cpython/Lib/test/test_genericpath.py

532 lines
20 KiB
Python

"""
Tests common to genericpath, macpath, ntpath and posixpath
"""
import genericpath
import os
import sys
import unittest
import warnings
from test import support
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):
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.assertTrue(s1.startswith(p))
self.assertTrue(s2.startswith(p))
if s1 != s2:
n = len(p)
self.assertNotEqual(s1[n:n+1], s2[n:n+1])
def test_getsize(self):
filename = support.TESTFN
self.addCleanup(support.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 = support.TESTFN
self.addCleanup(support.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 = support.TESTFN
self.addCleanup(support.unlink, filename)
self.assertIs(self.pathmodule.exists(filename), False)
with open(filename, "xb") as f:
f.write(b"foo")
self.assertIs(self.pathmodule.exists(filename), True)
if not self.pathmodule == genericpath:
self.assertIs(self.pathmodule.lexists(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_isdir_file(self):
filename = support.TESTFN
self.addCleanup(support.unlink, filename)
self.assertIs(self.pathmodule.isdir(filename), False)
create_file(filename)
self.assertIs(self.pathmodule.isdir(filename), False)
def test_isdir_dir(self):
filename = support.TESTFN
self.addCleanup(support.rmdir, filename)
self.assertIs(self.pathmodule.isdir(filename), False)
os.mkdir(filename)
self.assertIs(self.pathmodule.isdir(filename), True)
def test_isfile_file(self):
filename = support.TESTFN
self.addCleanup(support.unlink, filename)
self.assertIs(self.pathmodule.isfile(filename), False)
create_file(filename)
self.assertIs(self.pathmodule.isfile(filename), True)
def test_isfile_dir(self):
filename = support.TESTFN
self.addCleanup(support.rmdir, filename)
self.assertIs(self.pathmodule.isfile(filename), False)
os.mkdir(filename)
self.assertIs(self.pathmodule.isfile(filename), False)
def test_samefile(self):
file1 = support.TESTFN
file2 = support.TESTFN + "2"
self.addCleanup(support.unlink, file1)
self.addCleanup(support.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 = support.TESTFN
test_fn2 = support.TESTFN + "2"
self.addCleanup(support.unlink, test_fn1)
self.addCleanup(support.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))
@support.skip_unless_symlink
def test_samefile_on_symlink(self):
self._test_samefile_on_link_func(os.symlink)
def test_samefile_on_link(self):
self._test_samefile_on_link_func(os.link)
def test_samestat(self):
test_fn1 = support.TESTFN
test_fn2 = support.TESTFN + "2"
self.addCleanup(support.unlink, test_fn1)
self.addCleanup(support.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 = support.TESTFN + "1"
test_fn2 = support.TESTFN + "2"
self.addCleanup(support.unlink, test_fn1)
self.addCleanup(support.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)))
@support.skip_unless_symlink
def test_samestat_on_symlink(self):
self._test_samestat_on_link_func(os.symlink)
def test_samestat_on_link(self):
self._test_samestat_on_link_func(os.link)
def test_sameopenfile(self):
filename = support.TESTFN
self.addCleanup(support.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))
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_null_bytes(self):
for attr in GenericTest.common_attributes:
# os.path.commonprefix doesn't raise ValueError
if attr == 'commonprefix':
continue
with self.subTest(attr=attr):
with self.assertRaises(ValueError) as cm:
getattr(self.pathmodule, attr)('/tmp\x00abcds')
self.assertIn('embedded null', str(cm.exception))
# Following TestCase is not supposed to be run from test_genericpath.
# It is inherited by other test modules (macpath, 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):
if self.pathmodule.__name__ == 'macpath':
self.skipTest('macpath.expandvars is a stub')
expandvars = self.pathmodule.expandvars
with support.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(support.FS_NONASCII, 'need support.FS_NONASCII')
def test_expandvars_nonascii(self):
if self.pathmodule.__name__ == 'macpath':
self.skipTest('macpath.expandvars is a stub')
expandvars = self.pathmodule.expandvars
def check(value, expected):
self.assertEqual(expandvars(value), expected)
with support.EnvironmentVarGuard() as env:
env.clear()
nonascii = support.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))
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_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 support.temp_cwd(unicwd):
for path in ('', 'fuu', 'f\xf9\xf9', '/fuu', 'U:\\'):
self.assertIsInstance(abspath(path), str)
def test_nonascii_abspath(self):
if (support.TESTFN_UNDECODABLE
# Mac OS X denies 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', 'darwin')):
name = support.TESTFN_UNDECODABLE
elif support.TESTFN_NONASCII:
name = support.TESTFN_NONASCII
else:
self.skipTest("need support.TESTFN_NONASCII")
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
with support.temp_cwd(name):
self.test_abspath()
def test_join_errors(self):
# Check join() raises friendly TypeErrors.
with support.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 support.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'))
class PathLikeTests(unittest.TestCase):
class PathLike:
def __init__(self, path=''):
self.path = path
def __fspath__(self):
if isinstance(self.path, BaseException):
raise self.path
else:
return self.path
def setUp(self):
self.file_name = support.TESTFN.lower()
self.file_path = self.PathLike(support.TESTFN)
self.addCleanup(support.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):
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()