| "Test posix functions" |
| |
| from test import support |
| |
| # Skip these tests if there is no posix module. |
| posix = support.import_module('posix') |
| |
| import errno |
| import sys |
| import time |
| import os |
| import platform |
| import pwd |
| import shutil |
| import stat |
| import tempfile |
| import unittest |
| import warnings |
| |
| _DUMMY_SYMLINK = os.path.join(tempfile.gettempdir(), |
| support.TESTFN + '-dummy-symlink') |
| |
| class PosixTester(unittest.TestCase): |
| |
| def setUp(self): |
| # create empty file |
| fp = open(support.TESTFN, 'w+') |
| fp.close() |
| self.teardown_files = [ support.TESTFN ] |
| self._warnings_manager = support.check_warnings() |
| self._warnings_manager.__enter__() |
| warnings.filterwarnings('ignore', '.* potential security risk .*', |
| RuntimeWarning) |
| |
| def tearDown(self): |
| for teardown_file in self.teardown_files: |
| support.unlink(teardown_file) |
| self._warnings_manager.__exit__(None, None, None) |
| |
| def testNoArgFunctions(self): |
| # test posix functions which take no arguments and have |
| # no side-effects which we need to cleanup (e.g., fork, wait, abort) |
| NO_ARG_FUNCTIONS = [ "ctermid", "getcwd", "getcwdb", "uname", |
| "times", "getloadavg", |
| "getegid", "geteuid", "getgid", "getgroups", |
| "getpid", "getpgrp", "getppid", "getuid", "sync", |
| ] |
| |
| for name in NO_ARG_FUNCTIONS: |
| posix_func = getattr(posix, name, None) |
| if posix_func is not None: |
| posix_func() |
| self.assertRaises(TypeError, posix_func, 1) |
| |
| @unittest.skipUnless(hasattr(posix, 'getresuid'), |
| 'test needs posix.getresuid()') |
| def test_getresuid(self): |
| user_ids = posix.getresuid() |
| self.assertEqual(len(user_ids), 3) |
| for val in user_ids: |
| self.assertGreaterEqual(val, 0) |
| |
| @unittest.skipUnless(hasattr(posix, 'getresgid'), |
| 'test needs posix.getresgid()') |
| def test_getresgid(self): |
| group_ids = posix.getresgid() |
| self.assertEqual(len(group_ids), 3) |
| for val in group_ids: |
| self.assertGreaterEqual(val, 0) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresuid'), |
| 'test needs posix.setresuid()') |
| def test_setresuid(self): |
| current_user_ids = posix.getresuid() |
| self.assertIsNone(posix.setresuid(*current_user_ids)) |
| # -1 means don't change that value. |
| self.assertIsNone(posix.setresuid(-1, -1, -1)) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresuid'), |
| 'test needs posix.setresuid()') |
| def test_setresuid_exception(self): |
| # Don't do this test if someone is silly enough to run us as root. |
| current_user_ids = posix.getresuid() |
| if 0 not in current_user_ids: |
| new_user_ids = (current_user_ids[0]+1, -1, -1) |
| self.assertRaises(OSError, posix.setresuid, *new_user_ids) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresgid'), |
| 'test needs posix.setresgid()') |
| def test_setresgid(self): |
| current_group_ids = posix.getresgid() |
| self.assertIsNone(posix.setresgid(*current_group_ids)) |
| # -1 means don't change that value. |
| self.assertIsNone(posix.setresgid(-1, -1, -1)) |
| |
| @unittest.skipUnless(hasattr(posix, 'setresgid'), |
| 'test needs posix.setresgid()') |
| def test_setresgid_exception(self): |
| # Don't do this test if someone is silly enough to run us as root. |
| current_group_ids = posix.getresgid() |
| if 0 not in current_group_ids: |
| new_group_ids = (current_group_ids[0]+1, -1, -1) |
| self.assertRaises(OSError, posix.setresgid, *new_group_ids) |
| |
| @unittest.skipUnless(hasattr(posix, 'initgroups'), |
| "test needs os.initgroups()") |
| def test_initgroups(self): |
| # It takes a string and an integer; check that it raises a TypeError |
| # for other argument lists. |
| self.assertRaises(TypeError, posix.initgroups) |
| self.assertRaises(TypeError, posix.initgroups, None) |
| self.assertRaises(TypeError, posix.initgroups, 3, "foo") |
| self.assertRaises(TypeError, posix.initgroups, "foo", 3, object()) |
| |
| # If a non-privileged user invokes it, it should fail with OSError |
| # EPERM. |
| if os.getuid() != 0: |
| try: |
| name = pwd.getpwuid(posix.getuid()).pw_name |
| except KeyError: |
| # the current UID may not have a pwd entry |
| raise unittest.SkipTest("need a pwd entry") |
| try: |
| posix.initgroups(name, 13) |
| except OSError as e: |
| self.assertEqual(e.errno, errno.EPERM) |
| else: |
| self.fail("Expected OSError to be raised by initgroups") |
| |
| @unittest.skipUnless(hasattr(posix, 'statvfs'), |
| 'test needs posix.statvfs()') |
| def test_statvfs(self): |
| self.assertTrue(posix.statvfs(os.curdir)) |
| |
| @unittest.skipUnless(hasattr(posix, 'fstatvfs'), |
| 'test needs posix.fstatvfs()') |
| def test_fstatvfs(self): |
| fp = open(support.TESTFN) |
| try: |
| self.assertTrue(posix.fstatvfs(fp.fileno())) |
| self.assertTrue(posix.statvfs(fp.fileno())) |
| finally: |
| fp.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'ftruncate'), |
| 'test needs posix.ftruncate()') |
| def test_ftruncate(self): |
| fp = open(support.TESTFN, 'w+') |
| try: |
| # we need to have some data to truncate |
| fp.write('test') |
| fp.flush() |
| posix.ftruncate(fp.fileno(), 0) |
| finally: |
| fp.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'truncate'), "test needs posix.truncate()") |
| def test_truncate(self): |
| with open(support.TESTFN, 'w') as fp: |
| fp.write('test') |
| fp.flush() |
| posix.truncate(support.TESTFN, 0) |
| |
| @unittest.skipUnless(getattr(os, 'execve', None) in os.supports_fd, "test needs execve() to support the fd parameter") |
| @unittest.skipUnless(hasattr(os, 'fork'), "test needs os.fork()") |
| @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()") |
| def test_fexecve(self): |
| fp = os.open(sys.executable, os.O_RDONLY) |
| try: |
| pid = os.fork() |
| if pid == 0: |
| os.chdir(os.path.split(sys.executable)[0]) |
| posix.execve(fp, [sys.executable, '-c', 'pass'], os.environ) |
| else: |
| self.assertEqual(os.waitpid(pid, 0), (pid, 0)) |
| finally: |
| os.close(fp) |
| |
| @unittest.skipUnless(hasattr(posix, 'waitid'), "test needs posix.waitid()") |
| @unittest.skipUnless(hasattr(os, 'fork'), "test needs os.fork()") |
| def test_waitid(self): |
| pid = os.fork() |
| if pid == 0: |
| os.chdir(os.path.split(sys.executable)[0]) |
| posix.execve(sys.executable, [sys.executable, '-c', 'pass'], os.environ) |
| else: |
| res = posix.waitid(posix.P_PID, pid, posix.WEXITED) |
| self.assertEqual(pid, res.si_pid) |
| |
| @unittest.skipUnless(hasattr(posix, 'lockf'), "test needs posix.lockf()") |
| def test_lockf(self): |
| fd = os.open(support.TESTFN, os.O_WRONLY | os.O_CREAT) |
| try: |
| os.write(fd, b'test') |
| os.lseek(fd, 0, os.SEEK_SET) |
| posix.lockf(fd, posix.F_LOCK, 4) |
| # section is locked |
| posix.lockf(fd, posix.F_ULOCK, 4) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pread'), "test needs posix.pread()") |
| def test_pread(self): |
| fd = os.open(support.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test') |
| os.lseek(fd, 0, os.SEEK_SET) |
| self.assertEqual(b'es', posix.pread(fd, 2, 1)) |
| # the first pread() shouldn't disturb the file offset |
| self.assertEqual(b'te', posix.read(fd, 2)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'pwrite'), "test needs posix.pwrite()") |
| def test_pwrite(self): |
| fd = os.open(support.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test') |
| os.lseek(fd, 0, os.SEEK_SET) |
| posix.pwrite(fd, b'xx', 1) |
| self.assertEqual(b'txxt', posix.read(fd, 4)) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'posix_fallocate'), |
| "test needs posix.posix_fallocate()") |
| def test_posix_fallocate(self): |
| fd = os.open(support.TESTFN, os.O_WRONLY | os.O_CREAT) |
| try: |
| posix.posix_fallocate(fd, 0, 10) |
| except OSError as inst: |
| # issue10812, ZFS doesn't appear to support posix_fallocate, |
| # so skip Solaris-based since they are likely to have ZFS. |
| if inst.errno != errno.EINVAL or not sys.platform.startswith("sunos"): |
| raise |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'posix_fadvise'), |
| "test needs posix.posix_fadvise()") |
| def test_posix_fadvise(self): |
| fd = os.open(support.TESTFN, os.O_RDONLY) |
| try: |
| posix.posix_fadvise(fd, 0, 0, posix.POSIX_FADV_WILLNEED) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(os.utime in os.supports_fd, "test needs fd support in os.utime") |
| def test_utime_with_fd(self): |
| now = time.time() |
| fd = os.open(support.TESTFN, os.O_RDONLY) |
| try: |
| posix.utime(fd) |
| posix.utime(fd, None) |
| self.assertRaises(TypeError, posix.utime, fd, (None, None)) |
| self.assertRaises(TypeError, posix.utime, fd, (now, None)) |
| self.assertRaises(TypeError, posix.utime, fd, (None, now)) |
| posix.utime(fd, (int(now), int(now))) |
| posix.utime(fd, (now, now)) |
| self.assertRaises(ValueError, posix.utime, fd, (now, now), ns=(now, now)) |
| self.assertRaises(ValueError, posix.utime, fd, (now, 0), ns=(None, None)) |
| self.assertRaises(ValueError, posix.utime, fd, (None, None), ns=(now, 0)) |
| posix.utime(fd, (int(now), int((now - int(now)) * 1e9))) |
| posix.utime(fd, ns=(int(now), int((now - int(now)) * 1e9))) |
| |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(os.utime in os.supports_follow_symlinks, "test needs follow_symlinks support in os.utime") |
| def test_utime_nofollow_symlinks(self): |
| now = time.time() |
| posix.utime(support.TESTFN, None, follow_symlinks=False) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None), follow_symlinks=False) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None), follow_symlinks=False) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now), follow_symlinks=False) |
| posix.utime(support.TESTFN, (int(now), int(now)), follow_symlinks=False) |
| posix.utime(support.TESTFN, (now, now), follow_symlinks=False) |
| posix.utime(support.TESTFN, follow_symlinks=False) |
| |
| @unittest.skipUnless(hasattr(posix, 'writev'), "test needs posix.writev()") |
| def test_writev(self): |
| fd = os.open(support.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| n = os.writev(fd, (b'test1', b'tt2', b't3')) |
| self.assertEqual(n, 10) |
| |
| os.lseek(fd, 0, os.SEEK_SET) |
| self.assertEqual(b'test1tt2t3', posix.read(fd, 10)) |
| |
| # Issue #20113: empty list of buffers should not crash |
| try: |
| size = posix.writev(fd, []) |
| except OSError: |
| # writev(fd, []) raises OSError(22, "Invalid argument") |
| # on OpenIndiana |
| pass |
| else: |
| self.assertEqual(size, 0) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'readv'), "test needs posix.readv()") |
| def test_readv(self): |
| fd = os.open(support.TESTFN, os.O_RDWR | os.O_CREAT) |
| try: |
| os.write(fd, b'test1tt2t3') |
| os.lseek(fd, 0, os.SEEK_SET) |
| buf = [bytearray(i) for i in [5, 3, 2]] |
| self.assertEqual(posix.readv(fd, buf), 10) |
| self.assertEqual([b'test1', b'tt2', b't3'], [bytes(i) for i in buf]) |
| |
| # Issue #20113: empty list of buffers should not crash |
| try: |
| size = posix.readv(fd, []) |
| except OSError: |
| # readv(fd, []) raises OSError(22, "Invalid argument") |
| # on OpenIndiana |
| pass |
| else: |
| self.assertEqual(size, 0) |
| finally: |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'dup'), |
| 'test needs posix.dup()') |
| def test_dup(self): |
| fp = open(support.TESTFN) |
| try: |
| fd = posix.dup(fp.fileno()) |
| self.assertIsInstance(fd, int) |
| os.close(fd) |
| finally: |
| fp.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'confstr'), |
| 'test needs posix.confstr()') |
| def test_confstr(self): |
| self.assertRaises(ValueError, posix.confstr, "CS_garbage") |
| self.assertEqual(len(posix.confstr("CS_PATH")) > 0, True) |
| |
| @unittest.skipUnless(hasattr(posix, 'dup2'), |
| 'test needs posix.dup2()') |
| def test_dup2(self): |
| fp1 = open(support.TESTFN) |
| fp2 = open(support.TESTFN) |
| try: |
| posix.dup2(fp1.fileno(), fp2.fileno()) |
| finally: |
| fp1.close() |
| fp2.close() |
| |
| @unittest.skipUnless(hasattr(os, 'O_CLOEXEC'), "needs os.O_CLOEXEC") |
| @support.requires_linux_version(2, 6, 23) |
| def test_oscloexec(self): |
| fd = os.open(support.TESTFN, os.O_RDONLY|os.O_CLOEXEC) |
| self.addCleanup(os.close, fd) |
| self.assertFalse(os.get_inheritable(fd)) |
| |
| @unittest.skipUnless(hasattr(posix, 'O_EXLOCK'), |
| 'test needs posix.O_EXLOCK') |
| def test_osexlock(self): |
| fd = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_EXLOCK|os.O_CREAT) |
| self.assertRaises(OSError, os.open, support.TESTFN, |
| os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK) |
| os.close(fd) |
| |
| if hasattr(posix, "O_SHLOCK"): |
| fd = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| self.assertRaises(OSError, os.open, support.TESTFN, |
| os.O_WRONLY|os.O_EXLOCK|os.O_NONBLOCK) |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'O_SHLOCK'), |
| 'test needs posix.O_SHLOCK') |
| def test_osshlock(self): |
| fd1 = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| fd2 = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| os.close(fd2) |
| os.close(fd1) |
| |
| if hasattr(posix, "O_EXLOCK"): |
| fd = os.open(support.TESTFN, |
| os.O_WRONLY|os.O_SHLOCK|os.O_CREAT) |
| self.assertRaises(OSError, os.open, support.TESTFN, |
| os.O_RDONLY|os.O_EXLOCK|os.O_NONBLOCK) |
| os.close(fd) |
| |
| @unittest.skipUnless(hasattr(posix, 'fstat'), |
| 'test needs posix.fstat()') |
| def test_fstat(self): |
| fp = open(support.TESTFN) |
| try: |
| self.assertTrue(posix.fstat(fp.fileno())) |
| self.assertTrue(posix.stat(fp.fileno())) |
| |
| self.assertRaisesRegex(TypeError, |
| 'should be string, bytes or integer, not', |
| posix.stat, float(fp.fileno())) |
| finally: |
| fp.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'stat'), |
| 'test needs posix.stat()') |
| def test_stat(self): |
| self.assertTrue(posix.stat(support.TESTFN)) |
| self.assertTrue(posix.stat(os.fsencode(support.TESTFN))) |
| self.assertTrue(posix.stat(bytearray(os.fsencode(support.TESTFN)))) |
| |
| self.assertRaisesRegex(TypeError, |
| 'can\'t specify None for path argument', |
| posix.stat, None) |
| self.assertRaisesRegex(TypeError, |
| 'should be string, bytes or integer, not', |
| posix.stat, list(support.TESTFN)) |
| self.assertRaisesRegex(TypeError, |
| 'should be string, bytes or integer, not', |
| posix.stat, list(os.fsencode(support.TESTFN))) |
| |
| @unittest.skipUnless(hasattr(posix, 'mkfifo'), "don't have mkfifo()") |
| def test_mkfifo(self): |
| support.unlink(support.TESTFN) |
| posix.mkfifo(support.TESTFN, stat.S_IRUSR | stat.S_IWUSR) |
| self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode)) |
| |
| @unittest.skipUnless(hasattr(posix, 'mknod') and hasattr(stat, 'S_IFIFO'), |
| "don't have mknod()/S_IFIFO") |
| def test_mknod(self): |
| # Test using mknod() to create a FIFO (the only use specified |
| # by POSIX). |
| support.unlink(support.TESTFN) |
| mode = stat.S_IFIFO | stat.S_IRUSR | stat.S_IWUSR |
| try: |
| posix.mknod(support.TESTFN, mode, 0) |
| except OSError as e: |
| # Some old systems don't allow unprivileged users to use |
| # mknod(), or only support creating device nodes. |
| self.assertIn(e.errno, (errno.EPERM, errno.EINVAL)) |
| else: |
| self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode)) |
| |
| def _test_all_chown_common(self, chown_func, first_param, stat_func): |
| """Common code for chown, fchown and lchown tests.""" |
| def check_stat(uid, gid): |
| if stat_func is not None: |
| stat = stat_func(first_param) |
| 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, 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 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) |
| raise unittest.SkipTest("Skipping because of non-standard chown() " |
| "behavior") |
| else: |
| # non-root cannot chown to root, raises OSError |
| self.assertRaises(OSError, chown_func, first_param, 0, 0) |
| check_stat(uid, gid) |
| self.assertRaises(OSError, chown_func, first_param, 0, -1) |
| check_stat(uid, gid) |
| if 0 not in os.getgroups(): |
| self.assertRaises(OSError, chown_func, first_param, -1, 0) |
| 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): |
| # raise an OSError if the file does not exist |
| os.unlink(support.TESTFN) |
| self.assertRaises(OSError, posix.chown, support.TESTFN, -1, -1) |
| |
| # re-create the file |
| support.create_empty_file(support.TESTFN) |
| self._test_all_chown_common(posix.chown, support.TESTFN, |
| getattr(posix, 'stat', None)) |
| |
| @unittest.skipUnless(hasattr(posix, 'fchown'), "test needs os.fchown()") |
| def test_fchown(self): |
| os.unlink(support.TESTFN) |
| |
| # re-create the file |
| test_file = open(support.TESTFN, 'w') |
| try: |
| fd = test_file.fileno() |
| self._test_all_chown_common(posix.fchown, fd, |
| getattr(posix, 'fstat', None)) |
| finally: |
| test_file.close() |
| |
| @unittest.skipUnless(hasattr(posix, 'lchown'), "test needs os.lchown()") |
| def test_lchown(self): |
| os.unlink(support.TESTFN) |
| # create a symlink |
| os.symlink(_DUMMY_SYMLINK, support.TESTFN) |
| self._test_all_chown_common(posix.lchown, support.TESTFN, |
| getattr(posix, 'lstat', None)) |
| |
| @unittest.skipUnless(hasattr(posix, 'chdir'), 'test needs posix.chdir()') |
| def test_chdir(self): |
| posix.chdir(os.curdir) |
| self.assertRaises(OSError, posix.chdir, support.TESTFN) |
| |
| def test_listdir(self): |
| self.assertTrue(support.TESTFN in posix.listdir(os.curdir)) |
| |
| def test_listdir_default(self): |
| # When listdir is called without argument, |
| # it's the same as listdir(os.curdir). |
| self.assertTrue(support.TESTFN in posix.listdir()) |
| |
| def test_listdir_bytes(self): |
| # When listdir is called with a bytes object, |
| # the returned strings are of type bytes. |
| self.assertTrue(os.fsencode(support.TESTFN) in posix.listdir(b'.')) |
| |
| @unittest.skipUnless(posix.listdir in os.supports_fd, |
| "test needs fd support for posix.listdir()") |
| def test_listdir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| self.addCleanup(posix.close, f) |
| self.assertEqual( |
| sorted(posix.listdir('.')), |
| sorted(posix.listdir(f)) |
| ) |
| # Check that the fd offset was reset (issue #13739) |
| self.assertEqual( |
| sorted(posix.listdir('.')), |
| sorted(posix.listdir(f)) |
| ) |
| |
| @unittest.skipUnless(hasattr(posix, 'access'), 'test needs posix.access()') |
| def test_access(self): |
| self.assertTrue(posix.access(support.TESTFN, os.R_OK)) |
| |
| @unittest.skipUnless(hasattr(posix, 'umask'), 'test needs posix.umask()') |
| def test_umask(self): |
| old_mask = posix.umask(0) |
| self.assertIsInstance(old_mask, int) |
| posix.umask(old_mask) |
| |
| @unittest.skipUnless(hasattr(posix, 'strerror'), |
| 'test needs posix.strerror()') |
| def test_strerror(self): |
| self.assertTrue(posix.strerror(0)) |
| |
| @unittest.skipUnless(hasattr(posix, 'pipe'), 'test needs posix.pipe()') |
| def test_pipe(self): |
| reader, writer = posix.pipe() |
| os.close(reader) |
| os.close(writer) |
| |
| @unittest.skipUnless(hasattr(os, 'pipe2'), "test needs os.pipe2()") |
| @support.requires_linux_version(2, 6, 27) |
| def test_pipe2(self): |
| self.assertRaises(TypeError, os.pipe2, 'DEADBEEF') |
| self.assertRaises(TypeError, os.pipe2, 0, 0) |
| |
| # try calling with flags = 0, like os.pipe() |
| r, w = os.pipe2(0) |
| os.close(r) |
| os.close(w) |
| |
| # test flags |
| r, w = os.pipe2(os.O_CLOEXEC|os.O_NONBLOCK) |
| self.addCleanup(os.close, r) |
| self.addCleanup(os.close, w) |
| self.assertFalse(os.get_inheritable(r)) |
| self.assertFalse(os.get_inheritable(w)) |
| self.assertFalse(os.get_blocking(r)) |
| self.assertFalse(os.get_blocking(w)) |
| # try reading from an empty pipe: this should fail, not block |
| self.assertRaises(OSError, os.read, r, 1) |
| # try a write big enough to fill-up the pipe: this should either |
| # fail or perform a partial write, not block |
| try: |
| os.write(w, b'x' * support.PIPE_MAX_SIZE) |
| except OSError: |
| pass |
| |
| @support.cpython_only |
| @unittest.skipUnless(hasattr(os, 'pipe2'), "test needs os.pipe2()") |
| @support.requires_linux_version(2, 6, 27) |
| def test_pipe2_c_limits(self): |
| # Issue 15989 |
| import _testcapi |
| self.assertRaises(OverflowError, os.pipe2, _testcapi.INT_MAX + 1) |
| self.assertRaises(OverflowError, os.pipe2, _testcapi.UINT_MAX + 1) |
| |
| @unittest.skipUnless(hasattr(posix, 'utime'), 'test needs posix.utime()') |
| def test_utime(self): |
| now = time.time() |
| posix.utime(support.TESTFN, None) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None)) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None)) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now)) |
| posix.utime(support.TESTFN, (int(now), int(now))) |
| posix.utime(support.TESTFN, (now, now)) |
| |
| def _test_chflags_regular_file(self, chflags_func, target_file, **kwargs): |
| st = os.stat(target_file) |
| self.assertTrue(hasattr(st, 'st_flags')) |
| |
| # ZFS returns EOPNOTSUPP when attempting to set flag UF_IMMUTABLE. |
| flags = st.st_flags | stat.UF_IMMUTABLE |
| try: |
| chflags_func(target_file, flags, **kwargs) |
| except OSError as err: |
| if err.errno != errno.EOPNOTSUPP: |
| raise |
| msg = 'chflag UF_IMMUTABLE not supported by underlying fs' |
| self.skipTest(msg) |
| |
| try: |
| new_st = os.stat(target_file) |
| self.assertEqual(st.st_flags | stat.UF_IMMUTABLE, new_st.st_flags) |
| try: |
| fd = open(target_file, 'w+') |
| except OSError as e: |
| self.assertEqual(e.errno, errno.EPERM) |
| finally: |
| posix.chflags(target_file, st.st_flags) |
| |
| @unittest.skipUnless(hasattr(posix, 'chflags'), 'test needs os.chflags()') |
| def test_chflags(self): |
| self._test_chflags_regular_file(posix.chflags, support.TESTFN) |
| |
| @unittest.skipUnless(hasattr(posix, 'lchflags'), 'test needs os.lchflags()') |
| def test_lchflags_regular_file(self): |
| self._test_chflags_regular_file(posix.lchflags, support.TESTFN) |
| self._test_chflags_regular_file(posix.chflags, support.TESTFN, follow_symlinks=False) |
| |
| @unittest.skipUnless(hasattr(posix, 'lchflags'), 'test needs os.lchflags()') |
| def test_lchflags_symlink(self): |
| testfn_st = os.stat(support.TESTFN) |
| |
| self.assertTrue(hasattr(testfn_st, 'st_flags')) |
| |
| os.symlink(support.TESTFN, _DUMMY_SYMLINK) |
| self.teardown_files.append(_DUMMY_SYMLINK) |
| dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) |
| |
| def chflags_nofollow(path, flags): |
| return posix.chflags(path, flags, follow_symlinks=False) |
| |
| for fn in (posix.lchflags, chflags_nofollow): |
| # ZFS returns EOPNOTSUPP when attempting to set flag UF_IMMUTABLE. |
| flags = dummy_symlink_st.st_flags | stat.UF_IMMUTABLE |
| try: |
| fn(_DUMMY_SYMLINK, flags) |
| except OSError as err: |
| if err.errno != errno.EOPNOTSUPP: |
| raise |
| msg = 'chflag UF_IMMUTABLE not supported by underlying fs' |
| self.skipTest(msg) |
| try: |
| new_testfn_st = os.stat(support.TESTFN) |
| new_dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) |
| |
| self.assertEqual(testfn_st.st_flags, new_testfn_st.st_flags) |
| self.assertEqual(dummy_symlink_st.st_flags | stat.UF_IMMUTABLE, |
| new_dummy_symlink_st.st_flags) |
| finally: |
| fn(_DUMMY_SYMLINK, dummy_symlink_st.st_flags) |
| |
| def test_environ(self): |
| if os.name == "nt": |
| item_type = str |
| else: |
| item_type = bytes |
| for k, v in posix.environ.items(): |
| self.assertEqual(type(k), item_type) |
| self.assertEqual(type(v), item_type) |
| |
| @unittest.skipUnless(hasattr(posix, 'getcwd'), 'test needs posix.getcwd()') |
| def test_getcwd_long_pathnames(self): |
| dirname = 'getcwd-test-directory-0123456789abcdef-01234567890abcdef' |
| curdir = os.getcwd() |
| base_path = os.path.abspath(support.TESTFN) + '.getcwd' |
| |
| try: |
| os.mkdir(base_path) |
| os.chdir(base_path) |
| except: |
| # Just returning nothing instead of the SkipTest exception, because |
| # the test results in Error in that case. Is that ok? |
| # raise unittest.SkipTest("cannot create directory for testing") |
| return |
| |
| def _create_and_do_getcwd(dirname, current_path_length = 0): |
| try: |
| os.mkdir(dirname) |
| except: |
| raise unittest.SkipTest("mkdir cannot create directory sufficiently deep for getcwd test") |
| |
| os.chdir(dirname) |
| try: |
| os.getcwd() |
| if current_path_length < 1027: |
| _create_and_do_getcwd(dirname, current_path_length + len(dirname) + 1) |
| finally: |
| os.chdir('..') |
| os.rmdir(dirname) |
| |
| _create_and_do_getcwd(dirname) |
| |
| finally: |
| os.chdir(curdir) |
| support.rmtree(base_path) |
| |
| @unittest.skipUnless(hasattr(posix, 'getgrouplist'), "test needs posix.getgrouplist()") |
| @unittest.skipUnless(hasattr(pwd, 'getpwuid'), "test needs pwd.getpwuid()") |
| @unittest.skipUnless(hasattr(os, 'getuid'), "test needs os.getuid()") |
| def test_getgrouplist(self): |
| user = pwd.getpwuid(os.getuid())[0] |
| group = pwd.getpwuid(os.getuid())[3] |
| self.assertIn(group, posix.getgrouplist(user, group)) |
| |
| |
| @unittest.skipUnless(hasattr(os, 'getegid'), "test needs os.getegid()") |
| def test_getgroups(self): |
| with os.popen('id -G 2>/dev/null') as idg: |
| groups = idg.read().strip() |
| ret = idg.close() |
| |
| if ret is not None or not groups: |
| raise unittest.SkipTest("need working 'id -G'") |
| |
| # Issues 16698: OS X ABIs prior to 10.6 have limits on getgroups() |
| if sys.platform == 'darwin': |
| import sysconfig |
| dt = sysconfig.get_config_var('MACOSX_DEPLOYMENT_TARGET') or '10.0' |
| if tuple(int(n) for n in dt.split('.')[0:2]) < (10, 6): |
| raise unittest.SkipTest("getgroups(2) is broken prior to 10.6") |
| |
| # 'id -G' and 'os.getgroups()' should return the same |
| # groups, ignoring order and duplicates. |
| # #10822 - it is implementation defined whether posix.getgroups() |
| # includes the effective gid so we include it anyway, since id -G does |
| self.assertEqual( |
| set([int(x) for x in groups.split()]), |
| set(posix.getgroups() + [posix.getegid()])) |
| |
| # tests for the posix *at functions follow |
| |
| @unittest.skipUnless(os.access in os.supports_dir_fd, "test needs dir_fd support for os.access()") |
| def test_access_dir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| self.assertTrue(posix.access(support.TESTFN, os.R_OK, dir_fd=f)) |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.chmod in os.supports_dir_fd, "test needs dir_fd support in os.chmod()") |
| def test_chmod_dir_fd(self): |
| os.chmod(support.TESTFN, stat.S_IRUSR) |
| |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.chmod(support.TESTFN, stat.S_IRUSR | stat.S_IWUSR, dir_fd=f) |
| |
| s = posix.stat(support.TESTFN) |
| self.assertEqual(s[0] & stat.S_IRWXU, stat.S_IRUSR | stat.S_IWUSR) |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.chown in os.supports_dir_fd, "test needs dir_fd support in os.chown()") |
| def test_chown_dir_fd(self): |
| support.unlink(support.TESTFN) |
| support.create_empty_file(support.TESTFN) |
| |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.chown(support.TESTFN, os.getuid(), os.getgid(), dir_fd=f) |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.stat in os.supports_dir_fd, "test needs dir_fd support in os.stat()") |
| def test_stat_dir_fd(self): |
| support.unlink(support.TESTFN) |
| with open(support.TESTFN, 'w') as outfile: |
| outfile.write("testline\n") |
| |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| s1 = posix.stat(support.TESTFN) |
| s2 = posix.stat(support.TESTFN, dir_fd=f) |
| self.assertEqual(s1, s2) |
| s2 = posix.stat(support.TESTFN, dir_fd=None) |
| self.assertEqual(s1, s2) |
| self.assertRaisesRegex(TypeError, 'should be integer, not', |
| posix.stat, support.TESTFN, dir_fd=posix.getcwd()) |
| self.assertRaisesRegex(TypeError, 'should be integer, not', |
| posix.stat, support.TESTFN, dir_fd=float(f)) |
| self.assertRaises(OverflowError, |
| posix.stat, support.TESTFN, dir_fd=10**20) |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.utime in os.supports_dir_fd, "test needs dir_fd support in os.utime()") |
| def test_utime_dir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| now = time.time() |
| posix.utime(support.TESTFN, None, dir_fd=f) |
| posix.utime(support.TESTFN, dir_fd=f) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, now, dir_fd=f) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None), dir_fd=f) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None), dir_fd=f) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now), dir_fd=f) |
| self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, "x"), dir_fd=f) |
| posix.utime(support.TESTFN, (int(now), int(now)), dir_fd=f) |
| posix.utime(support.TESTFN, (now, now), dir_fd=f) |
| posix.utime(support.TESTFN, |
| (int(now), int((now - int(now)) * 1e9)), dir_fd=f) |
| posix.utime(support.TESTFN, dir_fd=f, |
| times=(int(now), int((now - int(now)) * 1e9))) |
| |
| # try dir_fd and follow_symlinks together |
| if os.utime in os.supports_follow_symlinks: |
| try: |
| posix.utime(support.TESTFN, follow_symlinks=False, dir_fd=f) |
| except ValueError: |
| # whoops! using both together not supported on this platform. |
| pass |
| |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.link in os.supports_dir_fd, "test needs dir_fd support in os.link()") |
| def test_link_dir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.link(support.TESTFN, support.TESTFN + 'link', src_dir_fd=f, dst_dir_fd=f) |
| # should have same inodes |
| self.assertEqual(posix.stat(support.TESTFN)[1], |
| posix.stat(support.TESTFN + 'link')[1]) |
| finally: |
| posix.close(f) |
| support.unlink(support.TESTFN + 'link') |
| |
| @unittest.skipUnless(os.mkdir in os.supports_dir_fd, "test needs dir_fd support in os.mkdir()") |
| def test_mkdir_dir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.mkdir(support.TESTFN + 'dir', dir_fd=f) |
| posix.stat(support.TESTFN + 'dir') # should not raise exception |
| finally: |
| posix.close(f) |
| support.rmtree(support.TESTFN + 'dir') |
| |
| @unittest.skipUnless((os.mknod in os.supports_dir_fd) and hasattr(stat, 'S_IFIFO'), |
| "test requires both stat.S_IFIFO and dir_fd support for os.mknod()") |
| def test_mknod_dir_fd(self): |
| # Test using mknodat() to create a FIFO (the only use specified |
| # by POSIX). |
| support.unlink(support.TESTFN) |
| mode = stat.S_IFIFO | stat.S_IRUSR | stat.S_IWUSR |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.mknod(support.TESTFN, mode, 0, dir_fd=f) |
| except OSError as e: |
| # Some old systems don't allow unprivileged users to use |
| # mknod(), or only support creating device nodes. |
| self.assertIn(e.errno, (errno.EPERM, errno.EINVAL)) |
| else: |
| self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode)) |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.open in os.supports_dir_fd, "test needs dir_fd support in os.open()") |
| def test_open_dir_fd(self): |
| support.unlink(support.TESTFN) |
| with open(support.TESTFN, 'w') as outfile: |
| outfile.write("testline\n") |
| a = posix.open(posix.getcwd(), posix.O_RDONLY) |
| b = posix.open(support.TESTFN, posix.O_RDONLY, dir_fd=a) |
| try: |
| res = posix.read(b, 9).decode(encoding="utf-8") |
| self.assertEqual("testline\n", res) |
| finally: |
| posix.close(a) |
| posix.close(b) |
| |
| @unittest.skipUnless(os.readlink in os.supports_dir_fd, "test needs dir_fd support in os.readlink()") |
| def test_readlink_dir_fd(self): |
| os.symlink(support.TESTFN, support.TESTFN + 'link') |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| self.assertEqual(posix.readlink(support.TESTFN + 'link'), |
| posix.readlink(support.TESTFN + 'link', dir_fd=f)) |
| finally: |
| support.unlink(support.TESTFN + 'link') |
| posix.close(f) |
| |
| @unittest.skipUnless(os.rename in os.supports_dir_fd, "test needs dir_fd support in os.rename()") |
| def test_rename_dir_fd(self): |
| support.unlink(support.TESTFN) |
| support.create_empty_file(support.TESTFN + 'ren') |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.rename(support.TESTFN + 'ren', support.TESTFN, src_dir_fd=f, dst_dir_fd=f) |
| except: |
| posix.rename(support.TESTFN + 'ren', support.TESTFN) |
| raise |
| else: |
| posix.stat(support.TESTFN) # should not raise exception |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.symlink in os.supports_dir_fd, "test needs dir_fd support in os.symlink()") |
| def test_symlink_dir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.symlink(support.TESTFN, support.TESTFN + 'link', dir_fd=f) |
| self.assertEqual(posix.readlink(support.TESTFN + 'link'), support.TESTFN) |
| finally: |
| posix.close(f) |
| support.unlink(support.TESTFN + 'link') |
| |
| @unittest.skipUnless(os.unlink in os.supports_dir_fd, "test needs dir_fd support in os.unlink()") |
| def test_unlink_dir_fd(self): |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| support.create_empty_file(support.TESTFN + 'del') |
| posix.stat(support.TESTFN + 'del') # should not raise exception |
| try: |
| posix.unlink(support.TESTFN + 'del', dir_fd=f) |
| except: |
| support.unlink(support.TESTFN + 'del') |
| raise |
| else: |
| self.assertRaises(OSError, posix.stat, support.TESTFN + 'link') |
| finally: |
| posix.close(f) |
| |
| @unittest.skipUnless(os.mkfifo in os.supports_dir_fd, "test needs dir_fd support in os.mkfifo()") |
| def test_mkfifo_dir_fd(self): |
| support.unlink(support.TESTFN) |
| f = posix.open(posix.getcwd(), posix.O_RDONLY) |
| try: |
| posix.mkfifo(support.TESTFN, stat.S_IRUSR | stat.S_IWUSR, dir_fd=f) |
| self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode)) |
| finally: |
| posix.close(f) |
| |
| requires_sched_h = unittest.skipUnless(hasattr(posix, 'sched_yield'), |
| "don't have scheduling support") |
| requires_sched_affinity = unittest.skipUnless(hasattr(posix, 'sched_setaffinity'), |
| "don't have sched affinity support") |
| |
| @requires_sched_h |
| def test_sched_yield(self): |
| # This has no error conditions (at least on Linux). |
| posix.sched_yield() |
| |
| @requires_sched_h |
| @unittest.skipUnless(hasattr(posix, 'sched_get_priority_max'), |
| "requires sched_get_priority_max()") |
| def test_sched_priority(self): |
| # Round-robin usually has interesting priorities. |
| pol = posix.SCHED_RR |
| lo = posix.sched_get_priority_min(pol) |
| hi = posix.sched_get_priority_max(pol) |
| self.assertIsInstance(lo, int) |
| self.assertIsInstance(hi, int) |
| self.assertGreaterEqual(hi, lo) |
| # OSX evidently just returns 15 without checking the argument. |
| if sys.platform != "darwin": |
| self.assertRaises(OSError, posix.sched_get_priority_min, -23) |
| self.assertRaises(OSError, posix.sched_get_priority_max, -23) |
| |
| @unittest.skipUnless(hasattr(posix, 'sched_setscheduler'), "can't change scheduler") |
| def test_get_and_set_scheduler_and_param(self): |
| possible_schedulers = [sched for name, sched in posix.__dict__.items() |
| if name.startswith("SCHED_")] |
| mine = posix.sched_getscheduler(0) |
| self.assertIn(mine, possible_schedulers) |
| try: |
| parent = posix.sched_getscheduler(os.getppid()) |
| except OSError as e: |
| if e.errno != errno.EPERM: |
| raise |
| else: |
| self.assertIn(parent, possible_schedulers) |
| self.assertRaises(OSError, posix.sched_getscheduler, -1) |
| self.assertRaises(OSError, posix.sched_getparam, -1) |
| param = posix.sched_getparam(0) |
| self.assertIsInstance(param.sched_priority, int) |
| |
| # POSIX states that calling sched_setparam() or sched_setscheduler() on |
| # a process with a scheduling policy other than SCHED_FIFO or SCHED_RR |
| # is implementation-defined: NetBSD and FreeBSD can return EINVAL. |
| if not sys.platform.startswith(('freebsd', 'netbsd')): |
| try: |
| posix.sched_setscheduler(0, mine, param) |
| posix.sched_setparam(0, param) |
| except OSError as e: |
| if e.errno != errno.EPERM: |
| raise |
| self.assertRaises(OSError, posix.sched_setparam, -1, param) |
| |
| self.assertRaises(OSError, posix.sched_setscheduler, -1, mine, param) |
| self.assertRaises(TypeError, posix.sched_setscheduler, 0, mine, None) |
| self.assertRaises(TypeError, posix.sched_setparam, 0, 43) |
| param = posix.sched_param(None) |
| self.assertRaises(TypeError, posix.sched_setparam, 0, param) |
| large = 214748364700 |
| param = posix.sched_param(large) |
| self.assertRaises(OverflowError, posix.sched_setparam, 0, param) |
| param = posix.sched_param(sched_priority=-large) |
| self.assertRaises(OverflowError, posix.sched_setparam, 0, param) |
| |
| @unittest.skipUnless(hasattr(posix, "sched_rr_get_interval"), "no function") |
| def test_sched_rr_get_interval(self): |
| try: |
| interval = posix.sched_rr_get_interval(0) |
| except OSError as e: |
| # This likely means that sched_rr_get_interval is only valid for |
| # processes with the SCHED_RR scheduler in effect. |
| if e.errno != errno.EINVAL: |
| raise |
| self.skipTest("only works on SCHED_RR processes") |
| self.assertIsInstance(interval, float) |
| # Reasonable constraints, I think. |
| self.assertGreaterEqual(interval, 0.) |
| self.assertLess(interval, 1.) |
| |
| @requires_sched_affinity |
| def test_sched_getaffinity(self): |
| mask = posix.sched_getaffinity(0) |
| self.assertIsInstance(mask, set) |
| self.assertGreaterEqual(len(mask), 1) |
| self.assertRaises(OSError, posix.sched_getaffinity, -1) |
| for cpu in mask: |
| self.assertIsInstance(cpu, int) |
| self.assertGreaterEqual(cpu, 0) |
| self.assertLess(cpu, 1 << 32) |
| |
| @requires_sched_affinity |
| def test_sched_setaffinity(self): |
| mask = posix.sched_getaffinity(0) |
| if len(mask) > 1: |
| # Empty masks are forbidden |
| mask.pop() |
| posix.sched_setaffinity(0, mask) |
| self.assertEqual(posix.sched_getaffinity(0), mask) |
| self.assertRaises(OSError, posix.sched_setaffinity, 0, []) |
| self.assertRaises(ValueError, posix.sched_setaffinity, 0, [-10]) |
| self.assertRaises(OverflowError, posix.sched_setaffinity, 0, [1<<128]) |
| self.assertRaises(OSError, posix.sched_setaffinity, -1, mask) |
| |
| def test_rtld_constants(self): |
| # check presence of major RTLD_* constants |
| posix.RTLD_LAZY |
| posix.RTLD_NOW |
| posix.RTLD_GLOBAL |
| posix.RTLD_LOCAL |
| |
| @unittest.skipUnless(hasattr(os, 'SEEK_HOLE'), |
| "test needs an OS that reports file holes") |
| def test_fs_holes(self): |
| # Even if the filesystem doesn't report holes, |
| # if the OS supports it the SEEK_* constants |
| # will be defined and will have a consistent |
| # behaviour: |
| # os.SEEK_DATA = current position |
| # os.SEEK_HOLE = end of file position |
| with open(support.TESTFN, 'r+b') as fp: |
| fp.write(b"hello") |
| fp.flush() |
| size = fp.tell() |
| fno = fp.fileno() |
| try : |
| for i in range(size): |
| self.assertEqual(i, os.lseek(fno, i, os.SEEK_DATA)) |
| self.assertLessEqual(size, os.lseek(fno, i, os.SEEK_HOLE)) |
| self.assertRaises(OSError, os.lseek, fno, size, os.SEEK_DATA) |
| self.assertRaises(OSError, os.lseek, fno, size, os.SEEK_HOLE) |
| except OSError : |
| # Some OSs claim to support SEEK_HOLE/SEEK_DATA |
| # but it is not true. |
| # For instance: |
| # http://lists.freebsd.org/pipermail/freebsd-amd64/2012-January/014332.html |
| raise unittest.SkipTest("OSError raised!") |
| |
| def test_path_error2(self): |
| """ |
| Test functions that call path_error2(), providing two filenames in their exceptions. |
| """ |
| for name in ("rename", "replace", "link"): |
| function = getattr(os, name, None) |
| if function is None: |
| continue |
| |
| for dst in ("noodly2", support.TESTFN): |
| try: |
| function('doesnotexistfilename', dst) |
| except OSError as e: |
| self.assertIn("'doesnotexistfilename' -> '{}'".format(dst), str(e)) |
| break |
| else: |
| self.fail("No valid path_error2() test for os." + name) |
| |
| class PosixGroupsTester(unittest.TestCase): |
| |
| def setUp(self): |
| if posix.getuid() != 0: |
| raise unittest.SkipTest("not enough privileges") |
| if not hasattr(posix, 'getgroups'): |
| raise unittest.SkipTest("need posix.getgroups") |
| if sys.platform == 'darwin': |
| raise unittest.SkipTest("getgroups(2) is broken on OSX") |
| self.saved_groups = posix.getgroups() |
| |
| def tearDown(self): |
| if hasattr(posix, 'setgroups'): |
| posix.setgroups(self.saved_groups) |
| elif hasattr(posix, 'initgroups'): |
| name = pwd.getpwuid(posix.getuid()).pw_name |
| posix.initgroups(name, self.saved_groups[0]) |
| |
| @unittest.skipUnless(hasattr(posix, 'initgroups'), |
| "test needs posix.initgroups()") |
| def test_initgroups(self): |
| # find missing group |
| |
| g = max(self.saved_groups or [0]) + 1 |
| name = pwd.getpwuid(posix.getuid()).pw_name |
| posix.initgroups(name, g) |
| self.assertIn(g, posix.getgroups()) |
| |
| @unittest.skipUnless(hasattr(posix, 'setgroups'), |
| "test needs posix.setgroups()") |
| def test_setgroups(self): |
| for groups in [[0], list(range(16))]: |
| posix.setgroups(groups) |
| self.assertListEqual(groups, posix.getgroups()) |
| |
| def test_main(): |
| try: |
| support.run_unittest(PosixTester, PosixGroupsTester) |
| finally: |
| support.reap_children() |
| |
| if __name__ == '__main__': |
| test_main() |