1 files changed, 17 insertions, 0 deletions
diff --git a/spec/ruby/core/module/shared/set_visibility.rb b/spec/ruby/core/module/shared/set_visibility.rb
index c39d59e05d..a04b1a54a0 100644
--- a/spec/ruby/core/module/shared/set_visibility.rb
+++ b/spec/ruby/core/module/shared/set_visibility.rb
@@ -5,6 +5,23 @@ describe :set_visibility, shared: true do
     Module.should have_private_instance_method(@method, false)
   end
 
+  describe "with argument" do
+    it "does not clone method from the ancestor when setting to the same visibility in a child" do
+      visibility = @method
+      parent = Module.new {
+        def test_method; end
+        send(visibility, :test_method)
+      }
+
+      child = Module.new {
+        include parent
+        send(visibility, :test_method)
+      }
+
+      child.should_not send(:"have_#{visibility}_instance_method", :test_method, false)
+    end
+  end
+
   describe "without arguments" do
     it "sets visibility to following method definitions" do
       visibility = @method