test_pathlib fails if current path has junctions

[native-api]

BPO	32266
Nosy	@larryhastings, @native-api
PRs	bpo-32266: make test_pathlib pass when working path has junctions #4778

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2017-12-10.08:29:27.732>
labels = ['3.7', '3.8', 'type-bug', 'tests']
title = 'test_pathlib fails if current path has junctions'
updated_at = <Date 2018-01-22.10:22:48.943>
user = 'https://github.com/native-api'

bugs.python.org fields:

activity = <Date 2018-01-22.10:22:48.943>
actor = 'larry'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2017-12-10.08:29:27.732>
creator = 'Ivan.Pozdeev'
dependencies = []
files = []
hgrepos = []
issue_num = 32266
keywords = ['patch']
message_count = 2.0
messages = ['307945', '310412']
nosy_count = 2.0
nosy_names = ['larry', 'Ivan.Pozdeev']
pr_nums = ['4778']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue32266'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8']

[native-api]

On this machine, C:\Users is a junction to D:\Users .

Sample failure:

Running Release|x64 interpreter...
....FFF........s...s..s.s.s................s......FF..............ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss.........................................................................................................................................................................FFF........s...s..s.s.s................s......FF...........
======================================================================
FAIL: test_complex_symlinks_absolute (main.PathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 2027, in test_complex_symlinks_absolute
    self._check_complex_symlinks(BASE)
  File "Lib\test\test_pathlib.py", line 1994, in _check_complex_symlinks
    self.assertEqual(p, P)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_complex_symlinks_relative (main.PathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 2031, in test_complex_symlinks_relative
    self._check_complex_symlinks('.')
  File "Lib\test\test_pathlib.py", line 1994, in _check_complex_symlinks
    self.assertEqual(p, P)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_complex_symlinks_relative_dot_dot (main.PathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 2035, in test_complex_symlinks_relative_dot_dot
    self._check_complex_symlinks(os.path.join('dirA', '..'))
  File "Lib\test\test_pathlib.py", line 1994, in _check_complex_symlinks
    self.assertEqual(p, P)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_resolve_common (main.PathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 1491, in test_resolve_common
    os.path.join(BASE, 'foo'))
AssertionError: 'D:\\Users\\Ivan\\Documents\\cpython_all\\@test_2376_tmp\\foo' != 'C:\\Users\\Ivan\\Documents\\cpython_all\\@test_2376_tmp\\foo'
- D:\Users\Ivan\Documents\cpython_all\@test_2376_tmp\foo
? ^
+ C:\Users\Ivan\Documents\cpython_all\@test_2376_tmp\foo
? ^

======================================================================
FAIL: test_resolve_dot (main.PathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 1550, in test_resolve_dot
    self.assertEqual(q.resolve(strict=True), p)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_complex_symlinks_absolute (main.WindowsPathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 2027, in test_complex_symlinks_absolute
    self._check_complex_symlinks(BASE)
  File "Lib\test\test_pathlib.py", line 1994, in _check_complex_symlinks
    self.assertEqual(p, P)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_complex_symlinks_relative (main.WindowsPathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 2031, in test_complex_symlinks_relative
    self._check_complex_symlinks('.')
  File "Lib\test\test_pathlib.py", line 1994, in _check_complex_symlinks
    self.assertEqual(p, P)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_complex_symlinks_relative_dot_dot (main.WindowsPathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 2035, in test_complex_symlinks_relative_dot_dot
    self._check_complex_symlinks(os.path.join('dirA', '..'))
  File "Lib\test\test_pathlib.py", line 1994, in _check_complex_symlinks
    self.assertEqual(p, P)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

======================================================================
FAIL: test_resolve_common (main.WindowsPathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 1491, in test_resolve_common
    os.path.join(BASE, 'foo'))
AssertionError: 'D:\\Users\\Ivan\\Documents\\cpython_all\\@test_2376_tmp\\foo' != 'C:\\Users\\Ivan\\Documents\\cpython_all\\@test_2376_tmp\\foo'
- D:\Users\Ivan\Documents\cpython_all\@test_2376_tmp\foo
? ^
+ C:\Users\Ivan\Documents\cpython_all\@test_2376_tmp\foo
? ^

======================================================================
FAIL: test_resolve_dot (main.WindowsPathTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "Lib\test\test_pathlib.py", line 1550, in test_resolve_dot
    self.assertEqual(q.resolve(strict=True), p)
AssertionError: WindowsPath('D:/Users/Ivan/Documents/cpython_all/@test_2376_tmp') != WindowsPath('C:/Users/Ivan/Documents/cpython_all/@test_2376_tmp')

---

Ran 394 tests in 2.215s

FAILED (failures=10, skipped=112)

[larryhastings]

Python 3.4 and 3.5 are in "security fixes only" mode. This is a minor bugfix, so it's too late to accept it into 3.4 and 3.5.

[barneygale]

No longer reproducible, suspect this was fixed by GH-25264.