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# Copyright (c) 2001-2008 Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.python.compat}.
"""
import types, socket
from twisted.trial import unittest
from twisted.python.compat import set, frozenset, reduce
class IterableCounter:
def __init__(self, lim=0):
self.lim = lim
self.i = -1
def __iter__(self):
return self
def next(self):
self.i += 1
if self.i >= self.lim:
raise StopIteration
return self.i
class CompatTestCase(unittest.TestCase):
def testDict(self):
d1 = {'a': 'b'}
d2 = dict(d1)
self.assertEquals(d1, d2)
d1['a'] = 'c'
self.assertNotEquals(d1, d2)
d2 = dict(d1.items())
self.assertEquals(d1, d2)
def testBool(self):
self.assertEquals(bool('hi'), True)
self.assertEquals(bool(True), True)
self.assertEquals(bool(''), False)
self.assertEquals(bool(False), False)
def testIteration(self):
lst1, lst2 = range(10), []
for i in iter(lst1):
lst2.append(i)
self.assertEquals(lst1, lst2)
del lst2[:]
try:
iterable = iter(lst1)
while 1:
lst2.append(iterable.next())
except StopIteration:
pass
self.assertEquals(lst1, lst2)
del lst2[:]
for i in iter(IterableCounter(10)):
lst2.append(i)
self.assertEquals(lst1, lst2)
del lst2[:]
try:
iterable = iter(IterableCounter(10))
while 1:
lst2.append(iterable.next())
except StopIteration:
pass
self.assertEquals(lst1, lst2)
del lst2[:]
for i in iter(IterableCounter(20).next, 10):
lst2.append(i)
self.assertEquals(lst1, lst2)
def testIsinstance(self):
self.assert_(isinstance(u'hi', types.StringTypes))
self.assert_(isinstance(self, unittest.TestCase))
# I'm pretty sure it's impossible to implement this
# without replacing isinstance on 2.2 as well :(
# self.assert_(isinstance({}, dict))
def testStrip(self):
self.assertEquals(' x '.lstrip(' '), 'x ')
self.assertEquals(' x x'.lstrip(' '), 'x x')
self.assertEquals(' x '.rstrip(' '), ' x')
self.assertEquals('x x '.rstrip(' '), 'x x')
self.assertEquals('\t x '.lstrip('\t '), 'x ')
self.assertEquals(' \tx x'.lstrip('\t '), 'x x')
self.assertEquals(' x\t '.rstrip(' \t'), ' x')
self.assertEquals('x x \t'.rstrip(' \t'), 'x x')
self.assertEquals('\t x '.strip('\t '), 'x')
self.assertEquals(' \tx x'.strip('\t '), 'x x')
self.assertEquals(' x\t '.strip(' \t'), 'x')
self.assertEquals('x x \t'.strip(' \t'), 'x x')
def testNToP(self):
from twisted.python.compat import inet_ntop
f = lambda a: inet_ntop(socket.AF_INET6, a)
g = lambda a: inet_ntop(socket.AF_INET, a)
self.assertEquals('::', f('\x00' * 16))
self.assertEquals('::1', f('\x00' * 15 + '\x01'))
self.assertEquals(
'aef:b01:506:1001:ffff:9997:55:170',
f('\x0a\xef\x0b\x01\x05\x06\x10\x01\xff\xff\x99\x97\x00\x55\x01\x70'))
self.assertEquals('1.0.1.0', g('\x01\x00\x01\x00'))
self.assertEquals('170.85.170.85', g('\xaa\x55\xaa\x55'))
self.assertEquals('255.255.255.255', g('\xff\xff\xff\xff'))
self.assertEquals('100::', f('\x01' + '\x00' * 15))
self.assertEquals('100::1', f('\x01' + '\x00' * 14 + '\x01'))
def testPToN(self):
from twisted.python.compat import inet_pton
f = lambda a: inet_pton(socket.AF_INET6, a)
g = lambda a: inet_pton(socket.AF_INET, a)
self.assertEquals('\x00\x00\x00\x00', g('0.0.0.0'))
self.assertEquals('\xff\x00\xff\x00', g('255.0.255.0'))
self.assertEquals('\xaa\xaa\xaa\xaa', g('170.170.170.170'))
self.assertEquals('\x00' * 16, f('::'))
self.assertEquals('\x00' * 16, f('0::0'))
self.assertEquals('\x00\x01' + '\x00' * 14, f('1::'))
self.assertEquals(
'\x45\xef\x76\xcb\x00\x1a\x56\xef\xaf\xeb\x0b\xac\x19\x24\xae\xae',
f('45ef:76cb:1a:56ef:afeb:bac:1924:aeae'))
self.assertEquals('\x00' * 14 + '\x00\x01', f('::1'))
self.assertEquals('\x00' * 12 + '\x01\x02\x03\x04', f('::1.2.3.4'))
self.assertEquals(
'\x00\x01\x00\x02\x00\x03\x00\x04\x00\x05\x00\x06\x01\x02\x03\xff',
f('1:2:3:4:5:6:1.2.3.255'))
for badaddr in ['1:2:3:4:5:6:7:8:', ':1:2:3:4:5:6:7:8', '1::2::3',
'1:::3', ':::', '1:2', '::1.2', '1.2.3.4::',
'abcd:1.2.3.4:abcd:abcd:abcd:abcd:abcd',
'1234:1.2.3.4:1234:1234:1234:1234:1234:1234',
'1.2.3.4']:
self.assertRaises(ValueError, f, badaddr)
def test_set(self):
"""
L{set} should behave like the expected set interface.
"""
a = set()
a.add('b')
a.add('c')
a.add('a')
b = list(a)
b.sort()
self.assertEquals(b, ['a', 'b', 'c'])
a.remove('b')
b = list(a)
b.sort()
self.assertEquals(b, ['a', 'c'])
a.discard('d')
b = set(['r', 's'])
d = a.union(b)
b = list(d)
b.sort()
self.assertEquals(b, ['a', 'c', 'r', 's'])
def test_frozenset(self):
"""
L{frozenset} should behave like the expected frozenset interface.
"""
a = frozenset(['a', 'b'])
self.assertRaises(AttributeError, getattr, a, "add")
self.assertEquals(list(a), ['a', 'b'])
b = frozenset(['r', 's'])
d = a.union(b)
b = list(d)
b.sort()
self.assertEquals(b, ['a', 'b', 'r', 's'])
def test_reduce(self):
"""
L{reduce} should behave like the builtin reduce.
"""
self.assertEquals(15, reduce(lambda x, y: x + y, [1, 2, 3, 4, 5]))
self.assertEquals(16, reduce(lambda x, y: x + y, [1, 2, 3, 4, 5], 1))
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