| import itertools | 
 | import os | 
 | import posixpath | 
 | import sys | 
 | import unittest | 
 | import warnings | 
 | from posixpath import realpath, abspath, dirname, basename | 
 | from test import support, test_genericpath | 
 |  | 
 | try: | 
 |     import posix | 
 | except ImportError: | 
 |     posix = None | 
 |  | 
 | # An absolute path to a temporary filename for testing. We can't rely on TESTFN | 
 | # being an absolute path, so we need this. | 
 |  | 
 | ABSTFN = abspath(support.TESTFN) | 
 |  | 
 | def skip_if_ABSTFN_contains_backslash(test): | 
 |     """ | 
 |     On Windows, posixpath.abspath still returns paths with backslashes | 
 |     instead of posix forward slashes. If this is the case, several tests | 
 |     fail, so skip them. | 
 |     """ | 
 |     found_backslash = '\\' in ABSTFN | 
 |     msg = "ABSTFN is not a posix path - tests fail" | 
 |     return [test, unittest.skip(msg)(test)][found_backslash] | 
 |  | 
 | def safe_rmdir(dirname): | 
 |     try: | 
 |         os.rmdir(dirname) | 
 |     except OSError: | 
 |         pass | 
 |  | 
 | class PosixPathTest(unittest.TestCase): | 
 |  | 
 |     def setUp(self): | 
 |         self.tearDown() | 
 |  | 
 |     def tearDown(self): | 
 |         for suffix in ["", "1", "2"]: | 
 |             support.unlink(support.TESTFN + suffix) | 
 |             safe_rmdir(support.TESTFN + suffix) | 
 |  | 
 |     def test_join(self): | 
 |         self.assertEqual(posixpath.join("/foo", "bar", "/bar", "baz"), | 
 |                          "/bar/baz") | 
 |         self.assertEqual(posixpath.join("/foo", "bar", "baz"), "/foo/bar/baz") | 
 |         self.assertEqual(posixpath.join("/foo/", "bar/", "baz/"), | 
 |                          "/foo/bar/baz/") | 
 |  | 
 |         self.assertEqual(posixpath.join(b"/foo", b"bar", b"/bar", b"baz"), | 
 |                          b"/bar/baz") | 
 |         self.assertEqual(posixpath.join(b"/foo", b"bar", b"baz"), | 
 |                          b"/foo/bar/baz") | 
 |         self.assertEqual(posixpath.join(b"/foo/", b"bar/", b"baz/"), | 
 |                          b"/foo/bar/baz/") | 
 |  | 
 |     def test_split(self): | 
 |         self.assertEqual(posixpath.split("/foo/bar"), ("/foo", "bar")) | 
 |         self.assertEqual(posixpath.split("/"), ("/", "")) | 
 |         self.assertEqual(posixpath.split("foo"), ("", "foo")) | 
 |         self.assertEqual(posixpath.split("////foo"), ("////", "foo")) | 
 |         self.assertEqual(posixpath.split("//foo//bar"), ("//foo", "bar")) | 
 |  | 
 |         self.assertEqual(posixpath.split(b"/foo/bar"), (b"/foo", b"bar")) | 
 |         self.assertEqual(posixpath.split(b"/"), (b"/", b"")) | 
 |         self.assertEqual(posixpath.split(b"foo"), (b"", b"foo")) | 
 |         self.assertEqual(posixpath.split(b"////foo"), (b"////", b"foo")) | 
 |         self.assertEqual(posixpath.split(b"//foo//bar"), (b"//foo", b"bar")) | 
 |  | 
 |     def splitextTest(self, path, filename, ext): | 
 |         self.assertEqual(posixpath.splitext(path), (filename, ext)) | 
 |         self.assertEqual(posixpath.splitext("/" + path), ("/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext("abc/" + path), | 
 |                          ("abc/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext("abc.def/" + path), | 
 |                          ("abc.def/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext("/abc.def/" + path), | 
 |                          ("/abc.def/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext(path + "/"), | 
 |                          (filename + ext + "/", "")) | 
 |  | 
 |         path = bytes(path, "ASCII") | 
 |         filename = bytes(filename, "ASCII") | 
 |         ext = bytes(ext, "ASCII") | 
 |  | 
 |         self.assertEqual(posixpath.splitext(path), (filename, ext)) | 
 |         self.assertEqual(posixpath.splitext(b"/" + path), | 
 |                          (b"/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext(b"abc/" + path), | 
 |                          (b"abc/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext(b"abc.def/" + path), | 
 |                          (b"abc.def/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext(b"/abc.def/" + path), | 
 |                          (b"/abc.def/" + filename, ext)) | 
 |         self.assertEqual(posixpath.splitext(path + b"/"), | 
 |                          (filename + ext + b"/", b"")) | 
 |  | 
 |     def test_splitext(self): | 
 |         self.splitextTest("foo.bar", "foo", ".bar") | 
 |         self.splitextTest("foo.boo.bar", "foo.boo", ".bar") | 
 |         self.splitextTest("foo.boo.biff.bar", "foo.boo.biff", ".bar") | 
 |         self.splitextTest(".csh.rc", ".csh", ".rc") | 
 |         self.splitextTest("nodots", "nodots", "") | 
 |         self.splitextTest(".cshrc", ".cshrc", "") | 
 |         self.splitextTest("...manydots", "...manydots", "") | 
 |         self.splitextTest("...manydots.ext", "...manydots", ".ext") | 
 |         self.splitextTest(".", ".", "") | 
 |         self.splitextTest("..", "..", "") | 
 |         self.splitextTest("........", "........", "") | 
 |         self.splitextTest("", "", "") | 
 |  | 
 |     def test_isabs(self): | 
 |         self.assertIs(posixpath.isabs(""), False) | 
 |         self.assertIs(posixpath.isabs("/"), True) | 
 |         self.assertIs(posixpath.isabs("/foo"), True) | 
 |         self.assertIs(posixpath.isabs("/foo/bar"), True) | 
 |         self.assertIs(posixpath.isabs("foo/bar"), False) | 
 |  | 
 |         self.assertIs(posixpath.isabs(b""), False) | 
 |         self.assertIs(posixpath.isabs(b"/"), True) | 
 |         self.assertIs(posixpath.isabs(b"/foo"), True) | 
 |         self.assertIs(posixpath.isabs(b"/foo/bar"), True) | 
 |         self.assertIs(posixpath.isabs(b"foo/bar"), False) | 
 |  | 
 |     def test_basename(self): | 
 |         self.assertEqual(posixpath.basename("/foo/bar"), "bar") | 
 |         self.assertEqual(posixpath.basename("/"), "") | 
 |         self.assertEqual(posixpath.basename("foo"), "foo") | 
 |         self.assertEqual(posixpath.basename("////foo"), "foo") | 
 |         self.assertEqual(posixpath.basename("//foo//bar"), "bar") | 
 |  | 
 |         self.assertEqual(posixpath.basename(b"/foo/bar"), b"bar") | 
 |         self.assertEqual(posixpath.basename(b"/"), b"") | 
 |         self.assertEqual(posixpath.basename(b"foo"), b"foo") | 
 |         self.assertEqual(posixpath.basename(b"////foo"), b"foo") | 
 |         self.assertEqual(posixpath.basename(b"//foo//bar"), b"bar") | 
 |  | 
 |     def test_dirname(self): | 
 |         self.assertEqual(posixpath.dirname("/foo/bar"), "/foo") | 
 |         self.assertEqual(posixpath.dirname("/"), "/") | 
 |         self.assertEqual(posixpath.dirname("foo"), "") | 
 |         self.assertEqual(posixpath.dirname("////foo"), "////") | 
 |         self.assertEqual(posixpath.dirname("//foo//bar"), "//foo") | 
 |  | 
 |         self.assertEqual(posixpath.dirname(b"/foo/bar"), b"/foo") | 
 |         self.assertEqual(posixpath.dirname(b"/"), b"/") | 
 |         self.assertEqual(posixpath.dirname(b"foo"), b"") | 
 |         self.assertEqual(posixpath.dirname(b"////foo"), b"////") | 
 |         self.assertEqual(posixpath.dirname(b"//foo//bar"), b"//foo") | 
 |  | 
 |     def test_islink(self): | 
 |         self.assertIs(posixpath.islink(support.TESTFN + "1"), False) | 
 |         self.assertIs(posixpath.lexists(support.TESTFN + "2"), False) | 
 |         f = open(support.TESTFN + "1", "wb") | 
 |         try: | 
 |             f.write(b"foo") | 
 |             f.close() | 
 |             self.assertIs(posixpath.islink(support.TESTFN + "1"), False) | 
 |             if support.can_symlink(): | 
 |                 os.symlink(support.TESTFN + "1", support.TESTFN + "2") | 
 |                 self.assertIs(posixpath.islink(support.TESTFN + "2"), True) | 
 |                 os.remove(support.TESTFN + "1") | 
 |                 self.assertIs(posixpath.islink(support.TESTFN + "2"), True) | 
 |                 self.assertIs(posixpath.exists(support.TESTFN + "2"), False) | 
 |                 self.assertIs(posixpath.lexists(support.TESTFN + "2"), True) | 
 |         finally: | 
 |             if not f.close(): | 
 |                 f.close() | 
 |  | 
 |     def test_ismount(self): | 
 |         self.assertIs(posixpath.ismount("/"), True) | 
 |         with warnings.catch_warnings(): | 
 |             warnings.simplefilter("ignore", DeprecationWarning) | 
 |             self.assertIs(posixpath.ismount(b"/"), True) | 
 |  | 
 |     def test_ismount_non_existent(self): | 
 |         # Non-existent mountpoint. | 
 |         self.assertIs(posixpath.ismount(ABSTFN), False) | 
 |         try: | 
 |             os.mkdir(ABSTFN) | 
 |             self.assertIs(posixpath.ismount(ABSTFN), False) | 
 |         finally: | 
 |             safe_rmdir(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(support.can_symlink(), | 
 |                          "Test requires symlink support") | 
 |     def test_ismount_symlinks(self): | 
 |         # Symlinks are never mountpoints. | 
 |         try: | 
 |             os.symlink("/", ABSTFN) | 
 |             self.assertIs(posixpath.ismount(ABSTFN), False) | 
 |         finally: | 
 |             os.unlink(ABSTFN) | 
 |  | 
 |     @unittest.skipIf(posix is None, "Test requires posix module") | 
 |     def test_ismount_different_device(self): | 
 |         # Simulate the path being on a different device from its parent by | 
 |         # mocking out st_dev. | 
 |         save_lstat = os.lstat | 
 |         def fake_lstat(path): | 
 |             st_ino = 0 | 
 |             st_dev = 0 | 
 |             if path == ABSTFN: | 
 |                 st_dev = 1 | 
 |                 st_ino = 1 | 
 |             return posix.stat_result((0, st_ino, st_dev, 0, 0, 0, 0, 0, 0, 0)) | 
 |         try: | 
 |             os.lstat = fake_lstat | 
 |             self.assertIs(posixpath.ismount(ABSTFN), True) | 
 |         finally: | 
 |             os.lstat = save_lstat | 
 |  | 
 |     def test_expanduser(self): | 
 |         self.assertEqual(posixpath.expanduser("foo"), "foo") | 
 |         self.assertEqual(posixpath.expanduser(b"foo"), b"foo") | 
 |         try: | 
 |             import pwd | 
 |         except ImportError: | 
 |             pass | 
 |         else: | 
 |             self.assertIsInstance(posixpath.expanduser("~/"), str) | 
 |             self.assertIsInstance(posixpath.expanduser(b"~/"), bytes) | 
 |             # if home directory == root directory, this test makes no sense | 
 |             if posixpath.expanduser("~") != '/': | 
 |                 self.assertEqual( | 
 |                     posixpath.expanduser("~") + "/", | 
 |                     posixpath.expanduser("~/") | 
 |                 ) | 
 |                 self.assertEqual( | 
 |                     posixpath.expanduser(b"~") + b"/", | 
 |                     posixpath.expanduser(b"~/") | 
 |                 ) | 
 |             self.assertIsInstance(posixpath.expanduser("~root/"), str) | 
 |             self.assertIsInstance(posixpath.expanduser("~foo/"), str) | 
 |             self.assertIsInstance(posixpath.expanduser(b"~root/"), bytes) | 
 |             self.assertIsInstance(posixpath.expanduser(b"~foo/"), bytes) | 
 |  | 
 |             with support.EnvironmentVarGuard() as env: | 
 |                 env['HOME'] = '/' | 
 |                 self.assertEqual(posixpath.expanduser("~"), "/") | 
 |                 self.assertEqual(posixpath.expanduser("~/foo"), "/foo") | 
 |                 # expanduser should fall back to using the password database | 
 |                 del env['HOME'] | 
 |                 home = pwd.getpwuid(os.getuid()).pw_dir | 
 |                 # $HOME can end with a trailing /, so strip it (see #17809) | 
 |                 self.assertEqual(posixpath.expanduser("~"), home.rstrip("/")) | 
 |  | 
 |     def test_normpath(self): | 
 |         self.assertEqual(posixpath.normpath(""), ".") | 
 |         self.assertEqual(posixpath.normpath("/"), "/") | 
 |         self.assertEqual(posixpath.normpath("//"), "//") | 
 |         self.assertEqual(posixpath.normpath("///"), "/") | 
 |         self.assertEqual(posixpath.normpath("///foo/.//bar//"), "/foo/bar") | 
 |         self.assertEqual(posixpath.normpath("///foo/.//bar//.//..//.//baz"), | 
 |                          "/foo/baz") | 
 |         self.assertEqual(posixpath.normpath("///..//./foo/.//bar"), "/foo/bar") | 
 |  | 
 |         self.assertEqual(posixpath.normpath(b""), b".") | 
 |         self.assertEqual(posixpath.normpath(b"/"), b"/") | 
 |         self.assertEqual(posixpath.normpath(b"//"), b"//") | 
 |         self.assertEqual(posixpath.normpath(b"///"), b"/") | 
 |         self.assertEqual(posixpath.normpath(b"///foo/.//bar//"), b"/foo/bar") | 
 |         self.assertEqual(posixpath.normpath(b"///foo/.//bar//.//..//.//baz"), | 
 |                          b"/foo/baz") | 
 |         self.assertEqual(posixpath.normpath(b"///..//./foo/.//bar"), | 
 |                          b"/foo/bar") | 
 |  | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_curdir(self): | 
 |         self.assertEqual(realpath('.'), os.getcwd()) | 
 |         self.assertEqual(realpath('./.'), os.getcwd()) | 
 |         self.assertEqual(realpath('/'.join(['.'] * 100)), os.getcwd()) | 
 |  | 
 |         self.assertEqual(realpath(b'.'), os.getcwdb()) | 
 |         self.assertEqual(realpath(b'./.'), os.getcwdb()) | 
 |         self.assertEqual(realpath(b'/'.join([b'.'] * 100)), os.getcwdb()) | 
 |  | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_pardir(self): | 
 |         self.assertEqual(realpath('..'), dirname(os.getcwd())) | 
 |         self.assertEqual(realpath('../..'), dirname(dirname(os.getcwd()))) | 
 |         self.assertEqual(realpath('/'.join(['..'] * 100)), '/') | 
 |  | 
 |         self.assertEqual(realpath(b'..'), dirname(os.getcwdb())) | 
 |         self.assertEqual(realpath(b'../..'), dirname(dirname(os.getcwdb()))) | 
 |         self.assertEqual(realpath(b'/'.join([b'..'] * 100)), b'/') | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_basic(self): | 
 |         # Basic operation. | 
 |         try: | 
 |             os.symlink(ABSTFN+"1", ABSTFN) | 
 |             self.assertEqual(realpath(ABSTFN), ABSTFN+"1") | 
 |         finally: | 
 |             support.unlink(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_relative(self): | 
 |         try: | 
 |             os.symlink(posixpath.relpath(ABSTFN+"1"), ABSTFN) | 
 |             self.assertEqual(realpath(ABSTFN), ABSTFN+"1") | 
 |         finally: | 
 |             support.unlink(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_symlink_loops(self): | 
 |         # Bug #930024, return the path unchanged if we get into an infinite | 
 |         # symlink loop. | 
 |         try: | 
 |             old_path = abspath('.') | 
 |             os.symlink(ABSTFN, ABSTFN) | 
 |             self.assertEqual(realpath(ABSTFN), ABSTFN) | 
 |  | 
 |             os.symlink(ABSTFN+"1", ABSTFN+"2") | 
 |             os.symlink(ABSTFN+"2", ABSTFN+"1") | 
 |             self.assertEqual(realpath(ABSTFN+"1"), ABSTFN+"1") | 
 |             self.assertEqual(realpath(ABSTFN+"2"), ABSTFN+"2") | 
 |  | 
 |             self.assertEqual(realpath(ABSTFN+"1/x"), ABSTFN+"1/x") | 
 |             self.assertEqual(realpath(ABSTFN+"1/.."), dirname(ABSTFN)) | 
 |             self.assertEqual(realpath(ABSTFN+"1/../x"), dirname(ABSTFN) + "/x") | 
 |             os.symlink(ABSTFN+"x", ABSTFN+"y") | 
 |             self.assertEqual(realpath(ABSTFN+"1/../" + basename(ABSTFN) + "y"), | 
 |                              ABSTFN + "y") | 
 |             self.assertEqual(realpath(ABSTFN+"1/../" + basename(ABSTFN) + "1"), | 
 |                              ABSTFN + "1") | 
 |  | 
 |             os.symlink(basename(ABSTFN) + "a/b", ABSTFN+"a") | 
 |             self.assertEqual(realpath(ABSTFN+"a"), ABSTFN+"a/b") | 
 |  | 
 |             os.symlink("../" + basename(dirname(ABSTFN)) + "/" + | 
 |                        basename(ABSTFN) + "c", ABSTFN+"c") | 
 |             self.assertEqual(realpath(ABSTFN+"c"), ABSTFN+"c") | 
 |  | 
 |             # Test using relative path as well. | 
 |             os.chdir(dirname(ABSTFN)) | 
 |             self.assertEqual(realpath(basename(ABSTFN)), ABSTFN) | 
 |         finally: | 
 |             os.chdir(old_path) | 
 |             support.unlink(ABSTFN) | 
 |             support.unlink(ABSTFN+"1") | 
 |             support.unlink(ABSTFN+"2") | 
 |             support.unlink(ABSTFN+"y") | 
 |             support.unlink(ABSTFN+"c") | 
 |             support.unlink(ABSTFN+"a") | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_repeated_indirect_symlinks(self): | 
 |         # Issue #6975. | 
 |         try: | 
 |             os.mkdir(ABSTFN) | 
 |             os.symlink('../' + basename(ABSTFN), ABSTFN + '/self') | 
 |             os.symlink('self/self/self', ABSTFN + '/link') | 
 |             self.assertEqual(realpath(ABSTFN + '/link'), ABSTFN) | 
 |         finally: | 
 |             support.unlink(ABSTFN + '/self') | 
 |             support.unlink(ABSTFN + '/link') | 
 |             safe_rmdir(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_deep_recursion(self): | 
 |         depth = 10 | 
 |         old_path = abspath('.') | 
 |         try: | 
 |             os.mkdir(ABSTFN) | 
 |             for i in range(depth): | 
 |                 os.symlink('/'.join(['%d' % i] * 10), ABSTFN + '/%d' % (i + 1)) | 
 |             os.symlink('.', ABSTFN + '/0') | 
 |             self.assertEqual(realpath(ABSTFN + '/%d' % depth), ABSTFN) | 
 |  | 
 |             # Test using relative path as well. | 
 |             os.chdir(ABSTFN) | 
 |             self.assertEqual(realpath('%d' % depth), ABSTFN) | 
 |         finally: | 
 |             os.chdir(old_path) | 
 |             for i in range(depth + 1): | 
 |                 support.unlink(ABSTFN + '/%d' % i) | 
 |             safe_rmdir(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_resolve_parents(self): | 
 |         # We also need to resolve any symlinks in the parents of a relative | 
 |         # path passed to realpath. E.g.: current working directory is | 
 |         # /usr/doc with 'doc' being a symlink to /usr/share/doc. We call | 
 |         # realpath("a"). This should return /usr/share/doc/a/. | 
 |         try: | 
 |             old_path = abspath('.') | 
 |             os.mkdir(ABSTFN) | 
 |             os.mkdir(ABSTFN + "/y") | 
 |             os.symlink(ABSTFN + "/y", ABSTFN + "/k") | 
 |  | 
 |             os.chdir(ABSTFN + "/k") | 
 |             self.assertEqual(realpath("a"), ABSTFN + "/y/a") | 
 |         finally: | 
 |             os.chdir(old_path) | 
 |             support.unlink(ABSTFN + "/k") | 
 |             safe_rmdir(ABSTFN + "/y") | 
 |             safe_rmdir(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_resolve_before_normalizing(self): | 
 |         # Bug #990669: Symbolic links should be resolved before we | 
 |         # normalize the path. E.g.: if we have directories 'a', 'k' and 'y' | 
 |         # in the following hierarchy: | 
 |         # a/k/y | 
 |         # | 
 |         # and a symbolic link 'link-y' pointing to 'y' in directory 'a', | 
 |         # then realpath("link-y/..") should return 'k', not 'a'. | 
 |         try: | 
 |             old_path = abspath('.') | 
 |             os.mkdir(ABSTFN) | 
 |             os.mkdir(ABSTFN + "/k") | 
 |             os.mkdir(ABSTFN + "/k/y") | 
 |             os.symlink(ABSTFN + "/k/y", ABSTFN + "/link-y") | 
 |  | 
 |             # Absolute path. | 
 |             self.assertEqual(realpath(ABSTFN + "/link-y/.."), ABSTFN + "/k") | 
 |             # Relative path. | 
 |             os.chdir(dirname(ABSTFN)) | 
 |             self.assertEqual(realpath(basename(ABSTFN) + "/link-y/.."), | 
 |                              ABSTFN + "/k") | 
 |         finally: | 
 |             os.chdir(old_path) | 
 |             support.unlink(ABSTFN + "/link-y") | 
 |             safe_rmdir(ABSTFN + "/k/y") | 
 |             safe_rmdir(ABSTFN + "/k") | 
 |             safe_rmdir(ABSTFN) | 
 |  | 
 |     @unittest.skipUnless(hasattr(os, "symlink"), | 
 |                          "Missing symlink implementation") | 
 |     @skip_if_ABSTFN_contains_backslash | 
 |     def test_realpath_resolve_first(self): | 
 |         # Bug #1213894: The first component of the path, if not absolute, | 
 |         # must be resolved too. | 
 |  | 
 |         try: | 
 |             old_path = abspath('.') | 
 |             os.mkdir(ABSTFN) | 
 |             os.mkdir(ABSTFN + "/k") | 
 |             os.symlink(ABSTFN, ABSTFN + "link") | 
 |             os.chdir(dirname(ABSTFN)) | 
 |  | 
 |             base = basename(ABSTFN) | 
 |             self.assertEqual(realpath(base + "link"), ABSTFN) | 
 |             self.assertEqual(realpath(base + "link/k"), ABSTFN + "/k") | 
 |         finally: | 
 |             os.chdir(old_path) | 
 |             support.unlink(ABSTFN + "link") | 
 |             safe_rmdir(ABSTFN + "/k") | 
 |             safe_rmdir(ABSTFN) | 
 |  | 
 |     def test_relpath(self): | 
 |         (real_getcwd, os.getcwd) = (os.getcwd, lambda: r"/home/user/bar") | 
 |         try: | 
 |             curdir = os.path.split(os.getcwd())[-1] | 
 |             self.assertRaises(ValueError, posixpath.relpath, "") | 
 |             self.assertEqual(posixpath.relpath("a"), "a") | 
 |             self.assertEqual(posixpath.relpath(posixpath.abspath("a")), "a") | 
 |             self.assertEqual(posixpath.relpath("a/b"), "a/b") | 
 |             self.assertEqual(posixpath.relpath("../a/b"), "../a/b") | 
 |             self.assertEqual(posixpath.relpath("a", "../b"), "../"+curdir+"/a") | 
 |             self.assertEqual(posixpath.relpath("a/b", "../c"), | 
 |                              "../"+curdir+"/a/b") | 
 |             self.assertEqual(posixpath.relpath("a", "b/c"), "../../a") | 
 |             self.assertEqual(posixpath.relpath("a", "a"), ".") | 
 |             self.assertEqual(posixpath.relpath("/foo/bar/bat", "/x/y/z"), '../../../foo/bar/bat') | 
 |             self.assertEqual(posixpath.relpath("/foo/bar/bat", "/foo/bar"), 'bat') | 
 |             self.assertEqual(posixpath.relpath("/foo/bar/bat", "/"), 'foo/bar/bat') | 
 |             self.assertEqual(posixpath.relpath("/", "/foo/bar/bat"), '../../..') | 
 |             self.assertEqual(posixpath.relpath("/foo/bar/bat", "/x"), '../foo/bar/bat') | 
 |             self.assertEqual(posixpath.relpath("/x", "/foo/bar/bat"), '../../../x') | 
 |             self.assertEqual(posixpath.relpath("/", "/"), '.') | 
 |             self.assertEqual(posixpath.relpath("/a", "/a"), '.') | 
 |             self.assertEqual(posixpath.relpath("/a/b", "/a/b"), '.') | 
 |         finally: | 
 |             os.getcwd = real_getcwd | 
 |  | 
 |     def test_relpath_bytes(self): | 
 |         (real_getcwdb, os.getcwdb) = (os.getcwdb, lambda: br"/home/user/bar") | 
 |         try: | 
 |             curdir = os.path.split(os.getcwdb())[-1] | 
 |             self.assertRaises(ValueError, posixpath.relpath, b"") | 
 |             self.assertEqual(posixpath.relpath(b"a"), b"a") | 
 |             self.assertEqual(posixpath.relpath(posixpath.abspath(b"a")), b"a") | 
 |             self.assertEqual(posixpath.relpath(b"a/b"), b"a/b") | 
 |             self.assertEqual(posixpath.relpath(b"../a/b"), b"../a/b") | 
 |             self.assertEqual(posixpath.relpath(b"a", b"../b"), | 
 |                              b"../"+curdir+b"/a") | 
 |             self.assertEqual(posixpath.relpath(b"a/b", b"../c"), | 
 |                              b"../"+curdir+b"/a/b") | 
 |             self.assertEqual(posixpath.relpath(b"a", b"b/c"), b"../../a") | 
 |             self.assertEqual(posixpath.relpath(b"a", b"a"), b".") | 
 |             self.assertEqual(posixpath.relpath(b"/foo/bar/bat", b"/x/y/z"), b'../../../foo/bar/bat') | 
 |             self.assertEqual(posixpath.relpath(b"/foo/bar/bat", b"/foo/bar"), b'bat') | 
 |             self.assertEqual(posixpath.relpath(b"/foo/bar/bat", b"/"), b'foo/bar/bat') | 
 |             self.assertEqual(posixpath.relpath(b"/", b"/foo/bar/bat"), b'../../..') | 
 |             self.assertEqual(posixpath.relpath(b"/foo/bar/bat", b"/x"), b'../foo/bar/bat') | 
 |             self.assertEqual(posixpath.relpath(b"/x", b"/foo/bar/bat"), b'../../../x') | 
 |             self.assertEqual(posixpath.relpath(b"/", b"/"), b'.') | 
 |             self.assertEqual(posixpath.relpath(b"/a", b"/a"), b'.') | 
 |             self.assertEqual(posixpath.relpath(b"/a/b", b"/a/b"), b'.') | 
 |  | 
 |             self.assertRaises(TypeError, posixpath.relpath, b"bytes", "str") | 
 |             self.assertRaises(TypeError, posixpath.relpath, "str", b"bytes") | 
 |         finally: | 
 |             os.getcwdb = real_getcwdb | 
 |  | 
 |  | 
 | class PosixCommonTest(test_genericpath.CommonTest, unittest.TestCase): | 
 |     pathmodule = posixpath | 
 |     attributes = ['relpath', 'samefile', 'sameopenfile', 'samestat'] | 
 |  | 
 |  | 
 | if __name__=="__main__": | 
 |     unittest.main() |