1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/test/cases/dup_test.rb b/activerecord/test/cases/dup_test.rb
index 0236f9b0a1..9705a11387 100644
--- a/activerecord/test/cases/dup_test.rb
+++ b/activerecord/test/cases/dup_test.rb
@@ -99,5 +99,13 @@ module ActiveRecord
       assert_not_nil new_topic.created_at
     end
 
+    def test_dup_after_initialize_callbacks
+      topic = Topic.new
+      assert Topic.after_initialize_called
+      Topic.after_initialize_called = false
+      topic.dup
+      assert Topic.after_initialize_called
+    end
+
   end
 end