Merge pull request #13 from jonathanhefner/delegate_class-block-method-redefined-warning

Fix `DelegateClass` block "method redefined" warning

Author: nobu

lib/delegate.rb

@@ -412,10 +412,12 @@ def __setobj__(obj)  # :nodoc:
     end
     protected_instance_methods.each do |method|
       define_method(method, Delegator.delegating_block(method))
+      alias_method(method, method)
       protected method
     end
     public_instance_methods.each do |method|
       define_method(method, Delegator.delegating_block(method))
+      alias_method(method, method)
     end
   end
   klass.define_singleton_method :public_instance_methods do |all=true|

test/test_delegate.rb

@@ -29,6 +29,18 @@ def test_delegate_class_block
     assert_equal(1, klass.new([1]).foo)
   end
 
+  def test_delegate_class_block_with_override
+    warning = EnvUtil.verbose_warning do
+      klass = DelegateClass(Array) do
+        def first
+          super.inspect
+        end
+      end
+      assert_equal("1", klass.new([1]).first)
+    end
+    assert_empty(warning)
+  end
+
   def test_systemcallerror_eq
     e = SystemCallError.new(0)
     assert((SimpleDelegator.new(e) == e) == (e == SimpleDelegator.new(e)), "[ruby-dev:34808]")