weakref.rb	(revision 44555)
@@ -19,9 +19,14 @@ class TestWeakRef < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/test_weakref.rb#L19
   end
 
   def test_recycled
-    weak = make_weakref
-    ObjectSpace.garbage_collect
-    ObjectSpace.garbage_collect
+    weaks = []
+    weak = nil
+    100.times do
+      weaks << make_weakref
+      ObjectSpace.garbage_collect
+      ObjectSpace.garbage_collect
+      break if weak = weaks.find {|w| !w.weakref_alive?}
+    end
     assert_raise(WeakRef::RefError) {weak.to_s}
     assert_not_predicate(weak, :weakref_alive?)
   end

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