[issue25130] Make tests more PyPy compatible

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


----------
pull_requests: +26462
pull_request: https://github.com/python/cpython/pull/28017

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue25130>
_______________________________________