* test/ruby/test_refinement.rb (test_refine_alias_in_subclass):

  add a test to check that alias in subclasses can be refined.
  [ruby-core:69374] [Bug #11186]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56568 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 25 insertions, 0 deletions

diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index 3b3ceb048c..5cbb11121b 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -1750,6 +1750,31 @@ class TestRefinement < Test::Unit::TestCase
     assert_equal("Foo#x", FooExtClient.return_proc(&:x).(Foo.new))
   end
 
+  module AliasInSubclass
+    class C
+      def foo
+        :original
+      end
+    end
+
+    class D < C
+      alias bar foo
+    end
+
+    module M
+      refine D do
+        def bar
+          :refined
+        end
+      end
+    end
+  end
+
+  def test_refine_alias_in_subclass
+    assert_equal(:refined,
+                 eval_using(AliasInSubclass::M, "AliasInSubclass::D.new.bar"))
+  end
+
   private
 
   def eval_using(mod, s)