1 import unittest 2 import os 3 from test.test_support import TESTFN, run_unittest 4 import stat 5 6 class TestFilemode(unittest.TestCase): 7 file_flags = {'SF_APPEND', 'SF_ARCHIVED', 'SF_IMMUTABLE', 'SF_NOUNLINK', 8 'SF_SNAPSHOT', 'UF_APPEND', 'UF_COMPRESSED', 'UF_HIDDEN', 9 'UF_IMMUTABLE', 'UF_NODUMP', 'UF_NOUNLINK', 'UF_OPAQUE'} 10 11 formats = {'S_IFBLK', 'S_IFCHR', 'S_IFDIR', 'S_IFIFO', 'S_IFLNK', 12 'S_IFREG', 'S_IFSOCK'} 13 14 format_funcs = {'S_ISBLK', 'S_ISCHR', 'S_ISDIR', 'S_ISFIFO', 'S_ISLNK', 15 'S_ISREG', 'S_ISSOCK'} 16 17 stat_struct = { 18 'ST_MODE': 0, 19 'ST_INO': 1, 20 'ST_DEV': 2, 21 'ST_NLINK': 3, 22 'ST_UID': 4, 23 'ST_GID': 5, 24 'ST_SIZE': 6, 25 'ST_ATIME': 7, 26 'ST_MTIME': 8, 27 'ST_CTIME': 9} 28 29 # permission bit value are defined by POSIX 30 permission_bits = { 31 'S_ISUID': 0o4000, 32 'S_ISGID': 0o2000, 33 'S_ENFMT': 0o2000, 34 'S_ISVTX': 0o1000, 35 'S_IRWXU': 0o700, 36 'S_IRUSR': 0o400, 37 'S_IREAD': 0o400, 38 'S_IWUSR': 0o200, 39 'S_IWRITE': 0o200, 40 'S_IXUSR': 0o100, 41 'S_IEXEC': 0o100, 42 'S_IRWXG': 0o070, 43 'S_IRGRP': 0o040, 44 'S_IWGRP': 0o020, 45 'S_IXGRP': 0o010, 46 'S_IRWXO': 0o007, 47 'S_IROTH': 0o004, 48 'S_IWOTH': 0o002, 49 'S_IXOTH': 0o001} 50 51 def setUp(self): 52 try: 53 os.remove(TESTFN) 54 except OSError: 55 try: 56 os.rmdir(TESTFN) 57 except OSError: 58 pass 59 tearDown = setUp 60 61 def get_mode(self, fname=TESTFN, lstat=True): 62 if lstat: 63 st_mode = os.lstat(fname).st_mode 64 else: 65 st_mode = os.stat(fname).st_mode 66 return st_mode 67 68 def assertS_IS(self, name, mode): 69 # test format, lstrip is for S_IFIFO 70 fmt = getattr(stat, "S_IF" + name.lstrip("F")) 71 self.assertEqual(stat.S_IFMT(mode), fmt) 72 # test that just one function returns true 73 testname = "S_IS" + name 74 for funcname in self.format_funcs: 75 func = getattr(stat, funcname, None) 76 if func is None: 77 if funcname == testname: 78 raise ValueError(funcname) 79 continue 80 if funcname == testname: 81 self.assertTrue(func(mode)) 82 else: 83 self.assertFalse(func(mode)) 84 85 def test_mode(self): 86 with open(TESTFN, 'w'): 87 pass 88 if os.name == 'posix': 89 os.chmod(TESTFN, 0o700) 90 st_mode = self.get_mode() 91 self.assertS_IS("REG", st_mode) 92 self.assertEqual(stat.S_IMODE(st_mode), 93 stat.S_IRWXU) 94 95 os.chmod(TESTFN, 0o070) 96 st_mode = self.get_mode() 97 self.assertS_IS("REG", st_mode) 98 self.assertEqual(stat.S_IMODE(st_mode), 99 stat.S_IRWXG) 100 101 os.chmod(TESTFN, 0o007) 102 st_mode = self.get_mode() 103 self.assertS_IS("REG", st_mode) 104 self.assertEqual(stat.S_IMODE(st_mode), 105 stat.S_IRWXO) 106 107 os.chmod(TESTFN, 0o444) 108 st_mode = self.get_mode() 109 self.assertS_IS("REG", st_mode) 110 self.assertEqual(stat.S_IMODE(st_mode), 0o444) 111 else: 112 os.chmod(TESTFN, 0o700) 113 st_mode = self.get_mode() 114 self.assertS_IS("REG", st_mode) 115 self.assertEqual(stat.S_IFMT(st_mode), 116 stat.S_IFREG) 117 118 def test_directory(self): 119 os.mkdir(TESTFN) 120 os.chmod(TESTFN, 0o700) 121 st_mode = self.get_mode() 122 self.assertS_IS("DIR", st_mode) 123 124 @unittest.skipUnless(hasattr(os, 'symlink'), 'os.symlink not available') 125 def test_link(self): 126 try: 127 os.symlink(os.getcwd(), TESTFN) 128 except (OSError, NotImplementedError) as err: 129 raise unittest.SkipTest(str(err)) 130 else: 131 st_mode = self.get_mode() 132 self.assertS_IS("LNK", st_mode) 133 134 @unittest.skipUnless(hasattr(os, 'mkfifo'), 'os.mkfifo not available') 135 def test_fifo(self): 136 os.mkfifo(TESTFN, 0o700) 137 st_mode = self.get_mode() 138 self.assertS_IS("FIFO", st_mode) 139 140 @unittest.skipUnless(os.name == 'posix', 'requires Posix') 141 def test_devices(self): 142 if os.path.exists(os.devnull): 143 st_mode = self.get_mode(os.devnull, lstat=False) 144 self.assertS_IS("CHR", st_mode) 145 # Linux block devices, BSD has no block devices anymore 146 for blockdev in ("/dev/sda", "/dev/hda"): 147 if os.path.exists(blockdev): 148 st_mode = self.get_mode(blockdev, lstat=False) 149 self.assertS_IS("BLK", st_mode) 150 break 151 152 def test_module_attributes(self): 153 for key, value in self.stat_struct.items(): 154 modvalue = getattr(stat, key) 155 self.assertEqual(value, modvalue, key) 156 for key, value in self.permission_bits.items(): 157 modvalue = getattr(stat, key) 158 self.assertEqual(value, modvalue, key) 159 for key in self.file_flags: 160 modvalue = getattr(stat, key) 161 self.assertIsInstance(modvalue, int) 162 for key in self.formats: 163 modvalue = getattr(stat, key) 164 self.assertIsInstance(modvalue, int) 165 for key in self.format_funcs: 166 func = getattr(stat, key) 167 self.assertTrue(callable(func)) 168 self.assertEqual(func(0), 0) 169 170 171 def test_main(): 172 run_unittest(TestFilemode) 173 174 if __name__ == '__main__': 175 test_main() 176
