1 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/test/cases/arel/delete_manager_test.rb b/activerecord/test/cases/arel/delete_manager_test.rb
index 0bad02f4d2..63cd1bffe3 100644
--- a/activerecord/test/cases/arel/delete_manager_test.rb
+++ b/activerecord/test/cases/arel/delete_manager_test.rb
@@ -49,5 +49,23 @@ module Arel
         dm.where(table[:id].eq(10)).must_equal dm
       end
     end
+
+    describe "comment" do
+      it "chains" do
+        manager = Arel::DeleteManager.new
+        manager.comment("deleting").must_equal manager
+      end
+
+      it "appends a comment to the generated query" do
+        table = Table.new(:users)
+        dm = Arel::DeleteManager.new
+        dm.from table
+        dm.comment("deletion")
+        assert_match(%r{DELETE FROM "users" /\* deletion \*/}, dm.to_sql)
+
+        dm.comment("deletion", "with", "comment")
+        assert_match(%r{DELETE FROM "users" /\* deletion \*/ /\* with \*/ /\* comment \*/}, dm.to_sql)
+      end
+    end
   end
 end