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Issue #25914: Fixed and simplified OrderedDict.__sizeof__.

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This commit is contained in:
Serhiy Storchaka 2015-12-22 08:16:18 +02:00
parent 5af856404a
commit 0ce7a3a34c
5 changed files with 45 additions and 25 deletions
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32
Lib/test/test_ordered_dict.py
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@ -2,6 +2,7 @@ import contextlib
import copy
import pickle
from random import randrange, shuffle
import struct
import sys
import unittest
from collections.abc import MutableMapping
@ -596,6 +597,37 @@ class CPythonOrderedDictTests(OrderedDictTests, unittest.TestCase):
module = c_coll
OrderedDict = c_coll.OrderedDict
check_sizeof = support.check_sizeof
@support.cpython_only
def test_sizeof_exact(self):
OrderedDict = self.OrderedDict
calcsize = struct.calcsize
size = support.calcobjsize
check = self.check_sizeof
basicsize = size('n2P' + '3PnPn2P') + calcsize('2nPn')
entrysize = calcsize('n2P') + calcsize('P')
nodesize = calcsize('Pn2P')
od = OrderedDict()
check(od, basicsize + 8*entrysize)
od.x = 1
check(od, basicsize + 8*entrysize)
od.update([(i, i) for i in range(3)])
check(od, basicsize + 8*entrysize + 3*nodesize)
od.update([(i, i) for i in range(3, 10)])
check(od, basicsize + 16*entrysize + 10*nodesize)
check(od.keys(), size('P'))
check(od.items(), size('P'))
check(od.values(), size('P'))
itersize = size('iP2n2P')
check(iter(od), itersize)
check(iter(od.keys()), itersize)
check(iter(od.items()), itersize)
check(iter(od.values()), itersize)
def test_key_change_during_iteration(self):
OrderedDict = self.OrderedDict