cpython/Lib/test/test_genericpath.py at main · python/cpython · GitHub

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"""

Tests common to genericpath, ntpath and posixpath

"""

import copy

import genericpath

import os

import pickle

import sys

import unittest

import warnings

from test import support

from test.support import os_helper

from test.support import warnings_helper

from test.support.script_helper import assert_python_ok

from test.support.os_helper import FakePath

def create_file(filename, data=b'foo'):

with open(filename, 'xb', 0) as fp:

fp.write(data)

class GenericTest:

common_attributes = ['commonprefix', 'getsize', 'getatime', 'getctime',

'getmtime', 'exists', 'isdir', 'isfile']

attributes = []

def test_no_argument(self):

for attr in self.common_attributes + self.attributes:

with self.assertRaises(TypeError):

getattr(self.pathmodule, attr)()

raise self.fail("{}.{}() did not raise a TypeError"

.format(self.pathmodule.__name__, attr))

def test_commonprefix(self):

with warnings_helper.check_warnings((".*commonpath().*", DeprecationWarning)):

self.do_test_commonprefix()

def do_test_commonprefix(self):

commonprefix = self.pathmodule.commonprefix

self.assertEqual(

commonprefix([]),

)

self.assertEqual(

commonprefix(["/home/swenson/spam", "/home/swen/spam"]),

"/home/swen"

)

self.assertEqual(

commonprefix(["/home/swen/spam", "/home/swen/eggs"]),

"/home/swen/"

)

self.assertEqual(

commonprefix(["/home/swen/spam", "/home/swen/spam"]),

"/home/swen/spam"

)

self.assertEqual(

commonprefix(["home:swenson:spam", "home:swen:spam"]),

"home:swen"

)

self.assertEqual(

commonprefix([":home:swen:spam", ":home:swen:eggs"]),

":home:swen:"

)

self.assertEqual(

commonprefix([":home:swen:spam", ":home:swen:spam"]),

":home:swen:spam"

)

self.assertEqual(

commonprefix([b"/home/swenson/spam", b"/home/swen/spam"]),

b"/home/swen"

)

self.assertEqual(

commonprefix([b"/home/swen/spam", b"/home/swen/eggs"]),

b"/home/swen/"

)

self.assertEqual(

commonprefix([b"/home/swen/spam", b"/home/swen/spam"]),

b"/home/swen/spam"

)

self.assertEqual(

commonprefix([b"home:swenson:spam", b"home:swen:spam"]),

b"home:swen"

)

self.assertEqual(

commonprefix([b":home:swen:spam", b":home:swen:eggs"]),

b":home:swen:"

)

self.assertEqual(

commonprefix([b":home:swen:spam", b":home:swen:spam"]),

b":home:swen:spam"

)

testlist = ['', 'abc', 'Xbcd', 'Xb', 'XY', 'abcd',

'aXc', 'abd', 'ab', 'aX', 'abcX']

for s1 in testlist:

for s2 in testlist:

p = commonprefix([s1, s2])

self.assertStartsWith(s1, p)

self.assertStartsWith(s2, p)

if s1 != s2:

n = len(p)

self.assertNotEqual(s1[n:n+1], s2[n:n+1])

def test_getsize(self):

filename = os_helper.TESTFN

self.addCleanup(os_helper.unlink, filename)

create_file(filename, b'Hello')

self.assertEqual(self.pathmodule.getsize(filename), 5)

os.remove(filename)

create_file(filename, b'Hello World!')

self.assertEqual(self.pathmodule.getsize(filename), 12)

def test_filetime(self):

filename = os_helper.TESTFN

self.addCleanup(os_helper.unlink, filename)

create_file(filename, b'foo')

with open(filename, "ab", 0) as f:

f.write(b"bar")

with open(filename, "rb", 0) as f:

data = f.read()

self.assertEqual(data, b"foobar")

self.assertLessEqual(

self.pathmodule.getctime(filename),

self.pathmodule.getmtime(filename)

)

def test_exists(self):

filename = os_helper.TESTFN

bfilename = os.fsencode(filename)

self.addCleanup(os_helper.unlink, filename)

self.assertIs(self.pathmodule.exists(filename), False)

self.assertIs(self.pathmodule.exists(bfilename), False)

self.assertIs(self.pathmodule.lexists(filename), False)

self.assertIs(self.pathmodule.lexists(bfilename), False)

create_file(filename)

self.assertIs(self.pathmodule.exists(filename), True)

self.assertIs(self.pathmodule.exists(bfilename), True)

self.assertIs(self.pathmodule.exists(filename + '\udfff'), False)

self.assertIs(self.pathmodule.exists(bfilename + b'\xff'), False)

self.assertIs(self.pathmodule.exists(filename + '\x00'), False)

self.assertIs(self.pathmodule.exists(bfilename + b'\x00'), False)

self.assertIs(self.pathmodule.lexists(filename), True)

self.assertIs(self.pathmodule.lexists(bfilename), True)

self.assertIs(self.pathmodule.lexists(filename + '\udfff'), False)

self.assertIs(self.pathmodule.lexists(bfilename + b'\xff'), False)

self.assertIs(self.pathmodule.lexists(filename + '\x00'), False)

self.assertIs(self.pathmodule.lexists(bfilename + b'\x00'), False)

# Keyword arguments are accepted

self.assertIs(self.pathmodule.exists(path=filename), True)

self.assertIs(self.pathmodule.lexists(path=filename), True)

@unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")

def test_exists_fd(self):

r, w = os.pipe()

try:

self.assertTrue(self.pathmodule.exists(r))

finally:

os.close(r)

os.close(w)

self.assertFalse(self.pathmodule.exists(r))

def test_exists_bool(self):

for fd in False, True:

with self.assertWarnsRegex(RuntimeWarning,

'bool is used as a file descriptor'):

self.pathmodule.exists(fd)

def test_isdir(self):

filename = os_helper.TESTFN

bfilename = os.fsencode(filename)

self.assertIs(self.pathmodule.isdir(filename), False)

self.assertIs(self.pathmodule.isdir(bfilename), False)

self.assertIs(self.pathmodule.isdir(filename + '\udfff'), False)

self.assertIs(self.pathmodule.isdir(bfilename + b'\xff'), False)

self.assertIs(self.pathmodule.isdir(filename + '\x00'), False)

self.assertIs(self.pathmodule.isdir(bfilename + b'\x00'), False)

try:

create_file(filename)

self.assertIs(self.pathmodule.isdir(filename), False)

self.assertIs(self.pathmodule.isdir(bfilename), False)

finally:

os_helper.unlink(filename)

try:

os.mkdir(filename)

self.assertIs(self.pathmodule.isdir(filename), True)

self.assertIs(self.pathmodule.isdir(bfilename), True)

finally:

os_helper.rmdir(filename)

def test_isfile(self):

filename = os_helper.TESTFN

bfilename = os.fsencode(filename)

self.assertIs(self.pathmodule.isfile(filename), False)

self.assertIs(self.pathmodule.isfile(bfilename), False)

self.assertIs(self.pathmodule.isfile(filename + '\udfff'), False)

self.assertIs(self.pathmodule.isfile(bfilename + b'\xff'), False)

self.assertIs(self.pathmodule.isfile(filename + '\x00'), False)

self.assertIs(self.pathmodule.isfile(bfilename + b'\x00'), False)

try:

create_file(filename)

self.assertIs(self.pathmodule.isfile(filename), True)

self.assertIs(self.pathmodule.isfile(bfilename), True)

finally:

os_helper.unlink(filename)

try:

os.mkdir(filename)

self.assertIs(self.pathmodule.isfile(filename), False)

self.assertIs(self.pathmodule.isfile(bfilename), False)

finally:

os_helper.rmdir(filename)

def test_samefile(self):

file1 = os_helper.TESTFN

file2 = os_helper.TESTFN + "2"

self.addCleanup(os_helper.unlink, file1)

self.addCleanup(os_helper.unlink, file2)

create_file(file1)

self.assertTrue(self.pathmodule.samefile(file1, file1))

create_file(file2)

self.assertFalse(self.pathmodule.samefile(file1, file2))

self.assertRaises(TypeError, self.pathmodule.samefile)

def _test_samefile_on_link_func(self, func):

test_fn1 = os_helper.TESTFN

test_fn2 = os_helper.TESTFN + "2"

self.addCleanup(os_helper.unlink, test_fn1)

self.addCleanup(os_helper.unlink, test_fn2)

create_file(test_fn1)

func(test_fn1, test_fn2)

self.assertTrue(self.pathmodule.samefile(test_fn1, test_fn2))

os.remove(test_fn2)

create_file(test_fn2)

self.assertFalse(self.pathmodule.samefile(test_fn1, test_fn2))

@os_helper.skip_unless_symlink

def test_samefile_on_symlink(self):

self._test_samefile_on_link_func(os.symlink)

@unittest.skipUnless(hasattr(os, 'link'), 'requires os.link')

def test_samefile_on_link(self):

try:

self._test_samefile_on_link_func(os.link)

except PermissionError as e:

self.skipTest('os.link(): %s' % e)

def test_samestat(self):

test_fn1 = os_helper.TESTFN

test_fn2 = os_helper.TESTFN + "2"

self.addCleanup(os_helper.unlink, test_fn1)

self.addCleanup(os_helper.unlink, test_fn2)

create_file(test_fn1)

stat1 = os.stat(test_fn1)

self.assertTrue(self.pathmodule.samestat(stat1, os.stat(test_fn1)))

create_file(test_fn2)

stat2 = os.stat(test_fn2)

self.assertFalse(self.pathmodule.samestat(stat1, stat2))

self.assertRaises(TypeError, self.pathmodule.samestat)

def _test_samestat_on_link_func(self, func):

test_fn1 = os_helper.TESTFN + "1"

test_fn2 = os_helper.TESTFN + "2"

self.addCleanup(os_helper.unlink, test_fn1)

self.addCleanup(os_helper.unlink, test_fn2)

create_file(test_fn1)

func(test_fn1, test_fn2)

self.assertTrue(self.pathmodule.samestat(os.stat(test_fn1),

os.stat(test_fn2)))

os.remove(test_fn2)

create_file(test_fn2)

self.assertFalse(self.pathmodule.samestat(os.stat(test_fn1),

os.stat(test_fn2)))

@os_helper.skip_unless_symlink

def test_samestat_on_symlink(self):

self._test_samestat_on_link_func(os.symlink)

@unittest.skipUnless(hasattr(os, 'link'), 'requires os.link')

def test_samestat_on_link(self):

try:

self._test_samestat_on_link_func(os.link)

except PermissionError as e:

self.skipTest('os.link(): %s' % e)

def test_sameopenfile(self):

filename = os_helper.TESTFN

self.addCleanup(os_helper.unlink, filename)

create_file(filename)

with open(filename, "rb", 0) as fp1:

fd1 = fp1.fileno()

with open(filename, "rb", 0) as fp2:

fd2 = fp2.fileno()

self.assertTrue(self.pathmodule.sameopenfile(fd1, fd2))

def test_realpath_mode_values(self):

for name in 'ALL_BUT_LAST', 'ALLOW_MISSING':

with self.subTest(name):

mode = getattr(self.pathmodule, name)

self.assertEqual(repr(mode), 'os.path.' + name)

self.assertEqual(str(mode), 'os.path.' + name)

self.assertTrue(mode)

self.assertIs(copy.copy(mode), mode)

self.assertIs(copy.deepcopy(mode), mode)

for proto in range(pickle.HIGHEST_PROTOCOL+1):

with self.subTest(protocol=proto):

pickled = pickle.dumps(mode, proto)

unpickled = pickle.loads(pickled)

self.assertIs(unpickled, mode)

class TestGenericTest(GenericTest, unittest.TestCase):

# Issue 16852: GenericTest can't inherit from unittest.TestCase

# for test discovery purposes; CommonTest inherits from GenericTest

# and is only meant to be inherited by others.

pathmodule = genericpath

def test_invalid_paths(self):

for attr in GenericTest.common_attributes:

# os.path.commonprefix doesn't raise ValueError

if attr == 'commonprefix':

continue

func = getattr(self.pathmodule, attr)

with self.subTest(attr=attr):

if attr in ('exists', 'isdir', 'isfile'):

func('/tmp\udfffabcds')

func(b'/tmp\xffabcds')

func('/tmp\x00abcds')

func(b'/tmp\x00abcds')

else:

with self.assertRaises((OSError, UnicodeEncodeError)):

func('/tmp\udfffabcds')

with self.assertRaises((OSError, UnicodeDecodeError)):

func(b'/tmp\xffabcds')

with self.assertRaisesRegex(ValueError, 'embedded null'):

func('/tmp\x00abcds')

with self.assertRaisesRegex(ValueError, 'embedded null'):

func(b'/tmp\x00abcds')

# Following TestCase is not supposed to be run from test_genericpath.

# It is inherited by other test modules (ntpath, posixpath).

class CommonTest(GenericTest):

common_attributes = GenericTest.common_attributes + [

# Properties

'curdir', 'pardir', 'extsep', 'sep',

'pathsep', 'defpath', 'altsep', 'devnull',

# Methods

'normcase', 'splitdrive', 'expandvars', 'normpath', 'abspath',

'join', 'split', 'splitext', 'isabs', 'basename', 'dirname',

'lexists', 'islink', 'ismount', 'expanduser', 'normpath', 'realpath',

]

def test_normcase(self):

normcase = self.pathmodule.normcase

# check that normcase() is idempotent

for p in ["FoO/./BaR", b"FoO/./BaR"]:

p = normcase(p)

self.assertEqual(p, normcase(p))

self.assertEqual(normcase(''), '')

self.assertEqual(normcase(b''), b'')

# check that normcase raises a TypeError for invalid types

for path in (None, True, 0, 2.5, [], bytearray(b''), {'o','o'}):

self.assertRaises(TypeError, normcase, path)

def test_splitdrive(self):

# splitdrive for non-NT paths

splitdrive = self.pathmodule.splitdrive

self.assertEqual(splitdrive("/foo/bar"), ("", "/foo/bar"))

self.assertEqual(splitdrive("foo:bar"), ("", "foo:bar"))

self.assertEqual(splitdrive(":foo:bar"), ("", ":foo:bar"))

self.assertEqual(splitdrive(b"/foo/bar"), (b"", b"/foo/bar"))

self.assertEqual(splitdrive(b"foo:bar"), (b"", b"foo:bar"))

self.assertEqual(splitdrive(b":foo:bar"), (b"", b":foo:bar"))

def test_expandvars(self):

expandvars = self.pathmodule.expandvars

with os_helper.EnvironmentVarGuard() as env:

env.clear()

env["foo"] = "bar"

env["{foo"] = "baz1"

env["{foo}"] = "baz2"

self.assertEqual(expandvars("foo"), "foo")

self.assertEqual(expandvars("$foo bar"), "bar bar")

self.assertEqual(expandvars("${foo}bar"), "barbar")

self.assertEqual(expandvars("$[foo]bar"), "$[foo]bar")

self.assertEqual(expandvars("$bar bar"), "$bar bar")

self.assertEqual(expandvars("$?bar"), "$?bar")

self.assertEqual(expandvars("$foo}bar"), "bar}bar")

self.assertEqual(expandvars("${foo"), "${foo")

self.assertEqual(expandvars("${{foo}}"), "baz1}")

self.assertEqual(expandvars("$foo$foo"), "barbar")

self.assertEqual(expandvars("$bar$bar"), "$bar$bar")

self.assertEqual(expandvars(b"foo"), b"foo")

self.assertEqual(expandvars(b"$foo bar"), b"bar bar")

self.assertEqual(expandvars(b"${foo}bar"), b"barbar")

self.assertEqual(expandvars(b"$[foo]bar"), b"$[foo]bar")

self.assertEqual(expandvars(b"$bar bar"), b"$bar bar")

self.assertEqual(expandvars(b"$?bar"), b"$?bar")

self.assertEqual(expandvars(b"$foo}bar"), b"bar}bar")

self.assertEqual(expandvars(b"${foo"), b"${foo")

self.assertEqual(expandvars(b"${{foo}}"), b"baz1}")

self.assertEqual(expandvars(b"$foo$foo"), b"barbar")

self.assertEqual(expandvars(b"$bar$bar"), b"$bar$bar")

@unittest.skipUnless(os_helper.FS_NONASCII, 'need os_helper.FS_NONASCII')

def test_expandvars_nonascii(self):

expandvars = self.pathmodule.expandvars

def check(value, expected):

self.assertEqual(expandvars(value), expected)

with os_helper.EnvironmentVarGuard() as env:

env.clear()

nonascii = os_helper.FS_NONASCII

env['spam'] = nonascii

env[nonascii] = 'ham' + nonascii

check(nonascii, nonascii)

check('$spam bar', '%s bar' % nonascii)

check('${spam}bar', '%sbar' % nonascii)

check('${%s}bar' % nonascii, 'ham%sbar' % nonascii)

check('$bar%s bar' % nonascii, '$bar%s bar' % nonascii)

check('$spam}bar', '%s}bar' % nonascii)

check(os.fsencode(nonascii), os.fsencode(nonascii))

check(b'$spam bar', os.fsencode('%s bar' % nonascii))

check(b'${spam}bar', os.fsencode('%sbar' % nonascii))

check(os.fsencode('${%s}bar' % nonascii),

os.fsencode('ham%sbar' % nonascii))

check(os.fsencode('$bar%s bar' % nonascii),

os.fsencode('$bar%s bar' % nonascii))

check(b'$spam}bar', os.fsencode('%s}bar' % nonascii))

@support.requires_resource('cpu')

def test_expandvars_large(self):

expandvars = self.pathmodule.expandvars

with os_helper.EnvironmentVarGuard() as env:

env.clear()

env["A"] = "B"

n = 100_000

self.assertEqual(expandvars('$A'*n), 'B'*n)

self.assertEqual(expandvars('${A}'*n), 'B'*n)

self.assertEqual(expandvars('$A!'*n), 'B!'*n)

self.assertEqual(expandvars('${A}A'*n), 'BA'*n)

self.assertEqual(expandvars('${'*10*n), '${'*10*n)

def test_abspath(self):

self.assertIn("foo", self.pathmodule.abspath("foo"))

with warnings.catch_warnings():

warnings.simplefilter("ignore", DeprecationWarning)

self.assertIn(b"foo", self.pathmodule.abspath(b"foo"))

# avoid UnicodeDecodeError on Windows

undecodable_path = b'' if sys.platform == 'win32' else b'f\xf2\xf2'

# Abspath returns bytes when the arg is bytes

with warnings.catch_warnings():

warnings.simplefilter("ignore", DeprecationWarning)

for path in (b'', b'foo', undecodable_path, b'/foo', b'C:\\'):

self.assertIsInstance(self.pathmodule.abspath(path), bytes)

def test_realpath(self):

self.assertIn("foo", self.pathmodule.realpath("foo"))

with warnings.catch_warnings():

warnings.simplefilter("ignore", DeprecationWarning)

self.assertIn(b"foo", self.pathmodule.realpath(b"foo"))

def test_normpath_issue5827(self):

# Make sure normpath preserves unicode

for path in ('', '.', '/', '\\', '///foo/.//bar//'):

self.assertIsInstance(self.pathmodule.normpath(path), str)

def test_normpath_issue106242(self):

for path in ('\x00', 'foo\x00bar', '\x00\x00', '\x00foo', 'foo\x00'):

self.assertEqual(self.pathmodule.normpath(path), path)

def test_abspath_issue3426(self):

# Check that abspath returns unicode when the arg is unicode

# with both ASCII and non-ASCII cwds.

abspath = self.pathmodule.abspath

for path in ('', 'fuu', 'f\xf9\xf9', '/fuu', 'U:\\'):

self.assertIsInstance(abspath(path), str)

unicwd = '\xe7w\xf0'

try:

os.fsencode(unicwd)

except (AttributeError, UnicodeEncodeError):

# FS encoding is probably ASCII

pass

else:

with os_helper.temp_cwd(unicwd):

for path in ('', 'fuu', 'f\xf9\xf9', '/fuu', 'U:\\'):

self.assertIsInstance(abspath(path), str)

def test_nonascii_abspath(self):

if (

os_helper.TESTFN_UNDECODABLE

# Apple platforms and Emscripten/WASI deny the creation of a

# directory with an invalid UTF-8 name. Windows allows creating a

# directory with an arbitrary bytes name, but fails to enter this

# directory (when the bytes name is used).

and sys.platform not in {

"win32", "emscripten", "wasi"

} and not support.is_apple

name = os_helper.TESTFN_UNDECODABLE

elif os_helper.TESTFN_NONASCII:

name = os_helper.TESTFN_NONASCII

else:

self.skipTest("need os_helper.TESTFN_NONASCII")

with warnings.catch_warnings():

warnings.simplefilter("ignore", DeprecationWarning)

with os_helper.temp_cwd(name):

self.test_abspath()

def test_join_errors(self):

# Check join() raises friendly TypeErrors.

with warnings_helper.check_warnings(('', BytesWarning), quiet=True):

errmsg = "Can't mix strings and bytes in path components"

with self.assertRaisesRegex(TypeError, errmsg):

self.pathmodule.join(b'bytes', 'str')

with self.assertRaisesRegex(TypeError, errmsg):

self.pathmodule.join('str', b'bytes')

# regression, see #15377

with self.assertRaisesRegex(TypeError, 'int'):

self.pathmodule.join(42, 'str')

with self.assertRaisesRegex(TypeError, 'int'):

self.pathmodule.join('str', 42)

with self.assertRaisesRegex(TypeError, 'int'):

self.pathmodule.join(42)

with self.assertRaisesRegex(TypeError, 'list'):

self.pathmodule.join([])

with self.assertRaisesRegex(TypeError, 'bytearray'):

self.pathmodule.join(bytearray(b'foo'), bytearray(b'bar'))

def test_relpath_errors(self):

# Check relpath() raises friendly TypeErrors.

with warnings_helper.check_warnings(

('', (BytesWarning, DeprecationWarning)), quiet=True):

errmsg = "Can't mix strings and bytes in path components"

with self.assertRaisesRegex(TypeError, errmsg):

self.pathmodule.relpath(b'bytes', 'str')

with self.assertRaisesRegex(TypeError, errmsg):

self.pathmodule.relpath('str', b'bytes')

with self.assertRaisesRegex(TypeError, 'int'):

self.pathmodule.relpath(42, 'str')

with self.assertRaisesRegex(TypeError, 'int'):

self.pathmodule.relpath('str', 42)

with self.assertRaisesRegex(TypeError, 'bytearray'):

self.pathmodule.relpath(bytearray(b'foo'), bytearray(b'bar'))

def test_import(self):

assert_python_ok('-S', '-c', 'import ' + self.pathmodule.__name__)

class PathLikeTests(unittest.TestCase):

def setUp(self):

self.file_name = os_helper.TESTFN

self.file_path = FakePath(os_helper.TESTFN)

self.addCleanup(os_helper.unlink, self.file_name)

create_file(self.file_name, b"test_genericpath.PathLikeTests")

def assertPathEqual(self, func):

self.assertEqual(func(self.file_path), func(self.file_name))

def test_path_exists(self):

self.assertPathEqual(os.path.exists)

def test_path_isfile(self):

self.assertPathEqual(os.path.isfile)

def test_path_isdir(self):

self.assertPathEqual(os.path.isdir)

def test_path_commonprefix(self):

with warnings_helper.check_warnings((".*commonpath().*", DeprecationWarning)):

self.assertEqual(os.path.commonprefix([self.file_path, self.file_name]),

self.file_name)

def test_path_getsize(self):

self.assertPathEqual(os.path.getsize)

def test_path_getmtime(self):

self.assertPathEqual(os.path.getatime)

def test_path_getctime(self):

self.assertPathEqual(os.path.getctime)

def test_path_samefile(self):

self.assertTrue(os.path.samefile(self.file_path, self.file_name))

if __name__ == "__main__":

unittest.main()

cpython/Lib/test/test_genericpath.py at main · python/cpython · GitHub

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