copr: Restore missing test for `interval_xxx` funcs. (#6216)
copr: Restore missing test for `interval_xxx` funcs. (#6216)

Signed-off-by: FKYnJYQ <6080e4a72c432f2bd1b497b2826b1b48d81266ca@gmail.com>
c4pt0r/tikv,BusyJay/tikv,pingcap/tikv,pingcap/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv