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test_ipaddress.py
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test_ipaddress.py
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# Copyright 2007 Google Inc.
# Licensed to PSF under a Contributor Agreement.
"""Unittest for ipaddress module."""
import unittest
import re
import contextlib
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):
# bpo-36384: no leading zeros to avoid ambiguity with octal notation
msg = "Leading zeros are not permitted in '\d+'"
addresses = [
"000.000.000.000",
"192.168.000.001",
"016.016.016.016",
"192.168.000.001",
"001.000.008.016",
"01.2.3.40",
"1.02.3.40",
"1.2.03.40",
"1.2.3.040",
]
for address in addresses:
with self.subTest(address=address):
with self.assertAddressError(msg):
self.factory(address)
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)
def test_blank_scope_id(self):
address = ('::1%')
with self.assertAddressError('Invalid IPv6 address: "%r"', address):
self.factory(address)
def test_invalid_scope_id_with_percent(self):
address = ('::1%scope%')
with self.assertAddressError('Invalid IPv6 address: "%r"', address):
self.factory(address)
class AddressTestCase_v4(BaseTestCase, CommonTestMixin_v4):
factory = ipaddress.IPv4Address
def test_format(self):
v4 = ipaddress.IPv4Address("1.2.3.42")
v4_pairs = [
("b" ,"00000001000000100000001100101010"),
("n" ,"00000001000000100000001100101010"),
("x" ,"0102032a"),
("X" ,"0102032A"),
("_b" ,"0000_0001_0000_0010_0000_0011_0010_1010"),
("_n" ,"0000_0001_0000_0010_0000_0011_0010_1010"),
("_x" ,"0102_032a"),
("_X" ,"0102_032A"),
("#b" ,"0b00000001000000100000001100101010"),
("#n" ,"0b00000001000000100000001100101010"),
("#x" ,"0x0102032a"),
("#X" ,"0X0102032A"),
("#_b" ,"0b0000_0001_0000_0010_0000_0011_0010_1010"),
("#_n" ,"0b0000_0001_0000_0010_0000_0011_0010_1010"),
("#_x" ,"0x0102_032a"),
("#_X" ,"0X0102_032A"),
("s" ,"1.2.3.42"),
("" ,"1.2.3.42"),
]
for (fmt, txt) in v4_pairs:
self.assertEqual(txt, format(v4, fmt))
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_format(self):
v6 = ipaddress.IPv6Address("::1.2.3.42")
v6_pairs = [
("b",
"000000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000010000"
"00100000001100101010"),
("n", "0000000000000000000000000102032a"),
("x", "0000000000000000000000000102032a"),
("X", "0000000000000000000000000102032A"),
("_b",
"0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000"
"_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000"
"_0000_0000_0000_0000_0001_0000_0010_0000_0011_0010"
"_1010"),
("_n", "0000_0000_0000_0000_0000_0000_0102_032a"),
("_x", "0000_0000_0000_0000_0000_0000_0102_032a"),
("_X", "0000_0000_0000_0000_0000_0000_0102_032A"),
("#b",
"0b0000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000100"
"0000100000001100101010"),
("#n", "0x0000000000000000000000000102032a"),
("#x", "0x0000000000000000000000000102032a"),
("#X", "0X0000000000000000000000000102032A"),
("#_b",
"0b0000_0000_0000_0000_0000_0000_0000_0000_0000_0000"
"_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000"
"_0000_0000_0000_0000_0000_0001_0000_0010_0000_0011"
"_0010_1010"),
("#_n", "0x0000_0000_0000_0000_0000_0000_0102_032a"),
("#_x", "0x0000_0000_0000_0000_0000_0000_0102_032a"),
("#_X", "0X0000_0000_0000_0000_0000_0000_0102_032A"),
("s", "::102:32a"),
("", "::102:32a"),
]
for (fmt, txt) in v6_pairs:
self.assertEqual(txt, format(v6, fmt))
def test_network_passed_as_address(self):
def assertBadSplit(addr):
msg = "Unexpected '/' in %r"
with self.assertAddressError(msg, addr):
ipaddress.IPv6Address(addr)
assertBadSplit("::1/24")
assertBadSplit("::1%scope_id/24")
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.split('%')[0]):
ipaddress.IPv6Address(addr)
assertBadSplit(":")
assertBadSplit(":1")
assertBadSplit("FEDC:9878")
assertBadSplit(":%scope")
assertBadSplit(":1%scope")
assertBadSplit("FEDC:9878%scope")
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.split('%')[0]):
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")
assertBadSplit("9:8:7:6:5:4:3::2:1%scope")
assertBadSplit("10:9:8:7:6:5:4:3:2:1%scope")
assertBadSplit("::8:7:6:5:4:3:2:1%scope")
assertBadSplit("8:7:6:5:4:3:2:1::%scope")
# A trailing IPv4 address is two parts
assertBadSplit("10:9:8:7:6:5:4:3:42.42.42.42%scope")
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.split('%')[0]):
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")
assertBadSplit("3ffe:0:0:0:0:0:0:0:1%scope")
assertBadSplit("9:8:7:6:5:4:3:2:1%scope")
assertBadSplit("7:6:5:4:3:2:1%scope")
# A trailing IPv4 address is two parts
assertBadSplit("9:8:7:6:5:4:3:42.42.42.42%scope")
assertBadSplit("7:6:5:4:3:42.42.42.42%scope")
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.split('%')[0]):
ipaddress.IPv6Address(addr)
assertBadSplit("1:2:3:4::5:6:7:8")
assertBadSplit("1:2:3:4::5:6:7:8%scope")
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.split('%')[0]):
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')
assertBadSplit("3ffe::1::1%scope")
assertBadSplit("1::2::3::4:5%scope")
assertBadSplit("2001::db:::1%scope")
assertBadSplit("3ffe::1::%scope")
assertBadSplit("::3ffe::1%scope")
assertBadSplit(":3ffe::1::1%scope")
assertBadSplit("3ffe::1::1:%scope")
assertBadSplit(":3ffe::1::1:%scope")
assertBadSplit(":::%scope")
assertBadSplit('2001:db8:::1%scope')
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.split('%')[0]):
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::")
assertBadSplit(":2001:db8::1%scope")
assertBadSplit(":1:2:3:4:5:6:7%scope")
assertBadSplit(":1:2:3:4:5:6:%scope")
assertBadSplit(":6:5:4:3:2:1::%scope")
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.split('%')[0]):
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:")
assertBadSplit("2001:db8::1:%scope")
assertBadSplit("1:2:3:4:5:6:7:%scope")
assertBadSplit("::1.2.3.4:%scope")
assertBadSplit("::7:6:5:4:3:2:%scope")
def test_bad_v4_part_in(self):
def assertBadAddressPart(addr, v4_error):
with self.assertAddressError("%s in %r", v4_error, addr.split('%')[0]):
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'")
assertBadAddressPart("3ffe::1.net%scope", "Expected 4 octets in '1.net'")
assertBadAddressPart("3ffe::127.0.1%scope",
"Expected 4 octets in '127.0.1'")
assertBadAddressPart("::1.2.3%scope",
"Expected 4 octets in '1.2.3'")
assertBadAddressPart("::1.2.3.4.5%scope",
"Expected 4 octets in '1.2.3.4.5'")
assertBadAddressPart("3ffe::1.1.1.net%scope",
"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.split('%')[0])
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")
assertBadPart("3ffe::goog%scope", "goog")
assertBadPart("3ffe::-0%scope", "-0")
assertBadPart("3ffe::+0%scope", "+0")
assertBadPart("3ffe::-1%scope", "-1")
assertBadPart("1.2.3.4::%scope", "1.2.3.4")
assertBadPart('1234:axy::b%scope', "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.split('%')[0]):
ipaddress.IPv6Address(addr)
assertBadPart("::00000", "00000")
assertBadPart("3ffe::10000", "10000")
assertBadPart("02001:db8::", "02001")
assertBadPart('2001:888888::1', "888888")
assertBadPart("::00000%scope", "00000")
assertBadPart("3ffe::10000%scope", "10000")
assertBadPart("02001:db8::%scope", "02001")
assertBadPart('2001:888888::1%scope', "888888")
def test_pickle(self):
self.pickle_test('2001:db8::')
def test_weakref(self):
weakref.ref(self.factory('2001:db8::'))
weakref.ref(self.factory('2001:db8::%scope'))
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', 24))), '192.0.2.0/24')
self.assertEqual(str(self.factory(('192.0.2.0', '24'))), '192.0.2.0/24')
self.assertEqual(str(self.factory(('192.0.2.0', '255.255.255.0'))),
'192.0.2.0/24')
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)
scoped_net = self.factory('::1%scope')
self.assertEqual(str(scoped_net), '::1%scope/128')
self.assertEqual(str(scoped_net.netmask), 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff')
self.assertEqual(str(scoped_net.hostmask), '::')
def test_split_netmask(self):
addr = "cafe:cafe::/128/190"
with self.assertAddressError("Only one '/' permitted in %r" % addr):
self.factory(addr)
scoped_addr = "cafe:cafe::%scope/128/190"
with self.assertAddressError("Only one '/' permitted in %r" % scoped_addr):
self.factory(scoped_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")
assertBadAddress("/%scope", "Address cannot be empty")
assertBadAddress("/%scope8", "Address cannot be empty")
assertBadAddress("google.com%scope", "At least 3 parts")
assertBadAddress("1.2.3.4%scope", "At least 3 parts")
assertBadAddress("10%scope/8", "At least 3 parts")
assertBadAddress("1234:axy::b%scope", "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')
self.assertEqual(str(self.factory(('2001:db8::', '32'))),
'2001:db8::/32')
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)
self.assertEqual(str(self.factory('2001:db8::%scope/32')), '2001:db8::%scope/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("::", "::")
assertBadNetmask("::1%scope", "pudding")
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)
assertBadNetmask("::1%scope", 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
self.pickle_test('2001:db8::1000%scope') # 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')))
self.assertFalse(
self.factory('2000:999::%scope/56').subnet_of(
self.factory('2000:aaa::%scope/48')))
self.assertTrue(
self.factory('2000:aaa::%scope/56').subnet_of(
self.factory('2000:aaa::%scope/48')))
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)
v6addr_scoped = ipaddress.IPv6Address('::1%scope')
v6net_scoped= ipaddress.IPv6Network('::1%scope')
v6intf_scoped= ipaddress.IPv6Interface('::1%scope')
v4_addresses = [v4addr, v4intf]
v4_objects = v4_addresses + [v4net]
v6_addresses = [v6addr, v6intf]
v6_objects = v6_addresses + [v6net]
v6_scoped_addresses = [v6addr_scoped, v6intf_scoped]
v6_scoped_objects = v6_scoped_addresses + [v6net_scoped]
objects = v4_objects + v6_objects
objects_with_scoped = objects + v6_scoped_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)
v6addr2_scoped = ipaddress.IPv6Address('::2%scope')
v6net2_scoped = ipaddress.IPv6Network('::2%scope')
v6intf2_scoped = ipaddress.IPv6Interface('::2%scope')
def test_foreign_type_equality(self):
# __eq__ should never raise TypeError directly
other = object()
for obj in self.objects_with_scoped:
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_scoped_ipv6_equality(self):
for lhs, rhs in zip(self.v6_objects, self.v6_scoped_objects):
self.assertNotEqual(lhs, rhs)
def test_v4_with_v6_scoped_equality(self):
for lhs in self.v4_objects:
for rhs in self.v6_scoped_objects:
self.assertNotEqual(lhs, rhs)
def test_same_type_equality(self):
for obj in self.objects_with_scoped:
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.v6addr_scoped, self.v6addr2_scoped),
(self.v6net_scoped, self.v6net2_scoped),
(self.v6intf_scoped, self.v6intf2_scoped),
):
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.v6_scoped_addresses:
self.assertIn(obj, self.v6net)
for obj in self.v6_addresses + self.v6_scoped_addresses:
self.assertIn(obj, self.v6net_scoped)
for obj in self.v4_objects + [self.v6net, self.v6net_scoped]:
self.assertNotIn(obj, self.v6net)
for obj in self.v4_objects + [self.v6net, self.v6net_scoped]:
self.assertNotIn(obj, self.v6net_scoped)
for obj in self.v6_objects + self.v6_scoped_objects + [self.v4net]:
self.assertNotIn(obj, self.v4net)
def test_mixed_type_ordering(self):
for lhs in self.objects_with_scoped:
for rhs in self.objects_with_scoped:
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_scoped:
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)