Lib/test/test_uuid.py - platform/external/python/cpython3 - Gitiles

 from unittest import TestCase
 from test import support
 import builtins
 import uuid

 def importable(name):
     try:
         __import__(name)
         return True
     except:
         return False

 class TestUUID(TestCase):
     last_node = None
     source2node = {}

     def test_UUID(self):
         equal = self.assertEqual
         ascending = []
         for (string, curly, hex, bytes, bytes_le, fields, integer, urn,
              time, clock_seq, variant, version) in [
             ('00000000-0000-0000-0000-000000000000',
              '{00000000-0000-0000-0000-000000000000}',
              '00000000000000000000000000000000',
              b'\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
              b'\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
              (0, 0, 0, 0, 0, 0),
              0,
              'urn:uuid:00000000-0000-0000-0000-000000000000',
              0, 0, uuid.RESERVED_NCS, None),
             ('00010203-0405-0607-0809-0a0b0c0d0e0f',
              '{00010203-0405-0607-0809-0a0b0c0d0e0f}',
              '000102030405060708090a0b0c0d0e0f',
              b'\0\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\x0d\x0e\x0f',
              b'\x03\x02\x01\0\x05\x04\x07\x06\x08\t\n\x0b\x0c\x0d\x0e\x0f',
              (0x00010203, 0x0405, 0x0607, 8, 9, 0x0a0b0c0d0e0f),
              0x000102030405060708090a0b0c0d0e0f,
              'urn:uuid:00010203-0405-0607-0809-0a0b0c0d0e0f',
              0x607040500010203, 0x809, uuid.RESERVED_NCS, None),
             ('02d9e6d5-9467-382e-8f9b-9300a64ac3cd',
              '{02d9e6d5-9467-382e-8f9b-9300a64ac3cd}',
              '02d9e6d59467382e8f9b9300a64ac3cd',
              b'\x02\xd9\xe6\xd5\x94\x67\x38\x2e\x8f\x9b\x93\x00\xa6\x4a\xc3\xcd',
              b'\xd5\xe6\xd9\x02\x67\x94\x2e\x38\x8f\x9b\x93\x00\xa6\x4a\xc3\xcd',
              (0x02d9e6d5, 0x9467, 0x382e, 0x8f, 0x9b, 0x9300a64ac3cd),
              0x02d9e6d59467382e8f9b9300a64ac3cd,
              'urn:uuid:02d9e6d5-9467-382e-8f9b-9300a64ac3cd',
              0x82e946702d9e6d5, 0xf9b, uuid.RFC_4122, 3),
             ('12345678-1234-5678-1234-567812345678',
              '{12345678-1234-5678-1234-567812345678}',
              '12345678123456781234567812345678',
              b'\x12\x34\x56\x78'*4,
              b'\x78\x56\x34\x12\x34\x12\x78\x56\x12\x34\x56\x78\x12\x34\x56\x78',
              (0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678),
              0x12345678123456781234567812345678,
              'urn:uuid:12345678-1234-5678-1234-567812345678',
              0x678123412345678, 0x1234, uuid.RESERVED_NCS, None),
             ('6ba7b810-9dad-11d1-80b4-00c04fd430c8',
              '{6ba7b810-9dad-11d1-80b4-00c04fd430c8}',
              '6ba7b8109dad11d180b400c04fd430c8',
              b'\x6b\xa7\xb8\x10\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              b'\x10\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              (0x6ba7b810, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
              0x6ba7b8109dad11d180b400c04fd430c8,
              'urn:uuid:6ba7b810-9dad-11d1-80b4-00c04fd430c8',
              0x1d19dad6ba7b810, 0xb4, uuid.RFC_4122, 1),
             ('6ba7b811-9dad-11d1-80b4-00c04fd430c8',
              '{6ba7b811-9dad-11d1-80b4-00c04fd430c8}',
              '6ba7b8119dad11d180b400c04fd430c8',
              b'\x6b\xa7\xb8\x11\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              b'\x11\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              (0x6ba7b811, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
              0x6ba7b8119dad11d180b400c04fd430c8,
              'urn:uuid:6ba7b811-9dad-11d1-80b4-00c04fd430c8',
              0x1d19dad6ba7b811, 0xb4, uuid.RFC_4122, 1),
             ('6ba7b812-9dad-11d1-80b4-00c04fd430c8',
              '{6ba7b812-9dad-11d1-80b4-00c04fd430c8}',
              '6ba7b8129dad11d180b400c04fd430c8',
              b'\x6b\xa7\xb8\x12\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              b'\x12\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              (0x6ba7b812, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
              0x6ba7b8129dad11d180b400c04fd430c8,
              'urn:uuid:6ba7b812-9dad-11d1-80b4-00c04fd430c8',
              0x1d19dad6ba7b812, 0xb4, uuid.RFC_4122, 1),
             ('6ba7b814-9dad-11d1-80b4-00c04fd430c8',
              '{6ba7b814-9dad-11d1-80b4-00c04fd430c8}',
              '6ba7b8149dad11d180b400c04fd430c8',
              b'\x6b\xa7\xb8\x14\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              b'\x14\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
              (0x6ba7b814, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
              0x6ba7b8149dad11d180b400c04fd430c8,
              'urn:uuid:6ba7b814-9dad-11d1-80b4-00c04fd430c8',
              0x1d19dad6ba7b814, 0xb4, uuid.RFC_4122, 1),
             ('7d444840-9dc0-11d1-b245-5ffdce74fad2',
              '{7d444840-9dc0-11d1-b245-5ffdce74fad2}',
              '7d4448409dc011d1b2455ffdce74fad2',
              b'\x7d\x44\x48\x40\x9d\xc0\x11\xd1\xb2\x45\x5f\xfd\xce\x74\xfa\xd2',
              b'\x40\x48\x44\x7d\xc0\x9d\xd1\x11\xb2\x45\x5f\xfd\xce\x74\xfa\xd2',
              (0x7d444840, 0x9dc0, 0x11d1, 0xb2, 0x45, 0x5ffdce74fad2),
              0x7d4448409dc011d1b2455ffdce74fad2,
              'urn:uuid:7d444840-9dc0-11d1-b245-5ffdce74fad2',
              0x1d19dc07d444840, 0x3245, uuid.RFC_4122, 1),
             ('e902893a-9d22-3c7e-a7b8-d6e313b71d9f',
              '{e902893a-9d22-3c7e-a7b8-d6e313b71d9f}',
              'e902893a9d223c7ea7b8d6e313b71d9f',
              b'\xe9\x02\x89\x3a\x9d\x22\x3c\x7e\xa7\xb8\xd6\xe3\x13\xb7\x1d\x9f',
              b'\x3a\x89\x02\xe9\x22\x9d\x7e\x3c\xa7\xb8\xd6\xe3\x13\xb7\x1d\x9f',
              (0xe902893a, 0x9d22, 0x3c7e, 0xa7, 0xb8, 0xd6e313b71d9f),
              0xe902893a9d223c7ea7b8d6e313b71d9f,
              'urn:uuid:e902893a-9d22-3c7e-a7b8-d6e313b71d9f',
              0xc7e9d22e902893a, 0x27b8, uuid.RFC_4122, 3),
             ('eb424026-6f54-4ef8-a4d0-bb658a1fc6cf',
              '{eb424026-6f54-4ef8-a4d0-bb658a1fc6cf}',
              'eb4240266f544ef8a4d0bb658a1fc6cf',
              b'\xeb\x42\x40\x26\x6f\x54\x4e\xf8\xa4\xd0\xbb\x65\x8a\x1f\xc6\xcf',
              b'\x26\x40\x42\xeb\x54\x6f\xf8\x4e\xa4\xd0\xbb\x65\x8a\x1f\xc6\xcf',
              (0xeb424026, 0x6f54, 0x4ef8, 0xa4, 0xd0, 0xbb658a1fc6cf),
              0xeb4240266f544ef8a4d0bb658a1fc6cf,
              'urn:uuid:eb424026-6f54-4ef8-a4d0-bb658a1fc6cf',
              0xef86f54eb424026, 0x24d0, uuid.RFC_4122, 4),
             ('f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
              '{f81d4fae-7dec-11d0-a765-00a0c91e6bf6}',
              'f81d4fae7dec11d0a76500a0c91e6bf6',
              b'\xf8\x1d\x4f\xae\x7d\xec\x11\xd0\xa7\x65\x00\xa0\xc9\x1e\x6b\xf6',
              b'\xae\x4f\x1d\xf8\xec\x7d\xd0\x11\xa7\x65\x00\xa0\xc9\x1e\x6b\xf6',
              (0xf81d4fae, 0x7dec, 0x11d0, 0xa7, 0x65, 0x00a0c91e6bf6),
              0xf81d4fae7dec11d0a76500a0c91e6bf6,
              'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
              0x1d07decf81d4fae, 0x2765, uuid.RFC_4122, 1),
             ('fffefdfc-fffe-fffe-fffe-fffefdfcfbfa',
              '{fffefdfc-fffe-fffe-fffe-fffefdfcfbfa}',
              'fffefdfcfffefffefffefffefdfcfbfa',
              b'\xff\xfe\xfd\xfc\xff\xfe\xff\xfe\xff\xfe\xff\xfe\xfd\xfc\xfb\xfa',
              b'\xfc\xfd\xfe\xff\xfe\xff\xfe\xff\xff\xfe\xff\xfe\xfd\xfc\xfb\xfa',
              (0xfffefdfc, 0xfffe, 0xfffe, 0xff, 0xfe, 0xfffefdfcfbfa),
              0xfffefdfcfffefffefffefffefdfcfbfa,
              'urn:uuid:fffefdfc-fffe-fffe-fffe-fffefdfcfbfa',
              0xffefffefffefdfc, 0x3ffe, uuid.RESERVED_FUTURE, None),
             ('ffffffff-ffff-ffff-ffff-ffffffffffff',
              '{ffffffff-ffff-ffff-ffff-ffffffffffff}',
              'ffffffffffffffffffffffffffffffff',
              b'\xff'*16,
              b'\xff'*16,
              (0xffffffff, 0xffff, 0xffff, 0xff, 0xff, 0xffffffffffff),
              0xffffffffffffffffffffffffffffffff,
              'urn:uuid:ffffffff-ffff-ffff-ffff-ffffffffffff',
              0xfffffffffffffff, 0x3fff, uuid.RESERVED_FUTURE, None),
             ]:
             equivalents = []
             # Construct each UUID in several different ways.
             for u in [uuid.UUID(string), uuid.UUID(curly), uuid.UUID(hex),
                       uuid.UUID(bytes=bytes), uuid.UUID(bytes_le=bytes_le),
                       uuid.UUID(fields=fields), uuid.UUID(int=integer),
                       uuid.UUID(urn)]:
                 # Test all conversions and properties of the UUID object.
                 equal(str(u), string)
                 equal(int(u), integer)
                 equal(u.bytes, bytes)
                 equal(u.bytes_le, bytes_le)
                 equal(u.fields, fields)
                 equal(u.time_low, fields[0])
                 equal(u.time_mid, fields[1])
                 equal(u.time_hi_version, fields[2])
                 equal(u.clock_seq_hi_variant, fields[3])
                 equal(u.clock_seq_low, fields[4])
                 equal(u.node, fields[5])
                 equal(u.hex, hex)
                 equal(u.int, integer)
                 equal(u.urn, urn)
                 equal(u.time, time)
                 equal(u.clock_seq, clock_seq)
                 equal(u.variant, variant)
                 equal(u.version, version)
                 equivalents.append(u)

             # Different construction methods should give the same UUID.
             for u in equivalents:
                 for v in equivalents:
                     equal(u, v)

             # Bug 7380: "bytes" and "bytes_le" should give the same type.
             equal(type(u.bytes), builtins.bytes)
             equal(type(u.bytes_le), builtins.bytes)

             ascending.append(u)

         # Test comparison of UUIDs.
         for i in range(len(ascending)):
             for j in range(len(ascending)):
                 equal(i < j, ascending[i] < ascending[j])
                 equal(i <= j, ascending[i] <= ascending[j])
                 equal(i == j, ascending[i] == ascending[j])
                 equal(i > j, ascending[i] > ascending[j])
                 equal(i >= j, ascending[i] >= ascending[j])
                 equal(i != j, ascending[i] != ascending[j])

         # Test sorting of UUIDs (above list is in ascending order).
         resorted = ascending[:]
         resorted.reverse()
         resorted.sort()
         equal(ascending, resorted)

     def test_exceptions(self):
         badvalue = lambda f: self.assertRaises(ValueError, f)
         badtype = lambda f: self.assertRaises(TypeError, f)

         # Badly formed hex strings.
         badvalue(lambda: uuid.UUID(''))
         badvalue(lambda: uuid.UUID('abc'))
         badvalue(lambda: uuid.UUID('1234567812345678123456781234567'))
         badvalue(lambda: uuid.UUID('123456781234567812345678123456789'))
         badvalue(lambda: uuid.UUID('123456781234567812345678z2345678'))

         # Badly formed bytes.
         badvalue(lambda: uuid.UUID(bytes='abc'))
         badvalue(lambda: uuid.UUID(bytes='\0'*15))
         badvalue(lambda: uuid.UUID(bytes='\0'*17))

         # Badly formed bytes_le.
         badvalue(lambda: uuid.UUID(bytes_le='abc'))
         badvalue(lambda: uuid.UUID(bytes_le='\0'*15))
         badvalue(lambda: uuid.UUID(bytes_le='\0'*17))

         # Badly formed fields.
         badvalue(lambda: uuid.UUID(fields=(1,)))
         badvalue(lambda: uuid.UUID(fields=(1, 2, 3, 4, 5)))
         badvalue(lambda: uuid.UUID(fields=(1, 2, 3, 4, 5, 6, 7)))

         # Field values out of range.
         badvalue(lambda: uuid.UUID(fields=(-1, 0, 0, 0, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0x100000000, 0, 0, 0, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, -1, 0, 0, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0x10000, 0, 0, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, -1, 0, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0x10000, 0, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, -1, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0x100, 0, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, -1, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0x100, 0)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0, -1)))
         badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0, 0x1000000000000)))

         # Version number out of range.
         badvalue(lambda: uuid.UUID('00'*16, version=0))
         badvalue(lambda: uuid.UUID('00'*16, version=6))

         # Integer value out of range.
         badvalue(lambda: uuid.UUID(int=-1))
         badvalue(lambda: uuid.UUID(int=1<<128))

         # Must supply exactly one of hex, bytes, fields, int.
         h, b, f, i = '00'*16, b'\0'*16, (0, 0, 0, 0, 0, 0), 0
         uuid.UUID(h)
         uuid.UUID(hex=h)
         uuid.UUID(bytes=b)
         uuid.UUID(bytes_le=b)
         uuid.UUID(fields=f)
         uuid.UUID(int=i)

         # Wrong number of arguments (positional).
         badtype(lambda: uuid.UUID())
         badtype(lambda: uuid.UUID(h, b))
         badtype(lambda: uuid.UUID(h, b, b))
         badtype(lambda: uuid.UUID(h, b, b, f))
         badtype(lambda: uuid.UUID(h, b, b, f, i))

         # Duplicate arguments.
         for hh in [[], [('hex', h)]]:
             for bb in [[], [('bytes', b)]]:
                 for bble in [[], [('bytes_le', b)]]:
                     for ii in [[], [('int', i)]]:
                         for ff in [[], [('fields', f)]]:
                             args = dict(hh + bb + bble + ii + ff)
                             if len(args) != 0:
                                 badtype(lambda: uuid.UUID(h, **args))
                             if len(args) != 1:
                                 badtype(lambda: uuid.UUID(**args))

         # Immutability.
         u = uuid.UUID(h)
         badtype(lambda: setattr(u, 'hex', h))
         badtype(lambda: setattr(u, 'bytes', b))
         badtype(lambda: setattr(u, 'bytes_le', b))
         badtype(lambda: setattr(u, 'fields', f))
         badtype(lambda: setattr(u, 'int', i))
         badtype(lambda: setattr(u, 'time_low', 0))
         badtype(lambda: setattr(u, 'time_mid', 0))
         badtype(lambda: setattr(u, 'time_hi_version', 0))
         badtype(lambda: setattr(u, 'time_hi_version', 0))
         badtype(lambda: setattr(u, 'clock_seq_hi_variant', 0))
         badtype(lambda: setattr(u, 'clock_seq_low', 0))
         badtype(lambda: setattr(u, 'node', 0))

     def check_node(self, node, source):
         message = "%012x is not an RFC 4122 node ID" % node
         self.assertTrue(0 < node, message)
         self.assertTrue(node < (1 << 48), message)

         TestUUID.source2node[source] = node
         if TestUUID.last_node:
             if TestUUID.last_node != node:
                 msg = "different sources disagree on node:\n"
                 for s, n in TestUUID.source2node.items():
                     msg += "    from source %r, node was %012x\n" % (s, n)
                 # There's actually no reason to expect the MAC addresses
                 # to agree across various methods -- e.g., a box may have
                 # multiple network interfaces, and different ways of getting
                 # a MAC address may favor different HW.
                 ##self.fail(msg)
         else:
             TestUUID.last_node = node

     def test_ifconfig_getnode(self):
         import sys
         import os
         if os.name == 'posix':
             node = uuid._ifconfig_getnode()
             if node is not None:
                 self.check_node(node, 'ifconfig')

     def test_ipconfig_getnode(self):
         import os
         if os.name == 'nt':
             node = uuid._ipconfig_getnode()
             if node is not None:
                 self.check_node(node, 'ipconfig')

     def test_netbios_getnode(self):
         if importable('win32wnet') and importable('netbios'):
             self.check_node(uuid._netbios_getnode(), 'netbios')

     def test_random_getnode(self):
         node = uuid._random_getnode()
         # Least significant bit of first octet must be set.
         self.assertTrue(node & 0x010000000000)
         self.assertTrue(node < (1 << 48))

     def test_unixdll_getnode(self):
         import sys
         import os
         if importable('ctypes') and os.name == 'posix':
             try: # Issues 1481, 3581: _uuid_generate_time() might be None.
                 self.check_node(uuid._unixdll_getnode(), 'unixdll')
             except TypeError:
                 pass

     def test_windll_getnode(self):
         import os
         if importable('ctypes') and os.name == 'nt':
             self.check_node(uuid._windll_getnode(), 'windll')

     def test_getnode(self):
         import sys
         node1 = uuid.getnode()
         self.check_node(node1, "getnode1")

         # Test it again to ensure consistency.
         node2 = uuid.getnode()
         self.check_node(node2, "getnode2")

         self.assertEqual(node1, node2)

     def test_uuid1(self):
         # uuid1 requires ctypes.
         try:
             import ctypes
         except ImportError:
             return

         equal = self.assertEqual

         # Make sure uuid1() generates UUIDs that are actually version 1.
         for u in [uuid.uuid1() for i in range(10)]:
             equal(u.variant, uuid.RFC_4122)
             equal(u.version, 1)

         # Make sure the generated UUIDs are actually unique.
         uuids = {}
         for u in [uuid.uuid1() for i in range(1000)]:
             uuids[u] = 1
         equal(len(uuids.keys()), 1000)

         # Make sure the supplied node ID appears in the UUID.
         u = uuid.uuid1(0)
         equal(u.node, 0)
         u = uuid.uuid1(0x123456789abc)
         equal(u.node, 0x123456789abc)
         u = uuid.uuid1(0xffffffffffff)
         equal(u.node, 0xffffffffffff)

         # Make sure the supplied clock sequence appears in the UUID.
         u = uuid.uuid1(0x123456789abc, 0)
         equal(u.node, 0x123456789abc)
         equal(((u.clock_seq_hi_variant & 0x3f) << 8) | u.clock_seq_low, 0)
         u = uuid.uuid1(0x123456789abc, 0x1234)
         equal(u.node, 0x123456789abc)
         equal(((u.clock_seq_hi_variant & 0x3f) << 8) |
                          u.clock_seq_low, 0x1234)
         u = uuid.uuid1(0x123456789abc, 0x3fff)
         equal(u.node, 0x123456789abc)
         equal(((u.clock_seq_hi_variant & 0x3f) << 8) |
                          u.clock_seq_low, 0x3fff)

     def test_uuid3(self):
         equal = self.assertEqual

         # Test some known version-3 UUIDs.
         for u, v in [(uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org'),
                       '6fa459ea-ee8a-3ca4-894e-db77e160355e'),
                      (uuid.uuid3(uuid.NAMESPACE_URL, 'http://python.org/'),
                       '9fe8e8c4-aaa8-32a9-a55c-4535a88b748d'),
                      (uuid.uuid3(uuid.NAMESPACE_OID, '1.3.6.1'),
                       'dd1a1cef-13d5-368a-ad82-eca71acd4cd1'),
                      (uuid.uuid3(uuid.NAMESPACE_X500, 'c=ca'),
                       '658d3002-db6b-3040-a1d1-8ddd7d189a4d'),
                     ]:
             equal(u.variant, uuid.RFC_4122)
             equal(u.version, 3)
             equal(u, uuid.UUID(v))
             equal(str(u), v)

     def test_uuid4(self):
         # uuid4 requires ctypes.
         try:
             import ctypes
         except ImportError:
             return

         equal = self.assertEqual

         # Make sure uuid4() generates UUIDs that are actually version 4.
         for u in [uuid.uuid4() for i in range(10)]:
             equal(u.variant, uuid.RFC_4122)
             equal(u.version, 4)

         # Make sure the generated UUIDs are actually unique.
         uuids = {}
         for u in [uuid.uuid4() for i in range(1000)]:
             uuids[u] = 1
         equal(len(uuids.keys()), 1000)

     def test_uuid5(self):
         equal = self.assertEqual

         # Test some known version-5 UUIDs.
         for u, v in [(uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org'),
                       '886313e1-3b8a-5372-9b90-0c9aee199e5d'),
                      (uuid.uuid5(uuid.NAMESPACE_URL, 'http://python.org/'),
                       '4c565f0d-3f5a-5890-b41b-20cf47701c5e'),
                      (uuid.uuid5(uuid.NAMESPACE_OID, '1.3.6.1'),
                       '1447fa61-5277-5fef-a9b3-fbc6e44f4af3'),
                      (uuid.uuid5(uuid.NAMESPACE_X500, 'c=ca'),
                       'cc957dd1-a972-5349-98cd-874190002798'),
                     ]:
             equal(u.variant, uuid.RFC_4122)
             equal(u.version, 5)
             equal(u, uuid.UUID(v))
             equal(str(u), v)

     def testIssue8621(self):
         import os
         import sys
         if os.name != 'posix':
             return

         # On at least some versions of OSX uuid.uuid4 generates
         # the same sequence of UUIDs in the parent and any
         # children started using fork.
         fds = os.pipe()
         pid = os.fork()
         if pid == 0:
             os.close(fds[0])
             value = uuid.uuid4()
             os.write(fds[1], value.hex.encode('latin-1'))
             os._exit(0)

         else:
             os.close(fds[1])
             parent_value = uuid.uuid4().hex
             os.waitpid(pid, 0)
             child_value = os.read(fds[0], 100).decode('latin-1')

             self.assertNotEqual(parent_value, child_value)


 def test_main():
     support.run_unittest(TestUUID)

 if __name__ == '__main__':
     test_main()
	from unittest import TestCase
	from test import support
	import builtins
	import uuid

	def importable(name):
	try:
	__import__(name)
	return True
	except:
	return False

	class TestUUID(TestCase):
	last_node = None
	source2node = {}

	def test_UUID(self):
	equal = self.assertEqual
	ascending = []
	for (string, curly, hex, bytes, bytes_le, fields, integer, urn,
	time, clock_seq, variant, version) in [
	('00000000-0000-0000-0000-000000000000',
	'{00000000-0000-0000-0000-000000000000}',
	'00000000000000000000000000000000',
	b'\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
	b'\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
	(0, 0, 0, 0, 0, 0),
	0,
	'urn:uuid:00000000-0000-0000-0000-000000000000',
	0, 0, uuid.RESERVED_NCS, None),
	('00010203-0405-0607-0809-0a0b0c0d0e0f',
	'{00010203-0405-0607-0809-0a0b0c0d0e0f}',
	'000102030405060708090a0b0c0d0e0f',
	b'\0\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\x0d\x0e\x0f',
	b'\x03\x02\x01\0\x05\x04\x07\x06\x08\t\n\x0b\x0c\x0d\x0e\x0f',
	(0x00010203, 0x0405, 0x0607, 8, 9, 0x0a0b0c0d0e0f),
	0x000102030405060708090a0b0c0d0e0f,
	'urn:uuid:00010203-0405-0607-0809-0a0b0c0d0e0f',
	0x607040500010203, 0x809, uuid.RESERVED_NCS, None),
	('02d9e6d5-9467-382e-8f9b-9300a64ac3cd',
	'{02d9e6d5-9467-382e-8f9b-9300a64ac3cd}',
	'02d9e6d59467382e8f9b9300a64ac3cd',
	b'\x02\xd9\xe6\xd5\x94\x67\x38\x2e\x8f\x9b\x93\x00\xa6\x4a\xc3\xcd',
	b'\xd5\xe6\xd9\x02\x67\x94\x2e\x38\x8f\x9b\x93\x00\xa6\x4a\xc3\xcd',
	(0x02d9e6d5, 0x9467, 0x382e, 0x8f, 0x9b, 0x9300a64ac3cd),
	0x02d9e6d59467382e8f9b9300a64ac3cd,
	'urn:uuid:02d9e6d5-9467-382e-8f9b-9300a64ac3cd',
	0x82e946702d9e6d5, 0xf9b, uuid.RFC_4122, 3),
	('12345678-1234-5678-1234-567812345678',
	'{12345678-1234-5678-1234-567812345678}',
	'12345678123456781234567812345678',
	b'\x12\x34\x56\x78'*4,
	b'\x78\x56\x34\x12\x34\x12\x78\x56\x12\x34\x56\x78\x12\x34\x56\x78',
	(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678),
	0x12345678123456781234567812345678,
	'urn:uuid:12345678-1234-5678-1234-567812345678',
	0x678123412345678, 0x1234, uuid.RESERVED_NCS, None),
	('6ba7b810-9dad-11d1-80b4-00c04fd430c8',
	'{6ba7b810-9dad-11d1-80b4-00c04fd430c8}',
	'6ba7b8109dad11d180b400c04fd430c8',
	b'\x6b\xa7\xb8\x10\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	b'\x10\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	(0x6ba7b810, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
	0x6ba7b8109dad11d180b400c04fd430c8,
	'urn:uuid:6ba7b810-9dad-11d1-80b4-00c04fd430c8',
	0x1d19dad6ba7b810, 0xb4, uuid.RFC_4122, 1),
	('6ba7b811-9dad-11d1-80b4-00c04fd430c8',
	'{6ba7b811-9dad-11d1-80b4-00c04fd430c8}',
	'6ba7b8119dad11d180b400c04fd430c8',
	b'\x6b\xa7\xb8\x11\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	b'\x11\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	(0x6ba7b811, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
	0x6ba7b8119dad11d180b400c04fd430c8,
	'urn:uuid:6ba7b811-9dad-11d1-80b4-00c04fd430c8',
	0x1d19dad6ba7b811, 0xb4, uuid.RFC_4122, 1),
	('6ba7b812-9dad-11d1-80b4-00c04fd430c8',
	'{6ba7b812-9dad-11d1-80b4-00c04fd430c8}',
	'6ba7b8129dad11d180b400c04fd430c8',
	b'\x6b\xa7\xb8\x12\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	b'\x12\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	(0x6ba7b812, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
	0x6ba7b8129dad11d180b400c04fd430c8,
	'urn:uuid:6ba7b812-9dad-11d1-80b4-00c04fd430c8',
	0x1d19dad6ba7b812, 0xb4, uuid.RFC_4122, 1),
	('6ba7b814-9dad-11d1-80b4-00c04fd430c8',
	'{6ba7b814-9dad-11d1-80b4-00c04fd430c8}',
	'6ba7b8149dad11d180b400c04fd430c8',
	b'\x6b\xa7\xb8\x14\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	b'\x14\xb8\xa7\x6b\xad\x9d\xd1\x11\x80\xb4\x00\xc0\x4f\xd4\x30\xc8',
	(0x6ba7b814, 0x9dad, 0x11d1, 0x80, 0xb4, 0x00c04fd430c8),
	0x6ba7b8149dad11d180b400c04fd430c8,
	'urn:uuid:6ba7b814-9dad-11d1-80b4-00c04fd430c8',
	0x1d19dad6ba7b814, 0xb4, uuid.RFC_4122, 1),
	('7d444840-9dc0-11d1-b245-5ffdce74fad2',
	'{7d444840-9dc0-11d1-b245-5ffdce74fad2}',
	'7d4448409dc011d1b2455ffdce74fad2',
	b'\x7d\x44\x48\x40\x9d\xc0\x11\xd1\xb2\x45\x5f\xfd\xce\x74\xfa\xd2',
	b'\x40\x48\x44\x7d\xc0\x9d\xd1\x11\xb2\x45\x5f\xfd\xce\x74\xfa\xd2',
	(0x7d444840, 0x9dc0, 0x11d1, 0xb2, 0x45, 0x5ffdce74fad2),
	0x7d4448409dc011d1b2455ffdce74fad2,
	'urn:uuid:7d444840-9dc0-11d1-b245-5ffdce74fad2',
	0x1d19dc07d444840, 0x3245, uuid.RFC_4122, 1),
	('e902893a-9d22-3c7e-a7b8-d6e313b71d9f',
	'{e902893a-9d22-3c7e-a7b8-d6e313b71d9f}',
	'e902893a9d223c7ea7b8d6e313b71d9f',
	b'\xe9\x02\x89\x3a\x9d\x22\x3c\x7e\xa7\xb8\xd6\xe3\x13\xb7\x1d\x9f',
	b'\x3a\x89\x02\xe9\x22\x9d\x7e\x3c\xa7\xb8\xd6\xe3\x13\xb7\x1d\x9f',
	(0xe902893a, 0x9d22, 0x3c7e, 0xa7, 0xb8, 0xd6e313b71d9f),
	0xe902893a9d223c7ea7b8d6e313b71d9f,
	'urn:uuid:e902893a-9d22-3c7e-a7b8-d6e313b71d9f',
	0xc7e9d22e902893a, 0x27b8, uuid.RFC_4122, 3),
	('eb424026-6f54-4ef8-a4d0-bb658a1fc6cf',
	'{eb424026-6f54-4ef8-a4d0-bb658a1fc6cf}',
	'eb4240266f544ef8a4d0bb658a1fc6cf',
	b'\xeb\x42\x40\x26\x6f\x54\x4e\xf8\xa4\xd0\xbb\x65\x8a\x1f\xc6\xcf',
	b'\x26\x40\x42\xeb\x54\x6f\xf8\x4e\xa4\xd0\xbb\x65\x8a\x1f\xc6\xcf',
	(0xeb424026, 0x6f54, 0x4ef8, 0xa4, 0xd0, 0xbb658a1fc6cf),
	0xeb4240266f544ef8a4d0bb658a1fc6cf,
	'urn:uuid:eb424026-6f54-4ef8-a4d0-bb658a1fc6cf',
	0xef86f54eb424026, 0x24d0, uuid.RFC_4122, 4),
	('f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
	'{f81d4fae-7dec-11d0-a765-00a0c91e6bf6}',
	'f81d4fae7dec11d0a76500a0c91e6bf6',
	b'\xf8\x1d\x4f\xae\x7d\xec\x11\xd0\xa7\x65\x00\xa0\xc9\x1e\x6b\xf6',
	b'\xae\x4f\x1d\xf8\xec\x7d\xd0\x11\xa7\x65\x00\xa0\xc9\x1e\x6b\xf6',
	(0xf81d4fae, 0x7dec, 0x11d0, 0xa7, 0x65, 0x00a0c91e6bf6),
	0xf81d4fae7dec11d0a76500a0c91e6bf6,
	'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
	0x1d07decf81d4fae, 0x2765, uuid.RFC_4122, 1),
	('fffefdfc-fffe-fffe-fffe-fffefdfcfbfa',
	'{fffefdfc-fffe-fffe-fffe-fffefdfcfbfa}',
	'fffefdfcfffefffefffefffefdfcfbfa',
	b'\xff\xfe\xfd\xfc\xff\xfe\xff\xfe\xff\xfe\xff\xfe\xfd\xfc\xfb\xfa',
	b'\xfc\xfd\xfe\xff\xfe\xff\xfe\xff\xff\xfe\xff\xfe\xfd\xfc\xfb\xfa',
	(0xfffefdfc, 0xfffe, 0xfffe, 0xff, 0xfe, 0xfffefdfcfbfa),
	0xfffefdfcfffefffefffefffefdfcfbfa,
	'urn:uuid:fffefdfc-fffe-fffe-fffe-fffefdfcfbfa',
	0xffefffefffefdfc, 0x3ffe, uuid.RESERVED_FUTURE, None),
	('ffffffff-ffff-ffff-ffff-ffffffffffff',
	'{ffffffff-ffff-ffff-ffff-ffffffffffff}',
	'ffffffffffffffffffffffffffffffff',
	b'\xff'*16,
	b'\xff'*16,
	(0xffffffff, 0xffff, 0xffff, 0xff, 0xff, 0xffffffffffff),
	0xffffffffffffffffffffffffffffffff,
	'urn:uuid:ffffffff-ffff-ffff-ffff-ffffffffffff',
	0xfffffffffffffff, 0x3fff, uuid.RESERVED_FUTURE, None),
	]:
	equivalents = []
	# Construct each UUID in several different ways.
	for u in [uuid.UUID(string), uuid.UUID(curly), uuid.UUID(hex),
	uuid.UUID(bytes=bytes), uuid.UUID(bytes_le=bytes_le),
	uuid.UUID(fields=fields), uuid.UUID(int=integer),
	uuid.UUID(urn)]:
	# Test all conversions and properties of the UUID object.
	equal(str(u), string)
	equal(int(u), integer)
	equal(u.bytes, bytes)
	equal(u.bytes_le, bytes_le)
	equal(u.fields, fields)
	equal(u.time_low, fields[0])
	equal(u.time_mid, fields[1])
	equal(u.time_hi_version, fields[2])
	equal(u.clock_seq_hi_variant, fields[3])
	equal(u.clock_seq_low, fields[4])
	equal(u.node, fields[5])
	equal(u.hex, hex)
	equal(u.int, integer)
	equal(u.urn, urn)
	equal(u.time, time)
	equal(u.clock_seq, clock_seq)
	equal(u.variant, variant)
	equal(u.version, version)
	equivalents.append(u)

	# Different construction methods should give the same UUID.
	for u in equivalents:
	for v in equivalents:
	equal(u, v)

	# Bug 7380: "bytes" and "bytes_le" should give the same type.
	equal(type(u.bytes), builtins.bytes)
	equal(type(u.bytes_le), builtins.bytes)

	ascending.append(u)

	# Test comparison of UUIDs.
	for i in range(len(ascending)):
	for j in range(len(ascending)):
	equal(i < j, ascending[i] < ascending[j])
	equal(i <= j, ascending[i] <= ascending[j])
	equal(i == j, ascending[i] == ascending[j])
	equal(i > j, ascending[i] > ascending[j])
	equal(i >= j, ascending[i] >= ascending[j])
	equal(i != j, ascending[i] != ascending[j])

	# Test sorting of UUIDs (above list is in ascending order).
	resorted = ascending[:]
	resorted.reverse()
	resorted.sort()
	equal(ascending, resorted)

	def test_exceptions(self):
	badvalue = lambda f: self.assertRaises(ValueError, f)
	badtype = lambda f: self.assertRaises(TypeError, f)

	# Badly formed hex strings.
	badvalue(lambda: uuid.UUID(''))
	badvalue(lambda: uuid.UUID('abc'))
	badvalue(lambda: uuid.UUID('1234567812345678123456781234567'))
	badvalue(lambda: uuid.UUID('123456781234567812345678123456789'))
	badvalue(lambda: uuid.UUID('123456781234567812345678z2345678'))

	# Badly formed bytes.
	badvalue(lambda: uuid.UUID(bytes='abc'))
	badvalue(lambda: uuid.UUID(bytes='\0'*15))
	badvalue(lambda: uuid.UUID(bytes='\0'*17))

	# Badly formed bytes_le.
	badvalue(lambda: uuid.UUID(bytes_le='abc'))
	badvalue(lambda: uuid.UUID(bytes_le='\0'*15))
	badvalue(lambda: uuid.UUID(bytes_le='\0'*17))

	# Badly formed fields.
	badvalue(lambda: uuid.UUID(fields=(1,)))
	badvalue(lambda: uuid.UUID(fields=(1, 2, 3, 4, 5)))
	badvalue(lambda: uuid.UUID(fields=(1, 2, 3, 4, 5, 6, 7)))

	# Field values out of range.
	badvalue(lambda: uuid.UUID(fields=(-1, 0, 0, 0, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0x100000000, 0, 0, 0, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, -1, 0, 0, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0x10000, 0, 0, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, -1, 0, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0x10000, 0, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0, -1, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0x100, 0, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, -1, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0x100, 0)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0, -1)))
	badvalue(lambda: uuid.UUID(fields=(0, 0, 0, 0, 0, 0x1000000000000)))

	# Version number out of range.
	badvalue(lambda: uuid.UUID('00'*16, version=0))
	badvalue(lambda: uuid.UUID('00'*16, version=6))

	# Integer value out of range.
	badvalue(lambda: uuid.UUID(int=-1))
	badvalue(lambda: uuid.UUID(int=1<<128))

	# Must supply exactly one of hex, bytes, fields, int.
	h, b, f, i = '00'16, b'\0'16, (0, 0, 0, 0, 0, 0), 0
	uuid.UUID(h)
	uuid.UUID(hex=h)
	uuid.UUID(bytes=b)
	uuid.UUID(bytes_le=b)
	uuid.UUID(fields=f)
	uuid.UUID(int=i)

	# Wrong number of arguments (positional).
	badtype(lambda: uuid.UUID())
	badtype(lambda: uuid.UUID(h, b))
	badtype(lambda: uuid.UUID(h, b, b))
	badtype(lambda: uuid.UUID(h, b, b, f))
	badtype(lambda: uuid.UUID(h, b, b, f, i))

	# Duplicate arguments.
	for hh in [[], [('hex', h)]]:
	for bb in [[], [('bytes', b)]]:
	for bble in [[], [('bytes_le', b)]]:
	for ii in [[], [('int', i)]]:
	for ff in [[], [('fields', f)]]:
	args = dict(hh + bb + bble + ii + ff)
	if len(args) != 0:
	badtype(lambda: uuid.UUID(h, **args))
	if len(args) != 1:
	badtype(lambda: uuid.UUID(**args))

	# Immutability.
	u = uuid.UUID(h)
	badtype(lambda: setattr(u, 'hex', h))
	badtype(lambda: setattr(u, 'bytes', b))
	badtype(lambda: setattr(u, 'bytes_le', b))
	badtype(lambda: setattr(u, 'fields', f))
	badtype(lambda: setattr(u, 'int', i))
	badtype(lambda: setattr(u, 'time_low', 0))
	badtype(lambda: setattr(u, 'time_mid', 0))
	badtype(lambda: setattr(u, 'time_hi_version', 0))
	badtype(lambda: setattr(u, 'time_hi_version', 0))
	badtype(lambda: setattr(u, 'clock_seq_hi_variant', 0))
	badtype(lambda: setattr(u, 'clock_seq_low', 0))
	badtype(lambda: setattr(u, 'node', 0))

	def check_node(self, node, source):
	message = "%012x is not an RFC 4122 node ID" % node
	self.assertTrue(0 < node, message)
	self.assertTrue(node < (1 << 48), message)

	TestUUID.source2node[source] = node
	if TestUUID.last_node:
	if TestUUID.last_node != node:
	msg = "different sources disagree on node:\n"
	for s, n in TestUUID.source2node.items():
	msg += " from source %r, node was %012x\n" % (s, n)
	# There's actually no reason to expect the MAC addresses
	# to agree across various methods -- e.g., a box may have
	# multiple network interfaces, and different ways of getting
	# a MAC address may favor different HW.
	##self.fail(msg)
	else:
	TestUUID.last_node = node

	def test_ifconfig_getnode(self):
	import sys
	import os
	if os.name == 'posix':
	node = uuid._ifconfig_getnode()
	if node is not None:
	self.check_node(node, 'ifconfig')

	def test_ipconfig_getnode(self):
	import os
	if os.name == 'nt':
	node = uuid._ipconfig_getnode()
	if node is not None:
	self.check_node(node, 'ipconfig')

	def test_netbios_getnode(self):
	if importable('win32wnet') and importable('netbios'):
	self.check_node(uuid._netbios_getnode(), 'netbios')

	def test_random_getnode(self):
	node = uuid._random_getnode()
	# Least significant bit of first octet must be set.
	self.assertTrue(node & 0x010000000000)
	self.assertTrue(node < (1 << 48))

	def test_unixdll_getnode(self):
	import sys
	import os
	if importable('ctypes') and os.name == 'posix':
	try: # Issues 1481, 3581: _uuid_generate_time() might be None.
	self.check_node(uuid._unixdll_getnode(), 'unixdll')
	except TypeError:
	pass

	def test_windll_getnode(self):
	import os
	if importable('ctypes') and os.name == 'nt':
	self.check_node(uuid._windll_getnode(), 'windll')

	def test_getnode(self):
	import sys
	node1 = uuid.getnode()
	self.check_node(node1, "getnode1")

	# Test it again to ensure consistency.
	node2 = uuid.getnode()
	self.check_node(node2, "getnode2")

	self.assertEqual(node1, node2)

	def test_uuid1(self):
	# uuid1 requires ctypes.
	try:
	import ctypes
	except ImportError:
	return

	equal = self.assertEqual

	# Make sure uuid1() generates UUIDs that are actually version 1.
	for u in [uuid.uuid1() for i in range(10)]:
	equal(u.variant, uuid.RFC_4122)
	equal(u.version, 1)

	# Make sure the generated UUIDs are actually unique.
	uuids = {}
	for u in [uuid.uuid1() for i in range(1000)]:
	uuids[u] = 1
	equal(len(uuids.keys()), 1000)

	# Make sure the supplied node ID appears in the UUID.
	u = uuid.uuid1(0)
	equal(u.node, 0)
	u = uuid.uuid1(0x123456789abc)
	equal(u.node, 0x123456789abc)
	u = uuid.uuid1(0xffffffffffff)
	equal(u.node, 0xffffffffffff)

	# Make sure the supplied clock sequence appears in the UUID.
	u = uuid.uuid1(0x123456789abc, 0)
	equal(u.node, 0x123456789abc)
	equal(((u.clock_seq_hi_variant & 0x3f) << 8) \| u.clock_seq_low, 0)
	u = uuid.uuid1(0x123456789abc, 0x1234)
	equal(u.node, 0x123456789abc)
	equal(((u.clock_seq_hi_variant & 0x3f) << 8) \|
	u.clock_seq_low, 0x1234)
	u = uuid.uuid1(0x123456789abc, 0x3fff)
	equal(u.node, 0x123456789abc)
	equal(((u.clock_seq_hi_variant & 0x3f) << 8) \|
	u.clock_seq_low, 0x3fff)

	def test_uuid3(self):
	equal = self.assertEqual

	# Test some known version-3 UUIDs.
	for u, v in [(uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org'),
	'6fa459ea-ee8a-3ca4-894e-db77e160355e'),
	(uuid.uuid3(uuid.NAMESPACE_URL, 'http://python.org/'),
	'9fe8e8c4-aaa8-32a9-a55c-4535a88b748d'),
	(uuid.uuid3(uuid.NAMESPACE_OID, '1.3.6.1'),
	'dd1a1cef-13d5-368a-ad82-eca71acd4cd1'),
	(uuid.uuid3(uuid.NAMESPACE_X500, 'c=ca'),
	'658d3002-db6b-3040-a1d1-8ddd7d189a4d'),
	]:
	equal(u.variant, uuid.RFC_4122)
	equal(u.version, 3)
	equal(u, uuid.UUID(v))
	equal(str(u), v)

	def test_uuid4(self):
	# uuid4 requires ctypes.
	try:
	import ctypes
	except ImportError:
	return

	equal = self.assertEqual

	# Make sure uuid4() generates UUIDs that are actually version 4.
	for u in [uuid.uuid4() for i in range(10)]:
	equal(u.variant, uuid.RFC_4122)
	equal(u.version, 4)

	# Make sure the generated UUIDs are actually unique.
	uuids = {}
	for u in [uuid.uuid4() for i in range(1000)]:
	uuids[u] = 1
	equal(len(uuids.keys()), 1000)

	def test_uuid5(self):
	equal = self.assertEqual

	# Test some known version-5 UUIDs.
	for u, v in [(uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org'),
	'886313e1-3b8a-5372-9b90-0c9aee199e5d'),
	(uuid.uuid5(uuid.NAMESPACE_URL, 'http://python.org/'),
	'4c565f0d-3f5a-5890-b41b-20cf47701c5e'),
	(uuid.uuid5(uuid.NAMESPACE_OID, '1.3.6.1'),
	'1447fa61-5277-5fef-a9b3-fbc6e44f4af3'),
	(uuid.uuid5(uuid.NAMESPACE_X500, 'c=ca'),
	'cc957dd1-a972-5349-98cd-874190002798'),
	]:
	equal(u.variant, uuid.RFC_4122)
	equal(u.version, 5)
	equal(u, uuid.UUID(v))
	equal(str(u), v)

	def testIssue8621(self):
	import os
	import sys
	if os.name != 'posix':
	return

	# On at least some versions of OSX uuid.uuid4 generates
	# the same sequence of UUIDs in the parent and any
	# children started using fork.
	fds = os.pipe()
	pid = os.fork()
	if pid == 0:
	os.close(fds[0])
	value = uuid.uuid4()
	os.write(fds[1], value.hex.encode('latin-1'))
	os._exit(0)

	else:
	os.close(fds[1])
	parent_value = uuid.uuid4().hex
	os.waitpid(pid, 0)
	child_value = os.read(fds[0], 100).decode('latin-1')

	self.assertNotEqual(parent_value, child_value)





	def test_main():
	support.run_unittest(TestUUID)

	if __name__ == '__main__':
	test_main()