Pathlib originally implemented its own path joining algorithm with its own tests. Nowadays pathlib now calls through to os.path.join() (see #95450), but there's still a handful of tests for path joining remaining that are better suited to test_posixpath and test_ntpath.
Affects the test_drive_root_parts_common and test_drive_root_parts test methods.
Linked PRs
Pathlib originally implemented its own path joining algorithm with its own tests. Nowadays pathlib now calls through to
os.path.join()(see #95450), but there's still a handful of tests for path joining remaining that are better suited totest_posixpathandtest_ntpath.Affects the
test_drive_root_parts_commonandtest_drive_root_partstest methods.Linked PRs
test_posixpathandtest_ntpath#112676