1 files changed, 18 insertions, 0 deletions
diff --git a/test/psych/test_serialize_subclasses.rb b/test/psych/test_serialize_subclasses.rb
index 344c79b3ef..640c331337 100644
--- a/test/psych/test_serialize_subclasses.rb
+++ b/test/psych/test_serialize_subclasses.rb
@@ -35,5 +35,23 @@ module Psych
       so = StructSubclass.new('foo', [1,2,3])
       assert_equal so, Psych.unsafe_load(Psych.dump(so))
     end
+
+    class DataSubclass < Data.define(:foo)
+      def initialize(foo:)
+        @bar = "hello #{foo}"
+        super(foo: foo)
+      end
+
+      def == other
+        super(other) && @bar == other.instance_eval{ @bar }
+      end
+    end unless RUBY_VERSION < "3.2"
+
+    def test_data_subclass
+      omit "Data requires ruby >= 3.2" if RUBY_VERSION < "3.2"
+      so = DataSubclass.new('foo')
+      assert_equal so, Psych.unsafe_load(Psych.dump(so))
+    end
+
   end
 end