Bug #5350

* gc.c: add ObjectSpace::WeakMap.  [ruby-dev:44565][Bug #5350]
* lib/weakref.rb: use WeakMap instead of _id2ref.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34995 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 0 deletions

diff --git a/test/test_weakref.rb b/test/test_weakref.rb
new file mode 100644
index 0000000000..97274c1f3f
--- /dev/null
+++ b/test/test_weakref.rb
@@ -0,0 +1,22 @@
+require 'test/unit'
+require 'weakref'
+
+class TestWeakRef < Test::Unit::TestCase
+  def make_weakref
+    obj = Object.new
+    return WeakRef.new(obj), obj.to_s
+  end
+
+  def test_ref
+    weak, str = make_weakref
+    assert_equal(str, weak.to_s)
+  end
+
+  def test_recycled
+    weak, str = make_weakref
+    assert_nothing_raised(WeakRef::RefError) {weak.to_s}
+    ObjectSpace.garbage_collect
+    ObjectSpace.garbage_collect
+    assert_raise(WeakRef::RefError) {weak.to_s}
+  end
+end