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Update test_ntpath to CPython 3.10
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‎Lib/test/test_ntpath.py

Lines changed: 89 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -269,6 +269,17 @@ def test_realpath_basic(self):
269269
self.assertPathEqual(ntpath.realpath(os.fsencode(ABSTFN + "1")),
270270
os.fsencode(ABSTFN))
271271

272+
@os_helper.skip_unless_symlink
273+
@unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
274+
def test_realpath_strict(self):
275+
# Bug #43757: raise FileNotFoundError in strict mode if we encounter
276+
# a path that does not exist.
277+
ABSTFN = ntpath.abspath(os_helper.TESTFN)
278+
os.symlink(ABSTFN + "1", ABSTFN)
279+
self.addCleanup(os_helper.unlink, ABSTFN)
280+
self.assertRaises(FileNotFoundError, ntpath.realpath, ABSTFN, strict=True)
281+
self.assertRaises(FileNotFoundError, ntpath.realpath, ABSTFN + "2", strict=True)
282+
272283
@os_helper.skip_unless_symlink
273284
@unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
274285
def test_realpath_relative(self):
@@ -343,8 +354,9 @@ def test_realpath_broken_symlinks(self):
343354
@os_helper.skip_unless_symlink
344355
@unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
345356
def test_realpath_symlink_loops(self):
346-
# Symlink loops are non-deterministic as to which path is returned, but
347-
# it will always be the fully resolved path of one member of the cycle
357+
# Symlink loops in non-strict mode are non-deterministic as to which
358+
# path is returned, but it will always be the fully resolved path of
359+
# one member of the cycle
348360
ABSTFN = ntpath.abspath(os_helper.TESTFN)
349361
self.addCleanup(os_helper.unlink, ABSTFN)
350362
self.addCleanup(os_helper.unlink, ABSTFN + "1")
@@ -386,6 +398,50 @@ def test_realpath_symlink_loops(self):
386398
# Test using relative path as well.
387399
self.assertPathEqual(ntpath.realpath(ntpath.basename(ABSTFN)), ABSTFN)
388400

401+
@os_helper.skip_unless_symlink
402+
@unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
403+
def test_realpath_symlink_loops_strict(self):
404+
# Symlink loops raise OSError in strict mode
405+
ABSTFN = ntpath.abspath(os_helper.TESTFN)
406+
self.addCleanup(os_helper.unlink, ABSTFN)
407+
self.addCleanup(os_helper.unlink, ABSTFN + "1")
408+
self.addCleanup(os_helper.unlink, ABSTFN + "2")
409+
self.addCleanup(os_helper.unlink, ABSTFN + "y")
410+
self.addCleanup(os_helper.unlink, ABSTFN + "c")
411+
self.addCleanup(os_helper.unlink, ABSTFN + "a")
412+
413+
os.symlink(ABSTFN, ABSTFN)
414+
self.assertRaises(OSError, ntpath.realpath, ABSTFN, strict=True)
415+
416+
os.symlink(ABSTFN + "1", ABSTFN + "2")
417+
os.symlink(ABSTFN + "2", ABSTFN + "1")
418+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "1", strict=True)
419+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "2", strict=True)
420+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "1\\x", strict=True)
421+
# Windows eliminates '..' components before resolving links, so the
422+
# following call is not expected to raise.
423+
self.assertPathEqual(ntpath.realpath(ABSTFN + "1\\..", strict=True),
424+
ntpath.dirname(ABSTFN))
425+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "1\\..\\x", strict=True)
426+
os.symlink(ABSTFN + "x", ABSTFN + "y")
427+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "1\\..\\"
428+
+ ntpath.basename(ABSTFN) + "y",
429+
strict=True)
430+
self.assertRaises(OSError, ntpath.realpath,
431+
ABSTFN + "1\\..\\" + ntpath.basename(ABSTFN) + "1",
432+
strict=True)
433+
434+
os.symlink(ntpath.basename(ABSTFN) + "a\\b", ABSTFN + "a")
435+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "a", strict=True)
436+
437+
os.symlink("..\\" + ntpath.basename(ntpath.dirname(ABSTFN))
438+
+ "\\" + ntpath.basename(ABSTFN) + "c", ABSTFN + "c")
439+
self.assertRaises(OSError, ntpath.realpath, ABSTFN + "c", strict=True)
440+
441+
# Test using relative path as well.
442+
self.assertRaises(OSError, ntpath.realpath, ntpath.basename(ABSTFN),
443+
strict=True)
444+
389445
@os_helper.skip_unless_symlink
390446
@unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
391447
def test_realpath_symlink_prefix(self):
@@ -506,34 +562,47 @@ def test_expanduser(self):
506562
env.clear()
507563
tester('ntpath.expanduser("~test")', '~test')
508564

509-
env['HOMEPATH'] = 'eric\\idle'
510565
env['HOMEDRIVE'] = 'C:\\'
511-
tester('ntpath.expanduser("~test")', 'C:\\eric\\test')
512-
tester('ntpath.expanduser("~")', 'C:\\eric\\idle')
566+
env['HOMEPATH'] = 'Users\\eric'
567+
env['USERNAME'] = 'eric'
568+
tester('ntpath.expanduser("~test")', 'C:\\Users\\test')
569+
tester('ntpath.expanduser("~")', 'C:\\Users\\eric')
513570

514571
del env['HOMEDRIVE']
515-
tester('ntpath.expanduser("~test")', 'eric\\test')
516-
tester('ntpath.expanduser("~")', 'eric\\idle')
572+
tester('ntpath.expanduser("~test")', 'Users\\test')
573+
tester('ntpath.expanduser("~")', 'Users\\eric')
517574

518575
env.clear()
519-
env['USERPROFILE'] = 'C:\\eric\\idle'
520-
tester('ntpath.expanduser("~test")', 'C:\\eric\\test')
521-
tester('ntpath.expanduser("~")', 'C:\\eric\\idle')
576+
env['USERPROFILE'] = 'C:\\Users\\eric'
577+
env['USERNAME'] = 'eric'
578+
tester('ntpath.expanduser("~test")', 'C:\\Users\\test')
579+
tester('ntpath.expanduser("~")', 'C:\\Users\\eric')
522580
tester('ntpath.expanduser("~test\\foo\\bar")',
523-
'C:\\eric\\test\\foo\\bar')
581+
'C:\\Users\\test\\foo\\bar')
524582
tester('ntpath.expanduser("~test/foo/bar")',
525-
'C:\\eric\\test/foo/bar')
583+
'C:\\Users\\test/foo/bar')
526584
tester('ntpath.expanduser("~\\foo\\bar")',
527-
'C:\\eric\\idle\\foo\\bar')
585+
'C:\\Users\\eric\\foo\\bar')
528586
tester('ntpath.expanduser("~/foo/bar")',
529-
'C:\\eric\\idle/foo/bar')
587+
'C:\\Users\\eric/foo/bar')
530588

531589
# bpo-36264: ignore `HOME` when set on windows
532590
env.clear()
533591
env['HOME'] = 'F:\\'
534-
env['USERPROFILE'] = 'C:\\eric\\idle'
535-
tester('ntpath.expanduser("~test")', 'C:\\eric\\test')
536-
tester('ntpath.expanduser("~")', 'C:\\eric\\idle')
592+
env['USERPROFILE'] = 'C:\\Users\\eric'
593+
env['USERNAME'] = 'eric'
594+
tester('ntpath.expanduser("~test")', 'C:\\Users\\test')
595+
tester('ntpath.expanduser("~")', 'C:\\Users\\eric')
596+
597+
# bpo-39899: don't guess another user's home directory if
598+
# `%USERNAME% != basename(%USERPROFILE%)`
599+
env.clear()
600+
env['USERPROFILE'] = 'C:\\Users\\eric'
601+
env['USERNAME'] = 'idle'
602+
tester('ntpath.expanduser("~test")', '~test')
603+
tester('ntpath.expanduser("~")', 'C:\\Users\\eric')
604+
605+
537606

538607
@unittest.skipUnless(nt, "abspath requires 'nt' module")
539608
def test_abspath(self):
@@ -728,9 +797,6 @@ class NtCommonTest(test_genericpath.CommonTest, unittest.TestCase):
728797
pathmodule = ntpath
729798
attributes = ['relpath']
730799

731-
def test_expandvars_nonascii(self):
732-
super().test_expandvars_nonascii()
733-
734800
# TODO: RUSTPYTHON
735801
if sys.platform == "linux":
736802
@unittest.expectedFailure
@@ -767,7 +833,7 @@ class PathLikeTests(NtpathTestCase):
767833
path = ntpath
768834

769835
def setUp(self):
770-
self.file_name = os_helper.TESTFN.lower()
836+
self.file_name = os_helper.TESTFN
771837
self.file_path = FakePath(os_helper.TESTFN)
772838
self.addCleanup(os_helper.unlink, self.file_name)
773839
with open(self.file_name, 'xb', 0) as file:
@@ -778,6 +844,8 @@ def _check_function(self, func):
778844

779845
def test_path_normcase(self):
780846
self._check_function(self.path.normcase)
847+
if sys.platform == 'win32':
848+
self.assertEqual(ntpath.normcase('\u03a9\u2126'), 'ωΩ')
781849

782850
def test_path_isabs(self):
783851
self._check_function(self.path.isabs)

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