Lib/test/test_uuid.py

   1 from unittest import TestCase
   2 from test import test_support
   3 import uuid
   4
   5 def importable(name):
   6     try:
   7         __import__(name)
   8         return True
   9     except:
  10         return False
  11
  12 class TestUUID(TestCase):
  13     last_node = None
  14     source2node = {}
  15
  16     def test_UUID(self):
  17         equal = self.assertEqual
  18         ascending = []
  19         for (string, curly, hex, bytes, bytes_le, fields, integer, urn,
  20              time, clock_seq, variant, version) in [
  21             ('00000000-0000-0000-0000-000000000000',
  22              '{00000000-0000-0000-0000-000000000000}',
  23              '00000000000000000000000000000000',
  24              '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
  25              '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
  26              (0, 0, 0, 0, 0, 0),
  27              0,
  28              'urn:uuid:00000000-0000-0000-0000-000000000000',
  29              0, 0, uuid.RESERVED_NCS, None),
  30             ('00010203-0405-0607-0809-0a0b0c0d0e0f',
  31              '{00010203-0405-0607-0809-0a0b0c0d0e0f}',
  32              '000102030405060708090a0b0c0d0e0f',
  33              '\0\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\x0d\x0e\x0f',
  34              '\x03\x02\x01\0\x05\x04\x07\x06\x08\t\n\x0b\x0c\x0d\x0e\x0f',
  35              (0x00010203L, 0x0405, 0x0607, 8, 9, 0x0a0b0c0d0e0fL),
  36              0x000102030405060708090a0b0c0d0e0fL,
  37              'urn:uuid:00010203-0405-0607-0809-0a0b0c0d0e0f',
  38              0x607040500010203L, 0x809, uuid.RESERVED_NCS, None),
  39             ('02d9e6d5-9467-382e-8f9b-9300a64ac3cd',
  40              '{02d9e6d5-9467-382e-8f9b-9300a64ac3cd}',
  41              '02d9e6d59467382e8f9b9300a64ac3cd',
  42              '\x02\xd9\xe6\xd5\x94\x67\x38\x2e\x8f\x9b\x93\x00\xa6\x4a\xc3\xcd',
  43              '\xd5\xe6\xd9\x02\x67\x94\x2e\x38\x8f\x9b\x93\x00\xa6\x4a\xc3\xcd',
  44              (0x02d9e6d5L, 0x9467, 0x382e, 0x8f, 0x9b, 0x9300a64ac3cdL),
  45              0x02d9e6d59467382e8f9b9300a64ac3cdL,
  46              'urn:uuid:02d9e6d5-9467-382e-8f9b-9300a64ac3cd',
  47              0x82e946702d9e6d5L, 0xf9b, uuid.RFC_4122, 3),
  48             ('12345678-1234-5678-1234-567812345678',
  49              '{12345678-1234-5678-1234-567812345678}',
  50              '12345678123456781234567812345678',
  51              '\x12\x34\x56\x78'*4,
  52              '\x78\x56\x34\x12\x34\x12\x78\x56\x12\x34\x56\x78\x12\x34\x56\x78',
  53              (0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678),
  54              0x12345678123456781234567812345678,
  55              'urn:uuid:12345678-1234-5678-1234-567812345678',
  56              0x678123412345678L, 0x1234, uuid.RESERVED_NCS, None),
  57             ('6ba7b810-9dad-11d1-80b4-00c04fd430c8',
  58              '{6ba7b810-9dad-11d1-80b4-00c04fd430c8}',
  59              '6ba7b8109dad11d180b400c04fd430c8',
  60              '\x6b\xa7\xb8\x10\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  61              '\x10\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  62              (0x6ba7b810L, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8L),
  63              0x6ba7b8109dad11d180b400c04fd430c8L,
  64              'urn:uuid:6ba7b810-9dad-11d1-80b4-00c04fd430c8',
  65              0x1d19dad6ba7b810L, 0xb4, uuid.RFC_4122, 1),
  66             ('6ba7b811-9dad-11d1-80b4-00c04fd430c8',
  67              '{6ba7b811-9dad-11d1-80b4-00c04fd430c8}',
  68              '6ba7b8119dad11d180b400c04fd430c8',
  69              '\x6b\xa7\xb8\x11\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  70              '\x11\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  71              (0x6ba7b811L, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8L),
  72              0x6ba7b8119dad11d180b400c04fd430c8L,
  73              'urn:uuid:6ba7b811-9dad-11d1-80b4-00c04fd430c8',
  74              0x1d19dad6ba7b811L, 0xb4, uuid.RFC_4122, 1),
  75             ('6ba7b812-9dad-11d1-80b4-00c04fd430c8',
  76              '{6ba7b812-9dad-11d1-80b4-00c04fd430c8}',
  77              '6ba7b8129dad11d180b400c04fd430c8',
  78              '\x6b\xa7\xb8\x12\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  79              '\x12\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  80              (0x6ba7b812L, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8L),
  81              0x6ba7b8129dad11d180b400c04fd430c8L,
  82              'urn:uuid:6ba7b812-9dad-11d1-80b4-00c04fd430c8',
  83              0x1d19dad6ba7b812L, 0xb4, uuid.RFC_4122, 1),
  84             ('6ba7b814-9dad-11d1-80b4-00c04fd430c8',
  85              '{6ba7b814-9dad-11d1-80b4-00c04fd430c8}',
  86              '6ba7b8149dad11d180b400c04fd430c8',
  87              '\x6b\xa7\xb8\x14\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  88              '\x14\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
  89              (0x6ba7b814L, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8L),
  90              0x6ba7b8149dad11d180b400c04fd430c8L,
  91              'urn:uuid:6ba7b814-9dad-11d1-80b4-00c04fd430c8',
  92              0x1d19dad6ba7b814L, 0xb4, uuid.RFC_4122, 1),
  93             ('7d444840-9dc0-11d1-b245-5ffdce74fad2',
  94              '{7d444840-9dc0-11d1-b245-5ffdce74fad2}',
  95              '7d4448409dc011d1b2455ffdce74fad2',
  96              '\x7d\x44\x48\x40\x9d\xc0\x11\xd1\xb2\x45\x5f\xfd\xce\x74\xfa\xd2',
  97              '\x40\x48\x44\x7d\xc0\x9d\xd1\x11\xb2\x45\x5f\xfd\xce\x74\xfa\xd2',
  98              (0x7d444840L, 0x9dc0, 0x11d1, 0xb2, 0x45, 0x5ffdce74fad2L),
  99              0x7d4448409dc011d1b2455ffdce74fad2L,
 100              'urn:uuid:7d444840-9dc0-11d1-b245-5ffdce74fad2',
 101              0x1d19dc07d444840L, 0x3245, uuid.RFC_4122, 1),
 102             ('e902893a-9d22-3c7e-a7b8-d6e313b71d9f',
 103              '{e902893a-9d22-3c7e-a7b8-d6e313b71d9f}',
 104              'e902893a9d223c7ea7b8d6e313b71d9f',
 105              '\xe9\x02\x89\x3a\x9d\x22\x3c\x7e\xa7\xb8\xd6\xe3\x13\xb7\x1d\x9f',
 106              '\x3a\x89\x02\xe9\x22\x9d\x7e\x3c\xa7\xb8\xd6\xe3\x13\xb7\x1d\x9f',
 107              (0xe902893aL, 0x9d22, 0x3c7e, 0xa7, 0xb8, 0xd6e313b71d9fL),
 108              0xe902893a9d223c7ea7b8d6e313b71d9fL,
 109              'urn:uuid:e902893a-9d22-3c7e-a7b8-d6e313b71d9f',
 110              0xc7e9d22e902893aL, 0x27b8, uuid.RFC_4122, 3),
 111             ('eb424026-6f54-4ef8-a4d0-bb658a1fc6cf',
 112              '{eb424026-6f54-4ef8-a4d0-bb658a1fc6cf}',
 113              'eb4240266f544ef8a4d0bb658a1fc6cf',
 114              '\xeb\x42\x40\x26\x6f\x54\x4e\xf8\xa4\xd0\xbb\x65\x8a\x1f\xc6\xcf',
 115              '\x26\x40\x42\xeb\x54\x6f\xf8\x4e\xa4\xd0\xbb\x65\x8a\x1f\xc6\xcf',
 116              (0xeb424026L, 0x6f54, 0x4ef8, 0xa4, 0xd0, 0xbb658a1fc6cfL),
 117              0xeb4240266f544ef8a4d0bb658a1fc6cfL,
 118              'urn:uuid:eb424026-6f54-4ef8-a4d0-bb658a1fc6cf',
 119              0xef86f54eb424026L, 0x24d0, uuid.RFC_4122, 4),
 120             ('f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
 121              '{f81d4fae-7dec-11d0-a765-00a0c91e6bf6}',
 122              'f81d4fae7dec11d0a76500a0c91e6bf6',
 123              '\xf8\x1d\x4f\xae\x7d\xec\x11\xd0\xa7\x65\x00\xa0\xc9\x1e\x6b\xf6',
 124              '\xae\x4f\x1d\xf8\xec\x7d\xd0\x11\xa7\x65\x00\xa0\xc9\x1e\x6b\xf6',
 125              (0xf81d4faeL, 0x7dec, 0x11d0, 0xa7, 0x65, 0x00a0c91e6bf6L),
 126              0xf81d4fae7dec11d0a76500a0c91e6bf6L,
 127              'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
 128              0x1d07decf81d4faeL, 0x2765, uuid.RFC_4122, 1),
 129             ('fffefdfc-fffe-fffe-fffe-fffefdfcfbfa',
 130              '{fffefdfc-fffe-fffe-fffe-fffefdfcfbfa}',
 131              'fffefdfcfffefffefffefffefdfcfbfa',
 132              '\xff\xfe\xfd\xfc\xff\xfe\xff\xfe\xff\xfe\xff\xfe\xfd\xfc\xfb\xfa',
 133              '\xfc\xfd\xfe\xff\xfe\xff\xfe\xff\xff\xfe\xff\xfe\xfd\xfc\xfb\xfa',
 134              (0xfffefdfcL, 0xfffe, 0xfffe, 0xff, 0xfe, 0xfffefdfcfbfaL),
 135              0xfffefdfcfffefffefffefffefdfcfbfaL,
 136              'urn:uuid:fffefdfc-fffe-fffe-fffe-fffefdfcfbfa',
 137              0xffefffefffefdfcL, 0x3ffe, uuid.RESERVED_FUTURE, None),
 138             ('ffffffff-ffff-ffff-ffff-ffffffffffff',
 139              '{ffffffff-ffff-ffff-ffff-ffffffffffff}',
 140              'ffffffffffffffffffffffffffffffff',
 141              '\xff'*16,
 142              '\xff'*16,
 143              (0xffffffffL, 0xffffL, 0xffffL, 0xff, 0xff, 0xffffffffffffL),
 144              0xffffffffffffffffffffffffffffffffL,
 145              'urn:uuid:ffffffff-ffff-ffff-ffff-ffffffffffff',
 146              0xfffffffffffffffL, 0x3fff, uuid.RESERVED_FUTURE, None),
 147             ]:
 148             equivalents = []
 149             # Construct each UUID in several different ways.
 150             for u in [uuid.UUID(string), uuid.UUID(curly), uuid.UUID(hex),
 151                       uuid.UUID(bytes=bytes), uuid.UUID(bytes_le=bytes_le),
 152                       uuid.UUID(fields=fields), uuid.UUID(int=integer),
 153                       uuid.UUID(urn)]:
 154                 # Test all conversions and properties of the UUID object.
 155                 equal(str(u), string)
 156                 equal(int(u), integer)
 157                 equal(u.bytes, bytes)
 158                 equal(u.bytes_le, bytes_le)
 159                 equal(u.fields, fields)
 160                 equal(u.time_low, fields[0])
 161                 equal(u.time_mid, fields[1])
 162                 equal(u.time_hi_version, fields[2])
 163                 equal(u.clock_seq_hi_variant, fields[3])
 164                 equal(u.clock_seq_low, fields[4])
 165                 equal(u.node, fields[5])
 166                 equal(u.hex, hex)
 167                 equal(u.int, integer)
 168                 equal(u.urn, urn)
 169                 equal(u.time, time)
 170                 equal(u.clock_seq, clock_seq)
 171                 equal(u.variant, variant)
 172                 equal(u.version, version)
 173                 equivalents.append(u)
 174
 175             # Different construction methods should give the same UUID.
 176             for u in equivalents:
 177                 for v in equivalents:
 178                     equal(u, v)
 179             ascending.append(u)
 180
 181         # Test comparison of UUIDs.
 182         for i in range(len(ascending)):
 183             for j in range(len(ascending)):
 184                 equal(cmp(i, j), cmp(ascending[i], ascending[j]))
 185
 186         # Test sorting of UUIDs (above list is in ascending order).
 187         resorted = ascending[:]
 188         resorted.reverse()
 189         resorted.sort()
 190         equal(ascending, resorted)
 191
 192     def test_exceptions(self):
 193         badvalue = lambda f: self.assertRaises(ValueError, f)
 194         badtype = lambda f: self.assertRaises(TypeError, f)
 195
 196         # Badly formed hex strings.
 197         badvalue(lambda: uuid.UUID(''))
 198         badvalue(lambda: uuid.UUID('abc'))
 199         badvalue(lambda: uuid.UUID('1234567812345678123456781234567'))
 200         badvalue(lambda: uuid.UUID('123456781234567812345678123456789'))
 201         badvalue(lambda: uuid.UUID('123456781234567812345678z2345678'))
 202
 203         # Badly formed bytes.
 204         badvalue(lambda: uuid.UUID(bytes='abc'))
 205         badvalue(lambda: uuid.UUID(bytes='\0'*15))
 206         badvalue(lambda: uuid.UUID(bytes='\0'*17))
 207
 208         # Badly formed bytes_le.
 209         badvalue(lambda: uuid.UUID(bytes_le='abc'))
 210         badvalue(lambda: uuid.UUID(bytes_le='\0'*15))
 211         badvalue(lambda: uuid.UUID(bytes_le='\0'*17))
 212
 213         # Badly formed fields.
 214         badvalue(lambda: uuid.UUID(fields=(1,)))
 215         badvalue(lambda: uuid.UUID(fields=(1, 2, 3, 4, 5)))
 216         badvalue(lambda: uuid.UUID(fields=(1, 2, 3, 4, 5, 6, 7)))
 217
 218         # Field values out of range.
 219         badvalue(lambda: uuid.UUID(fields=(-1, 0, 0, 0, 0, 0)))
 220         badvalue(lambda: uuid.UUID(fields=(0x100000000L, 0, 0, 0, 0, 0)))
 221         badvalue(lambda: uuid.UUID(fields=(0, -1, 0, 0, 0, 0)))
 222         badvalue(lambda: uuid.UUID(fields=(0, 0x10000L, 0, 0, 0, 0)))
 223         badvalue(lambda: uuid.UUID(fields=(0, 0, -1, 0, 0, 0)))
 224         badvalue(lambda: uuid.UUID(fields=(0, 0, 0x10000L, 0, 0, 0)))
 225         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, -1, 0, 0)))
 226         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0x100L, 0, 0)))
 227         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, -1, 0)))
 228         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0x100L, 0)))
 229         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0, -1)))
 230         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0, 0x1000000000000L)))
 231
 232         # Version number out of range.
 233         badvalue(lambda: uuid.UUID('00'*16, version=0))
 234         badvalue(lambda: uuid.UUID('00'*16, version=6))
 235
 236         # Integer value out of range.
 237         badvalue(lambda: uuid.UUID(int=-1))
 238         badvalue(lambda: uuid.UUID(int=1<<128L))
 239
 240         # Must supply exactly one of hex, bytes, fields, int.
 241         h, b, f, i = '00'*16, '\0'*16, (0, 0, 0, 0, 0, 0), 0
 242         uuid.UUID(h)
 243         uuid.UUID(hex=h)
 244         uuid.UUID(bytes=b)
 245         uuid.UUID(bytes_le=b)
 246         uuid.UUID(fields=f)
 247         uuid.UUID(int=i)
 248
 249         # Wrong number of arguments (positional).
 250         badtype(lambda: uuid.UUID())
 251         badtype(lambda: uuid.UUID(h, b))
 252         badtype(lambda: uuid.UUID(h, b, b))
 253         badtype(lambda: uuid.UUID(h, b, b, f))
 254         badtype(lambda: uuid.UUID(h, b, b, f, i))
 255
 256         # Duplicate arguments.
 257         for hh in [[], [('hex', h)]]:
 258             for bb in [[], [('bytes', b)]]:
 259                 for bble in [[], [('bytes_le', b)]]:
 260                     for ii in [[], [('int', i)]]:
 261                         for ff in [[], [('fields', f)]]:
 262                             args = dict(hh + bb + bble + ii + ff)
 263                             if len(args) != 0:
 264                                 badtype(lambda: uuid.UUID(h, **args))
 265                             if len(args) != 1:
 266                                 badtype(lambda: uuid.UUID(**args))
 267
 268         # Immutability.
 269         u = uuid.UUID(h)
 270         badtype(lambda: setattr(u, 'hex', h))
 271         badtype(lambda: setattr(u, 'bytes', b))
 272         badtype(lambda: setattr(u, 'bytes_le', b))
 273         badtype(lambda: setattr(u, 'fields', f))
 274         badtype(lambda: setattr(u, 'int', i))
 275         badtype(lambda: setattr(u, 'time_low', 0))
 276         badtype(lambda: setattr(u, 'time_mid', 0))
 277         badtype(lambda: setattr(u, 'time_hi_version', 0))
 278         badtype(lambda: setattr(u, 'time_hi_version', 0))
 279         badtype(lambda: setattr(u, 'clock_seq_hi_variant', 0))
 280         badtype(lambda: setattr(u, 'clock_seq_low', 0))
 281         badtype(lambda: setattr(u, 'node', 0))
 282
 283     def check_node(self, node, source):
 284         message = "%012x is not an RFC 4122 node ID" % node
 285         self.assertTrue(0 < node, message)
 286         self.assertTrue(node < (1L << 48), message)
 287
 288         TestUUID.source2node[source] = node
 289         if TestUUID.last_node:
 290             if TestUUID.last_node != node:
 291                 msg = "different sources disagree on node:\n"
 292                 for s, n in TestUUID.source2node.iteritems():
 293                     msg += "    from source %r, node was %012x\n" % (s, n)
 294                 # There's actually no reason to expect the MAC addresses
 295                 # to agree across various methods -- e.g., a box may have
 296                 # multiple network interfaces, and different ways of getting
 297                 # a MAC address may favor different HW.
 298                 ##self.fail(msg)
 299         else:
 300             TestUUID.last_node = node
 301
 302     def test_ifconfig_getnode(self):
 303         import sys
 304         import os
 305         if os.name == 'posix':
 306             node = uuid._ifconfig_getnode()
 307             if node is not None:
 308                 self.check_node(node, 'ifconfig')
 309
 310     def test_ipconfig_getnode(self):
 311         import os
 312         if os.name == 'nt':
 313             node = uuid._ipconfig_getnode()
 314             if node is not None:
 315                 self.check_node(node, 'ipconfig')
 316
 317     def test_netbios_getnode(self):
 318         if importable('win32wnet') and importable('netbios'):
 319             self.check_node(uuid._netbios_getnode(), 'netbios')
 320
 321     def test_random_getnode(self):
 322         node = uuid._random_getnode()
 323         # Least significant bit of first octet must be set.
 324         self.assertTrue(node & 0x010000000000)
 325         self.assertTrue(node < (1L << 48))
 326
 327     def test_unixdll_getnode(self):
 328         import sys
 329         import os
 330         if importable('ctypes') and os.name == 'posix':
 331             try: # Issues 1481, 3581: _uuid_generate_time() might be None.
 332                 self.check_node(uuid._unixdll_getnode(), 'unixdll')
 333             except TypeError:
 334                 pass
 335
 336     def test_windll_getnode(self):
 337         import os
 338         if importable('ctypes') and os.name == 'nt':
 339             self.check_node(uuid._windll_getnode(), 'windll')
 340
 341     def test_getnode(self):
 342         import sys
 343         node1 = uuid.getnode()
 344         self.check_node(node1, "getnode1")
 345
 346         # Test it again to ensure consistency.
 347         node2 = uuid.getnode()
 348         self.check_node(node2, "getnode2")
 349
 350         self.assertEqual(node1, node2)
 351
 352     def test_uuid1(self):
 353         # uuid1 requires ctypes.
 354         try:
 355             import ctypes
 356         except ImportError:
 357             return
 358
 359         equal = self.assertEqual
 360
 361         # Make sure uuid1() generates UUIDs that are actually version 1.
 362         for u in [uuid.uuid1() for i in range(10)]:
 363             equal(u.variant, uuid.RFC_4122)
 364             equal(u.version, 1)
 365
 366         # Make sure the generated UUIDs are actually unique.
 367         uuids = {}
 368         for u in [uuid.uuid1() for i in range(1000)]:
 369             uuids[u] = 1
 370         equal(len(uuids.keys()), 1000)
 371
 372         # Make sure the supplied node ID appears in the UUID.
 373         u = uuid.uuid1(0)
 374         equal(u.node, 0)
 375         u = uuid.uuid1(0x123456789abc)
 376         equal(u.node, 0x123456789abc)
 377         u = uuid.uuid1(0xffffffffffff)
 378         equal(u.node, 0xffffffffffff)
 379
 380         # Make sure the supplied clock sequence appears in the UUID.
 381         u = uuid.uuid1(0x123456789abc, 0)
 382         equal(u.node, 0x123456789abc)
 383         equal(((u.clock_seq_hi_variant & 0x3f) << 8) | u.clock_seq_low, 0)
 384         u = uuid.uuid1(0x123456789abc, 0x1234)
 385         equal(u.node, 0x123456789abc)
 386         equal(((u.clock_seq_hi_variant & 0x3f) << 8) |
 387                          u.clock_seq_low, 0x1234)
 388         u = uuid.uuid1(0x123456789abc, 0x3fff)
 389         equal(u.node, 0x123456789abc)
 390         equal(((u.clock_seq_hi_variant & 0x3f) << 8) |
 391                          u.clock_seq_low, 0x3fff)
 392
 393     def test_uuid3(self):
 394         equal = self.assertEqual
 395
 396         # Test some known version-3 UUIDs.
 397         for u, v in [(uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org'),
 398                       '6fa459ea-ee8a-3ca4-894e-db77e160355e'),
 399                      (uuid.uuid3(uuid.NAMESPACE_URL, 'http://python.org/'),
 400                       '9fe8e8c4-aaa8-32a9-a55c-4535a88b748d'),
 401                      (uuid.uuid3(uuid.NAMESPACE_OID, '1.3.6.1'),
 402                       'dd1a1cef-13d5-368a-ad82-eca71acd4cd1'),
 403                      (uuid.uuid3(uuid.NAMESPACE_X500, 'c=ca'),
 404                       '658d3002-db6b-3040-a1d1-8ddd7d189a4d'),
 405                     ]:
 406             equal(u.variant, uuid.RFC_4122)
 407             equal(u.version, 3)
 408             equal(u, uuid.UUID(v))
 409             equal(str(u), v)
 410
 411     def test_uuid4(self):
 412         # uuid4 requires ctypes.
 413         try:
 414             import ctypes
 415         except ImportError:
 416             return
 417
 418         equal = self.assertEqual
 419
 420         # Make sure uuid4() generates UUIDs that are actually version 4.
 421         for u in [uuid.uuid4() for i in range(10)]:
 422             equal(u.variant, uuid.RFC_4122)
 423             equal(u.version, 4)
 424
 425         # Make sure the generated UUIDs are actually unique.
 426         uuids = {}
 427         for u in [uuid.uuid4() for i in range(1000)]:
 428             uuids[u] = 1
 429         equal(len(uuids.keys()), 1000)
 430
 431     def test_uuid5(self):
 432         equal = self.assertEqual
 433
 434         # Test some known version-5 UUIDs.
 435         for u, v in [(uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org'),
 436                       '886313e1-3b8a-5372-9b90-0c9aee199e5d'),
 437                      (uuid.uuid5(uuid.NAMESPACE_URL, 'http://python.org/'),
 438                       '4c565f0d-3f5a-5890-b41b-20cf47701c5e'),
 439                      (uuid.uuid5(uuid.NAMESPACE_OID, '1.3.6.1'),
 440                       '1447fa61-5277-5fef-a9b3-fbc6e44f4af3'),
 441                      (uuid.uuid5(uuid.NAMESPACE_X500, 'c=ca'),
 442                       'cc957dd1-a972-5349-98cd-874190002798'),
 443                     ]:
 444             equal(u.variant, uuid.RFC_4122)
 445             equal(u.version, 5)
 446             equal(u, uuid.UUID(v))
 447             equal(str(u), v)
 448
 449     def testIssue8621(self):
 450         import os
 451         import sys
 452         if os.name != 'posix':
 453             return
 454
 455         # On at least some versions of OSX uuid.uuid4 generates
 456         # the same sequence of UUIDs in the parent and any
 457         # children started using fork.
 458         fds = os.pipe()
 459         pid = os.fork()
 460         if pid == 0:
 461             os.close(fds[0])
 462             value = uuid.uuid4()
 463             os.write(fds[1], value.hex)
 464             os._exit(0)
 465
 466         else:
 467             os.close(fds[1])
 468             parent_value = uuid.uuid4().hex
 469             os.waitpid(pid, 0)
 470             child_value = os.read(fds[0], 100)
 471
 472             self.assertNotEqual(parent_value, child_value)
 473
 474
 475
 476
 477
 478 def test_main():
 479     test_support.run_unittest(TestUUID)
 480
 481 if __name__ == '__main__':
 482     test_main()