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Issue #15301: Enhance os.*chown() testing. Based on patch by Larry Hastings.

This commit is contained in:
Serhiy Storchaka 2013-02-20 19:43:05 +02:00
parent 1758d9cf8e f0602062b6
commit 07342983ce
1 changed files with 41 additions and 23 deletions
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64
Lib/test/test_posix.py
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@ -406,30 +406,42 @@ class PosixTester(unittest.TestCase):
def _test_all_chown_common(self, chown_func, first_param, stat_func):
"""Common code for chown, fchown and lchown tests."""
def check_stat():
def check_stat(uid, gid):
if stat_func is not None:
stat = stat_func(first_param)
self.assertEqual(stat.st_uid, os.getuid())
self.assertEqual(stat.st_gid, os.getgid())
self.assertEqual(stat.st_uid, uid)
self.assertEqual(stat.st_gid, gid)
uid = os.getuid()
gid = os.getgid()
# test a successful chown call
chown_func(first_param, os.getuid(), os.getgid())
check_stat()
chown_func(first_param, -1, os.getgid())
check_stat()
chown_func(first_param, os.getuid(), -1)
check_stat()
chown_func(first_param, uid, gid)
check_stat(uid, gid)
chown_func(first_param, -1, gid)
check_stat(uid, gid)
chown_func(first_param, uid, -1)
check_stat(uid, gid)
if os.getuid() == 0:
try:
# Many linux distros have a nfsnobody user as MAX_UID-2
# that makes a good test case for signedness issues.
# http://bugs.python.org/issue1747858
# This part of the test only runs when run as root.
# Only scary people run their tests as root.
ent = pwd.getpwnam('nfsnobody')
chown_func(first_param, ent.pw_uid, ent.pw_gid)
except KeyError:
pass
if uid == 0:
# Try an amusingly large uid/gid to make sure we handle
# large unsigned values. (chown lets you use any
# uid/gid you like, even if they aren't defined.)
#
# This problem keeps coming up:
# http://bugs.python.org/issue1747858
# http://bugs.python.org/issue4591
# http://bugs.python.org/issue15301
# Hopefully the fix in 4591 fixes it for good!
#
# This part of the test only runs when run as root.
# Only scary people run their tests as root.
big_value = 2**31
chown_func(first_param, big_value, big_value)
check_stat(big_value, big_value)
chown_func(first_param, -1, -1)
check_stat(big_value, big_value)
chown_func(first_param, uid, gid)
check_stat(uid, gid)
elif platform.system() in ('HP-UX', 'SunOS'):
# HP-UX and Solaris can allow a non-root user to chown() to root
# (issue #5113)
@ -438,11 +450,17 @@ class PosixTester(unittest.TestCase):
else:
# non-root cannot chown to root, raises OSError
self.assertRaises(OSError, chown_func, first_param, 0, 0)
check_stat()
check_stat(uid, gid)
self.assertRaises(OSError, chown_func, first_param, -1, 0)
check_stat()
check_stat(uid, gid)
self.assertRaises(OSError, chown_func, first_param, 0, -1)
check_stat()
check_stat(uid, gid)
# test illegal types
for t in str, float:
self.assertRaises(TypeError, chown_func, first_param, t(uid), gid)
check_stat(uid, gid)
self.assertRaises(TypeError, chown_func, first_param, uid, t(gid))
check_stat(uid, gid)
@unittest.skipUnless(hasattr(posix, 'chown'), "test needs os.chown()")
def test_chown(self):