gh-139322: Remove redundant test_os.Win32ErrorTests

[vstinner]

test_os OSErrorTests already covers the OSError class and is more complete than Win32ErrorTests.

• Issue: Tests: move test_posix.py and test_os.py into a new test_os package #139322

[vstinner]

cc @serhiy-storchaka

[serhiy-storchaka]

Maybe test for more concrete OSError subclass? It is FileExistsError on Linux.

Also, NotADirectoryError for os.path.join(filename, 'subdir') and FileNotFoundError for os.path.join(filename, 'subdir') if filename does not exist,

[vstinner]

Let me try with FileExistsError.

[serhiy-storchaka]

LGTM. 👍

But if we add a new test, I suggest to add also tests for os.path.join(filename, 'subdir'), before and after creation of filename. AFAIK, this is not tested.

[vstinner]

Merged. I added more tests on chdir() errors.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 CentOS9 NoGIL Refleaks 3.x (tier-1) has failed when building commit af01b46.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1610/builds/2155) and take a look at the build logs.
4. Check if the failure is related to this commit (af01b46) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1610/builds/2155

Failed tests:

• test_free_threading

Test leaking resources:

• test_free_threading: file descriptors

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 7, done.        
remote: Counting objects:  20% (1/5)        
remote: Counting objects:  40% (2/5)        
remote: Counting objects:  60% (3/5)        
remote: Counting objects:  80% (4/5)        
remote: Counting objects: 100% (5/5)        
remote: Counting objects: 100% (5/5), done.        
remote: Compressing objects:  50% (1/2)        
remote: Compressing objects: 100% (2/2)        
remote: Compressing objects: 100% (2/2), done.        
remote: Total 7 (delta 3), reused 3 (delta 3), pack-reused 2 (from 1)        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'af01b4686613ec712f803959f0dba4e34d07ae3e'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at af01b468661 gh-139322: Remove redundant `test_os.Win32ErrorTests` (#139477)
Switched to and reset branch 'main'

configure: WARNING: no system libmpdec found; falling back to pure-Python version for the decimal module

make: *** [Makefile:2487: buildbottest] Error 2