_get_name_from_path() in Lib/unittest/loader.py fails when src path contains symlinks

Bug report

Bug description:

This is conceptually somewhat similar to gh-148314

When the path to the source tree is via a symlink, an alternate path to the same will cause _get_name_from_path() to assert, thinking the supplied path is not a sub-path of the src tree. During the run of unittest's test suite, "." is passed as a path which is resolved to an absolute path - which of course doesn't match a symlinked path.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-149143

Commencez dans Lib/unittest/loader.py, à _get_name_from_path(), puis exécutez la suite de tests de unittest en utilisant un chemin de l’arborescence des sources atteint via un symlink. C’est terminé lorsque le chemin alternatif ne déclenche plus l’assertion du sous-chemin et que la couverture de régression pertinente passe ; gh-149143 est déjà associé à cette issue.