Add test case for unscoping `:optimizer_hints`

1 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapters/mysql2/optimizer_hints_test.rb b/activerecord/test/cases/adapters/mysql2/optimizer_hints_test.rb
index 349de49b36..31a002e935 100644
--- a/activerecord/test/cases/adapters/mysql2/optimizer_hints_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/optimizer_hints_test.rb
@@ -19,6 +19,12 @@ if supports_optimizer_hints?
         posts = posts.select(:id).where(author_id: [0, 1])
         assert_includes posts.explain, "| index | index_posts_on_author_id | index_posts_on_author_id |"
       end
+
+      assert_sql(%r{\ASELECT `posts`\.`id`}) do
+        posts = Post.optimizer_hints("/*+ NO_RANGE_OPTIMIZATION(posts index_posts_on_author_id) */")
+        posts = posts.select(:id).where(author_id: [0, 1])
+        posts.unscope(:optimizer_hints).load
+      end
     end
   end
 end