adding "once" test
adding "once" test


Former-commit-id: b7dda4d082a12437ef5ba27a73be7938ac2dfea4 [formerly 040b49ac54f21e0d18b750206e0221b7f105434e]
Former-commit-id: 8d562474f1503c693b9ba216436cbcd5e962d0b4
andrewplummer/Sugar,romancow/Sugar,andrewplummer/Sugar,romancow/Sugar