Add tests for untested features of the 'stat' module (part of issue #11016)
This commit is contained in:
Christian Heimes
commit
085e1c6e6c
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@ -1,14 +1,52 @@
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import unittest
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import os
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from test.support import TESTFN, run_unittest, import_fresh_module
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import stat
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from test.support import TESTFN, run_unittest
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def get_mode(fname=TESTFN):
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return stat.filemode(os.lstat(fname).st_mode)
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class TestFilemode(unittest.TestCase):
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file_flags = {'SF_APPEND', 'SF_ARCHIVED', 'SF_IMMUTABLE', 'SF_NOUNLINK',
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'SF_SNAPSHOT', 'UF_APPEND', 'UF_COMPRESSED', 'UF_HIDDEN',
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'UF_IMMUTABLE', 'UF_NODUMP', 'UF_NOUNLINK', 'UF_OPAQUE'}
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formats = {'S_IFBLK', 'S_IFCHR', 'S_IFDIR', 'S_IFIFO', 'S_IFLNK',
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'S_IFREG', 'S_IFSOCK'}
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format_funcs = {'S_ISBLK', 'S_ISCHR', 'S_ISDIR', 'S_ISFIFO', 'S_ISLNK',
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'S_ISREG', 'S_ISSOCK'}
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stat_struct = {
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'ST_MODE': 0,
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'ST_INO': 1,
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'ST_DEV': 2,
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'ST_NLINK': 3,
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'ST_UID': 4,
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'ST_GID': 5,
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'ST_SIZE': 6,
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'ST_ATIME': 7,
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'ST_MTIME': 8,
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'ST_CTIME': 9}
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# permission bit value are defined by POSIX
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permission_bits = {
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'S_ISUID': 0o4000,
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'S_ISGID': 0o2000,
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'S_ENFMT': 0o2000,
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'S_ISVTX': 0o1000,
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'S_IRWXU': 0o700,
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'S_IRUSR': 0o400,
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'S_IREAD': 0o400,
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'S_IWUSR': 0o200,
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'S_IWRITE': 0o200,
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'S_IXUSR': 0o100,
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'S_IEXEC': 0o100,
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'S_IRWXG': 0o070,
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'S_IRGRP': 0o040,
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'S_IWGRP': 0o020,
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'S_IXGRP': 0o010,
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'S_IRWXO': 0o007,
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'S_IROTH': 0o004,
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'S_IWOTH': 0o002,
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'S_IXOTH': 0o001}
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def setUp(self):
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try:
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@ -20,29 +58,75 @@ class TestFilemode(unittest.TestCase):
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pass
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tearDown = setUp
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def get_mode(self, fname=TESTFN):
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st_mode = os.lstat(fname).st_mode
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modestr = stat.filemode(st_mode)
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return st_mode, modestr
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def assertS_IS(self, name, mode):
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# test format, lstrip is for S_IFIFO
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fmt = getattr(stat, "S_IF" + name.lstrip("F"))
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self.assertEqual(stat.S_IFMT(mode), fmt)
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# test that just one function returns true
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testname = "S_IS" + name
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for funcname in self.format_funcs:
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func = getattr(stat, funcname, None)
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if func is None:
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if funcname == testname:
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raise ValueError(funcname)
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continue
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if funcname == testname:
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self.assertTrue(func(mode))
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else:
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self.assertFalse(func(mode))
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def test_mode(self):
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with open(TESTFN, 'w'):
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pass
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if os.name == 'posix':
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os.chmod(TESTFN, 0o700)
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self.assertEqual(get_mode(), '-rwx------')
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st_mode, modestr = self.get_mode()
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self.assertEqual(modestr, '-rwx------')
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self.assertS_IS("REG", st_mode)
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self.assertEqual(stat.S_IMODE(st_mode),
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stat.S_IRWXU)
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os.chmod(TESTFN, 0o070)
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self.assertEqual(get_mode(), '----rwx---')
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st_mode, modestr = self.get_mode()
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self.assertEqual(modestr, '----rwx---')
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self.assertS_IS("REG", st_mode)
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self.assertEqual(stat.S_IMODE(st_mode),
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stat.S_IRWXG)
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os.chmod(TESTFN, 0o007)
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self.assertEqual(get_mode(), '-------rwx')
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st_mode, modestr = self.get_mode()
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self.assertEqual(modestr, '-------rwx')
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self.assertS_IS("REG", st_mode)
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self.assertEqual(stat.S_IMODE(st_mode),
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stat.S_IRWXO)
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os.chmod(TESTFN, 0o444)
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self.assertEqual(get_mode(), '-r--r--r--')
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st_mode, modestr = self.get_mode()
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self.assertS_IS("REG", st_mode)
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self.assertEqual(modestr, '-r--r--r--')
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self.assertEqual(stat.S_IMODE(st_mode), 0o444)
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else:
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os.chmod(TESTFN, 0o700)
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self.assertEqual(get_mode()[:3], '-rw')
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st_mode, modestr = self.get_mode()
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self.assertEqual(modestr[:3], '-rw')
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self.assertS_IS("REG", st_mode)
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self.assertEqual(stat.S_IFMT(st_mode),
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stat.S_IFREG)
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def test_directory(self):
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os.mkdir(TESTFN)
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os.chmod(TESTFN, 0o700)
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st_mode, modestr = self.get_mode()
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self.assertS_IS("DIR", st_mode)
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if os.name == 'posix':
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self.assertEqual(get_mode(), 'drwx------')
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self.assertEqual(modestr, 'drwx------')
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else:
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self.assertEqual(get_mode()[0], 'd')
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self.assertEqual(modestr[0], 'd')
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@unittest.skipUnless(hasattr(os, 'symlink'), 'os.symlink not available')
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def test_link(self):
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@ -51,12 +135,47 @@ class TestFilemode(unittest.TestCase):
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except (OSError, NotImplementedError) as err:
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raise unittest.SkipTest(str(err))
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else:
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self.assertEqual(get_mode()[0], 'l')
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st_mode, modestr = self.get_mode()
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self.assertEqual(modestr[0], 'l')
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self.assertS_IS("LNK", st_mode)
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@unittest.skipUnless(hasattr(os, 'mkfifo'), 'os.mkfifo not available')
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def test_fifo(self):
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os.mkfifo(TESTFN, 0o700)
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self.assertEqual(get_mode(), 'prwx------')
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st_mode, modestr = self.get_mode()
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self.assertEqual(modestr, 'prwx------')
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self.assertS_IS("FIFO", st_mode)
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@unittest.skipUnless(os.name == 'posix', 'requires Posix')
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def test_devices(self):
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if os.path.exists(os.devnull):
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st_mode, modestr = self.get_mode(os.devnull)
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self.assertEqual(modestr[0], 'c')
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self.assertS_IS("CHR", st_mode)
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for blockdev in ("/dev/sda", "/dev/hda", "/dev/da0", "/dev/ad0"):
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if os.path.exists(blockdev):
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st_mode, modestr = self.get_mode(blockdev)
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self.assertEqual(modestr[0], 'b')
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self.assertS_IS("BLK", st_mode)
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break
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def test_module_attributes(self):
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for key, value in self.stat_struct.items():
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modvalue = getattr(stat, key)
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self.assertEqual(value, modvalue, key)
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for key, value in self.permission_bits.items():
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modvalue = getattr(stat, key)
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self.assertEqual(value, modvalue, key)
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for key in self.file_flags:
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modvalue = getattr(stat, key)
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self.assertIsInstance(modvalue, int)
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for key in self.formats:
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modvalue = getattr(stat, key)
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self.assertIsInstance(modvalue, int)
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for key in self.format_funcs:
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func = getattr(stat, key)
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self.assertTrue(callable(func))
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self.assertEqual(func(0), 0)
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def test_main():
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