Don't undefine #class in OptionMerger [Rick]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5197 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Don't undefine #class in OptionMerger [Rick]
+
 * Hash.create_from_xml has been renamed to Hash.from_xml, alias will exist until Rails 2.0 [DHH]
 
 * alias_method_chain works with accessor= methods also.  #6153 [Caio Chassot]

activesupport/lib/active_support/option_merger.rb

@@ -1,7 +1,7 @@
 module ActiveSupport
   class OptionMerger #:nodoc:
     instance_methods.each do |method| 
-      undef_method(method) if method !~ /^(__|instance_eval)/
+      undef_method(method) if method !~ /^(__|instance_eval|class)/
     end
     
     def initialize(context, options)

activesupport/test/option_merger_test.rb

@@ -38,6 +38,11 @@ class OptionMergerTest < Test::Unit::TestCase
     end
   end
 
+  # Needed when counting objects with the ObjectSpace
+  def test_option_merger_class_method
+    assert_equal ActiveSupport::OptionMerger, ActiveSupport::OptionMerger.new('', '').class
+  end
+
   private
     def method_with_options(options = {})
       options