cpython/Lib/test/seq_tests.py

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"""
Tests common to tuple, list and UserList.UserList
"""
import unittest
import sys
import pickle
from test import support
from test.support import ALWAYS_EQ, NEVER_EQ
# Various iterables
# This is used for checking the constructor (here and in test_deque.py)
def iterfunc(seqn):
'Regular generator'
for i in seqn:
yield i
class Sequence:
'Sequence using __getitem__'
def __init__(self, seqn):
self.seqn = seqn
def __getitem__(self, i):
return self.seqn[i]
class IterFunc:
'Sequence using iterator protocol'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
return self
def __next__(self):
if self.i >= len(self.seqn): raise StopIteration
v = self.seqn[self.i]
self.i += 1
return v
class IterGen:
'Sequence using iterator protocol defined with a generator'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
for val in self.seqn:
yield val
class IterNextOnly:
'Missing __getitem__ and __iter__'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __next__(self):
if self.i >= len(self.seqn): raise StopIteration
v = self.seqn[self.i]
self.i += 1
return v
class IterNoNext:
'Iterator missing __next__()'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
return self
class IterGenExc:
'Test propagation of exceptions'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
return self
def __next__(self):
3 // 0
class IterFuncStop:
'Test immediate stop'
def __init__(self, seqn):
pass
def __iter__(self):
return self
def __next__(self):
raise StopIteration
from itertools import chain
def itermulti(seqn):
'Test multiple tiers of iterators'
return chain(map(lambda x:x, iterfunc(IterGen(Sequence(seqn)))))
class LyingTuple(tuple):
def __iter__(self):
yield 1
class LyingList(list):
def __iter__(self):
yield 1
class CommonTest(unittest.TestCase):
# The type to be tested
type2test = None
def test_constructors(self):
l0 = []
l1 = [0]
l2 = [0, 1]
u = self.type2test()
u0 = self.type2test(l0)
u1 = self.type2test(l1)
u2 = self.type2test(l2)
uu = self.type2test(u)
uu0 = self.type2test(u0)
uu1 = self.type2test(u1)
uu2 = self.type2test(u2)
v = self.type2test(tuple(u))
class OtherSeq:
def __init__(self, initseq):
self.__data = initseq
def __len__(self):
return len(self.__data)
def __getitem__(self, i):
return self.__data[i]
s = OtherSeq(u0)
v0 = self.type2test(s)
self.assertEqual(len(v0), len(s))
s = "this is also a sequence"
vv = self.type2test(s)
self.assertEqual(len(vv), len(s))
# Create from various iteratables
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for s in ("123", "", range(1000), ('do', 1.2), range(2000,2200,5)):
for g in (Sequence, IterFunc, IterGen,
itermulti, iterfunc):
self.assertEqual(self.type2test(g(s)), self.type2test(s))
self.assertEqual(self.type2test(IterFuncStop(s)), self.type2test())
self.assertEqual(self.type2test(c for c in "123"), self.type2test("123"))
self.assertRaises(TypeError, self.type2test, IterNextOnly(s))
self.assertRaises(TypeError, self.type2test, IterNoNext(s))
self.assertRaises(ZeroDivisionError, self.type2test, IterGenExc(s))
# Issue #23757
self.assertEqual(self.type2test(LyingTuple((2,))), self.type2test((1,)))
self.assertEqual(self.type2test(LyingList([2])), self.type2test([1]))
def test_truth(self):
self.assertFalse(self.type2test())
self.assertTrue(self.type2test([42]))
def test_getitem(self):
u = self.type2test([0, 1, 2, 3, 4])
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for i in range(len(u)):
self.assertEqual(u[i], i)
self.assertEqual(u[int(i)], i)
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for i in range(-len(u), -1):
self.assertEqual(u[i], len(u)+i)
self.assertEqual(u[int(i)], len(u)+i)
self.assertRaises(IndexError, u.__getitem__, -len(u)-1)
self.assertRaises(IndexError, u.__getitem__, len(u))
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self.assertRaises(ValueError, u.__getitem__, slice(0,10,0))
u = self.type2test()
self.assertRaises(IndexError, u.__getitem__, 0)
self.assertRaises(IndexError, u.__getitem__, -1)
self.assertRaises(TypeError, u.__getitem__)
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a = self.type2test([10, 11])
self.assertEqual(a[0], 10)
self.assertEqual(a[1], 11)
self.assertEqual(a[-2], 10)
self.assertEqual(a[-1], 11)
self.assertRaises(IndexError, a.__getitem__, -3)
self.assertRaises(IndexError, a.__getitem__, 3)
def test_getslice(self):
l = [0, 1, 2, 3, 4]
u = self.type2test(l)
self.assertEqual(u[0:0], self.type2test())
self.assertEqual(u[1:2], self.type2test([1]))
self.assertEqual(u[-2:-1], self.type2test([3]))
self.assertEqual(u[-1000:1000], u)
self.assertEqual(u[1000:-1000], self.type2test([]))
self.assertEqual(u[:], u)
self.assertEqual(u[1:None], self.type2test([1, 2, 3, 4]))
self.assertEqual(u[None:3], self.type2test([0, 1, 2]))
# Extended slices
self.assertEqual(u[::], u)
self.assertEqual(u[::2], self.type2test([0, 2, 4]))
self.assertEqual(u[1::2], self.type2test([1, 3]))
self.assertEqual(u[::-1], self.type2test([4, 3, 2, 1, 0]))
self.assertEqual(u[::-2], self.type2test([4, 2, 0]))
self.assertEqual(u[3::-2], self.type2test([3, 1]))
self.assertEqual(u[3:3:-2], self.type2test([]))
self.assertEqual(u[3:2:-2], self.type2test([3]))
self.assertEqual(u[3:1:-2], self.type2test([3]))
self.assertEqual(u[3:0:-2], self.type2test([3, 1]))
self.assertEqual(u[::-100], self.type2test([4]))
self.assertEqual(u[100:-100:], self.type2test([]))
self.assertEqual(u[-100:100:], u)
self.assertEqual(u[100:-100:-1], u[::-1])
self.assertEqual(u[-100:100:-1], self.type2test([]))
self.assertEqual(u[-100:100:2], self.type2test([0, 2, 4]))
# Test extreme cases with long ints
a = self.type2test([0,1,2,3,4])
self.assertEqual(a[ -pow(2,128): 3 ], self.type2test([0,1,2]))
self.assertEqual(a[ 3: pow(2,145) ], self.type2test([3,4]))
self.assertEqual(a[3::sys.maxsize], self.type2test([3]))
def test_contains(self):
u = self.type2test([0, 1, 2])
for i in u:
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self.assertIn(i, u)
for i in min(u)-1, max(u)+1:
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self.assertNotIn(i, u)
self.assertRaises(TypeError, u.__contains__)
def test_contains_fake(self):
# Sequences must use rich comparison against each item
# (unless "is" is true, or an earlier item answered)
# So ALWAYS_EQ must be found in all non-empty sequences.
self.assertNotIn(ALWAYS_EQ, self.type2test([]))
self.assertIn(ALWAYS_EQ, self.type2test([1]))
self.assertIn(1, self.type2test([ALWAYS_EQ]))
self.assertNotIn(NEVER_EQ, self.type2test([]))
self.assertNotIn(ALWAYS_EQ, self.type2test([NEVER_EQ]))
self.assertIn(NEVER_EQ, self.type2test([ALWAYS_EQ]))
def test_contains_order(self):
# Sequences must test in-order. If a rich comparison has side
# effects, these will be visible to tests against later members.
# In this test, the "side effect" is a short-circuiting raise.
class DoNotTestEq(Exception):
pass
class StopCompares:
def __eq__(self, other):
raise DoNotTestEq
checkfirst = self.type2test([1, StopCompares()])
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self.assertIn(1, checkfirst)
checklast = self.type2test([StopCompares(), 1])
self.assertRaises(DoNotTestEq, checklast.__contains__, 1)
def test_len(self):
self.assertEqual(len(self.type2test()), 0)
self.assertEqual(len(self.type2test([])), 0)
self.assertEqual(len(self.type2test([0])), 1)
self.assertEqual(len(self.type2test([0, 1, 2])), 3)
def test_minmax(self):
u = self.type2test([0, 1, 2])
self.assertEqual(min(u), 0)
self.assertEqual(max(u), 2)
def test_addmul(self):
u1 = self.type2test([0])
u2 = self.type2test([0, 1])
self.assertEqual(u1, u1 + self.type2test())
self.assertEqual(u1, self.type2test() + u1)
self.assertEqual(u1 + self.type2test([1]), u2)
self.assertEqual(self.type2test([-1]) + u1, self.type2test([-1, 0]))
self.assertEqual(self.type2test(), u2*0)
self.assertEqual(self.type2test(), 0*u2)
self.assertEqual(self.type2test(), u2*0)
self.assertEqual(self.type2test(), 0*u2)
self.assertEqual(u2, u2*1)
self.assertEqual(u2, 1*u2)
self.assertEqual(u2, u2*1)
self.assertEqual(u2, 1*u2)
self.assertEqual(u2+u2, u2*2)
self.assertEqual(u2+u2, 2*u2)
self.assertEqual(u2+u2, u2*2)
self.assertEqual(u2+u2, 2*u2)
self.assertEqual(u2+u2+u2, u2*3)
self.assertEqual(u2+u2+u2, 3*u2)
class subclass(self.type2test):
pass
u3 = subclass([0, 1])
self.assertEqual(u3, u3*1)
self.assertIsNot(u3, u3*1)
def test_iadd(self):
u = self.type2test([0, 1])
u += self.type2test()
self.assertEqual(u, self.type2test([0, 1]))
u += self.type2test([2, 3])
self.assertEqual(u, self.type2test([0, 1, 2, 3]))
u += self.type2test([4, 5])
self.assertEqual(u, self.type2test([0, 1, 2, 3, 4, 5]))
u = self.type2test("spam")
u += self.type2test("eggs")
self.assertEqual(u, self.type2test("spameggs"))
def test_imul(self):
u = self.type2test([0, 1])
u *= 3
self.assertEqual(u, self.type2test([0, 1, 0, 1, 0, 1]))
u *= 0
self.assertEqual(u, self.type2test([]))
def test_getitemoverwriteiter(self):
# Verify that __getitem__ overrides are not recognized by __iter__
class T(self.type2test):
def __getitem__(self, key):
return str(key) + '!!!'
self.assertEqual(next(iter(T((1,2)))), 1)
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def test_repeat(self):
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for m in range(4):
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s = tuple(range(m))
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for n in range(-3, 5):
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self.assertEqual(self.type2test(s*n), self.type2test(s)*n)
self.assertEqual(self.type2test(s)*(-4), self.type2test([]))
self.assertEqual(id(s), id(s*1))
Merged revisions 58947-59004 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r58952 | christian.heimes | 2007-11-12 10:58:08 -0800 (Mon, 12 Nov 2007) | 6 lines readline module cleanup fixed indention to tabs use Py_RETURN_NONE macro added more error checks to on_completion_display_matches_hook open question: Does PyList_SetItem(l, i, o) steal a reference to o in the case of an error? ........ r58956 | guido.van.rossum | 2007-11-12 12:06:40 -0800 (Mon, 12 Nov 2007) | 2 lines Add the test from issue 1704621 (the issue itself is already fixed here). ........ r58963 | amaury.forgeotdarc | 2007-11-13 13:54:28 -0800 (Tue, 13 Nov 2007) | 23 lines Merge from py3k branch: Correction for issue1265 (pdb bug with "with" statement). When an unfinished generator-iterator is garbage collected, PyEval_EvalFrameEx is called with a GeneratorExit exception set. This leads to funny results if the sys.settrace function itself makes use of generators. A visible effect is that the settrace function is reset to None. Another is that the eventual "finally" block of the generator is not called. It is necessary to save/restore the exception around the call to the trace function. This happens a lot with py3k: isinstance() of an ABCMeta instance runs def __instancecheck__(cls, instance): """Override for isinstance(instance, cls).""" return any(cls.__subclasscheck__(c) for c in {instance.__class__, type(instance)}) which lets an opened generator expression each time it returns True. Backport candidate, even if the case is less frequent in 2.5. ........ r58968 | georg.brandl | 2007-11-14 05:59:09 -0800 (Wed, 14 Nov 2007) | 2 lines Remove dead link from random docs. ........ r58971 | raymond.hettinger | 2007-11-14 14:56:16 -0800 (Wed, 14 Nov 2007) | 1 line Make __fields__ read-only. Suggested by Issac Morland ........ r58972 | raymond.hettinger | 2007-11-14 15:02:30 -0800 (Wed, 14 Nov 2007) | 1 line Add test for __fields__ being read-only ........ r58975 | raymond.hettinger | 2007-11-14 18:44:53 -0800 (Wed, 14 Nov 2007) | 6 lines Accept Issac Morland's suggestion for __replace__ to allow multiple replacements (suprisingly, this simplifies the signature, improves clarity, and is comparably fast). Update the docs to reflect a previous change to the function name. Add an example to the docs showing how to override the default __repr__ method. ........ r58976 | raymond.hettinger | 2007-11-14 18:55:42 -0800 (Wed, 14 Nov 2007) | 1 line Small improvement to the implementation of __replace__(). ........ r58977 | raymond.hettinger | 2007-11-14 18:58:20 -0800 (Wed, 14 Nov 2007) | 1 line Fixup example in docs. ........ r58978 | raymond.hettinger | 2007-11-14 19:16:09 -0800 (Wed, 14 Nov 2007) | 1 line Example of multiple replacements. ........ r58998 | raymond.hettinger | 2007-11-15 14:39:34 -0800 (Thu, 15 Nov 2007) | 1 line Add example for use cases requiring default values. ........ r59000 | bill.janssen | 2007-11-15 15:03:03 -0800 (Thu, 15 Nov 2007) | 1 line add the certificate for the Python SVN repository for testing SSL ........ r59004 | guido.van.rossum | 2007-11-15 16:24:44 -0800 (Thu, 15 Nov 2007) | 8 lines A patch from issue 1378 by roudkerk: Currently on Windows set_error() make use of a large array which maps socket error numbers to error messages. This patch removes that array and just lets PyErr_SetExcFromWindowsErr() generate the message by using the Win32 function FormatMessage(). ........
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def test_bigrepeat(self):
if sys.maxsize <= 2147483647:
x = self.type2test([0])
x *= 2**16
self.assertRaises(MemoryError, x.__mul__, 2**16)
if hasattr(x, '__imul__'):
self.assertRaises(MemoryError, x.__imul__, 2**16)
Merged revisions 58947-59004 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r58952 | christian.heimes | 2007-11-12 10:58:08 -0800 (Mon, 12 Nov 2007) | 6 lines readline module cleanup fixed indention to tabs use Py_RETURN_NONE macro added more error checks to on_completion_display_matches_hook open question: Does PyList_SetItem(l, i, o) steal a reference to o in the case of an error? ........ r58956 | guido.van.rossum | 2007-11-12 12:06:40 -0800 (Mon, 12 Nov 2007) | 2 lines Add the test from issue 1704621 (the issue itself is already fixed here). ........ r58963 | amaury.forgeotdarc | 2007-11-13 13:54:28 -0800 (Tue, 13 Nov 2007) | 23 lines Merge from py3k branch: Correction for issue1265 (pdb bug with "with" statement). When an unfinished generator-iterator is garbage collected, PyEval_EvalFrameEx is called with a GeneratorExit exception set. This leads to funny results if the sys.settrace function itself makes use of generators. A visible effect is that the settrace function is reset to None. Another is that the eventual "finally" block of the generator is not called. It is necessary to save/restore the exception around the call to the trace function. This happens a lot with py3k: isinstance() of an ABCMeta instance runs def __instancecheck__(cls, instance): """Override for isinstance(instance, cls).""" return any(cls.__subclasscheck__(c) for c in {instance.__class__, type(instance)}) which lets an opened generator expression each time it returns True. Backport candidate, even if the case is less frequent in 2.5. ........ r58968 | georg.brandl | 2007-11-14 05:59:09 -0800 (Wed, 14 Nov 2007) | 2 lines Remove dead link from random docs. ........ r58971 | raymond.hettinger | 2007-11-14 14:56:16 -0800 (Wed, 14 Nov 2007) | 1 line Make __fields__ read-only. Suggested by Issac Morland ........ r58972 | raymond.hettinger | 2007-11-14 15:02:30 -0800 (Wed, 14 Nov 2007) | 1 line Add test for __fields__ being read-only ........ r58975 | raymond.hettinger | 2007-11-14 18:44:53 -0800 (Wed, 14 Nov 2007) | 6 lines Accept Issac Morland's suggestion for __replace__ to allow multiple replacements (suprisingly, this simplifies the signature, improves clarity, and is comparably fast). Update the docs to reflect a previous change to the function name. Add an example to the docs showing how to override the default __repr__ method. ........ r58976 | raymond.hettinger | 2007-11-14 18:55:42 -0800 (Wed, 14 Nov 2007) | 1 line Small improvement to the implementation of __replace__(). ........ r58977 | raymond.hettinger | 2007-11-14 18:58:20 -0800 (Wed, 14 Nov 2007) | 1 line Fixup example in docs. ........ r58978 | raymond.hettinger | 2007-11-14 19:16:09 -0800 (Wed, 14 Nov 2007) | 1 line Example of multiple replacements. ........ r58998 | raymond.hettinger | 2007-11-15 14:39:34 -0800 (Thu, 15 Nov 2007) | 1 line Add example for use cases requiring default values. ........ r59000 | bill.janssen | 2007-11-15 15:03:03 -0800 (Thu, 15 Nov 2007) | 1 line add the certificate for the Python SVN repository for testing SSL ........ r59004 | guido.van.rossum | 2007-11-15 16:24:44 -0800 (Thu, 15 Nov 2007) | 8 lines A patch from issue 1378 by roudkerk: Currently on Windows set_error() make use of a large array which maps socket error numbers to error messages. This patch removes that array and just lets PyErr_SetExcFromWindowsErr() generate the message by using the Win32 function FormatMessage(). ........
2007-11-15 20:35:22 -04:00
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def test_subscript(self):
a = self.type2test([10, 11])
self.assertEqual(a.__getitem__(0), 10)
self.assertEqual(a.__getitem__(1), 11)
self.assertEqual(a.__getitem__(-2), 10)
self.assertEqual(a.__getitem__(-1), 11)
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self.assertRaises(IndexError, a.__getitem__, -3)
self.assertRaises(IndexError, a.__getitem__, 3)
self.assertEqual(a.__getitem__(slice(0,1)), self.type2test([10]))
self.assertEqual(a.__getitem__(slice(1,2)), self.type2test([11]))
self.assertEqual(a.__getitem__(slice(0,2)), self.type2test([10, 11]))
self.assertEqual(a.__getitem__(slice(0,3)), self.type2test([10, 11]))
self.assertEqual(a.__getitem__(slice(3,5)), self.type2test([]))
self.assertRaises(ValueError, a.__getitem__, slice(0, 10, 0))
self.assertRaises(TypeError, a.__getitem__, 'x')
def test_count(self):
a = self.type2test([0, 1, 2])*3
self.assertEqual(a.count(0), 3)
self.assertEqual(a.count(1), 3)
self.assertEqual(a.count(3), 0)
self.assertEqual(a.count(ALWAYS_EQ), 9)
self.assertEqual(self.type2test([ALWAYS_EQ, ALWAYS_EQ]).count(1), 2)
self.assertEqual(self.type2test([ALWAYS_EQ, ALWAYS_EQ]).count(NEVER_EQ), 2)
self.assertEqual(self.type2test([NEVER_EQ, NEVER_EQ]).count(ALWAYS_EQ), 0)
self.assertRaises(TypeError, a.count)
class BadExc(Exception):
pass
class BadCmp:
def __eq__(self, other):
if other == 2:
raise BadExc()
return False
self.assertRaises(BadExc, a.count, BadCmp())
def test_index(self):
u = self.type2test([0, 1])
self.assertEqual(u.index(0), 0)
self.assertEqual(u.index(1), 1)
self.assertRaises(ValueError, u.index, 2)
u = self.type2test([-2, -1, 0, 0, 1, 2])
self.assertEqual(u.count(0), 2)
self.assertEqual(u.index(0), 2)
self.assertEqual(u.index(0, 2), 2)
self.assertEqual(u.index(-2, -10), 0)
self.assertEqual(u.index(0, 3), 3)
self.assertEqual(u.index(0, 3, 4), 3)
self.assertRaises(ValueError, u.index, 2, 0, -10)
self.assertEqual(u.index(ALWAYS_EQ), 0)
self.assertEqual(self.type2test([ALWAYS_EQ, ALWAYS_EQ]).index(1), 0)
self.assertEqual(self.type2test([ALWAYS_EQ, ALWAYS_EQ]).index(NEVER_EQ), 0)
self.assertRaises(ValueError, self.type2test([NEVER_EQ, NEVER_EQ]).index, ALWAYS_EQ)
self.assertRaises(TypeError, u.index)
class BadExc(Exception):
pass
class BadCmp:
def __eq__(self, other):
if other == 2:
raise BadExc()
return False
a = self.type2test([0, 1, 2, 3])
self.assertRaises(BadExc, a.index, BadCmp())
a = self.type2test([-2, -1, 0, 0, 1, 2])
self.assertEqual(a.index(0), 2)
self.assertEqual(a.index(0, 2), 2)
self.assertEqual(a.index(0, -4), 2)
self.assertEqual(a.index(-2, -10), 0)
self.assertEqual(a.index(0, 3), 3)
self.assertEqual(a.index(0, -3), 3)
self.assertEqual(a.index(0, 3, 4), 3)
self.assertEqual(a.index(0, -3, -2), 3)
self.assertEqual(a.index(0, -4*sys.maxsize, 4*sys.maxsize), 2)
self.assertRaises(ValueError, a.index, 0, 4*sys.maxsize,-4*sys.maxsize)
self.assertRaises(ValueError, a.index, 2, 0, -10)
def test_pickle(self):
lst = self.type2test([4, 5, 6, 7])
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
lst2 = pickle.loads(pickle.dumps(lst, proto))
self.assertEqual(lst2, lst)
self.assertNotEqual(id(lst2), id(lst))
def test_free_after_iterating(self):
support.check_free_after_iterating(self, iter, self.type2test)
support.check_free_after_iterating(self, reversed, self.type2test)