* test/ruby/test_hash.rb (TestHash#test_dup_equality): added a new test

to show the problem of r37232.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37238 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Oct 17 11:04:48 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* test/ruby/test_hash.rb (TestHash#test_dup_equality): added a new test
+	  to show the problem of r37232.
+
 Wed Oct 17 10:48:40 2012  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* vm_insnhelper.c (vm_search_method): fix a build error that occurs 

test/ruby/test_hash.rb

@@ -325,6 +325,15 @@ class TestHash < Test::Unit::TestCase
     end
   end
 
+  def test_dup_equality
+    h = {'k' => 'v'}
+    assert_equal(h, h.dup)
+    h1 = {h => 1}
+    assert_equal(h1, h1.dup)
+    h[1] = 2
+    assert_equal(h1, h1.dup)
+  end
+
   def test_each
     count = 0
     @cls[].each { |k, v| count + 1 }