diff options
Diffstat (limited to 'Lib/test/test_posix.py')
| -rw-r--r-- | Lib/test/test_posix.py | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py index f57c88234b..a522717751 100644 --- a/Lib/test/test_posix.py +++ b/Lib/test/test_posix.py @@ -1925,6 +1925,233 @@ class TestPosixSpawnP(unittest.TestCase, _PosixSpawnMixin): assert_python_ok(*args, PATH=path) +@unittest.skipUnless(sys.platform == "darwin", "test weak linking on macOS") +class TestPosixWeaklinking(unittest.TestCase): + # These test cases verify that weak linking support on macOS works + # as expected. These cases only test new behaviour introduced by weak linking, + # regular behaviour is tested by the normal test cases. + # + # See the section on Weak Linking in Mac/README.txt for more information. + def setUp(self): + import sysconfig + import platform + + config_vars = sysconfig.get_config_vars() + self.available = { nm for nm in config_vars if nm.startswith("HAVE_") and config_vars[nm] } + self.mac_ver = tuple(int(part) for part in platform.mac_ver()[0].split(".")) + + def _verify_available(self, name): + if name not in self.available: + raise unittest.SkipTest(f"{name} not weak-linked") + + def test_pwritev(self): + self._verify_available("HAVE_PWRITEV") + if self.mac_ver >= (10, 16): + self.assertTrue(hasattr(os, "pwritev"), "os.pwritev is not available") + self.assertTrue(hasattr(os, "preadv"), "os.readv is not available") + + else: + self.assertFalse(hasattr(os, "pwritev"), "os.pwritev is available") + self.assertFalse(hasattr(os, "preadv"), "os.readv is available") + + def test_stat(self): + self._verify_available("HAVE_FSTATAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_FSTATAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_FSTATAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.stat("file", dir_fd=0) + + def test_access(self): + self._verify_available("HAVE_FACCESSAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_FACCESSAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_FACCESSAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.access("file", os.R_OK, dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "follow_symlinks unavailable"): + os.access("file", os.R_OK, follow_symlinks=False) + + with self.assertRaisesRegex(NotImplementedError, "effective_ids unavailable"): + os.access("file", os.R_OK, effective_ids=True) + + def test_chmod(self): + self._verify_available("HAVE_FCHMODAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_FCHMODAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_FCHMODAT", posix._have_functions) + self.assertIn("HAVE_LCHMOD", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.chmod("file", 0o644, dir_fd=0) + + def test_chown(self): + self._verify_available("HAVE_FCHOWNAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_FCHOWNAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_FCHOWNAT", posix._have_functions) + self.assertIn("HAVE_LCHOWN", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.chown("file", 0, 0, dir_fd=0) + + def test_link(self): + self._verify_available("HAVE_LINKAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_LINKAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_LINKAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"): + os.link("source", "target", src_dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "dst_dir_fd unavailable"): + os.link("source", "target", dst_dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "src_dir_fd unavailable"): + os.link("source", "target", src_dir_fd=0, dst_dir_fd=0) + + # issue 41355: !HAVE_LINKAT code path ignores the follow_symlinks flag + with os_helper.temp_dir() as base_path: + link_path = os.path.join(base_path, "link") + target_path = os.path.join(base_path, "target") + source_path = os.path.join(base_path, "source") + + with open(source_path, "w") as fp: + fp.write("data") + + os.symlink("target", link_path) + + # Calling os.link should fail in the link(2) call, and + # should not reject *follow_symlinks* (to match the + # behaviour you'd get when building on a platform without + # linkat) + with self.assertRaises(FileExistsError): + os.link(source_path, link_path, follow_symlinks=True) + + with self.assertRaises(FileExistsError): + os.link(source_path, link_path, follow_symlinks=False) + + + def test_listdir_scandir(self): + self._verify_available("HAVE_FDOPENDIR") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_FDOPENDIR", posix._have_functions) + + else: + self.assertNotIn("HAVE_FDOPENDIR", posix._have_functions) + + with self.assertRaisesRegex(TypeError, "listdir: path should be string, bytes, os.PathLike or None, not int"): + os.listdir(0) + + with self.assertRaisesRegex(TypeError, "scandir: path should be string, bytes, os.PathLike or None, not int"): + os.scandir(0) + + def test_mkdir(self): + self._verify_available("HAVE_MKDIRAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_MKDIRAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_MKDIRAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.mkdir("dir", dir_fd=0) + + def test_rename_replace(self): + self._verify_available("HAVE_RENAMEAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_RENAMEAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_RENAMEAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): + os.rename("a", "b", src_dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): + os.rename("a", "b", dst_dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): + os.replace("a", "b", src_dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "src_dir_fd and dst_dir_fd unavailable"): + os.replace("a", "b", dst_dir_fd=0) + + def test_unlink_rmdir(self): + self._verify_available("HAVE_UNLINKAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_UNLINKAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_UNLINKAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.unlink("path", dir_fd=0) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.rmdir("path", dir_fd=0) + + def test_open(self): + self._verify_available("HAVE_OPENAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_OPENAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_OPENAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.open("path", os.O_RDONLY, dir_fd=0) + + def test_readlink(self): + self._verify_available("HAVE_READLINKAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_READLINKAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_READLINKAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.readlink("path", dir_fd=0) + + def test_symlink(self): + self._verify_available("HAVE_SYMLINKAT") + if self.mac_ver >= (10, 10): + self.assertIn("HAVE_SYMLINKAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_SYMLINKAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.symlink("a", "b", dir_fd=0) + + def test_utime(self): + self._verify_available("HAVE_FUTIMENS") + self._verify_available("HAVE_UTIMENSAT") + if self.mac_ver >= (10, 13): + self.assertIn("HAVE_FUTIMENS", posix._have_functions) + self.assertIn("HAVE_UTIMENSAT", posix._have_functions) + + else: + self.assertNotIn("HAVE_FUTIMENS", posix._have_functions) + self.assertNotIn("HAVE_UTIMENSAT", posix._have_functions) + + with self.assertRaisesRegex(NotImplementedError, "dir_fd unavailable"): + os.utime("path", dir_fd=0) + + def test_main(): try: support.run_unittest( @@ -1932,6 +2159,7 @@ def test_main(): PosixGroupsTester, TestPosixSpawn, TestPosixSpawnP, + TestPosixWeaklinking ) finally: support.reap_children() |