1 files changed, 39 insertions, 2 deletions
diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index 5c06266d6e..ba571670cf 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -118,6 +118,10 @@ class TestRefinement < Test::Unit::TestCase
         return foo.method(:z)
       end
 
+      def self.instance_method_z(foo)
+        return foo.class.instance_method(:z)
+      end
+
       def self.invoke_call_x_on(foo)
         return foo.call_x
       end
@@ -213,11 +217,44 @@ class TestRefinement < Test::Unit::TestCase
     assert_raise(NoMethodError) { FooExtClient.public_send_b_on(foo) }
   end
 
-  def test_method_should_not_use_refinements
+  module MethodIntegerPowEx
+    refine Integer do
+      def pow(*)
+        :refine_pow
+      end
+    end
+  end
+  def test_method_should_use_refinements
     foo = Foo.new
     assert_raise(NameError) { foo.method(:z) }
-    assert_raise(NameError) { FooExtClient.method_z(foo) }
+    assert_equal("FooExt#z", FooExtClient.method_z(foo).call)
     assert_raise(NameError) { foo.method(:z) }
+    assert_equal(8, eval(<<~EOS, Sandbox::BINDING))
+      meth = 2.method(:pow)
+      using MethodIntegerPowEx
+      meth.call(3)
+    EOS
+    assert_equal(:refine_pow, eval_using(MethodIntegerPowEx, "2.pow(3)"))
+  end
+
+  module InstanceMethodIntegerPowEx
+    refine Integer do
+      def abs
+        :refine_abs
+      end
+    end
+  end
+  def test_instance_method_should_use_refinements
+    foo = Foo.new
+    assert_raise(NameError) { Foo.instance_method(:z) }
+    assert_equal("FooExt#z", FooExtClient.instance_method_z(foo).bind(foo).call)
+    assert_raise(NameError) { Foo.instance_method(:z) }
+    assert_equal(4, eval(<<~EOS, Sandbox::BINDING))
+      meth = Integer.instance_method(:abs)
+      using InstanceMethodIntegerPowEx
+      meth.bind(-4).call
+    EOS
+    assert_equal(:refine_abs, eval_using(InstanceMethodIntegerPowEx, "Integer.instance_method(:abs).bind(-4).call"))
   end
 
   def test_no_local_rebinding