python / python/cpython

``test_os.test_attributes()`` fails on Windows

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OS-windows tests type-bug
Dominant language
Python
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Description

Bug report

Bug description:
./python -m test -v test_os
======================================================================
FAIL: test_attributes (test.test_os.TestScandir.test_attributes)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\eclips4\programming\cpython\Lib\test\test_os.py", line 5040, in test_attributes
    self.check_entry(entry, 'dir', True, False, False)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\eclips4\programming\cpython\Lib\test\test_os.py", line 5008, in check_entry
    self.assert_stat_equal(entry.stat(),
    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
                           entry_stat,
                           ^^^^^^^^^^^
                           os.name == 'nt' and not is_symlink)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\eclips4\programming\cpython\Lib\test\test_os.py", line 4967, in assert_stat_equal
    self.assertEqual(getattr(stat1, attr),
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
                     getattr(stat2, attr),
                     ^^^^^^^^^^^^^^^^^^^^^
                     (stat1, stat2, attr))
                     ^^^^^^^^^^^^^^^^^^^^^
AssertionError: 16 != 268435472 : (os.stat_result(st_mode=16895, st_ino=0, st_dev=0, st_nlink=0, st_uid=0, st_gid=0, st_size=0, st_atime=1730398311, st_mtime=1730398311, st_ctime=1730398311), os.stat_result(st_mode=16895, st_ino=5066549580979864, st_dev=2642700522657803134, st_nlink=1, st_uid=0, st_gid=0, st_size=0, st_atime=1730398311, st_mtime=1730398311, st_ctime=1730398311), 'st_file_attributes')

----------------------------------------------------------------------
Ran 367 tests in 16.254s

FAILED (failures=1, skipped=146)
test test_os failed
test_os failed (1 failure)

== Tests result: FAILURE ==

1 test failed:
    test_os

Total duration: 21.1 sec
Total tests: run=367 failures=1 skipped=146
Total test files: run=1/1 failed=1
Result: FAILURE
CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

Linked PRs
  • gh-156305

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First steps

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  4. Open a pull request that references the issue number.

Research direction

Run ./python -m test -v test_os on Windows and read Lib/test/test_os.py around test_attributes, check_entry, and assert_stat_equal. Compare the failure with linked PR gh-156305; done means test_os passes on Windows without the reported st_file_attributes mismatch.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
operating-systems, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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