Github user justACT commented on the issue:
https://github.com/apache/griffin/pull/463
maybe it is not easy to mock static class(object), you know that HttpUtil
is a Object,
https://stackoverflow.com/questions/43475907/mocking-scala-objects-and-functions/43477065
also faces similar problem, if someone is familiar with and interested in it,
looking forward your help to finalize this part of UT, thanks.---
