1 files changed, 23 insertions, 0 deletions
diff --git a/spec/ruby/core/refinement/extend_object_spec.rb b/spec/ruby/core/refinement/extend_object_spec.rb
new file mode 100644
index 0000000000..6c2a0af4f3
--- /dev/null
+++ b/spec/ruby/core/refinement/extend_object_spec.rb
@@ -0,0 +1,23 @@
+require_relative '../../spec_helper'
+
+describe "Refinement#extend_object" do
+  ruby_version_is "3.2" do
+    it "is not defined" do
+      Refinement.should_not have_private_instance_method(:extend_object)
+    end
+
+    it "is not called by Object#extend" do
+      c = Class.new
+      Module.new do
+        refine c do
+          called = false
+          define_method(:extend_object) { called = true }
+          -> {
+            c.extend(self)
+          }.should raise_error(TypeError)
+          called.should == false
+        end
+      end
+    end
+  end
+end