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Current File : //usr/lib/python3/dist-packages/twisted/test/test_abstract.py
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Tests for generic file descriptor based reactor support code.
"""

from __future__ import division, absolute_import

from twisted.trial.unittest import TestCase

from twisted.internet.abstract import isIPAddress

from socket import AF_IPX


class AddressTests(TestCase):
    """
    Tests for address-related functionality.
    """
    def test_decimalDotted(self):
        """
        L{isIPAddress} should return C{True} for any decimal dotted
        representation of an IPv4 address.
        """
        self.assertTrue(isIPAddress('0.1.2.3'))
        self.assertTrue(isIPAddress('252.253.254.255'))


    def test_shortDecimalDotted(self):
        """
        L{isIPAddress} should return C{False} for a dotted decimal
        representation with fewer or more than four octets.
        """
        self.assertFalse(isIPAddress('0'))
        self.assertFalse(isIPAddress('0.1'))
        self.assertFalse(isIPAddress('0.1.2'))
        self.assertFalse(isIPAddress('0.1.2.3.4'))


    def test_invalidLetters(self):
        """
        L{isIPAddress} should return C{False} for any non-decimal dotted
        representation including letters.
        """
        self.assertFalse(isIPAddress('a.2.3.4'))
        self.assertFalse(isIPAddress('1.b.3.4'))


    def test_invalidPunctuation(self):
        """
        L{isIPAddress} should return C{False} for a string containing
        strange punctuation.
        """
        self.assertFalse(isIPAddress(','))
        self.assertFalse(isIPAddress('1,2'))
        self.assertFalse(isIPAddress('1,2,3'))
        self.assertFalse(isIPAddress('1.,.3,4'))


    def test_emptyString(self):
        """
        L{isIPAddress} should return C{False} for the empty string.
        """
        self.assertFalse(isIPAddress(''))


    def test_invalidNegative(self):
        """
        L{isIPAddress} should return C{False} for negative decimal values.
        """
        self.assertFalse(isIPAddress('-1'))
        self.assertFalse(isIPAddress('1.-2'))
        self.assertFalse(isIPAddress('1.2.-3'))
        self.assertFalse(isIPAddress('1.2.-3.4'))


    def test_invalidPositive(self):
        """
        L{isIPAddress} should return C{False} for a string containing
        positive decimal values greater than 255.
        """
        self.assertFalse(isIPAddress('256.0.0.0'))
        self.assertFalse(isIPAddress('0.256.0.0'))
        self.assertFalse(isIPAddress('0.0.256.0'))
        self.assertFalse(isIPAddress('0.0.0.256'))
        self.assertFalse(isIPAddress('256.256.256.256'))


    def test_unicodeAndBytes(self):
        """
        L{isIPAddress} evaluates ASCII-encoded bytes as well as text.
        """
        self.assertFalse(isIPAddress(b'256.0.0.0'))
        self.assertFalse(isIPAddress(u'256.0.0.0'))
        self.assertTrue(isIPAddress(b'252.253.254.255'))
        self.assertTrue(isIPAddress(u'252.253.254.255'))


    def test_nonIPAddressFamily(self):
        """
        All address families other than C{AF_INET} and C{AF_INET6} result in a
        L{ValueError} being raised.
        """
        self.assertRaises(ValueError, isIPAddress, b'anything', AF_IPX)


    def test_nonASCII(self):
        """
        All IP addresses must be encodable as ASCII; non-ASCII should result in
        a L{False} result.
        """
        self.assertFalse(isIPAddress(b'\xff.notascii'))
        self.assertFalse(isIPAddress(u'\u4321.notascii'))

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