text: # Copyright 2007 Google Inc.
  #  Licensed to PSF under a Contributor Agreement.
  
  """Unittest for ipaddress module."""
  
  
  import unittest
  import re
  import contextlib
  import functools
  import operator
  import pickle
  import ipaddress
  import weakref
  from test.support import LARGEST, SMALLEST
  
  
  class BaseTestCase(unittest.TestCase):
      # One big change in ipaddress over the original ipaddr module is
      # error reporting that tries to assume users *don't know the rules*
      # for what constitutes an RFC compliant IP address
  
      # Ensuring these errors are emitted correctly in all relevant cases
      # meant moving to a more systematic test structure that allows the
      # test structure to map more directly to the module structure
  
      # Note that if the constructors are refactored so that addresses with
      # multiple problems get classified differently, that's OK - just
      # move the affected examples to the newly appropriate test case.
  
      # There is some duplication between the original relatively ad hoc
      # test suite and the new systematic tests. While some redundancy in
      # testing is considered preferable to accidentally deleting a valid
      # test, the original test suite will likely be reduced over time as
      # redundant tests are identified.
  
      @property
      def factory(self):
          raise NotImplementedError
  
      @contextlib.contextmanager
      def assertCleanError(self, exc_type, details, *args):
          """
          Ensure exception does not display a context by default
  
          Wraps unittest.TestCase.assertRaisesRegex
          """
          if args:
              details = details % args
          cm = self.assertRaisesRegex(exc_type, details)
          with cm as exc:
              yield exc
          # Ensure we produce clean tracebacks on failure
          if exc.exception.__context__ is not None:
              self.assertTrue(exc.exception.__suppress_context__)
  
      def assertAddressError(self, details, *args):
          """Ensure a clean AddressValueError"""
          return self.assertCleanError(ipaddress.AddressValueError,
                                       details, *args)
  
      def assertNetmaskError(self, details, *args):
          """Ensure a clean NetmaskValueError"""
          return self.assertCleanError(ipaddress.NetmaskValueError,
                                       details, *args)
  
      def assertInstancesEqual(self, lhs, rhs):
          """Check constructor arguments produce equivalent instances"""
          self.assertEqual(self.factory(lhs), self.factory(rhs))
  
  
  class CommonTestMixin:
  
      def test_empty_address(self):
          with self.assertAddressError("Address cannot be empty"):
              self.factory("")
  
      def test_floats_rejected(self):
          with self.assertAddressError(re.escape(repr("1.0"))):
              self.factory(1.0)
  
      def test_not_an_index_issue15559(self):
          # Implementing __index__ makes for a very nasty interaction with the
          # bytes constructor. Thus, we disallow implicit use as an integer
          self.assertRaises(TypeError, operator.index, self.factory(1))
          self.assertRaises(TypeError, hex, self.factory(1))
          self.assertRaises(TypeError, bytes, self.factory(1))
  
      def pickle_test(self, addr):
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              with self.subTest(proto=proto):
                  x = self.factory(addr)
                  y = pickle.loads(pickle.dumps(x, proto))
                  self.assertEqual(y, x)
  
  
  class CommonTestMixin_v4(CommonTestMixin):
  
      def test_leading_zeros(self):
          self.assertInstancesEqual("000.000.000.000", "0.0.0.0")
          self.assertInstancesEqual("192.168.000.001", "192.168.0.1")
          self.assertInstancesEqual("016.016.016.016", "16.16.16.16")
          self.assertInstancesEqual("001.000.008.016", "1.0.8.16")
  
      def test_int(self):
          self.assertInstancesEqual(0, "0.0.0.0")
          self.assertInstancesEqual(3232235521, "192.168.0.1")
  
      def test_packed(self):
          self.assertInstancesEqual(bytes.fromhex("00000000"), "0.0.0.0")
          self.assertInstancesEqual(bytes.fromhex("c0a80001"), "192.168.0.1")
  
      def test_negative_ints_rejected(self):
          msg = "-1 (< 0) is not permitted as an IPv4 address"
          with self.assertAddressError(re.escape(msg)):
              self.factory(-1)
  
      def test_large_ints_rejected(self):
          msg = "%d (>= 2**32) is not permitted as an IPv4 address"
          with self.assertAddressError(re.escape(msg % 2**32)):
              self.factory(2**32)
  
      def test_bad_packed_length(self):
          def assertBadLength(length):
              addr = b'\0' * length
              msg = "%r (len %d != 4) is not permitted as an IPv4 address"
              with self.assertAddressError(re.escape(msg % (addr, length))):
                  self.factory(addr)
  
          assertBadLength(3)
          assertBadLength(5)
  
  
  class CommonTestMixin_v6(CommonTestMixin):
  
      def test_leading_zeros(self):
          self.assertInstancesEqual("0000::0000", "::")
          self.assertInstancesEqual("000::c0a8:0001", "::c0a8:1")
  
      def test_int(self):
          self.assertInstancesEqual(0, "::")
          self.assertInstancesEqual(3232235521, "::c0a8:1")
  
      def test_packed(self):
          addr = b'\0'*12 + bytes.fromhex("00000000")
          self.assertInstancesEqual(addr, "::")
          addr = b'\0'*12 + bytes.fromhex("c0a80001")
          self.assertInstancesEqual(addr, "::c0a8:1")
          addr = bytes.fromhex("c0a80001") + b'\0'*12
          self.assertInstancesEqual(addr, "c0a8:1::")
  
      def test_negative_ints_rejected(self):
          msg = "-1 (< 0) is not permitted as an IPv6 address"
          with self.assertAddressError(re.escape(msg)):
              self.factory(-1)
  
      def test_large_ints_rejected(self):
          msg = "%d (>= 2**128) is not permitted as an IPv6 address"
          with self.assertAddressError(re.escape(msg % 2**128)):
              self.factory(2**128)
  
      def test_bad_packed_length(self):
          def assertBadLength(length):
              addr = b'\0' * length
              msg = "%r (len %d != 16) is not permitted as an IPv6 address"
              with self.assertAddressError(re.escape(msg % (addr, length))):
                  self.factory(addr)
                  self.factory(addr)
  
          assertBadLength(15)
          assertBadLength(17)
  
  
  class AddressTestCase_v4(BaseTestCase, CommonTestMixin_v4):
      factory = ipaddress.IPv4Address
  
      def test_network_passed_as_address(self):
          addr = "127.0.0.1/24"
          with self.assertAddressError("Unexpected '/' in %r", addr):
              ipaddress.IPv4Address(addr)
  
      def test_bad_address_split(self):
          def assertBadSplit(addr):
              with self.assertAddressError("Expected 4 octets in %r", addr):
                  ipaddress.IPv4Address(addr)
  
          assertBadSplit("127.0.1")
          assertBadSplit("42.42.42.42.42")
          assertBadSplit("42.42.42")
          assertBadSplit("42.42")
          assertBadSplit("42")
          assertBadSplit("42..42.42.42")
          assertBadSplit("42.42.42.42.")
          assertBadSplit("42.42.42.42...")
          assertBadSplit(".42.42.42.42")
          assertBadSplit("...42.42.42.42")
          assertBadSplit("016.016.016")
          assertBadSplit("016.016")
          assertBadSplit("016")
          assertBadSplit("000")
          assertBadSplit("0x0a.0x0a.0x0a")
          assertBadSplit("0x0a.0x0a")
          assertBadSplit("0x0a")
          assertBadSplit(".")
          assertBadSplit("bogus")
          assertBadSplit("bogus.com")
          assertBadSplit("1000")
          assertBadSplit("1000000000000000")
          assertBadSplit("192.168.0.1.com")
  
      def test_empty_octet(self):
          def assertBadOctet(addr):
              with self.assertAddressError("Empty octet not permitted in %r",
                                           addr):
                  ipaddress.IPv4Address(addr)
  
          assertBadOctet("42..42.42")
          assertBadOctet("...")
  
      def test_invalid_characters(self):
          def assertBadOctet(addr, octet):
              msg = "Only decimal digits permitted in %r in %r" % (octet, addr)
              with self.assertAddressError(re.escape(msg)):
                  ipaddress.IPv4Address(addr)
  
          assertBadOctet("0x0a.0x0a.0x0a.0x0a", "0x0a")
          assertBadOctet("0xa.0x0a.0x0a.0x0a", "0xa")
          assertBadOctet("42.42.42.-0", "-0")
          assertBadOctet("42.42.42.+0", "+0")
          assertBadOctet("42.42.42.-42", "-42")
          assertBadOctet("+1.+2.+3.4", "+1")
          assertBadOctet("1.2.3.4e0", "4e0")
          assertBadOctet("1.2.3.4::", "4::")
          assertBadOctet("1.a.2.3", "a")
  
      def test_octet_length(self):
          def assertBadOctet(addr, octet):
              msg = "At most 3 characters permitted in %r in %r"
              with self.assertAddressError(re.escape(msg % (octet, addr))):
                  ipaddress.IPv4Address(addr)
  
          assertBadOctet("0000.000.000.000", "0000")
          assertBadOctet("12345.67899.-54321.-98765", "12345")
  
      def test_octet_limit(self):
          def assertBadOctet(addr, octet):
              msg = "Octet %d (> 255) not permitted in %r" % (octet, addr)
              with self.assertAddressError(re.escape(msg)):
                  ipaddress.IPv4Address(addr)
  
          assertBadOctet("257.0.0.0", 257)
          assertBadOctet("192.168.0.999", 999)
  
      def test_pickle(self):
          self.pickle_test('192.0.2.1')
  
      def test_weakref(self):
          weakref.ref(self.factory('192.0.2.1'))
  
  
  class AddressTestCase_v6(BaseTestCase, CommonTestMixin_v6):
      factory = ipaddress.IPv6Address
  
      def test_network_passed_as_address(self):
          addr = "::1/24"
          with self.assertAddressError("Unexpected '/' in %r", addr):
              ipaddress.IPv6Address(addr)
  
      def test_bad_address_split_v6_not_enough_parts(self):
          def assertBadSplit(addr):
              msg = "At least 3 parts expected in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit(":")
          assertBadSplit(":1")
          assertBadSplit("FEDC:9878")
  
      def test_bad_address_split_v6_too_many_colons(self):
          def assertBadSplit(addr):
              msg = "At most 8 colons permitted in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit("9:8:7:6:5:4:3::2:1")
          assertBadSplit("10:9:8:7:6:5:4:3:2:1")
          assertBadSplit("::8:7:6:5:4:3:2:1")
          assertBadSplit("8:7:6:5:4:3:2:1::")
          # A trailing IPv4 address is two parts
          assertBadSplit("10:9:8:7:6:5:4:3:42.42.42.42")
  
      def test_bad_address_split_v6_too_many_parts(self):
          def assertBadSplit(addr):
              msg = "Exactly 8 parts expected without '::' in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit("3ffe:0:0:0:0:0:0:0:1")
          assertBadSplit("9:8:7:6:5:4:3:2:1")
          assertBadSplit("7:6:5:4:3:2:1")
          # A trailing IPv4 address is two parts
          assertBadSplit("9:8:7:6:5:4:3:42.42.42.42")
          assertBadSplit("7:6:5:4:3:42.42.42.42")
  
      def test_bad_address_split_v6_too_many_parts_with_double_colon(self):
          def assertBadSplit(addr):
              msg = "Expected at most 7 other parts with '::' in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit("1:2:3:4::5:6:7:8")
  
      def test_bad_address_split_v6_repeated_double_colon(self):
          def assertBadSplit(addr):
              msg = "At most one '::' permitted in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit("3ffe::1::1")
          assertBadSplit("1::2::3::4:5")
          assertBadSplit("2001::db:::1")
          assertBadSplit("3ffe::1::")
          assertBadSplit("::3ffe::1")
          assertBadSplit(":3ffe::1::1")
          assertBadSplit("3ffe::1::1:")
          assertBadSplit(":3ffe::1::1:")
          assertBadSplit(":::")
          assertBadSplit('2001:db8:::1')
  
      def test_bad_address_split_v6_leading_colon(self):
          def assertBadSplit(addr):
              msg = "Leading ':' only permitted as part of '::' in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit(":2001:db8::1")
          assertBadSplit(":1:2:3:4:5:6:7")
          assertBadSplit(":1:2:3:4:5:6:")
          assertBadSplit(":6:5:4:3:2:1::")
  
      def test_bad_address_split_v6_trailing_colon(self):
          def assertBadSplit(addr):
              msg = "Trailing ':' only permitted as part of '::' in %r"
              with self.assertAddressError(msg, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadSplit("2001:db8::1:")
          assertBadSplit("1:2:3:4:5:6:7:")
          assertBadSplit("::1.2.3.4:")
          assertBadSplit("::7:6:5:4:3:2:")
  
      def test_bad_v4_part_in(self):
          def assertBadAddressPart(addr, v4_error):
              with self.assertAddressError("%s in %r", v4_error, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadAddressPart("3ffe::1.net", "Expected 4 octets in '1.net'")
          assertBadAddressPart("3ffe::127.0.1",
                               "Expected 4 octets in '127.0.1'")
          assertBadAddressPart("::1.2.3",
                               "Expected 4 octets in '1.2.3'")
          assertBadAddressPart("::1.2.3.4.5",
                               "Expected 4 octets in '1.2.3.4.5'")
          assertBadAddressPart("3ffe::1.1.1.net",
                               "Only decimal digits permitted in 'net' "
                               "in '1.1.1.net'")
  
      def test_invalid_characters(self):
          def assertBadPart(addr, part):
              msg = "Only hex digits permitted in %r in %r" % (part, addr)
              with self.assertAddressError(re.escape(msg)):
                  ipaddress.IPv6Address(addr)
  
          assertBadPart("3ffe::goog", "goog")
          assertBadPart("3ffe::-0", "-0")
          assertBadPart("3ffe::+0", "+0")
          assertBadPart("3ffe::-1", "-1")
          assertBadPart("1.2.3.4::", "1.2.3.4")
          assertBadPart('1234:axy::b', "axy")
  
      def test_part_length(self):
          def assertBadPart(addr, part):
              msg = "At most 4 characters permitted in %r in %r"
              with self.assertAddressError(msg, part, addr):
                  ipaddress.IPv6Address(addr)
  
          assertBadPart("::00000", "00000")
          assertBadPart("3ffe::10000", "10000")
          assertBadPart("02001:db8::", "02001")
          assertBadPart('2001:888888::1', "888888")
  
      def test_pickle(self):
          self.pickle_test('2001:db8::')
  
      def test_weakref(self):
          weakref.ref(self.factory('2001:db8::'))
  
  
  class NetmaskTestMixin_v4(CommonTestMixin_v4):
      """Input validation on interfaces and networks is very similar"""
  
      def test_no_mask(self):
          for address in ('1.2.3.4', 0x01020304, b'\x01\x02\x03\x04'):
              net = self.factory(address)
              self.assertEqual(str(net), '1.2.3.4/32')
              self.assertEqual(str(net.netmask), '255.255.255.255')
              self.assertEqual(str(net.hostmask), '0.0.0.0')
              # IPv4Network has prefixlen, but IPv4Interface doesn't.
              # Should we add it to IPv4Interface too? (bpo-36392)
  
      def test_split_netmask(self):
          addr = "1.2.3.4/32/24"
          with self.assertAddressError("Only one '/' permitted in %r" % addr):
              self.factory(addr)
  
      def test_address_errors(self):
          def assertBadAddress(addr, details):
              with self.assertAddressError(details):
                  self.factory(addr)
  
          assertBadAddress("/", "Address cannot be empty")
          assertBadAddress("/8", "Address cannot be empty")
          assertBadAddress("bogus", "Expected 4 octets")
          assertBadAddress("google.com", "Expected 4 octets")
          assertBadAddress("10/8", "Expected 4 octets")
          assertBadAddress("::1.2.3.4", "Only decimal digits")
          assertBadAddress("1.2.3.256", re.escape("256 (> 255)"))
  
      def test_valid_netmask(self):
          self.assertEqual(str(self.factory('192.0.2.0/255.255.255.0')),
                           '192.0.2.0/24')
          for i in range(0, 33):
              # Generate and re-parse the CIDR format (trivial).
              net_str = '0.0.0.0/%d' % i
              net = self.factory(net_str)
              self.assertEqual(str(net), net_str)
              # Generate and re-parse the expanded netmask.
              self.assertEqual(
                  str(self.factory('0.0.0.0/%s' % net.netmask)), net_str)
              # Zero prefix is treated as decimal.
              self.assertEqual(str(self.factory('0.0.0.0/0%d' % i)), net_str)
              # Generate and re-parse the expanded hostmask.  The ambiguous
              # cases (/0 and /32) are treated as netmasks.
              if i in (32, 0):
                  net_str = '0.0.0.0/%d' % (32 - i)
              self.assertEqual(
                  str(self.factory('0.0.0.0/%s' % net.hostmask)), net_str)
  
      def test_netmask_errors(self):
          def assertBadNetmask(addr, netmask):
              msg = "%r is not a valid netmask" % netmask
              with self.assertNetmaskError(re.escape(msg)):
                  self.factory("%s/%s" % (addr, netmask))
  
          assertBadNetmask("1.2.3.4", "")
          assertBadNetmask("1.2.3.4", "-1")
          assertBadNetmask("1.2.3.4", "+1")
          assertBadNetmask("1.2.3.4", " 1 ")
          assertBadNetmask("1.2.3.4", "0x1")
          assertBadNetmask("1.2.3.4", "33")
          assertBadNetmask("1.2.3.4", "254.254.255.256")
          assertBadNetmask("1.2.3.4", "1.a.2.3")
          assertBadNetmask("1.1.1.1", "254.xyz.2.3")
          assertBadNetmask("1.1.1.1", "240.255.0.0")
          assertBadNetmask("1.1.1.1", "255.254.128.0")
          assertBadNetmask("1.1.1.1", "0.1.127.255")
          assertBadNetmask("1.1.1.1", "pudding")
          assertBadNetmask("1.1.1.1", "::")
  
      def test_netmask_in_tuple_errors(self):
          def assertBadNetmask(addr, netmask):
              msg = "%r is not a valid netmask" % netmask
              with self.assertNetmaskError(re.escape(msg)):
                  self.factory((addr, netmask))
          assertBadNetmask("1.1.1.1", -1)
          assertBadNetmask("1.1.1.1", 33)
  
      def test_pickle(self):
          self.pickle_test('192.0.2.0/27')
          self.pickle_test('192.0.2.0/31')  # IPV4LENGTH - 1
          self.pickle_test('192.0.2.0')     # IPV4LENGTH
  
  
  class InterfaceTestCase_v4(BaseTestCase, NetmaskTestMixin_v4):
      factory = ipaddress.IPv4Interface
  
  
  class NetworkTestCase_v4(BaseTestCase, NetmaskTestMixin_v4):
      factory = ipaddress.IPv4Network
  
      def test_subnet_of(self):
          # containee left of container
          self.assertFalse(
              self.factory('10.0.0.0/30').subnet_of(
                  self.factory('10.0.1.0/24')))
          # containee inside container
          self.assertTrue(
              self.factory('10.0.0.0/30').subnet_of(
                  self.factory('10.0.0.0/24')))
          # containee right of container
          self.assertFalse(
              self.factory('10.0.0.0/30').subnet_of(
                  self.factory('10.0.1.0/24')))
          # containee larger than container
          self.assertFalse(
              self.factory('10.0.1.0/24').subnet_of(
                  self.factory('10.0.0.0/30')))
  
      def test_supernet_of(self):
          # containee left of container
          self.assertFalse(
              self.factory('10.0.0.0/30').supernet_of(
                  self.factory('10.0.1.0/24')))
          # containee inside container
          self.assertFalse(
              self.factory('10.0.0.0/30').supernet_of(
                  self.factory('10.0.0.0/24')))
          # containee right of container
          self.assertFalse(
              self.factory('10.0.0.0/30').supernet_of(
                  self.factory('10.0.1.0/24')))
          # containee larger than container
          self.assertTrue(
              self.factory('10.0.0.0/24').supernet_of(
                  self.factory('10.0.0.0/30')))
  
      def test_subnet_of_mixed_types(self):
          with self.assertRaises(TypeError):
              ipaddress.IPv4Network('10.0.0.0/30').supernet_of(
                  ipaddress.IPv6Network('::1/128'))
          with self.assertRaises(TypeError):
              ipaddress.IPv6Network('::1/128').supernet_of(
                  ipaddress.IPv4Network('10.0.0.0/30'))
          with self.assertRaises(TypeError):
              ipaddress.IPv4Network('10.0.0.0/30').subnet_of(
                  ipaddress.IPv6Network('::1/128'))
          with self.assertRaises(TypeError):
              ipaddress.IPv6Network('::1/128').subnet_of(
                  ipaddress.IPv4Network('10.0.0.0/30'))
  
  
  class NetmaskTestMixin_v6(CommonTestMixin_v6):
      """Input validation on interfaces and networks is very similar"""
  
      def test_no_mask(self):
          for address in ('::1', 1, b'\x00'*15 + b'\x01'):
              net = self.factory(address)
              self.assertEqual(str(net), '::1/128')
              self.assertEqual(str(net.netmask), 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff')
              self.assertEqual(str(net.hostmask), '::')
              # IPv6Network has prefixlen, but IPv6Interface doesn't.
              # Should we add it to IPv4Interface too? (bpo-36392)
  
      def test_split_netmask(self):
          addr = "cafe:cafe::/128/190"
          with self.assertAddressError("Only one '/' permitted in %r" % addr):
              self.factory(addr)
  
      def test_address_errors(self):
          def assertBadAddress(addr, details):
              with self.assertAddressError(details):
                  self.factory(addr)
  
          assertBadAddress("/", "Address cannot be empty")
          assertBadAddress("/8", "Address cannot be empty")
          assertBadAddress("google.com", "At least 3 parts")
          assertBadAddress("1.2.3.4", "At least 3 parts")
          assertBadAddress("10/8", "At least 3 parts")
          assertBadAddress("1234:axy::b", "Only hex digits")
  
      def test_valid_netmask(self):
          # We only support CIDR for IPv6, because expanded netmasks are not
          # standard notation.
          self.assertEqual(str(self.factory('2001:db8::/32')), '2001:db8::/32')
          for i in range(0, 129):
              # Generate and re-parse the CIDR format (trivial).
              net_str = '::/%d' % i
              self.assertEqual(str(self.factory(net_str)), net_str)
              # Zero prefix is treated as decimal.
              self.assertEqual(str(self.factory('::/0%d' % i)), net_str)
  
      def test_netmask_errors(self):
          def assertBadNetmask(addr, netmask):
              msg = "%r is not a valid netmask" % netmask
              with self.assertNetmaskError(re.escape(msg)):
                  self.factory("%s/%s" % (addr, netmask))
  
          assertBadNetmask("::1", "")
          assertBadNetmask("::1", "::1")
          assertBadNetmask("::1", "1::")
          assertBadNetmask("::1", "-1")
          assertBadNetmask("::1", "+1")
          assertBadNetmask("::1", " 1 ")
          assertBadNetmask("::1", "0x1")
          assertBadNetmask("::1", "129")
          assertBadNetmask("::1", "1.2.3.4")
          assertBadNetmask("::1", "pudding")
          assertBadNetmask("::", "::")
  
      def test_netmask_in_tuple_errors(self):
          def assertBadNetmask(addr, netmask):
              msg = "%r is not a valid netmask" % netmask
              with self.assertNetmaskError(re.escape(msg)):
                  self.factory((addr, netmask))
          assertBadNetmask("::1", -1)
          assertBadNetmask("::1", 129)
  
      def test_pickle(self):
          self.pickle_test('2001:db8::1000/124')
          self.pickle_test('2001:db8::1000/127')  # IPV6LENGTH - 1
          self.pickle_test('2001:db8::1000')      # IPV6LENGTH
  
  
  class InterfaceTestCase_v6(BaseTestCase, NetmaskTestMixin_v6):
      factory = ipaddress.IPv6Interface
  
  
  class NetworkTestCase_v6(BaseTestCase, NetmaskTestMixin_v6):
      factory = ipaddress.IPv6Network
  
      def test_subnet_of(self):
          # containee left of container
          self.assertFalse(
              self.factory('2000:999::/56').subnet_of(
                  self.factory('2000:aaa::/48')))
          # containee inside container
          self.assertTrue(
              self.factory('2000:aaa::/56').subnet_of(
                  self.factory('2000:aaa::/48')))
          # containee right of container
          self.assertFalse(
              self.factory('2000:bbb::/56').subnet_of(
                  self.factory('2000:aaa::/48')))
          # containee larger than container
          self.assertFalse(
              self.factory('2000:aaa::/48').subnet_of(
                  self.factory('2000:aaa::/56')))
  
      def test_supernet_of(self):
          # containee left of container
          self.assertFalse(
              self.factory('2000:999::/56').supernet_of(
                  self.factory('2000:aaa::/48')))
          # containee inside container
          self.assertFalse(
              self.factory('2000:aaa::/56').supernet_of(
                  self.factory('2000:aaa::/48')))
          # containee right of container
          self.assertFalse(
              self.factory('2000:bbb::/56').supernet_of(
                  self.factory('2000:aaa::/48')))
          # containee larger than container
          self.assertTrue(
              self.factory('2000:aaa::/48').supernet_of(
                  self.factory('2000:aaa::/56')))
  
  
  class FactoryFunctionErrors(BaseTestCase):
  
      def assertFactoryError(self, factory, kind):
          """Ensure a clean ValueError with the expected message"""
          addr = "camelot"
          msg = '%r does not appear to be an IPv4 or IPv6 %s'
          with self.assertCleanError(ValueError, msg, addr, kind):
              factory(addr)
  
      def test_ip_address(self):
          self.assertFactoryError(ipaddress.ip_address, "address")
  
      def test_ip_interface(self):
          self.assertFactoryError(ipaddress.ip_interface, "interface")
  
      def test_ip_network(self):
          self.assertFactoryError(ipaddress.ip_network, "network")
  
  
  class ComparisonTests(unittest.TestCase):
  
      v4addr = ipaddress.IPv4Address(1)
      v4net = ipaddress.IPv4Network(1)
      v4intf = ipaddress.IPv4Interface(1)
      v6addr = ipaddress.IPv6Address(1)
      v6net = ipaddress.IPv6Network(1)
      v6intf = ipaddress.IPv6Interface(1)
  
      v4_addresses = [v4addr, v4intf]
      v4_objects = v4_addresses + [v4net]
      v6_addresses = [v6addr, v6intf]
      v6_objects = v6_addresses + [v6net]
  
      objects = v4_objects + v6_objects
  
      v4addr2 = ipaddress.IPv4Address(2)
      v4net2 = ipaddress.IPv4Network(2)
      v4intf2 = ipaddress.IPv4Interface(2)
      v6addr2 = ipaddress.IPv6Address(2)
      v6net2 = ipaddress.IPv6Network(2)
      v6intf2 = ipaddress.IPv6Interface(2)
  
      def test_foreign_type_equality(self):
          # __eq__ should never raise TypeError directly
          other = object()
          for obj in self.objects:
              self.assertNotEqual(obj, other)
              self.assertFalse(obj == other)
              self.assertEqual(obj.__eq__(other), NotImplemented)
              self.assertEqual(obj.__ne__(other), NotImplemented)
  
      def test_mixed_type_equality(self):
          # Ensure none of the internal objects accidentally
          # expose the right set of attributes to become "equal"
          for lhs in self.objects:
              for rhs in self.objects:
                  if lhs is rhs:
                      continue
                  self.assertNotEqual(lhs, rhs)
  
      def test_same_type_equality(self):
          for obj in self.objects:
              self.assertEqual(obj, obj)
              self.assertLessEqual(obj, obj)
              self.assertGreaterEqual(obj, obj)
  
      def test_same_type_ordering(self):
          for lhs, rhs in (
              (self.v4addr, self.v4addr2),
              (self.v4net, self.v4net2),
              (self.v4intf, self.v4intf2),
              (self.v6addr, self.v6addr2),
              (self.v6net, self.v6net2),
              (self.v6intf, self.v6intf2),
          ):
              self.assertNotEqual(lhs, rhs)
              self.assertLess(lhs, rhs)
              self.assertLessEqual(lhs, rhs)
              self.assertGreater(rhs, lhs)
              self.assertGreaterEqual(rhs, lhs)
              self.assertFalse(lhs > rhs)
              self.assertFalse(rhs < lhs)
              self.assertFalse(lhs >= rhs)
              self.assertFalse(rhs <= lhs)
  
      def test_containment(self):
          for obj in self.v4_addresses:
              self.assertIn(obj, self.v4net)
          for obj in self.v6_addresses:
              self.assertIn(obj, self.v6net)
          for obj in self.v4_objects + [self.v6net]:
              self.assertNotIn(obj, self.v6net)
          for obj in self.v6_objects + [self.v4net]:
              self.assertNotIn(obj, self.v4net)
  
      def test_mixed_type_ordering(self):
          for lhs in self.objects:
              for rhs in self.objects:
                  if isinstance(lhs, type(rhs)) or isinstance(rhs, type(lhs)):
                      continue
                  self.assertRaises(TypeError, lambda: lhs < rhs)
                  self.assertRaises(TypeError, lambda: lhs > rhs)
                  self.assertRaises(TypeError, lambda: lhs <= rhs)
                  self.assertRaises(TypeError, lambda: lhs >= rhs)
  
      def test_foreign_type_ordering(self):
          other = object()
          for obj in self.objects:
              with self.assertRaises(TypeError):
                  obj < other
              with self.assertRaises(TypeError):
                  obj > other
              with self.assertRaises(TypeError):
                  obj <= other
              with self.assertRaises(TypeError):
                  obj >= other
              self.assertTrue(obj < LARGEST)
              self.assertFalse(obj > LARGEST)
              self.assertTrue(obj <= LARGEST)
              self.assertFalse(obj >= LARGEST)
              self.assertFalse(obj < SMALLEST)
              self.assertTrue(obj > SMALLEST)
              self.assertFalse(obj <= SMALLEST)
              self.assertTrue(obj >= SMALLEST)
  
      def test_mixed_type_key(self):
          # with get_mixed_type_key, you can sort addresses and network.
          v4_ordered = [self.v4addr, self.v4net, self.v4intf]
          v6_ordered = [self.v6addr, self.v6net, self.v6intf]
          self.assertEqual(v4_ordered,
                           sorted(self.v4_objects,
                                  key=ipaddress.get_mixed_type_key))
          self.assertEqual(v6_ordered,
                           sorted(self.v6_objects,
                                  key=ipaddress.get_mixed_type_key))
          self.assertEqual(v4_ordered + v6_ordered,
                           sorted(self.objects,
                                  key=ipaddress.get_mixed_type_key))
          self.assertEqual(NotImplemented, ipaddress.get_mixed_type_key(object))
  
      def test_incompatible_versions(self):
          # These should always raise TypeError
          v4addr = ipaddress.ip_address('1.1.1.1')
          v4net = ipaddress.ip_network('1.1.1.1')
          v6addr = ipaddress.ip_address('::1')
          v6net = ipaddress.ip_network('::1')
  
          self.assertRaises(TypeError, v4addr.__lt__, v6addr)
          self.assertRaises(TypeError, v4addr.__gt__, v6addr)
          self.assertRaises(TypeError, v4net.__lt__, v6net)
          self.assertRaises(TypeError, v4net.__gt__, v6net)
  
          self.assertRaises(TypeError, v6addr.__lt__, v4addr)
          self.assertRaises(TypeError, v6addr.__gt__, v4addr)
          self.assertRaises(TypeError, v6net.__lt__, v4net)
          self.assertRaises(TypeError, v6net.__gt__, v4net)
  
  
  class IpaddrUnitTest(unittest.TestCase):
  
      def setUp(self):
          self.ipv4_address = ipaddress.IPv4Address('1.2.3.4')
          self.ipv4_interface = ipaddress.IPv4Interface('1.2.3.4/24')
          self.ipv4_network = ipaddress.IPv4Network('1.2.3.0/24')
          #self.ipv4_hostmask = ipaddress.IPv4Interface('10.0.0.1/0.255.255.255')
          self.ipv6_address = ipaddress.IPv6Interface(
              '2001:658:22a:cafe:200:0:0:1')
          self.ipv6_interface = ipaddress.IPv6Interface(
              '2001:658:22a:cafe:200:0:0:1/64')
          self.ipv6_network = ipaddress.IPv6Network('2001:658:22a:cafe::/64')
  
      def testRepr(self):
          self.assertEqual("IPv4Interface('1.2.3.4/32')",
                           repr(ipaddress.IPv4Interface('1.2.3.4')))
          self.assertEqual("IPv6Interface('::1/128')",
                           repr(ipaddress.IPv6Interface('::1')))
  
      # issue #16531: constructing IPv4Network from an (address, mask) tuple
      def testIPv4Tuple(self):
          # /32
          ip = ipaddress.IPv4Address('192.0.2.1')
          net = ipaddress.IPv4Network('192.0.2.1/32')
          self.assertEqual(ipaddress.IPv4Network(('192.0.2.1', 32)), net)
          self.assertEqual(ipaddress.IPv4Network((ip, 32)), net)
          self.assertEqual(ipaddress.IPv4Network((3221225985, 32)), net)
          self.assertEqual(ipaddress.IPv4Network(('192.0.2.1',
                                                  '255.255.255.255')), net)
          self.assertEqual(ipaddress.IPv4Network((ip,
                                                  '255.255.255.255')), net)
          self.assertEqual(ipaddress.IPv4Network((3221225985,
                                                  '255.255.255.255')), net)
          # strict=True and host bits set
          with self.assertRaises(ValueError):
              ipaddress.IPv4Network(('192.0.2.1', 24))
          with self.assertRaises(ValueError):
              ipaddress.IPv4Network((ip, 24))
          with self.assertRaises(ValueError):
              ipaddress.IPv4Network((3221225985, 24))
          with self.assertRaises(ValueError):
              ipaddress.IPv4Network(('192.0.2.1', '255.255.255.0'))
          with self.assertRaises(ValueError):
              ipaddress.IPv4Network((ip, '255.255.255.0'))
          with self.assertRaises(ValueError):
              ipaddress.IPv4Network((3221225985, '255.255.255.0'))
          # strict=False and host bits set
          net = ipaddress.IPv4Network('192.0.2.0/24')
          self.assertEqual(ipaddress.IPv4Network(('192.0.2.1', 24),
                                                 strict=False), net)
          self.assertEqual(ipaddress.IPv4Network((ip, 24),
                                                 strict=False), net)
          self.assertEqual(ipaddress.IPv4Network((3221225985, 24),
                                                 strict=False), net)
          self.assertEqual(ipaddress.IPv4Network(('192.0.2.1',
                                                  '255.255.255.0'),
                                                 strict=False), net)
          self.assertEqual(ipaddress.IPv4Network((ip,
                                                  '255.255.255.0'),
                                                 strict=False), net)
          self.assertEqual(ipaddress.IPv4Network((3221225985,
                                                  '255.255.255.0'),
                                                 strict=False), net)
  
          # /24
          ip = ipaddress.IPv4Address('192.0.2.0')
          net = ipaddress.IPv4Network('192.0.2.0/24')
          self.assertEqual(ipaddress.IPv4Network(('192.0.2.0',
                                                  '255.255.255.0')), net)
          self.assertEqual(ipaddress.IPv4Network((ip,
                                                  '255.255.255.0')), net)
          self.assertEqual(ipaddress.IPv4Network((3221225984,
                                                  '255.255.255.0')), net)
          self.assertEqual(ipaddress.IPv4Network(('192.0.2.0', 24)), net)
          self.assertEqual(ipaddress.IPv4Network((ip, 24)), net)
          self.assertEqual(ipaddress.IPv4Network((3221225984, 24)), net)
  
          self.assertEqual(ipaddress.IPv4Interface(('192.0.2.1', 24)),
                           ipaddress.IPv4Interface('192.0.2.1/24'))
          self.assertEqual(ipaddress.IPv4Interface((3221225985, 24)),
                           ipaddress.IPv4Interface('192.0.2.1/24'))
  
      # issue #16531: constructing IPv6Network from an (address, mask) tuple
      def testIPv6Tuple(self):
          # /128
          ip = ipaddress.IPv6Address('2001:db8::')
          net = ipaddress.IPv6Network('2001:db8::/128')
          self.assertEqual(ipaddress.IPv6Network(('2001:db8::', '128')),
                           net)
          self.assertEqual(ipaddress.IPv6Network(
                  (42540766411282592856903984951653826560, 128)),
                           net)
          self.assertEqual(ipaddress.IPv6Network((ip, '128')),
                           net)
          ip = ipaddress.IPv6Address('2001:db8::')
          net = ipaddress.IPv6Network('2001:db8::/96')
          self.assertEqual(ipaddress.IPv6Network(('2001:db8::', '96')),
                           net)
          self.assertEqual(ipaddress.IPv6Network(
                  (42540766411282592856903984951653826560, 96)),
                           net)
          self.assertEqual(ipaddress.IPv6Network((ip, '96')),
                           net)
  
          # strict=True and host bits set
          ip = ipaddress.IPv6Address('2001:db8::1')
          with self.assertRaises(ValueError):
              ipaddress.IPv6Network(('2001:db8::1', 96))
          with self.assertRaises(ValueError):
              ipaddress.IPv6Network((
                  42540766411282592856903984951653826561, 96))
          with self.assertRaises(ValueError):
              ipaddress.IPv6Network((ip, 96))
          # strict=False and host bits set
          net = ipaddress.IPv6Network('2001:db8::/96')
          self.assertEqual(ipaddress.IPv6Network(('2001:db8::1', 96),
                                                 strict=False),
                           net)
          self.assertEqual(ipaddress.IPv6Network(
                               (42540766411282592856903984951653826561, 96),
                               strict=False),
                           net)
          self.assertEqual(ipaddress.IPv6Network((ip, 96), strict=False),
                           net)
  
          # /96
          self.assertEqual(ipaddress.IPv6Interface(('2001:db8::1', '96')),
                           ipaddress.IPv6Interface('2001:db8::1/96'))
          self.assertEqual(ipaddress.IPv6Interface(
                  (42540766411282592856903984951653826561, '96')),
                           ipaddress.IPv6Interface('2001:db8::1/96'))
  
      # issue57
      def testAddressIntMath(self):
          self.assertEqual(ipaddress.IPv4Address('1.1.1.1') + 255,
                           ipaddress.IPv4Address('1.1.2.0'))
          self.assertEqual(ipaddress.IPv4Address('1.1.1.1') - 256,
                           ipaddress.IPv4Address('1.1.0.1'))
          self.assertEqual(ipaddress.IPv6Address('::1') + (2**16 - 2),
                           ipaddress.IPv6Address('::ffff'))
          self.assertEqual(ipaddress.IPv6Address('::ffff') - (2**16 - 2),
                           ipaddress.IPv6Address('::1'))
  
      def testInvalidIntToBytes(self):
          self.assertRaises(ValueError, ipaddress.v4_int_to_packed, -1)
          self.assertRaises(ValueError, ipaddress.v4_int_to_packed,
                            2 ** ipaddress.IPV4LENGTH)
          self.assertRaises(ValueError, ipaddress.v6_int_to_packed, -1)
          self.assertRaises(ValueError, ipaddress.v6_int_to_packed,
                            2 ** ipaddress.IPV6LENGTH)
  
      def testInternals(self):
          ip1 = ipaddress.IPv4Address('10.10.10.10')
          ip2 = ipaddress.IPv4Address('10.10.10.11')
          ip3 = ipaddress.IPv4Address('10.10.10.12')
          self.assertEqual(list(ipaddress._find_address_range([ip1])),
                           [(ip1, ip1)])
          self.assertEqual(list(ipaddress._find_address_range([ip1, ip3])),
                           [(ip1, ip1), (ip3, ip3)])
          self.assertEqual(list(ipaddress._find_address_range([ip1, ip2, ip3])),
                           [(ip1, ip3)])
          self.assertEqual(128, ipaddress._count_righthand_zero_bits(0, 128))
          self.assertEqual("IPv4Network('1.2.3.0/24')", repr(self.ipv4_network))
  
      def testGetNetwork(self):
          self.assertEqual(int(self.ipv4_network.network_address), 16909056)
          self.assertEqual(str(self.ipv4_network.network_address), '1.2.3.0')
  
          self.assertEqual(int(self.ipv6_network.network_address),
                           42540616829182469433403647294022090752)
          self.assertEqual(str(self.ipv6_network.network_address),
                           '2001:658:22a:cafe::')
          self.assertEqual(str(self.ipv6_network.hostmask),
                           '::ffff:ffff:ffff:ffff')
  
      def testIpFromInt(self):
          self.assertEqual(self.ipv4_interface._ip,
                           ipaddress.IPv4Interface(16909060)._ip)
  
          ipv4 = ipaddress.ip_network('1.2.3.4')
          ipv6 = ipaddress.ip_network('2001:658:22a:cafe:200:0:0:1')
          self.assertEqual(ipv4, ipaddress.ip_network(int(ipv4.network_address)))
          self.assertEqual(ipv6, ipaddress.ip_network(int(ipv6.network_address)))
  
          v6_int = 42540616829182469433547762482097946625
          self.assertEqual(self.ipv6_interface._ip,
                           ipaddress.IPv6Interface(v6_int)._ip)
  
          self.assertEqual(ipaddress.ip_network(self.ipv4_address._ip).version,
                           4)
          self.assertEqual(ipaddress.ip_network(self.ipv6_address._ip).version,
                           6)
  
      def testIpFromPacked(self):
          address = ipaddress.ip_address
          self.assertEqual(self.ipv4_interface._ip,
                           ipaddress.ip_interface(b'\x01\x02\x03\x04')._ip)
          self.assertEqual(address('255.254.253.252'),
                           address(b'\xff\xfe\xfd\xfc'))
          self.assertEqual(self.ipv6_interface.ip,
                           ipaddress.ip_interface(
                      b'\x20\x01\x06\x58\x02\x2a\xca\xfe'
                      b'\x02\x00\x00\x00\x00\x00\x00\x01').ip)
          self.assertEqual(address('ffff:2:3:4:ffff::'),
                           address(b'\xff\xff\x00\x02\x00\x03\x00\x04' +
                              b'\xff\xff' + b'\x00' * 6))
          self.assertEqual(address('::'),
                           address(b'\x00' * 16))
  
      def testGetIp(self):
          self.assertEqual(int(self.ipv4_interface.ip), 16909060)
          self.assertEqual(str(self.ipv4_interface.ip), '1.2.3.4')
  
          self.assertEqual(int(self.ipv6_interface.ip),
                           42540616829182469433547762482097946625)
          self.assertEqual(str(self.ipv6_interface.ip),
                           '2001:658:22a:cafe:200::1')
  
      def testGetNetmask(self):
          self.assertEqual(int(self.ipv4_network.netmask), 4294967040)
          self.assertEqual(str(self.ipv4_network.netmask), '255.255.255.0')
          self.assertEqual(int(self.ipv6_network.netmask),
                           340282366920938463444927863358058659840)
          self.assertEqual(self.ipv6_network.prefixlen, 64)
  
      def testZeroNetmask(self):
          ipv4_zero_netmask = ipaddress.IPv4Interface('1.2.3.4/0')
          self.assertEqual(int(ipv4_zero_netmask.network.netmask), 0)
          self.assertEqual(ipv4_zero_netmask._prefix_from_prefix_string('0'), 0)
  
          ipv6_zero_netmask = ipaddress.IPv6Interface('::1/0')
          self.assertEqual(int(ipv6_zero_netmask.network.netmask), 0)
          self.assertEqual(ipv6_zero_netmask._prefix_from_prefix_string('0'), 0)
  
      def testIPv4Net(self):
          net = ipaddress.IPv4Network('127.0.0.0/0.0.0.255')
          self.assertEqual(net.prefixlen, 24)
  
      def testGetBroadcast(self):
          self.assertEqual(int(self.ipv4_network.broadcast_address), 16909311)
          self.assertEqual(str(self.ipv4_network.broadcast_address), '1.2.3.255')
  
          self.assertEqual(int(self.ipv6_network.broadcast_address),
                           42540616829182469451850391367731642367)
          self.assertEqual(str(self.ipv6_network.broadcast_address),
                           '2001:658:22a:cafe:ffff:ffff:ffff:ffff')
  
      def testGetPrefixlen(self):
          self.assertEqual(self.ipv4_interface.network.prefixlen, 24)
          self.assertEqual(self.ipv6_interface.network.prefixlen, 64)
  
      def testGetSupernet(self):
          self.assertEqual(self.ipv4_network.supernet().prefixlen, 23)
          self.assertEqual(str(self.ipv4_network.supernet().network_address),
                           '1.2.2.0')
          self.assertEqual(
              ipaddress.IPv4Interface('0.0.0.0/0').network.supernet(),
              ipaddress.IPv4Network('0.0.0.0/0'))
  
          self.assertEqual(self.ipv6_network.supernet().prefixlen, 63)
          self.assertEqual(str(self.ipv6_network.supernet().network_address),
                           '2001:658:22a:cafe::')
          self.assertEqual(ipaddress.IPv6Interface('::0/0').network.supernet(),
                           ipaddress.IPv6Network('::0/0'))
  
      def testGetSupernet3(self):
          self.assertEqual(self.ipv4_network.supernet(3).prefixlen, 21)
          self.assertEqual(str(self.ipv4_network.supernet(3).network_address),
                           '1.2.0.0')
  
          self.assertEqual(self.ipv6_network.supernet(3).prefixlen, 61)
          self.assertEqual(str(self.ipv6_network.supernet(3).network_address),
                           '2001:658:22a:caf8::')
  
      def testGetSupernet4(self):
          self.assertRaises(ValueError, self.ipv4_network.supernet,
                            prefixlen_diff=2, new_prefix=1)
          self.assertRaises(ValueError, self.ipv4_network.supernet,
                            new_prefix=25)
          self.assertEqual(self.ipv4_network.supernet(prefixlen_diff=2),
                           self.ipv4_network.supernet(new_prefix=22))
  
          self.assertRaises(ValueError, self.ipv6_network.supernet,
                            prefixlen_diff=2, new_prefix=1)
          self.assertRaises(ValueError, self.ipv6_network.supernet,
                            new_prefix=65)
          self.assertEqual(self.ipv6_network.supernet(prefixlen_diff=2),
                           self.ipv6_network.supernet(new_prefix=62))
  
      def testHosts(self):
          hosts = list(self.ipv4_network.hosts())
          self.assertEqual(254, len(hosts))
          self.assertEqual(ipaddress.IPv4Address('1.2.3.1'), hosts[0])
          self.assertEqual(ipaddress.IPv4Address('1.2.3.254'), hosts[-1])
  
          ipv6_network = ipaddress.IPv6Network('2001:658:22a:cafe::/120')
          hosts = list(ipv6_network.hosts())
          self.assertEqual(255, len(hosts))
          self.assertEqual(ipaddress.IPv6Address('2001:658:22a:cafe::1'), hosts[0])
          self.assertEqual(ipaddress.IPv6Address('2001:658:22a:cafe::ff'), hosts[-1])
  
          # special case where only 1 bit is left for address
          addrs = [ipaddress.IPv4Address('2.0.0.0'),
                   ipaddress.IPv4Address('2.0.0.1')]
          str_args = '2.0.0.0/31'
          tpl_args = ('2.0.0.0', 31)
          self.assertEqual(addrs, list(ipaddress.ip_network(str_args).hosts()))
          self.assertEqual(addrs, list(ipaddress.ip_network(tpl_args).hosts()))
          self.assertEqual(list(ipaddress.ip_network(str_args).hosts()),
                           list(ipaddress.ip_network(tpl_args).hosts()))
  
          addrs = [ipaddress.IPv6Address('2001:658:22a:cafe::'),
                   ipaddress.IPv6Address('2001:658:22a:cafe::1')]
          str_args = '2001:658:22a:cafe::/127'
          tpl_args = ('2001:658:22a:cafe::', 127)
          self.assertEqual(addrs, list(ipaddress.ip_network(str_args).hosts()))
          self.assertEqual(addrs, list(ipaddress.ip_network(tpl_args).hosts()))
          self.assertEqual(list(ipaddress.ip_network(str_args).hosts()),
                           list(ipaddress.ip_network(tpl_args).hosts()))
  
      def testFancySubnetting(self):
          self.assertEqual(sorted(self.ipv4_network.subnets(prefixlen_diff=3)),
                           sorted(self.ipv4_network.subnets(new_prefix=27)))
          self.assertRaises(ValueError, list,
                            self.ipv4_network.subnets(new_prefix=23))
          self.assertRaises(ValueError, list,
                            self.ipv4_network.subnets(prefixlen_diff=3,
                                                     new_prefix=27))
          self.assertEqual(sorted(self.ipv6_network.subnets(prefixlen_diff=4)),
                           sorted(self.ipv6_network.subnets(new_prefix=68)))
          self.assertRaises(ValueError, list,
                            self.ipv6_network.subnets(new_prefix=63))
          self.assertRaises(ValueError, list,
                            self.ipv6_network.subnets(prefixlen_diff=4,
                                                     new_prefix=68))
  
      def testGetSubnets(self):
          self.assertEqual(list(self.ipv4_network.subnets())[0].prefixlen, 25)
          self.assertEqual(str(list(
                      self.ipv4_network.subnets())[0].network_address),
                           '1.2.3.0')
          self.assertEqual(str(list(
                      self.ipv4_network.subnets())[1].network_address),
                           '1.2.3.128')
  
          self.assertEqual(list(self.ipv6_network.subnets())[0].prefixlen, 65)
  
      def testGetSubnetForSingle32(self):
          ip = ipaddress.IPv4Network('1.2.3.4/32')
          subnets1 = [str(x) for x in ip.subnets()]
          subnets2 = [str(x) for x in ip.subnets(2)]
          self.assertEqual(subnets1, ['1.2.3.4/32'])
          self.assertEqual(subnets1, subnets2)
  
      def testGetSubnetForSingle128(self):
          ip = ipaddress.IPv6Network('::1/128')
          subnets1 = [str(x) for x in ip.subnets()]
          subnets2 = [str(x) for x in ip.subnets(2)]
          self.assertEqual(subnets1, ['::1/128'])
          self.assertEqual(subnets1, subnets2)
  
      def testSubnet2(self):
          ips = [str(x) for x in self.ipv4_network.subnets(2)]
          self.assertEqual(
              ips,
              ['1.2.3.0/26', '1.2.3.64/26', '1.2.3.128/26', '1.2.3.192/26'])
  
          ipsv6 = [str(x) for x in self.ipv6_network.subnets(2)]
          self.assertEqual(
              ipsv6,
              ['2001:658:22a:cafe::/66',
               '2001:658:22a:cafe:4000::/66',
               '2001:658:22a:cafe:8000::/66',
               '2001:658:22a:cafe:c000::/66'])
  
      def testGetSubnets3(self):
          subnets = [str(x) for x in self.ipv4_network.subnets(8)]
          self.assertEqual(subnets[:3],
              ['1.2.3.0/32', '1.2.3.1/32', '1.2.3.2/32'])
          self.assertEqual(subnets[-3:],
              ['1.2.3.253/32', '1.2.3.254/32', '1.2.3.255/32'])
          self.assertEqual(len(subnets), 256)
  
          ipv6_network = ipaddress.IPv6Network('2001:658:22a:cafe::/120')
          subnets = [str(x) for x in ipv6_network.subnets(8)]
          self.assertEqual(subnets[:3],
              ['2001:658:22a:cafe::/128',
               '2001:658:22a:cafe::1/128',
               '2001:658:22a:cafe::2/128'])
          self.assertEqual(subnets[-3:],
              ['2001:658:22a:cafe::fd/128',
               '2001:658:22a:cafe::fe/128',
               '2001:658:22a:cafe::ff/128'])
          self.assertEqual(len(subnets), 256)
  
      def testSubnetFailsForLargeCidrDiff(self):
          self.assertRaises(ValueError, list,
                            self.ipv4_interface.network.subnets(9))
          self.assertRaises(ValueError, list,
                            self.ipv4_network.subnets(9))
          self.assertRaises(ValueError, list,
                            self.ipv6_interface.network.subnets(65))
          self.assertRaises(ValueError, list,
                            self.ipv6_network.subnets(65))
  
      def testSupernetFailsForLargeCidrDiff(self):
          self.assertRaises(ValueError,
                            self.ipv4_interface.network.supernet, 25)
          self.assertRaises(ValueError,
                            self.ipv6_interface.network.supernet, 65)
  
      def testSubnetFailsForNegativeCidrDiff(self):
          self.assertRaises(ValueError, list,
                            self.ipv4_interface.network.subnets(-1))
          self.assertRaises(ValueError, list,
                            self.ipv4_network.subnets(-1))
          self.assertRaises(ValueError, list,
                            self.ipv6_interface.network.subnets(-1))
          self.assertRaises(ValueError, list,
                            self.ipv6_network.subnets(-1))
  
      def testGetNum_Addresses(self):
          self.assertEqual(self.ipv4_network.num_addresses, 256)
          self.assertEqual(list(self.ipv4_network.subnets())[0].num_addresses,
                           128)
          self.assertEqual(self.ipv4_network.supernet().num_addresses, 512)
  
          self.assertEqual(self.ipv6_network.num_addresses, 18446744073709551616)
          self.assertEqual(list(self.ipv6_network.subnets())[0].num_addresses,
                           9223372036854775808)
          self.assertEqual(self.ipv6_network.supernet().num_addresses,
                           36893488147419103232)
  
      def testContains(self):
          self.assertIn(ipaddress.IPv4Interface('1.2.3.128/25'),
                        self.ipv4_network)
          self.assertNotIn(ipaddress.IPv4Interface('1.2.4.1/24'),
                           self.ipv4_network)
          # We can test addresses and string as well.
          addr1 = ipaddress.IPv4Address('1.2.3.37')
          self.assertIn(addr1, self.ipv4_network)
          # issue 61, bad network comparison on like-ip'd network objects
          # with identical broadcast addresses.
          self.assertFalse(ipaddress.IPv4Network('1.1.0.0/16').__contains__(
                  ipaddress.IPv4Network('1.0.0.0/15')))
  
      def testNth(self):
          self.assertEqual(str(self.ipv4_network[5]), '1.2.3.5')
          self.assertRaises(IndexError, self.ipv4_network.__getitem__, 256)
  
          self.assertEqual(str(self.ipv6_network[5]),
                           '2001:658:22a:cafe::5')
          self.assertRaises(IndexError, self.ipv6_network.__getitem__, 1 << 64)
  
      def testGetitem(self):
          # http://code.google.com/p/ipaddr-py/issues/detail?id=15
          addr = ipaddress.IPv4Network('172.31.255.128/255.255.255.240')
          self.assertEqual(28, addr.prefixlen)
          addr_list = list(addr)
          self.assertEqual('172.31.255.128', str(addr_list[0]))
          self.assertEqual('172.31.255.128', str(addr[0]))
          self.assertEqual('172.31.255.143', str(addr_list[-1]))
          self.assertEqual('172.31.255.143', str(addr[-1]))
          self.assertEqual(addr_list[-1], addr[-1])
  
      def testEqual(self):
          self.assertTrue(self.ipv4_interface ==
                          ipaddress.IPv4Interface('1.2.3.4/24'))
          self.assertFalse(self.ipv4_interface ==
                           ipaddress.IPv4Interface('1.2.3.4/23'))
          self.assertFalse(self.ipv4_interface ==
                           ipaddress.IPv6Interface('::1.2.3.4/24'))
          self.assertFalse(self.ipv4_interface == '')
          self.assertFalse(self.ipv4_interface == [])
          self.assertFalse(self.ipv4_interface == 2)
  
          self.assertTrue(self.ipv6_interface ==
              ipaddress.IPv6Interface('2001:658:22a:cafe:200::1/64'))
          self.assertFalse(self.ipv6_interface ==
              ipaddress.IPv6Interface('2001:658:22a:cafe:200::1/63'))
          self.assertFalse(self.ipv6_interface ==
                           ipaddress.IPv4Interface('1.2.3.4/23'))
          self.assertFalse(self.ipv6_interface == '')
          self.assertFalse(self.ipv6_interface == [])
          self.assertFalse(self.ipv6_interface == 2)
  
      def testNotEqual(self):
          self.assertFalse(self.ipv4_interface !=
                           ipaddress.IPv4Interface('1.2.3.4/24'))
          self.assertTrue(self.ipv4_interface !=
                          ipaddress.IPv4Interface('1.2.3.4/23'))
          self.assertTrue(self.ipv4_interface !=
                          ipaddress.IPv6Interface('::1.2.3.4/24'))
          self.assertTrue(self.ipv4_interface != '')
          self.assertTrue(self.ipv4_interface != [])
          self.assertTrue(self.ipv4_interface != 2)
  
          self.assertTrue(self.ipv4_address !=
                           ipaddress.IPv4Address('1.2.3.5'))
          self.assertTrue(self.ipv4_address != '')
          self.assertTrue(self.ipv4_address != [])
          self.assertTrue(self.ipv4_address != 2)
  
          self.assertFalse(self.ipv6_interface !=
              ipaddress.IPv6Interface('2001:658:22a:cafe:200::1/64'))
          self.assertTrue(self.ipv6_interface !=
              ipaddress.IPv6Interface('2001:658:22a:cafe:200::1/63'))
          self.assertTrue(self.ipv6_interface !=
                          ipaddress.IPv4Interface('1.2.3.4/23'))
          self.assertTrue(self.ipv6_interface != '')
          self.assertTrue(self.ipv6_interface != [])
          self.assertTrue(self.ipv6_interface != 2)
  
          self.assertTrue(self.ipv6_address !=
                          ipaddress.IPv4Address('1.2.3.4'))
          self.assertTrue(self.ipv6_address != '')
          self.assertTrue(self.ipv6_address != [])
          self.assertTrue(self.ipv6_address != 2)
  
      def testSlash32Constructor(self):
          self.assertEqual(str(ipaddress.IPv4Interface(
                      '1.2.3.4/255.255.255.255')), '1.2.3.4/32')
  
      def testSlash128Constructor(self):
          self.assertEqual(str(ipaddress.IPv6Interface('::1/128')),
                                    '::1/128')
  
      def testSlash0Constructor(self):
          self.assertEqual(str(ipaddress.IPv4Interface('1.2.3.4/0.0.0.0')),
                            '1.2.3.4/0')
  
      def testCollapsing(self):
          # test only IP addresses including some duplicates
          ip1 = ipaddress.IPv4Address('1.1.1.0')
          ip2 = ipaddress.IPv4Address('1.1.1.1')
          ip3 = ipaddress.IPv4Address('1.1.1.2')
          ip4 = ipaddress.IPv4Address('1.1.1.3')
          ip5 = ipaddress.IPv4Address('1.1.1.4')
          ip6 = ipaddress.IPv4Address('1.1.1.0')
          # check that addresses are subsumed properly.
          collapsed = ipaddress.collapse_addresses(
              [ip1, ip2, ip3, ip4, ip5, ip6])
          self.assertEqual(list(collapsed),
                  [ipaddress.IPv4Network('1.1.1.0/30'),
                   ipaddress.IPv4Network('1.1.1.4/32')])
  
          # test a mix of IP addresses and networks including some duplicates
          ip1 = ipaddress.IPv4Address('1.1.1.0')
          ip2 = ipaddress.IPv4Address('1.1.1.1')
          ip3 = ipaddress.IPv4Address('1.1.1.2')
          ip4 = ipaddress.IPv4Address('1.1.1.3')
          #ip5 = ipaddress.IPv4Interface('1.1.1.4/30')
          #ip6 = ipaddress.IPv4Interface('1.1.1.4/30')
          # check that addresses are subsumed properly.
          collapsed = ipaddress.collapse_addresses([ip1, ip2, ip3, ip4])
          self.assertEqual(list(collapsed),
                           [ipaddress.IPv4Network('1.1.1.0/30')])
  
          # test only IP networks
          ip1 = ipaddress.IPv4Network('1.1.0.0/24')
          ip2 = ipaddress.IPv4Network('1.1.1.0/24')
          ip3 = ipaddress.IPv4Network('1.1.2.0/24')
          ip4 = ipaddress.IPv4Network('1.1.3.0/24')
          ip5 = ipaddress.IPv4Network('1.1.4.0/24')
          # stored in no particular order b/c we want CollapseAddr to call
          # [].sort
          ip6 = ipaddress.IPv4Network('1.1.0.0/22')
          # check that addresses are subsumed properly.
          collapsed = ipaddress.collapse_addresses([ip1, ip2, ip3, ip4, ip5,
                                                       ip6])
          self.assertEqual(list(collapsed),
                           [ipaddress.IPv4Network('1.1.0.0/22'),
                            ipaddress.IPv4Network('1.1.4.0/24')])
  
          # test that two addresses are supernet'ed properly
          collapsed = ipaddress.collapse_addresses([ip1, ip2])
          self.assertEqual(list(collapsed),
                           [ipaddress.IPv4Network('1.1.0.0/23')])
  
          # test same IP networks
          ip_same1 = ip_same2 = ipaddress.IPv4Network('1.1.1.1/32')
          self.assertEqual(list(ipaddress.collapse_addresses(
                      [ip_same1, ip_same2])),
                           [ip_same1])
  
          # test same IP addresses
          ip_same1 = ip_same2 = ipaddress.IPv4Address('1.1.1.1')
          self.assertEqual(list(ipaddress.collapse_addresses(
                      [ip_same1, ip_same2])),
                           [ipaddress.ip_network('1.1.1.1/32')])
          ip1 = ipaddress.IPv6Network('2001::/100')
          ip2 = ipaddress.IPv6Network('2001::/120')
          ip3 = ipaddress.IPv6Network('2001::/96')
          # test that ipv6 addresses are subsumed properly.
          collapsed = ipaddress.collapse_addresses([ip1, ip2, ip3])
          self.assertEqual(list(collapsed), [ip3])
  
          # the toejam test
          addr_tuples = [
                  (ipaddress.ip_address('1.1.1.1'),
                   ipaddress.ip_address('::1')),
                  (ipaddress.IPv4Network('1.1.0.0/24'),
                   ipaddress.IPv6Network('2001::/120')),
                  (ipaddress.IPv4Network('1.1.0.0/32'),
                   ipaddress.IPv6Network('2001::/128')),
          ]
          for ip1, ip2 in addr_tuples:
              self.assertRaises(TypeError, ipaddress.collapse_addresses,
                                [ip1, ip2])
  
      def testSummarizing(self):
          #ip = ipaddress.ip_address
          #ipnet = ipaddress.ip_network
          summarize = ipaddress.summarize_address_range
          ip1 = ipaddress.ip_address('1.1.1.0')
          ip2 = ipaddress.ip_address('1.1.1.255')
  
          # summarize works only for IPv4 & IPv6
          class IPv7Address(ipaddress.IPv6Address):
              @property
              def version(self):
                  return 7
          ip_invalid1 = IPv7Address('::1')
          ip_invalid2 = IPv7Address('::1')
          self.assertRaises(ValueError, list,
                            summarize(ip_invalid1, ip_invalid2))
          # test that a summary over ip4 & ip6 fails
          self.assertRaises(TypeError, list,
                            summarize(ip1, ipaddress.IPv6Address('::1')))
          # test a /24 is summarized properly
          self.assertEqual(list(summarize(ip1, ip2))[0],
                           ipaddress.ip_network('1.1.1.0/24'))
          # test an IPv4 range that isn't on a network byte boundary
          ip2 = ipaddress.ip_address('1.1.1.8')
          self.assertEqual(list(summarize(ip1, ip2)),
                           [ipaddress.ip_network('1.1.1.0/29'),
                            ipaddress.ip_network('1.1.1.8')])
          # all!
          ip1 = ipaddress.IPv4Address(0)
          ip2 = ipaddress.IPv4Address(ipaddress.IPv4Address._ALL_ONES)
          self.assertEqual([ipaddress.IPv4Network('0.0.0.0/0')],
                           list(summarize(ip1, ip2)))
  
          ip1 = ipaddress.ip_address('1::')
          ip2 = ipaddress.ip_address('1:ffff:ffff:ffff:ffff:ffff:ffff:ffff')
          # test an IPv6 is summarized properly
          self.assertEqual(list(summarize(ip1, ip2))[0],
                           ipaddress.ip_network('1::/16'))
          # test an IPv6 range that isn't on a network byte boundary
          ip2 = ipaddress.ip_address('2::')
          self.assertEqual(list(summarize(ip1, ip2)),
                           [ipaddress.ip_network('1::/16'),
                            ipaddress.ip_network('2::/128')])
  
          # test exception raised when first is greater than last
          self.assertRaises(ValueError, list,
                            summarize(ipaddress.ip_address('1.1.1.0'),
                                      ipaddress.ip_address('1.1.0.0')))
          # test exception raised when first and last aren't IP addresses
          self.assertRaises(TypeError, list,
                            summarize(ipaddress.ip_network('1.1.1.0'),
                                      ipaddress.ip_network('1.1.0.0')))
          self.assertRaises(TypeError, list,
                            summarize(ipaddress.ip_network('1.1.1.0'),
                                      ipaddress.ip_network('1.1.0.0')))
          # test exception raised when first and last are not same version
          self.assertRaises(TypeError, list,
                            summarize(ipaddress.ip_address('::'),
                                      ipaddress.ip_network('1.1.0.0')))
  
      def testAddressComparison(self):
          self.assertTrue(ipaddress.ip_address('1.1.1.1') <=
                          ipaddress.ip_address('1.1.1.1'))
          self.assertTrue(ipaddress.ip_address('1.1.1.1') <=
                          ipaddress.ip_address('1.1.1.2'))
          self.assertTrue(ipaddress.ip_address('::1') <=
                          ipaddress.ip_address('::1'))
          self.assertTrue(ipaddress.ip_address('::1') <=
                          ipaddress.ip_address('::2'))
  
      def testInterfaceComparison(self):
          self.assertTrue(ipaddress.ip_interface('1.1.1.1/24') ==
                          ipaddress.ip_interface('1.1.1.1/24'))
          self.assertTrue(ipaddress.ip_interface('1.1.1.1/16') <
                          ipaddress.ip_interface('1.1.1.1/24'))
          self.assertTrue(ipaddress.ip_interface('1.1.1.1/24') <
                          ipaddress.ip_interface('1.1.1.2/24'))
          self.assertTrue(ipaddress.ip_interface('1.1.1.2/16') <
                          ipaddress.ip_interface('1.1.1.1/24'))
          self.assertTrue(ipaddress.ip_interface('1.1.1.1/24') >
                          ipaddress.ip_interface('1.1.1.1/16'))
          self.assertTrue(ipaddress.ip_interface('1.1.1.2/24') >
                          ipaddress.ip_interface('1.1.1.1/24'))
          self.assertTrue(ipaddress.ip_interface('1.1.1.1/24') >
                          ipaddress.ip_interface('1.1.1.2/16'))
  
          self.assertTrue(ipaddress.ip_interface('::1/64') ==
                          ipaddress.ip_interface('::1/64'))
          self.assertTrue(ipaddress.ip_interface('::1/64') <
                          ipaddress.ip_interface('::1/80'))
          self.assertTrue(ipaddress.ip_interface('::1/64') <
                          ipaddress.ip_interface('::2/64'))
          self.assertTrue(ipaddress.ip_interface('::2/48') <
                          ipaddress.ip_interface('::1/64'))
          self.assertTrue(ipaddress.ip_interface('::1/80') >
                          ipaddress.ip_interface('::1/64'))
          self.assertTrue(ipaddress.ip_interface('::2/64') >
                          ipaddress.ip_interface('::1/64'))
          self.assertTrue(ipaddress.ip_interface('::1/64') >
                          ipaddress.ip_interface('::2/48'))
  
      def testNetworkComparison(self):
          # ip1 and ip2 have the same network address
          ip1 = ipaddress.IPv4Network('1.1.1.0/24')
          ip2 = ipaddress.IPv4Network('1.1.1.0/32')
          ip3 = ipaddress.IPv4Network('1.1.2.0/24')
  
          self.assertTrue(ip1 < ip3)
          self.assertTrue(ip3 > ip2)
  
          self.assertEqual(ip1.compare_networks(ip1), 0)
  
          # if addresses are the same, sort by netmask
          self.assertEqual(ip1.compare_networks(ip2), -1)
          self.assertEqual(ip2.compare_networks(ip1), 1)
  
          self.assertEqual(ip1.compare_networks(ip3), -1)
          self.assertEqual(ip3.compare_networks(ip1), 1)
          self.assertTrue(ip1._get_networks_key() < ip3._get_networks_key())
  
          ip1 = ipaddress.IPv6Network('2001:2000::/96')
          ip2 = ipaddress.IPv6Network('2001:2001::/96')
          ip3 = ipaddress.IPv6Network('2001:ffff:2000::/96')
  
          self.assertTrue(ip1 < ip3)
          self.assertTrue(ip3 > ip2)
          self.assertEqual(ip1.compare_networks(ip3), -1)
          self.assertTrue(ip1._get_networks_key() < ip3._get_networks_key())
  
          # Test comparing different protocols.
          # Should always raise a TypeError.
          self.assertRaises(TypeError,
                            self.ipv4_network.compare_networks,
                            self.ipv6_network)
          ipv6 = ipaddress.IPv6Interface('::/0')
          ipv4 = ipaddress.IPv4Interface('0.0.0.0/0')
          self.assertRaises(TypeError, ipv4.__lt__, ipv6)
          self.assertRaises(TypeError, ipv4.__gt__, ipv6)
          self.assertRaises(TypeError, ipv6.__lt__, ipv4)
          self.assertRaises(TypeError, ipv6.__gt__, ipv4)
  
          # Regression test for issue 19.
          ip1 = ipaddress.ip_network('10.1.2.128/25')
          self.assertFalse(ip1 < ip1)
          self.assertFalse(ip1 > ip1)
          ip2 = ipaddress.ip_network('10.1.3.0/24')
          self.assertTrue(ip1 < ip2)
          self.assertFalse(ip2 < ip1)
          self.assertFalse(ip1 > ip2)
          self.assertTrue(ip2 > ip1)
          ip3 = ipaddress.ip_network('10.1.3.0/25')
          self.assertTrue(ip2 < ip3)
          self.assertFalse(ip3 < ip2)
          self.assertFalse(ip2 > ip3)
          self.assertTrue(ip3 > ip2)
  
          # Regression test for issue 28.
          ip1 = ipaddress.ip_network('10.10.10.0/31')
          ip2 = ipaddress.ip_network('10.10.10.0')
          ip3 = ipaddress.ip_network('10.10.10.2/31')
          ip4 = ipaddress.ip_network('10.10.10.2')
          sorted = [ip1, ip2, ip3, ip4]
          unsorted = [ip2, ip4, ip1, ip3]
          unsorted.sort()
          self.assertEqual(sorted, unsorted)
          unsorted = [ip4, ip1, ip3, ip2]
          unsorted.sort()
          self.assertEqual(sorted, unsorted)
          self.assertIs(ip1.__lt__(ipaddress.ip_address('10.10.10.0')),
                        NotImplemented)
          self.assertIs(ip2.__lt__(ipaddress.ip_address('10.10.10.0')),
                        NotImplemented)
  
          # <=, >=
          self.assertTrue(ipaddress.ip_network('1.1.1.1') <=
                          ipaddress.ip_network('1.1.1.1'))
          self.assertTrue(ipaddress.ip_network('1.1.1.1') <=
                          ipaddress.ip_network('1.1.1.2'))
          self.assertFalse(ipaddress.ip_network('1.1.1.2') <=
                          ipaddress.ip_network('1.1.1.1'))
          self.assertTrue(ipaddress.ip_network('::1') <=
                          ipaddress.ip_network('::1'))
          self.assertTrue(ipaddress.ip_network('::1') <=
                          ipaddress.ip_network('::2'))
          self.assertFalse(ipaddress.ip_network('::2') <=
                           ipaddress.ip_network('::1'))
  
      def testStrictNetworks(self):
          self.assertRaises(ValueError, ipaddress.ip_network, '192.168.1.1/24')
          self.assertRaises(ValueError, ipaddress.ip_network, '::1/120')
  
      def testOverlaps(self):
          other = ipaddress.IPv4Network('1.2.3.0/30')
          other2 = ipaddress.IPv4Network('1.2.2.0/24')
          other3 = ipaddress.IPv4Network('1.2.2.64/26')
          self.assertTrue(self.ipv4_network.overlaps(other))
          self.assertFalse(self.ipv4_network.overlaps(other2))
          self.assertTrue(other2.overlaps(other3))
  
      def testEmbeddedIpv4(self):
          ipv4_string = '192.168.0.1'
          ipv4 = ipaddress.IPv4Interface(ipv4_string)
          v4compat_ipv6 = ipaddress.IPv6Interface('::%s' % ipv4_string)
          self.assertEqual(int(v4compat_ipv6.ip), int(ipv4.ip))
          v4mapped_ipv6 = ipaddress.IPv6Interface('::ffff:%s' % ipv4_string)
          self.assertNotEqual(v4mapped_ipv6.ip, ipv4.ip)
          self.assertRaises(ipaddress.AddressValueError, ipaddress.IPv6Interface,
                            '2001:1.1.1.1:1.1.1.1')
  
      # Issue 67: IPv6 with embedded IPv4 address not recognized.
      def testIPv6AddressTooLarge(self):
          # RFC4291 2.5.5.2
          self.assertEqual(ipaddress.ip_address('::FFFF:192.0.2.1'),
                            ipaddress.ip_address('::FFFF:c000:201'))
          # RFC4291 2.2 (part 3) x::d.d.d.d
          self.assertEqual(ipaddress.ip_address('FFFF::192.0.2.1'),
                            ipaddress.ip_address('FFFF::c000:201'))
  
      def testIPVersion(self):
          self.assertEqual(self.ipv4_address.version, 4)
          self.assertEqual(self.ipv6_address.version, 6)
  
      def testMaxPrefixLength(self):
          self.assertEqual(self.ipv4_interface.max_prefixlen, 32)
          self.assertEqual(self.ipv6_interface.max_prefixlen, 128)
  
      def testPacked(self):
          self.assertEqual(self.ipv4_address.packed,
                           b'\x01\x02\x03\x04')
          self.assertEqual(ipaddress.IPv4Interface('255.254.253.252').packed,
                           b'\xff\xfe\xfd\xfc')
          self.assertEqual(self.ipv6_address.packed,
                           b'\x20\x01\x06\x58\x02\x2a\xca\xfe'
                           b'\x02\x00\x00\x00\x00\x00\x00\x01')
          self.assertEqual(ipaddress.IPv6Interface('ffff:2:3:4:ffff::').packed,
                           b'\xff\xff\x00\x02\x00\x03\x00\x04\xff\xff'
                              + b'\x00' * 6)
          self.assertEqual(ipaddress.IPv6Interface('::1:0:0:0:0').packed,
                           b'\x00' * 6 + b'\x00\x01' + b'\x00' * 8)
  
      def testIpType(self):
          ipv4net = ipaddress.ip_network('1.2.3.4')
          ipv4addr = ipaddress.ip_address('1.2.3.4')
          ipv6net = ipaddress.ip_network('::1.2.3.4')
          ipv6addr = ipaddress.ip_address('::1.2.3.4')
          self.assertEqual(ipaddress.IPv4Network, type(ipv4net))
          self.assertEqual(ipaddress.IPv4Address, type(ipv4addr))
          self.assertEqual(ipaddress.IPv6Network, type(ipv6net))
          self.assertEqual(ipaddress.IPv6Address, type(ipv6addr))
  
      def testReservedIpv4(self):
          # test networks
          self.assertEqual(True, ipaddress.ip_interface(
                  '224.1.1.1/31').is_multicast)
          self.assertEqual(False, ipaddress.ip_network('240.0.0.0').is_multicast)
          self.assertEqual(True, ipaddress.ip_network('240.0.0.0').is_reserved)
  
          self.assertEqual(True, ipaddress.ip_interface(
                  '192.168.1.1/17').is_private)
          self.assertEqual(False, ipaddress.ip_network('192.169.0.0').is_private)
          self.assertEqual(True, ipaddress.ip_network(
                  '10.255.255.255').is_private)
          self.assertEqual(False, ipaddress.ip_network('11.0.0.0').is_private)
          self.assertEqual(False, ipaddress.ip_network('11.0.0.0').is_reserved)
          self.assertEqual(True, ipaddress.ip_network(
                  '172.31.255.255').is_private)
          self.assertEqual(False, ipaddress.ip_network('172.32.0.0').is_private)
          self.assertEqual(True,
                           ipaddress.ip_network('169.254.1.0/24').is_link_local)
  
          self.assertEqual(True,
                            ipaddress.ip_interface(
                                '169.254.100.200/24').is_link_local)
          self.assertEqual(False,
                            ipaddress.ip_interface(
                                '169.255.100.200/24').is_link_local)
  
          self.assertEqual(True,
                            ipaddress.ip_network(
                                '127.100.200.254/32').is_loopback)
          self.assertEqual(True, ipaddress.ip_network(
                  '127.42.0.0/16').is_loopback)
          self.assertEqual(False, ipaddress.ip_network('128.0.0.0').is_loopback)
          self.assertEqual(False,
                           ipaddress.ip_network('100.64.0.0/10').is_private)
          self.assertEqual(False, ipaddress.ip_network('100.64.0.0/10').is_global)
  
          self.assertEqual(True,
                           ipaddress.ip_network('192.0.2.128/25').is_private)
          self.assertEqual(True,
                           ipaddress.ip_network('192.0.3.0/24').is_global)
  
          # test addresses
          self.assertEqual(True, ipaddress.ip_address('0.0.0.0').is_unspecified)
          self.assertEqual(True, ipaddress.ip_address('224.1.1.1').is_multicast)
          self.assertEqual(False, ipaddress.ip_address('240.0.0.0').is_multicast)
          self.assertEqual(True, ipaddress.ip_address('240.0.0.1').is_reserved)
          self.assertEqual(False,
                           ipaddress.ip_address('239.255.255.255').is_reserved)
  
          self.assertEqual(True, ipaddress.ip_address('192.168.1.1').is_private)
          self.assertEqual(False, ipaddress.ip_address('192.169.0.0').is_private)
          self.assertEqual(True, ipaddress.ip_address(
                  '10.255.255.255').is_private)
          self.assertEqual(False, ipaddress.ip_address('11.0.0.0').is_private)
          self.assertEqual(True, ipaddress.ip_address(
                  '172.31.255.255').is_private)
          self.assertEqual(False, ipaddress.ip_address('172.32.0.0').is_private)
  
          self.assertEqual(True,
                           ipaddress.ip_address('169.254.100.200').is_link_local)
          self.assertEqual(False,
                           ipaddress.ip_address('169.255.100.200').is_link_local)
  
          self.assertTrue(ipaddress.ip_address('192.0.7.1').is_global)
          self.assertFalse(ipaddress.ip_address('203.0.113.1').is_global)
  
          self.assertEqual(True,
                            ipaddress.ip_address('127.100.200.254').is_loopback)
          self.assertEqual(True, ipaddress.ip_address('127.42.0.0').is_loopback)
          self.assertEqual(False, ipaddress.ip_address('128.0.0.0').is_loopback)
          self.assertEqual(True, ipaddress.ip_network('0.0.0.0').is_unspecified)
  
      def testReservedIpv6(self):
  
          self.assertEqual(True, ipaddress.ip_network('ffff::').is_multicast)
          self.assertEqual(True, ipaddress.ip_network(2**128 - 1).is_multicast)
          self.assertEqual(True, ipaddress.ip_network('ff00::').is_multicast)
          self.assertEqual(False, ipaddress.ip_network('fdff::').is_multicast)
  
          self.assertEqual(True, ipaddress.ip_network('fecf::').is_site_local)
          self.assertEqual(True, ipaddress.ip_network(
                  'feff:ffff:ffff:ffff::').is_site_local)
          self.assertEqual(False, ipaddress.ip_network(
                  'fbf:ffff::').is_site_local)
          self.assertEqual(False, ipaddress.ip_network('ff00::').is_site_local)
  
          self.assertEqual(True, ipaddress.ip_network('fc00::').is_private)
          self.assertEqual(True, ipaddress.ip_network(
                  'fc00:ffff:ffff:ffff::').is_private)
          self.assertEqual(False, ipaddress.ip_network('fbff:ffff::').is_private)
          self.assertEqual(False, ipaddress.ip_network('fe00::').is_private)
  
          self.assertEqual(True, ipaddress.ip_network('fea0::').is_link_local)
          self.assertEqual(True, ipaddress.ip_network(
                  'febf:ffff::').is_link_local)
          self.assertEqual(False, ipaddress.ip_network(
                  'fe7f:ffff::').is_link_local)
          self.assertEqual(False, ipaddress.ip_network('fec0::').is_link_local)
  
          self.assertEqual(True, ipaddress.ip_interface('0:0::0:01').is_loopback)
          self.assertEqual(False, ipaddress.ip_interface('::1/127').is_loopback)
          self.assertEqual(False, ipaddress.ip_network('::').is_loopback)
          self.assertEqual(False, ipaddress.ip_network('::2').is_loopback)
  
          self.assertEqual(True, ipaddress.ip_network('0::0').is_unspecified)
          self.assertEqual(False, ipaddress.ip_network('::1').is_unspecified)
          self.assertEqual(False, ipaddress.ip_network('::/127').is_unspecified)
  
          self.assertEqual(True,
                           ipaddress.ip_network('2001::1/128').is_private)
          self.assertEqual(True,
                           ipaddress.ip_network('200::1/128').is_global)
          # test addresses
          self.assertEqual(True, ipaddress.ip_address('ffff::').is_multicast)
          self.assertEqual(True, ipaddress.ip_address(2**128 - 1).is_multicast)
          self.assertEqual(True, ipaddress.ip_address('ff00::').is_multicast)
          self.assertEqual(False, ipaddress.ip_address('fdff::').is_multicast)
  
          self.assertEqual(True, ipaddress.ip_address('fecf::').is_site_local)
          self.assertEqual(True, ipaddress.ip_address(
                  'feff:ffff:ffff:ffff::').is_site_local)
          self.assertEqual(False, ipaddress.ip_address(
                  'fbf:ffff::').is_site_local)
          self.assertEqual(False, ipaddress.ip_address('ff00::').is_site_local)
  
          self.assertEqual(True, ipaddress.ip_address('fc00::').is_private)
          self.assertEqual(True, ipaddress.ip_address(
                  'fc00:ffff:ffff:ffff::').is_private)
          self.assertEqual(False, ipaddress.ip_address('fbff:ffff::').is_private)
          self.assertEqual(False, ipaddress.ip_address('fe00::').is_private)
  
          self.assertEqual(True, ipaddress.ip_address('fea0::').is_link_local)
          self.assertEqual(True, ipaddress.ip_address(
                  'febf:ffff::').is_link_local)
          self.assertEqual(False, ipaddress.ip_address(
                  'fe7f:ffff::').is_link_local)
          self.assertEqual(False, ipaddress.ip_address('fec0::').is_link_local)
  
          self.assertEqual(True, ipaddress.ip_address('0:0::0:01').is_loopback)
          self.assertEqual(True, ipaddress.ip_address('::1').is_loopback)
          self.assertEqual(False, ipaddress.ip_address('::2').is_loopback)
  
          self.assertEqual(True, ipaddress.ip_address('0::0').is_unspecified)
          self.assertEqual(False, ipaddress.ip_address('::1').is_unspecified)
  
          # some generic IETF reserved addresses
          self.assertEqual(True, ipaddress.ip_address('100::').is_reserved)
          self.assertEqual(True, ipaddress.ip_network('4000::1/128').is_reserved)
  
      def testIpv4Mapped(self):
          self.assertEqual(
                  ipaddress.ip_address('::ffff:192.168.1.1').ipv4_mapped,
                  ipaddress.ip_address('192.168.1.1'))
          self.assertEqual(ipaddress.ip_address('::c0a8:101').ipv4_mapped, None)
          self.assertEqual(ipaddress.ip_address('::ffff:c0a8:101').ipv4_mapped,
                           ipaddress.ip_address('192.168.1.1'))
  
      def testAddrExclude(self):
          addr1 = ipaddress.ip_network('10.1.1.0/24')
          addr2 = ipaddress.ip_network('10.1.1.0/26')
          addr3 = ipaddress.ip_network('10.2.1.0/24')
          addr4 = ipaddress.ip_address('10.1.1.0')
          addr5 = ipaddress.ip_network('2001:db8::0/32')
          addr6 = ipaddress.ip_network('10.1.1.5/32')
          self.assertEqual(sorted(list(addr1.address_exclude(addr2))),
                           [ipaddress.ip_network('10.1.1.64/26'),
                            ipaddress.ip_network('10.1.1.128/25')])
          self.assertRaises(ValueError, list, addr1.address_exclude(addr3))
          self.assertRaises(TypeError, list, addr1.address_exclude(addr4))
          self.assertRaises(TypeError, list, addr1.address_exclude(addr5))
          self.assertEqual(list(addr1.address_exclude(addr1)), [])
          self.assertEqual(sorted(list(addr1.address_exclude(addr6))),
                           [ipaddress.ip_network('10.1.1.0/30'),
                            ipaddress.ip_network('10.1.1.4/32'),
                            ipaddress.ip_network('10.1.1.6/31'),
                            ipaddress.ip_network('10.1.1.8/29'),
                            ipaddress.ip_network('10.1.1.16/28'),
                            ipaddress.ip_network('10.1.1.32/27'),
                            ipaddress.ip_network('10.1.1.64/26'),
                            ipaddress.ip_network('10.1.1.128/25')])
  
      def testHash(self):
          self.assertEqual(hash(ipaddress.ip_interface('10.1.1.0/24')),
                           hash(ipaddress.ip_interface('10.1.1.0/24')))
          self.assertEqual(hash(ipaddress.ip_network('10.1.1.0/24')),
                           hash(ipaddress.ip_network('10.1.1.0/24')))
          self.assertEqual(hash(ipaddress.ip_address('10.1.1.0')),
                           hash(ipaddress.ip_address('10.1.1.0')))
          # i70
          self.assertEqual(hash(ipaddress.ip_address('1.2.3.4')),
                           hash(ipaddress.ip_address(
                      int(ipaddress.ip_address('1.2.3.4')._ip))))
          ip1 = ipaddress.ip_address('10.1.1.0')
          ip2 = ipaddress.ip_address('1::')
          dummy = {}
          dummy[self.ipv4_address] = None
          dummy[self.ipv6_address] = None
          dummy[ip1] = None
          dummy[ip2] = None
          self.assertIn(self.ipv4_address, dummy)
          self.assertIn(ip2, dummy)
  
      def testIPBases(self):
          net = self.ipv4_network
          self.assertEqual('1.2.3.0/24', net.compressed)
          net = self.ipv6_network
          self.assertRaises(ValueError, net._string_from_ip_int, 2**128 + 1)
  
      def testIPv6NetworkHelpers(self):
          net = self.ipv6_network
          self.assertEqual('2001:658:22a:cafe::/64', net.with_prefixlen)
          self.assertEqual('2001:658:22a:cafe::/ffff:ffff:ffff:ffff::',
                           net.with_netmask)
          self.assertEqual('2001:658:22a:cafe::/::ffff:ffff:ffff:ffff',
                           net.with_hostmask)
          self.assertEqual('2001:658:22a:cafe::/64', str(net))
  
      def testIPv4NetworkHelpers(self):
          net = self.ipv4_network
          self.assertEqual('1.2.3.0/24', net.with_prefixlen)
          self.assertEqual('1.2.3.0/255.255.255.0', net.with_netmask)
          self.assertEqual('1.2.3.0/0.0.0.255', net.with_hostmask)
          self.assertEqual('1.2.3.0/24', str(net))
  
      def testCopyConstructor(self):
          addr1 = ipaddress.ip_network('10.1.1.0/24')
          addr2 = ipaddress.ip_network(addr1)
          addr3 = ipaddress.ip_interface('2001:658:22a:cafe:200::1/64')
          addr4 = ipaddress.ip_interface(addr3)
          addr5 = ipaddress.IPv4Address('1.1.1.1')
          addr6 = ipaddress.IPv6Address('2001:658:22a:cafe:200::1')
  
          self.assertEqual(addr1, addr2)
          self.assertEqual(addr3, addr4)
          self.assertEqual(addr5, ipaddress.IPv4Address(addr5))
          self.assertEqual(addr6, ipaddress.IPv6Address(addr6))
  
      def testCompressIPv6Address(self):
          test_addresses = {
              '1:2:3:4:5:6:7:8': '1:2:3:4:5:6:7:8/128',
              '2001:0:0:4:0:0:0:8': '2001:0:0:4::8/128',
              '2001:0:0:4:5:6:7:8': '2001::4:5:6:7:8/128',
              '2001:0:3:4:5:6:7:8': '2001:0:3:4:5:6:7:8/128',
              '0:0:3:0:0:0:0:ffff': '0:0:3::ffff/128',
              '0:0:0:4:0:0:0:ffff': '::4:0:0:0:ffff/128',
              '0:0:0:0:5:0:0:ffff': '::5:0:0:ffff/128',
              '1:0:0:4:0:0:7:8': '1::4:0:0:7:8/128',
              '0:0:0:0:0:0:0:0': '::/128',
              '0:0:0:0:0:0:0:0/0': '::/0',
              '0:0:0:0:0:0:0:1': '::1/128',
              '2001:0658:022a:cafe:0000:0000:0000:0000/66':
              '2001:658:22a:cafe::/66',
              '::1.2.3.4': '::102:304/128',
              '1:2:3:4:5:ffff:1.2.3.4': '1:2:3:4:5:ffff:102:304/128',
              '::7:6:5:4:3:2:1': '0:7:6:5:4:3:2:1/128',
              '::7:6:5:4:3:2:0': '0:7:6:5:4:3:2:0/128',
              '7:6:5:4:3:2:1::': '7:6:5:4:3:2:1:0/128',
              '0:6:5:4:3:2:1::': '0:6:5:4:3:2:1:0/128',
              }
          for uncompressed, compressed in list(test_addresses.items()):
              self.assertEqual(compressed, str(ipaddress.IPv6Interface(
                  uncompressed)))
  
      def testExplodeShortHandIpStr(self):
          addr1 = ipaddress.IPv6Interface('2001::1')
          addr2 = ipaddress.IPv6Address('2001:0:5ef5:79fd:0:59d:a0e5:ba1')
          addr3 = ipaddress.IPv6Network('2001::/96')
          addr4 = ipaddress.IPv4Address('192.168.178.1')
          self.assertEqual('2001:0000:0000:0000:0000:0000:0000:0001/128',
                           addr1.exploded)
          self.assertEqual('0000:0000:0000:0000:0000:0000:0000:0001/128',
                           ipaddress.IPv6Interface('::1/128').exploded)
          # issue 77
          self.assertEqual('2001:0000:5ef5:79fd:0000:059d:a0e5:0ba1',
                           addr2.exploded)
          self.assertEqual('2001:0000:0000:0000:0000:0000:0000:0000/96',
                           addr3.exploded)
          self.assertEqual('192.168.178.1', addr4.exploded)
  
      def testReversePointer(self):
          addr1 = ipaddress.IPv4Address('127.0.0.1')
          addr2 = ipaddress.IPv6Address('2001:db8::1')
          self.assertEqual('1.0.0.127.in-addr.arpa', addr1.reverse_pointer)
          self.assertEqual('1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.' +
                           'b.d.0.1.0.0.2.ip6.arpa',
                           addr2.reverse_pointer)
  
      def testIntRepresentation(self):
          self.assertEqual(16909060, int(self.ipv4_address))
          self.assertEqual(42540616829182469433547762482097946625,
                           int(self.ipv6_address))
  
      def testForceVersion(self):
          self.assertEqual(ipaddress.ip_network(1).version, 4)
          self.assertEqual(ipaddress.IPv6Network(1).version, 6)
  
      def testWithStar(self):
          self.assertEqual(self.ipv4_interface.with_prefixlen, "1.2.3.4/24")
          self.assertEqual(self.ipv4_interface.with_netmask,
                           "1.2.3.4/255.255.255.0")
          self.assertEqual(self.ipv4_interface.with_hostmask,
                           "1.2.3.4/0.0.0.255")
  
          self.assertEqual(self.ipv6_interface.with_prefixlen,
                           '2001:658:22a:cafe:200::1/64')
          self.assertEqual(self.ipv6_interface.with_netmask,
                           '2001:658:22a:cafe:200::1/ffff:ffff:ffff:ffff::')
          # this probably don't make much sense, but it's included for
          # compatibility with ipv4
          self.assertEqual(self.ipv6_interface.with_hostmask,
                           '2001:658:22a:cafe:200::1/::ffff:ffff:ffff:ffff')
  
      def testNetworkElementCaching(self):
          # V4 - make sure we're empty
          self.assertNotIn('broadcast_address', self.ipv4_network.__dict__)
          self.assertNotIn('hostmask', self.ipv4_network.__dict__)
  
          # V4 - populate and test
          self.assertEqual(self.ipv4_network.broadcast_address,
                           ipaddress.IPv4Address('1.2.3.255'))
          self.assertEqual(self.ipv4_network.hostmask,
                           ipaddress.IPv4Address('0.0.0.255'))
  
          # V4 - check we're cached
          self.assertIn('broadcast_address', self.ipv4_network.__dict__)
          self.assertIn('hostmask', self.ipv4_network.__dict__)
  
          # V6 - make sure we're empty
          self.assertNotIn('broadcast_address', self.ipv6_network.__dict__)
          self.assertNotIn('hostmask', self.ipv6_network.__dict__)
  
          # V6 - populate and test
          self.assertEqual(self.ipv6_network.network_address,
                           ipaddress.IPv6Address('2001:658:22a:cafe::'))
          self.assertEqual(self.ipv6_interface.network.network_address,
                           ipaddress.IPv6Address('2001:658:22a:cafe::'))
  
          self.assertEqual(
              self.ipv6_network.broadcast_address,
              ipaddress.IPv6Address('2001:658:22a:cafe:ffff:ffff:ffff:ffff'))
          self.assertEqual(self.ipv6_network.hostmask,
                           ipaddress.IPv6Address('::ffff:ffff:ffff:ffff'))
          self.assertEqual(
              self.ipv6_interface.network.broadcast_address,
              ipaddress.IPv6Address('2001:658:22a:cafe:ffff:ffff:ffff:ffff'))
          self.assertEqual(self.ipv6_interface.network.hostmask,
                           ipaddress.IPv6Address('::ffff:ffff:ffff:ffff'))
  
          # V6 - check we're cached
          self.assertIn('broadcast_address', self.ipv6_network.__dict__)
          self.assertIn('hostmask', self.ipv6_network.__dict__)
          self.assertIn('broadcast_address', self.ipv6_interface.network.__dict__)
          self.assertIn('hostmask', self.ipv6_interface.network.__dict__)
  
      def testTeredo(self):
          # stolen from wikipedia
          server = ipaddress.IPv4Address('65.54.227.120')
          client = ipaddress.IPv4Address('192.0.2.45')
          teredo_addr = '2001:0000:4136:e378:8000:63bf:3fff:fdd2'
          self.assertEqual((server, client),
                           ipaddress.ip_address(teredo_addr).teredo)
          bad_addr = '2000::4136:e378:8000:63bf:3fff:fdd2'
          self.assertFalse(ipaddress.ip_address(bad_addr).teredo)
          bad_addr = '2001:0001:4136:e378:8000:63bf:3fff:fdd2'
          self.assertFalse(ipaddress.ip_address(bad_addr).teredo)
  
          # i77
          teredo_addr = ipaddress.IPv6Address('2001:0:5ef5:79fd:0:59d:a0e5:ba1')
          self.assertEqual((ipaddress.IPv4Address('94.245.121.253'),
                            ipaddress.IPv4Address('95.26.244.94')),
                           teredo_addr.teredo)
  
      def testsixtofour(self):
          sixtofouraddr = ipaddress.ip_address('2002:ac1d:2d64::1')
          bad_addr = ipaddress.ip_address('2000:ac1d:2d64::1')
          self.assertEqual(ipaddress.IPv4Address('172.29.45.100'),
                           sixtofouraddr.sixtofour)
          self.assertFalse(bad_addr.sixtofour)
  
      # issue41004 Hash collisions in IPv4Interface and IPv6Interface
      def testV4HashIsNotConstant(self):
          ipv4_address1 = ipaddress.IPv4Interface("1.2.3.4")
          ipv4_address2 = ipaddress.IPv4Interface("2.3.4.5")
          self.assertNotEqual(ipv4_address1.__hash__(), ipv4_address2.__hash__())
  
      # issue41004 Hash collisions in IPv4Interface and IPv6Interface
      def testV6HashIsNotConstant(self):
          ipv6_address1 = ipaddress.IPv6Interface("2001:658:22a:cafe:200:0:0:1")
          ipv6_address2 = ipaddress.IPv6Interface("2001:658:22a:cafe:200:0:0:2")
          self.assertNotEqual(ipv6_address1.__hash__(), ipv6_address2.__hash__())
  
  
  if __name__ == '__main__':
      unittest.main()
  