cosmopolitan/third_party/python/Lib/test/test_stat.py
Gautham 49db877fbe
Minimize Python startup imports (#292)
* get_exports_list should return list
* remove unintentional `CC=clang` in makefile
* avoid importing sysconfig during startup

site.py requires only a couple of functions from sysconfig, but needs to
load the entirety of sysconfig to get those functions. This commit
makes it such that sysconfig is imported only when sys.platform is darwin.

* remove redundant constants from stat module

The constants are only there in case the C implementation (ie the _stat
module) is not available. With Cosmopolitan the _stat module is always
available. The entire Lib/stat.py file can be removed if the Windows-based
constants can be moved into the Modules/_stat.c.

* minimal changes to os.py

python checks os-based assumptions at startup, some of  which can be
bypassed since this is Cosmopolitan Python.
2021-10-25 14:04:04 -07:00

234 lines
8 KiB
Python

import unittest
import os
import sys
from test.support import TESTFN, import_fresh_module
c_stat = import_fresh_module('stat', fresh=['_stat'])
assert c_stat
class TestFilemode:
statmod = None
file_flags = {'SF_APPEND', 'SF_ARCHIVED', 'SF_IMMUTABLE', 'SF_NOUNLINK',
'SF_SNAPSHOT', 'UF_APPEND', 'UF_COMPRESSED', 'UF_HIDDEN',
'UF_IMMUTABLE', 'UF_NODUMP', 'UF_NOUNLINK', 'UF_OPAQUE'}
formats = {'S_IFBLK', 'S_IFCHR', 'S_IFDIR', 'S_IFIFO', 'S_IFLNK',
'S_IFREG', 'S_IFSOCK'}
format_funcs = {'S_ISBLK', 'S_ISCHR', 'S_ISDIR', 'S_ISFIFO', 'S_ISLNK',
'S_ISREG', 'S_ISSOCK'}
stat_struct = {
'ST_MODE': 0,
'ST_INO': 1,
'ST_DEV': 2,
'ST_NLINK': 3,
'ST_UID': 4,
'ST_GID': 5,
'ST_SIZE': 6,
'ST_ATIME': 7,
'ST_MTIME': 8,
'ST_CTIME': 9}
# permission bit value are defined by POSIX
permission_bits = {
'S_ISUID': 0o4000,
'S_ISGID': 0o2000,
'S_ENFMT': 0o2000,
'S_ISVTX': 0o1000,
'S_IRWXU': 0o700,
'S_IRUSR': 0o400,
'S_IREAD': 0o400,
'S_IWUSR': 0o200,
'S_IWRITE': 0o200,
'S_IXUSR': 0o100,
'S_IEXEC': 0o100,
'S_IRWXG': 0o070,
'S_IRGRP': 0o040,
'S_IWGRP': 0o020,
'S_IXGRP': 0o010,
'S_IRWXO': 0o007,
'S_IROTH': 0o004,
'S_IWOTH': 0o002,
'S_IXOTH': 0o001}
# defined by the Windows API documentation
file_attributes = {
'FILE_ATTRIBUTE_ARCHIVE': 32,
'FILE_ATTRIBUTE_COMPRESSED': 2048,
'FILE_ATTRIBUTE_DEVICE': 64,
'FILE_ATTRIBUTE_DIRECTORY': 16,
'FILE_ATTRIBUTE_ENCRYPTED': 16384,
'FILE_ATTRIBUTE_HIDDEN': 2,
'FILE_ATTRIBUTE_INTEGRITY_STREAM': 32768,
'FILE_ATTRIBUTE_NORMAL': 128,
'FILE_ATTRIBUTE_NOT_CONTENT_INDEXED': 8192,
'FILE_ATTRIBUTE_NO_SCRUB_DATA': 131072,
'FILE_ATTRIBUTE_OFFLINE': 4096,
'FILE_ATTRIBUTE_READONLY': 1,
'FILE_ATTRIBUTE_REPARSE_POINT': 1024,
'FILE_ATTRIBUTE_SPARSE_FILE': 512,
'FILE_ATTRIBUTE_SYSTEM': 4,
'FILE_ATTRIBUTE_TEMPORARY': 256,
'FILE_ATTRIBUTE_VIRTUAL': 65536}
def setUp(self):
try:
os.remove(TESTFN)
except OSError:
try:
os.rmdir(TESTFN)
except OSError:
pass
tearDown = setUp
def get_mode(self, fname=TESTFN, lstat=True):
if lstat:
st_mode = os.lstat(fname).st_mode
else:
st_mode = os.stat(fname).st_mode
modestr = self.statmod.filemode(st_mode)
return st_mode, modestr
def assertS_IS(self, name, mode):
# test format, lstrip is for S_IFIFO
fmt = getattr(self.statmod, "S_IF" + name.lstrip("F"))
self.assertEqual(self.statmod.S_IFMT(mode), fmt)
# test that just one function returns true
testname = "S_IS" + name
for funcname in self.format_funcs:
func = getattr(self.statmod, funcname, None)
if func is None:
if funcname == testname:
raise ValueError(funcname)
continue
if funcname == testname:
self.assertTrue(func(mode))
else:
self.assertFalse(func(mode))
def test_mode(self):
with open(TESTFN, 'w'):
pass
if os.name == 'posix':
os.chmod(TESTFN, 0o700)
st_mode, modestr = self.get_mode()
self.assertEqual(modestr, '-rwx------')
self.assertS_IS("REG", st_mode)
self.assertEqual(self.statmod.S_IMODE(st_mode),
self.statmod.S_IRWXU)
os.chmod(TESTFN, 0o070)
st_mode, modestr = self.get_mode()
self.assertEqual(modestr, '----rwx---')
self.assertS_IS("REG", st_mode)
self.assertEqual(self.statmod.S_IMODE(st_mode),
self.statmod.S_IRWXG)
os.chmod(TESTFN, 0o007)
st_mode, modestr = self.get_mode()
self.assertEqual(modestr, '-------rwx')
self.assertS_IS("REG", st_mode)
self.assertEqual(self.statmod.S_IMODE(st_mode),
self.statmod.S_IRWXO)
os.chmod(TESTFN, 0o444)
st_mode, modestr = self.get_mode()
self.assertS_IS("REG", st_mode)
self.assertEqual(modestr, '-r--r--r--')
self.assertEqual(self.statmod.S_IMODE(st_mode), 0o444)
else:
os.chmod(TESTFN, 0o700)
st_mode, modestr = self.get_mode()
self.assertEqual(modestr[:3], '-rw')
self.assertS_IS("REG", st_mode)
self.assertEqual(self.statmod.S_IFMT(st_mode),
self.statmod.S_IFREG)
def test_directory(self):
os.mkdir(TESTFN)
os.chmod(TESTFN, 0o700)
st_mode, modestr = self.get_mode()
self.assertS_IS("DIR", st_mode)
if os.name == 'posix':
self.assertEqual(modestr, 'drwx------')
else:
self.assertEqual(modestr[0], 'd')
@unittest.skipUnless(hasattr(os, 'symlink'), 'os.symlink not available')
def test_link(self):
try:
os.symlink(os.getcwd(), TESTFN)
except (OSError, NotImplementedError) as err:
raise unittest.SkipTest(str(err))
else:
st_mode, modestr = self.get_mode()
self.assertEqual(modestr[0], 'l')
self.assertS_IS("LNK", st_mode)
@unittest.skipUnless(hasattr(os, 'mkfifo'), 'os.mkfifo not available')
def test_fifo(self):
try:
os.mkfifo(TESTFN, 0o700)
except PermissionError as e:
self.skipTest('os.mkfifo(): %s' % e)
st_mode, modestr = self.get_mode()
self.assertEqual(modestr, 'prwx------')
self.assertS_IS("FIFO", st_mode)
@unittest.skipUnless(os.name == 'posix', 'requires Posix')
def test_devices(self):
if os.path.exists(os.devnull):
st_mode, modestr = self.get_mode(os.devnull, lstat=False)
self.assertEqual(modestr[0], 'c')
self.assertS_IS("CHR", st_mode)
# Linux block devices, BSD has no block devices anymore
for blockdev in ("/dev/sda", "/dev/hda"):
if os.path.exists(blockdev):
st_mode, modestr = self.get_mode(blockdev, lstat=False)
self.assertEqual(modestr[0], 'b')
self.assertS_IS("BLK", st_mode)
break
def test_module_attributes(self):
for key, value in self.stat_struct.items():
modvalue = getattr(self.statmod, key)
self.assertEqual(value, modvalue, key)
for key, value in self.permission_bits.items():
modvalue = getattr(self.statmod, key)
self.assertEqual(value, modvalue, key)
for key in self.file_flags:
modvalue = getattr(self.statmod, key)
self.assertIsInstance(modvalue, int)
for key in self.formats:
modvalue = getattr(self.statmod, key)
self.assertIsInstance(modvalue, int)
for key in self.format_funcs:
func = getattr(self.statmod, key)
self.assertTrue(callable(func))
self.assertEqual(func(0), 0)
@unittest.skipUnless(sys.platform == "win32",
"FILE_ATTRIBUTE_* constants are Win32 specific")
def test_file_attribute_constants(self):
for key, value in sorted(self.file_attributes.items()):
self.assertTrue(hasattr(self.statmod, key), key)
modvalue = getattr(self.statmod, key)
self.assertEqual(value, modvalue, key)
class TestFilemodeCStat(TestFilemode, unittest.TestCase):
statmod = c_stat
formats = TestFilemode.formats | {'S_IFDOOR', 'S_IFPORT', 'S_IFWHT'}
format_funcs = TestFilemode.format_funcs | {'S_ISDOOR', 'S_ISPORT',
'S_ISWHT'}
if __name__ == '__main__':
unittest.main()
if __name__ == 'PYOBJ.COM':
import stat
import _stat