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352 lines
13 KiB
Python
352 lines
13 KiB
Python
"Test posix functions"
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from test import support
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# Skip these tests if there is no posix module.
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posix = support.import_module('posix')
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import errno
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import time
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import os
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import pwd
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import shutil
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import unittest
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import warnings
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class PosixTester(unittest.TestCase):
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def setUp(self):
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# create empty file
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fp = open(support.TESTFN, 'w+')
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fp.close()
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self._warnings_manager = support.check_warnings()
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self._warnings_manager.__enter__()
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warnings.filterwarnings('ignore', '.* potential security risk .*',
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RuntimeWarning)
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def tearDown(self):
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support.unlink(support.TESTFN)
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self._warnings_manager.__exit__(None, None, None)
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def testNoArgFunctions(self):
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# test posix functions which take no arguments and have
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# no side-effects which we need to cleanup (e.g., fork, wait, abort)
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NO_ARG_FUNCTIONS = [ "ctermid", "getcwd", "getcwdb", "uname",
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"times", "getloadavg",
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"getegid", "geteuid", "getgid", "getgroups",
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"getpid", "getpgrp", "getppid", "getuid",
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]
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for name in NO_ARG_FUNCTIONS:
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posix_func = getattr(posix, name, None)
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if posix_func is not None:
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posix_func()
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self.assertRaises(TypeError, posix_func, 1)
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if hasattr(posix, 'getresuid'):
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def test_getresuid(self):
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user_ids = posix.getresuid()
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self.assertEqual(len(user_ids), 3)
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for val in user_ids:
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self.assertGreaterEqual(val, 0)
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if hasattr(posix, 'getresgid'):
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def test_getresgid(self):
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group_ids = posix.getresgid()
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self.assertEqual(len(group_ids), 3)
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for val in group_ids:
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self.assertGreaterEqual(val, 0)
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if hasattr(posix, 'setresuid'):
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def test_setresuid(self):
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current_user_ids = posix.getresuid()
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self.assertIsNone(posix.setresuid(*current_user_ids))
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# -1 means don't change that value.
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self.assertIsNone(posix.setresuid(-1, -1, -1))
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def test_setresuid_exception(self):
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# Don't do this test if someone is silly enough to run us as root.
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current_user_ids = posix.getresuid()
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if 0 not in current_user_ids:
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new_user_ids = (current_user_ids[0]+1, -1, -1)
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self.assertRaises(OSError, posix.setresuid, *new_user_ids)
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if hasattr(posix, 'setresgid'):
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def test_setresgid(self):
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current_group_ids = posix.getresgid()
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self.assertIsNone(posix.setresgid(*current_group_ids))
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# -1 means don't change that value.
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self.assertIsNone(posix.setresgid(-1, -1, -1))
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def test_setresgid_exception(self):
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# Don't do this test if someone is silly enough to run us as root.
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current_group_ids = posix.getresgid()
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if 0 not in current_group_ids:
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new_group_ids = (current_group_ids[0]+1, -1, -1)
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self.assertRaises(OSError, posix.setresgid, *new_group_ids)
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@unittest.skipUnless(hasattr(posix, 'initgroups'),
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"test needs os.initgroups()")
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def test_initgroups(self):
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# It takes a string and an integer; check that it raises a TypeError
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# for other argument lists.
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self.assertRaises(TypeError, posix.initgroups)
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self.assertRaises(TypeError, posix.initgroups, None)
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self.assertRaises(TypeError, posix.initgroups, 3, "foo")
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self.assertRaises(TypeError, posix.initgroups, "foo", 3, object())
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# If a non-privileged user invokes it, it should fail with OSError
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# EPERM.
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if os.getuid() != 0:
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name = pwd.getpwuid(posix.getuid()).pw_name
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try:
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posix.initgroups(name, 13)
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except OSError as e:
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self.assertEquals(e.errno, errno.EPERM)
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else:
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self.fail("Expected OSError to be raised by initgroups")
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def test_statvfs(self):
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if hasattr(posix, 'statvfs'):
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self.assertTrue(posix.statvfs(os.curdir))
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def test_fstatvfs(self):
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if hasattr(posix, 'fstatvfs'):
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fp = open(support.TESTFN)
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try:
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self.assertTrue(posix.fstatvfs(fp.fileno()))
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finally:
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fp.close()
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def test_ftruncate(self):
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if hasattr(posix, 'ftruncate'):
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fp = open(support.TESTFN, 'w+')
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try:
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# we need to have some data to truncate
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fp.write('test')
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fp.flush()
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posix.ftruncate(fp.fileno(), 0)
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finally:
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fp.close()
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def test_dup(self):
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if hasattr(posix, 'dup'):
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fp = open(support.TESTFN)
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try:
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fd = posix.dup(fp.fileno())
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self.assertIsInstance(fd, int)
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os.close(fd)
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finally:
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fp.close()
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def test_confstr(self):
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if hasattr(posix, 'confstr'):
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self.assertRaises(ValueError, posix.confstr, "CS_garbage")
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self.assertEqual(len(posix.confstr("CS_PATH")) > 0, True)
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def test_dup2(self):
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if hasattr(posix, 'dup2'):
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fp1 = open(support.TESTFN)
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fp2 = open(support.TESTFN)
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try:
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posix.dup2(fp1.fileno(), fp2.fileno())
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finally:
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fp1.close()
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fp2.close()
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def test_osexlock(self):
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if hasattr(posix, "O_EXLOCK"):
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fd = os.open(support.TESTFN,
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os.O_WRONLY|os.O_EXLOCK|os.O_CREAT)
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self.assertRaises(OSError, os.open, support.TESTFN,
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os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK)
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os.close(fd)
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if hasattr(posix, "O_SHLOCK"):
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fd = os.open(support.TESTFN,
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os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
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self.assertRaises(OSError, os.open, support.TESTFN,
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os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK)
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os.close(fd)
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def test_osshlock(self):
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if hasattr(posix, "O_SHLOCK"):
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fd1 = os.open(support.TESTFN,
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os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
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fd2 = os.open(support.TESTFN,
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os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
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os.close(fd2)
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os.close(fd1)
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if hasattr(posix, "O_EXLOCK"):
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fd = os.open(support.TESTFN,
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os.O_WRONLY|os.O_SHLOCK|os.O_CREAT)
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self.assertRaises(OSError, os.open, support.TESTFN,
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os.O_RDONLY|os.O_EXLOCK|os.O_NONBLOCK)
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os.close(fd)
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def test_fstat(self):
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if hasattr(posix, 'fstat'):
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fp = open(support.TESTFN)
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try:
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self.assertTrue(posix.fstat(fp.fileno()))
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finally:
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fp.close()
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def test_stat(self):
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if hasattr(posix, 'stat'):
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self.assertTrue(posix.stat(support.TESTFN))
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def _test_all_chown_common(self, chown_func, first_param):
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"""Common code for chown, fchown and lchown tests."""
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if os.getuid() == 0:
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try:
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# Many linux distros have a nfsnobody user as MAX_UID-2
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# that makes a good test case for signedness issues.
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# http://bugs.python.org/issue1747858
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# This part of the test only runs when run as root.
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# Only scary people run their tests as root.
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ent = pwd.getpwnam('nfsnobody')
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chown_func(first_param, ent.pw_uid, ent.pw_gid)
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except KeyError:
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pass
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else:
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# non-root cannot chown to root, raises OSError
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self.assertRaises(OSError, chown_func,
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first_param, 0, 0)
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# test a successful chown call
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chown_func(first_param, os.getuid(), os.getgid())
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@unittest.skipUnless(hasattr(posix, 'chown'), "test needs os.chown()")
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def test_chown(self):
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# raise an OSError if the file does not exist
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os.unlink(support.TESTFN)
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self.assertRaises(OSError, posix.chown, support.TESTFN, -1, -1)
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# re-create the file
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open(support.TESTFN, 'w').close()
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self._test_all_chown_common(posix.chown, support.TESTFN)
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@unittest.skipUnless(hasattr(posix, 'fchown'), "test needs os.fchown()")
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def test_fchown(self):
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os.unlink(support.TESTFN)
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# re-create the file
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test_file = open(support.TESTFN, 'w')
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try:
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fd = test_file.fileno()
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self._test_all_chown_common(posix.fchown, fd)
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finally:
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test_file.close()
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@unittest.skipUnless(hasattr(posix, 'lchown'), "test needs os.lchown()")
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def test_lchown(self):
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os.unlink(support.TESTFN)
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# create a symlink
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os.symlink('/tmp/dummy-symlink-target', support.TESTFN)
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self._test_all_chown_common(posix.lchown, support.TESTFN)
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def test_chdir(self):
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if hasattr(posix, 'chdir'):
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posix.chdir(os.curdir)
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self.assertRaises(OSError, posix.chdir, support.TESTFN)
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def test_lsdir(self):
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if hasattr(posix, 'lsdir'):
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self.assertIn(support.TESTFN, posix.lsdir(os.curdir))
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def test_access(self):
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if hasattr(posix, 'access'):
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self.assertTrue(posix.access(support.TESTFN, os.R_OK))
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def test_umask(self):
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if hasattr(posix, 'umask'):
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old_mask = posix.umask(0)
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self.assertIsInstance(old_mask, int)
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posix.umask(old_mask)
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def test_strerror(self):
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if hasattr(posix, 'strerror'):
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self.assertTrue(posix.strerror(0))
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def test_pipe(self):
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if hasattr(posix, 'pipe'):
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reader, writer = posix.pipe()
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os.close(reader)
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os.close(writer)
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def test_utime(self):
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if hasattr(posix, 'utime'):
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now = time.time()
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posix.utime(support.TESTFN, None)
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self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None))
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self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None))
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self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now))
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posix.utime(support.TESTFN, (int(now), int(now)))
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posix.utime(support.TESTFN, (now, now))
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def test_chflags(self):
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if hasattr(posix, 'chflags'):
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st = os.stat(support.TESTFN)
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if hasattr(st, 'st_flags'):
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posix.chflags(support.TESTFN, st.st_flags)
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def test_lchflags(self):
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if hasattr(posix, 'lchflags'):
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st = os.stat(support.TESTFN)
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if hasattr(st, 'st_flags'):
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posix.lchflags(support.TESTFN, st.st_flags)
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def test_environ(self):
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if os.name == "nt":
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item_type = str
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else:
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item_type = bytes
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for k, v in posix.environ.items():
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self.assertEqual(type(k), item_type)
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self.assertEqual(type(v), item_type)
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def test_getcwd_long_pathnames(self):
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if hasattr(posix, 'getcwd'):
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dirname = 'getcwd-test-directory-0123456789abcdef-01234567890abcdef'
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curdir = os.getcwd()
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base_path = os.path.abspath(support.TESTFN) + '.getcwd'
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try:
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os.mkdir(base_path)
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os.chdir(base_path)
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except:
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# Just returning nothing instead of the SkipTest exception,
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# because the test results in Error in that case.
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# Is that ok?
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# raise unittest.SkipTest("cannot create directory for testing")
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return
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def _create_and_do_getcwd(dirname, current_path_length = 0):
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try:
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os.mkdir(dirname)
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except:
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raise unittest.SkipTest("mkdir cannot create directory sufficiently deep for getcwd test")
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os.chdir(dirname)
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try:
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os.getcwd()
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if current_path_length < 1027:
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_create_and_do_getcwd(dirname, current_path_length + len(dirname) + 1)
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finally:
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os.chdir('..')
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os.rmdir(dirname)
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_create_and_do_getcwd(dirname)
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finally:
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os.chdir(curdir)
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support.rmtree(base_path)
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def test_main():
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support.run_unittest(PosixTester)
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if __name__ == '__main__':
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test_main()
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