Use AT_INTERNAL_ASSERT in test_base (#20555)
Summary:
as title. We were using AT_ASSERT, which is newly deprecated. In this case, we do in fact want an internal assertion since this is used in testing code to describe expected behavior.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20555
Differential Revision: D15362964
Pulled By: suo
fbshipit-source-id: 984bfe71a774571611f3bbd81767d3cdb878a6fd
