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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
from __future__ import division, absolute_import
import os
import socket
from twisted.trial import unittest
from twisted.internet.address import IPv4Address, UNIXAddress, IPv6Address
from twisted.internet.address import HostnameAddress
from twisted.python.compat import nativeString
from twisted.python.runtime import platform
if not platform._supportsSymlinks():
symlinkSkip = "Platform does not support symlinks"
else:
symlinkSkip = None
try:
socket.AF_UNIX
except AttributeError:
unixSkip = "Platform doesn't support UNIX sockets."
else:
unixSkip = None
class AddressTestCaseMixin(object):
def test_addressComparison(self):
"""
Two different address instances, sharing the same properties are
considered equal by C{==} and not considered not equal by C{!=}.
Note: When applied via UNIXAddress class, this uses the same
filename for both objects being compared.
"""
self.assertTrue(self.buildAddress() == self.buildAddress())
self.assertFalse(self.buildAddress() != self.buildAddress())
def test_hash(self):
"""
C{__hash__} can be used to get a hash of an address, allowing
addresses to be used as keys in dictionaries, for instance.
"""
addr = self.buildAddress()
d = {addr: True}
self.assertTrue(d[self.buildAddress()])
def test_differentNamesComparison(self):
"""
Check that comparison operators work correctly on address objects
when a different name is passed in
"""
self.assertFalse(self.buildAddress() == self.buildDifferentAddress())
self.assertFalse(self.buildDifferentAddress() == self.buildAddress())
self.assertTrue(self.buildAddress() != self.buildDifferentAddress())
self.assertTrue(self.buildDifferentAddress() != self.buildAddress())
def assertDeprecations(self, testMethod, message):
"""
Assert that the a DeprecationWarning with the given message was
emitted against the given method.
"""
warnings = self.flushWarnings([testMethod])
self.assertEqual(warnings[0]['category'], DeprecationWarning)
self.assertEqual(warnings[0]['message'], message)
self.assertEqual(len(warnings), 1)
class IPv4AddressTestCaseMixin(AddressTestCaseMixin):
addressArgSpec = (("type", "%s"), ("host", "%r"), ("port", "%d"))
class HostnameAddressTests(unittest.TestCase, AddressTestCaseMixin):
"""
Test case for L{HostnameAddress}.
"""
addressArgSpec = (("hostname", "%s"), ("port", "%d"))
def buildAddress(self):
"""
Create an arbitrary new L{HostnameAddress} instance.
@return: A L{HostnameAddress} instance.
"""
return HostnameAddress(b"example.com", 0)
def buildDifferentAddress(self):
"""
Like L{buildAddress}, but with a different hostname.
@return: A L{HostnameAddress} instance.
"""
return HostnameAddress(b"example.net", 0)
class IPv4AddressTCPTests(unittest.SynchronousTestCase,
IPv4AddressTestCaseMixin):
def buildAddress(self):
"""
Create an arbitrary new L{IPv4Address} instance with a C{"TCP"}
type. A new instance is created for each call, but always for the
same address.
"""
return IPv4Address("TCP", "127.0.0.1", 0)
def buildDifferentAddress(self):
"""
Like L{buildAddress}, but with a different fixed address.
"""
return IPv4Address("TCP", "127.0.0.2", 0)
class IPv4AddressUDPTests(unittest.SynchronousTestCase,
IPv4AddressTestCaseMixin):
def buildAddress(self):
"""
Create an arbitrary new L{IPv4Address} instance with a C{"UDP"}
type. A new instance is created for each call, but always for the
same address.
"""
return IPv4Address("UDP", "127.0.0.1", 0)
def buildDifferentAddress(self):
"""
Like L{buildAddress}, but with a different fixed address.
"""
return IPv4Address("UDP", "127.0.0.2", 0)
class IPv6AddressTests(unittest.SynchronousTestCase, AddressTestCaseMixin):
addressArgSpec = (("type", "%s"), ("host", "%r"), ("port", "%d"))
def buildAddress(self):
"""
Create an arbitrary new L{IPv6Address} instance with a C{"TCP"}
type. A new instance is created for each call, but always for the
same address.
"""
return IPv6Address("TCP", "::1", 0)
def buildDifferentAddress(self):
"""
Like L{buildAddress}, but with a different fixed address.
"""
return IPv6Address("TCP", "::2", 0)
class UNIXAddressTests(unittest.SynchronousTestCase):
skip = unixSkip
addressArgSpec = (("name", "%r"),)
def setUp(self):
self._socketAddress = self.mktemp()
self._otherAddress = self.mktemp()
def buildAddress(self):
"""
Create an arbitrary new L{UNIXAddress} instance. A new instance is
created for each call, but always for the same address.
"""
return UNIXAddress(self._socketAddress)
def buildDifferentAddress(self):
"""
Like L{buildAddress}, but with a different fixed address.
"""
return UNIXAddress(self._otherAddress)
def test_repr(self):
"""
The repr of L{UNIXAddress} returns with the filename that the
L{UNIXAddress} is for.
"""
self.assertEqual(repr(self.buildAddress()), "UNIXAddress('%s')" % (
nativeString(self._socketAddress)))
def test_comparisonOfLinkedFiles(self):
"""
UNIXAddress objects compare as equal if they link to the same file.
"""
linkName = self.mktemp()
with open(self._socketAddress, 'w') as self.fd:
os.symlink(os.path.abspath(self._socketAddress), linkName)
self.assertEqual(UNIXAddress(self._socketAddress),
UNIXAddress(linkName))
self.assertEqual(UNIXAddress(linkName),
UNIXAddress(self._socketAddress))
if not unixSkip:
test_comparisonOfLinkedFiles.skip = symlinkSkip
def test_hashOfLinkedFiles(self):
"""
UNIXAddress Objects that compare as equal have the same hash value.
"""
linkName = self.mktemp()
with open(self._socketAddress, 'w') as self.fd:
os.symlink(os.path.abspath(self._socketAddress), linkName)
self.assertEqual(hash(UNIXAddress(self._socketAddress)),
hash(UNIXAddress(linkName)))
if not unixSkip:
test_hashOfLinkedFiles.skip = symlinkSkip
class EmptyUNIXAddressTests(unittest.SynchronousTestCase,
AddressTestCaseMixin):
"""
Tests for L{UNIXAddress} operations involving a L{None} address.
"""
skip = unixSkip
addressArgSpec = (("name", "%r"),)
def setUp(self):
self._socketAddress = self.mktemp()
def buildAddress(self):
"""
Create an arbitrary new L{UNIXAddress} instance. A new instance is
created for each call, but always for the same address. This builds it
with a fixed address of L{None}.
"""
return UNIXAddress(None)
def buildDifferentAddress(self):
"""
Like L{buildAddress}, but with a random temporary directory.
"""
return UNIXAddress(self._socketAddress)
def test_comparisonOfLinkedFiles(self):
"""
A UNIXAddress referring to a L{None} address does not compare equal to a
UNIXAddress referring to a symlink.
"""
linkName = self.mktemp()
with open(self._socketAddress, 'w') as self.fd:
os.symlink(os.path.abspath(self._socketAddress), linkName)
self.assertNotEqual(UNIXAddress(self._socketAddress),
UNIXAddress(None))
self.assertNotEqual(UNIXAddress(None),
UNIXAddress(self._socketAddress))
if not unixSkip:
test_comparisonOfLinkedFiles.skip = symlinkSkip
def test_emptyHash(self):
"""
C{__hash__} can be used to get a hash of an address, even one referring
to L{None} rather than a real path.
"""
addr = self.buildAddress()
d = {addr: True}
self.assertTrue(d[self.buildAddress()])