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Issue #15467: Move helpers for __sizeof__ tests into test_support. 

Patch by Serhiy Storchaka.
This commit is contained in:
Martin v. Löwis 2012-07-29 16:33:05 +02:00
parent 90bc2dbcce
commit 33f799725c
4 changed files with 124 additions and 148 deletions
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28
Lib/test/support.py
View File

@ -23,6 +23,9 @@ import time
import sysconfig import sysconfig
import fnmatch import fnmatch
import logging.handlers import logging.handlers
import struct
import tempfile
import _testcapi
try: try:
import _thread, threading import _thread, threading
@ -984,6 +987,31 @@ def python_is_optimized():
return final_opt and final_opt != '-O0' return final_opt and final_opt != '-O0'
_header = '2P'
if hasattr(sys, "gettotalrefcount"):
_header = '2P' + _header
_vheader = _header + 'P'
def calcobjsize(fmt):
return struct.calcsize(_header + fmt + '0P')
def calcvobjsize(fmt):
return struct.calcsize(_vheader + fmt + '0P')
_TPFLAGS_HAVE_GC = 1<<14
_TPFLAGS_HEAPTYPE = 1<<9
def check_sizeof(test, o, size):
result = sys.getsizeof(o)
# add GC header size
if ((type(o) == type) and (o.__flags__ & _TPFLAGS_HEAPTYPE) or\
((type(o) != type) and (type(o).__flags__ & _TPFLAGS_HAVE_GC))):
size += _testcapi.SIZEOF_PYGC_HEAD
msg = 'wrong size for %s: got %d, expected %d' \
% (type(o), result, size)
test.assertEqual(result, size, msg)
#======================================================================= #=======================================================================
# Decorator for running a function in a different locale, correctly resetting # Decorator for running a function in a different locale, correctly resetting
# it afterwards. # it afterwards.

39
Lib/test/test_struct.py
View File

@ -3,7 +3,7 @@ import unittest
import struct import struct
import sys import sys
from test.support import run_unittest, cpython_only from test import support
ISBIGENDIAN = sys.byteorder == "big" ISBIGENDIAN = sys.byteorder == "big"
IS32BIT = sys.maxsize == 0x7fffffff IS32BIT = sys.maxsize == 0x7fffffff
@ -30,32 +30,6 @@ def bigendian_to_native(value):
return string_reverse(value) return string_reverse(value)
class StructTest(unittest.TestCase): class StructTest(unittest.TestCase):
def setUp(self):
# due to missing size_t information from struct, it is assumed that
# sizeof(Py_ssize_t) = sizeof(void*)
self.header = 'PP'
if hasattr(sys, "gettotalrefcount"):
self.header += '2P'
def check_sizeof(self, format_str, number_of_codes):
def size(fmt):
"""Wrapper around struct.calcsize which enforces the alignment
of the end of a structure to the alignment requirement of pointer.
Note: This wrapper should only be used if a pointer member is
included and no member with a size larger than a pointer exists.
"""
return struct.calcsize(fmt + '0P')
struct_obj = struct.Struct(format_str)
# The size of 'PyStructObject'
totalsize = size(self.header + '5P')
# The size taken up by the 'formatcode' dynamic array
totalsize += size('3P') * (number_of_codes + 1)
result = sys.getsizeof(struct_obj)
msg = 'wrong size for %s: got %d, expected %d' \
% (type(struct_obj), result, totalsize)
self.assertEqual(result, totalsize, msg)
def test_isbigendian(self): def test_isbigendian(self):
self.assertEqual((struct.pack('=i', 1)[0] == 0), ISBIGENDIAN) self.assertEqual((struct.pack('=i', 1)[0] == 0), ISBIGENDIAN)
@ -583,7 +557,14 @@ class StructTest(unittest.TestCase):
s = struct.Struct('i') s = struct.Struct('i')
s.__init__('ii') s.__init__('ii')
@cpython_only def check_sizeof(self, format_str, number_of_codes):
# The size of 'PyStructObject'
totalsize = support.calcobjsize('5P')
# The size taken up by the 'formatcode' dynamic array
totalsize += struct.calcsize('3P') * (number_of_codes + 1)
support.check_sizeof(self, struct.Struct(format_str), totalsize)
@support.cpython_only
def test__sizeof__(self): def test__sizeof__(self):
for code in integer_codes: for code in integer_codes:
self.check_sizeof(code, 1) self.check_sizeof(code, 1)
@ -598,7 +579,7 @@ class StructTest(unittest.TestCase):
self.check_sizeof('0c', 0) self.check_sizeof('0c', 0)
def test_main(): def test_main():
run_unittest(StructTest) support.run_unittest(StructTest)
if __name__ == '__main__': if __name__ == '__main__':
test_main() test_main()

202
Lib/test/test_sys.py
View File

@ -570,22 +570,8 @@ class SysModuleTest(unittest.TestCase):
class SizeofTest(unittest.TestCase): class SizeofTest(unittest.TestCase):
TPFLAGS_HAVE_GC = 1<<14
TPFLAGS_HEAPTYPE = 1<<9
def setUp(self): def setUp(self):
self.c = len(struct.pack('c', b' ')) self.P = struct.calcsize('P')
self.H = len(struct.pack('H', 0))
self.i = len(struct.pack('i', 0))
self.l = len(struct.pack('l', 0))
self.P = len(struct.pack('P', 0))
# due to missing size_t information from struct, it is assumed that
# sizeof(Py_ssize_t) = sizeof(void*)
self.header = 'PP'
self.vheader = self.header + 'P'
if hasattr(sys, "gettotalrefcount"):
self.header += '2P'
self.vheader += '2P'
self.longdigit = sys.int_info.sizeof_digit self.longdigit = sys.int_info.sizeof_digit
import _testcapi import _testcapi
self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
@ -595,123 +581,102 @@ class SizeofTest(unittest.TestCase):
self.file.close() self.file.close()
test.support.unlink(test.support.TESTFN) test.support.unlink(test.support.TESTFN)
def check_sizeof(self, o, size): check_sizeof = test.support.check_sizeof
result = sys.getsizeof(o)
# add GC header size
if ((type(o) == type) and (o.__flags__ & self.TPFLAGS_HEAPTYPE) or\
((type(o) != type) and (type(o).__flags__ & self.TPFLAGS_HAVE_GC))):
size += self.gc_headsize
msg = 'wrong size for %s: got %d, expected %d' \
% (type(o), result, size)
self.assertEqual(result, size, msg)
def calcsize(self, fmt):
"""Wrapper around struct.calcsize which enforces the alignment of the
end of a structure to the alignment requirement of pointer.
Note: This wrapper should only be used if a pointer member is included
and no member with a size larger than a pointer exists.
"""
return struct.calcsize(fmt + '0P')
def test_gc_head_size(self): def test_gc_head_size(self):
# Check that the gc header size is added to objects tracked by the gc. # Check that the gc header size is added to objects tracked by the gc.
h = self.header vsize = test.support.calcvobjsize
vh = self.vheader
size = self.calcsize
gc_header_size = self.gc_headsize gc_header_size = self.gc_headsize
# bool objects are not gc tracked # bool objects are not gc tracked
self.assertEqual(sys.getsizeof(True), size(vh) + self.longdigit) self.assertEqual(sys.getsizeof(True), vsize('') + self.longdigit)
# but lists are # but lists are
self.assertEqual(sys.getsizeof([]), size(vh + 'PP') + gc_header_size) self.assertEqual(sys.getsizeof([]), vsize('PP') + gc_header_size)
def test_default(self): def test_default(self):
h = self.header vsize = test.support.calcvobjsize
vh = self.vheader self.assertEqual(sys.getsizeof(True), vsize('') + self.longdigit)
size = self.calcsize self.assertEqual(sys.getsizeof(True, -1), vsize('') + self.longdigit)
self.assertEqual(sys.getsizeof(True), size(vh) + self.longdigit)
self.assertEqual(sys.getsizeof(True, -1), size(vh) + self.longdigit)
def test_objecttypes(self): def test_objecttypes(self):
# check all types defined in Objects/ # check all types defined in Objects/
h = self.header size = test.support.calcobjsize
vh = self.vheader vsize = test.support.calcvobjsize
size = self.calcsize
check = self.check_sizeof check = self.check_sizeof
# bool # bool
check(True, size(vh) + self.longdigit) check(True, vsize('') + self.longdigit)
# buffer # buffer
# XXX # XXX
# builtin_function_or_method # builtin_function_or_method
check(len, size(h + '3P')) check(len, size('3P')) # XXX check layout
# bytearray # bytearray
samples = [b'', b'u'*100000] samples = [b'', b'u'*100000]
for sample in samples: for sample in samples:
x = bytearray(sample) x = bytearray(sample)
check(x, size(vh + 'iPP') + x.__alloc__() * self.c) check(x, vsize('iPP') + x.__alloc__())
# bytearray_iterator # bytearray_iterator
check(iter(bytearray()), size(h + 'PP')) check(iter(bytearray()), size('PP'))
# cell # cell
def get_cell(): def get_cell():
x = 42 x = 42
def inner(): def inner():
return x return x
return inner return inner
check(get_cell().__closure__[0], size(h + 'P')) check(get_cell().__closure__[0], size('P'))
# code # code
check(get_cell().__code__, size(h + '5i8Pi3P')) check(get_cell().__code__, size('5i8Pi3P'))
# complex # complex
check(complex(0,1), size(h + '2d')) check(complex(0,1), size('2d'))
# method_descriptor (descriptor object) # method_descriptor (descriptor object)
check(str.lower, size(h + '2PP')) check(str.lower, size('2PP'))
# classmethod_descriptor (descriptor object) # classmethod_descriptor (descriptor object)
# XXX # XXX
# member_descriptor (descriptor object) # member_descriptor (descriptor object)
import datetime import datetime
check(datetime.timedelta.days, size(h + '2PP')) check(datetime.timedelta.days, size('2PP'))
# getset_descriptor (descriptor object) # getset_descriptor (descriptor object)
import collections import collections
check(collections.defaultdict.default_factory, size(h + '2PP')) check(collections.defaultdict.default_factory, size('2PP'))
# wrapper_descriptor (descriptor object) # wrapper_descriptor (descriptor object)
check(int.__add__, size(h + '2P2P')) check(int.__add__, size('2P2P'))
# method-wrapper (descriptor object) # method-wrapper (descriptor object)
check({}.__iter__, size(h + '2P')) check({}.__iter__, size('2P'))
# dict # dict
check({}, size(h + '3P2P' + 8*'P2P')) check({}, size('3P2P' + 8*'P2P'))
longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8} longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8}
check(longdict, size(h + '3P2P' + 8*'P2P') + 16*size('P2P')) check(longdict, size('3P2P' + 8*'P2P') + 16*struct.calcsize('P2P'))
# dictionary-keyiterator # dictionary-keyiterator
check({}.keys(), size(h + 'P')) check({}.keys(), size('P'))
# dictionary-valueiterator # dictionary-valueiterator
check({}.values(), size(h + 'P')) check({}.values(), size('P'))
# dictionary-itemiterator # dictionary-itemiterator
check({}.items(), size(h + 'P')) check({}.items(), size('P'))
# dictionary iterator
check(iter({}), size('P2PPP'))
# dictproxy # dictproxy
class C(object): pass class C(object): pass
check(C.__dict__, size(h + 'P')) check(C.__dict__, size('P'))
# BaseException # BaseException
check(BaseException(), size(h + '5P')) check(BaseException(), size('5P'))
# UnicodeEncodeError # UnicodeEncodeError
check(UnicodeEncodeError("", "", 0, 0, ""), size(h + '5P 2P2PP')) check(UnicodeEncodeError("", "", 0, 0, ""), size('5P 2P2PP'))
# UnicodeDecodeError # UnicodeDecodeError
# XXX check(UnicodeDecodeError("", b"", 0, 0, ""), size('5P 2P2PP'))
# check(UnicodeDecodeError("", "", 0, 0, ""), size(h + '5P2PP'))
# UnicodeTranslateError # UnicodeTranslateError
check(UnicodeTranslateError("", 0, 1, ""), size(h + '5P 2P2PP')) check(UnicodeTranslateError("", 0, 1, ""), size('5P 2P2PP'))
# ellipses # ellipses
check(Ellipsis, size(h + '')) check(Ellipsis, size(''))
# EncodingMap # EncodingMap
import codecs, encodings.iso8859_3 import codecs, encodings.iso8859_3
x = codecs.charmap_build(encodings.iso8859_3.decoding_table) x = codecs.charmap_build(encodings.iso8859_3.decoding_table)
check(x, size(h + '32B2iB')) check(x, size('32B2iB'))
# enumerate # enumerate
check(enumerate([]), size(h + 'l3P')) check(enumerate([]), size('l3P'))
# reverse # reverse
check(reversed(''), size(h + 'PP')) check(reversed(''), size('PP'))
# float # float
check(float(0), size(h + 'd')) check(float(0), size('d'))
# sys.floatinfo # sys.floatinfo
check(sys.float_info, size(vh) + self.P * len(sys.float_info)) check(sys.float_info, vsize('') + self.P * len(sys.float_info))
# frame # frame
import inspect import inspect
CO_MAXBLOCKS = 20 CO_MAXBLOCKS = 20
@ -720,10 +685,10 @@ class SizeofTest(unittest.TestCase):
nfrees = len(x.f_code.co_freevars) nfrees = len(x.f_code.co_freevars)
extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\ extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\
ncells + nfrees - 1 ncells + nfrees - 1
check(x, size(vh + '12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P')) check(x, vsize('12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P'))
# function # function
def func(): pass def func(): pass
check(func, size(h + '11P')) check(func, size('11P'))
class c(): class c():
@staticmethod @staticmethod
def foo(): def foo():
@ -732,68 +697,68 @@ class SizeofTest(unittest.TestCase):
def bar(cls): def bar(cls):
pass pass
# staticmethod # staticmethod
check(foo, size(h + 'P')) check(foo, size('P'))
# classmethod # classmethod
check(bar, size(h + 'P')) check(bar, size('P'))
# generator # generator
def get_gen(): yield 1 def get_gen(): yield 1
check(get_gen(), size(h + 'Pi2P')) check(get_gen(), size('Pi2P'))
# iterator # iterator
check(iter('abc'), size(h + 'lP')) check(iter('abc'), size('lP'))
# callable-iterator # callable-iterator
import re import re
check(re.finditer('',''), size(h + '2P')) check(re.finditer('',''), size('2P'))
# list # list
samples = [[], [1,2,3], ['1', '2', '3']] samples = [[], [1,2,3], ['1', '2', '3']]
for sample in samples: for sample in samples:
check(sample, size(vh + 'PP') + len(sample)*self.P) check(sample, vsize('PP') + len(sample)*self.P)
# sortwrapper (list) # sortwrapper (list)
# XXX # XXX
# cmpwrapper (list) # cmpwrapper (list)
# XXX # XXX
# listiterator (list) # listiterator (list)
check(iter([]), size(h + 'lP')) check(iter([]), size('lP'))
# listreverseiterator (list) # listreverseiterator (list)
check(reversed([]), size(h + 'lP')) check(reversed([]), size('lP'))
# long # long
check(0, size(vh)) check(0, vsize(''))
check(1, size(vh) + self.longdigit) check(1, vsize('') + self.longdigit)
check(-1, size(vh) + self.longdigit) check(-1, vsize('') + self.longdigit)
PyLong_BASE = 2**sys.int_info.bits_per_digit PyLong_BASE = 2**sys.int_info.bits_per_digit
check(int(PyLong_BASE), size(vh) + 2*self.longdigit) check(int(PyLong_BASE), vsize('') + 2*self.longdigit)
check(int(PyLong_BASE**2-1), size(vh) + 2*self.longdigit) check(int(PyLong_BASE**2-1), vsize('') + 2*self.longdigit)
check(int(PyLong_BASE**2), size(vh) + 3*self.longdigit) check(int(PyLong_BASE**2), vsize('') + 3*self.longdigit)
# memory # memoryview
check(memoryview(b''), size(h + 'PP2P2i7P')) check(memoryview(b''), size('PP2P2i7P'))
# module # module
check(unittest, size(h + '3P')) check(unittest, size('3P'))
# None # None
check(None, size(h + '')) check(None, size(''))
# NotImplementedType # NotImplementedType
check(NotImplemented, size(h)) check(NotImplemented, size(''))
# object # object
check(object(), size(h + '')) check(object(), size(''))
# property (descriptor object) # property (descriptor object)
class C(object): class C(object):
def getx(self): return self.__x def getx(self): return self.__x
def setx(self, value): self.__x = value def setx(self, value): self.__x = value
def delx(self): del self.__x def delx(self): del self.__x
x = property(getx, setx, delx, "") x = property(getx, setx, delx, "")
check(x, size(h + '4Pi')) check(x, size('4Pi'))
# PyCapsule # PyCapsule
# XXX # XXX
# rangeiterator # rangeiterator
check(iter(range(1)), size(h + '4l')) check(iter(range(1)), size('4l'))
# reverse # reverse
check(reversed(''), size(h + 'PP')) check(reversed(''), size('PP'))
# range # range
check(range(1), size(h + '4P')) check(range(1), size('4P'))
check(range(66000), size(h + '4P')) check(range(66000), size('4P'))
# set # set
# frozenset # frozenset
PySet_MINSIZE = 8 PySet_MINSIZE = 8
samples = [[], range(10), range(50)] samples = [[], range(10), range(50)]
s = size(h + '3P2P' + PySet_MINSIZE*'lP' + 'lP') s = size('3P2P' + PySet_MINSIZE*'PP' + 'PP')
for sample in samples: for sample in samples:
minused = len(sample) minused = len(sample)
if minused == 0: tmp = 1 if minused == 0: tmp = 1
@ -810,18 +775,18 @@ class SizeofTest(unittest.TestCase):
check(set(sample), s + newsize*struct.calcsize('lP')) check(set(sample), s + newsize*struct.calcsize('lP'))
check(frozenset(sample), s + newsize*struct.calcsize('lP')) check(frozenset(sample), s + newsize*struct.calcsize('lP'))
# setiterator # setiterator
check(iter(set()), size(h + 'P3P')) check(iter(set()), size('P3P'))
# slice # slice
check(slice(0), size(h + '3P')) check(slice(0), size('3P'))
# super # super
check(super(int), size(h + '3P')) check(super(int), size('3P'))
# tuple # tuple
check((), size(vh)) check((), vsize(''))
check((1,2,3), size(vh) + 3*self.P) check((1,2,3), vsize('') + 3*self.P)
# type # type
# (PyTypeObject + PyNumberMethods + PyMappingMethods + # (PyTypeObject + PyNumberMethods + PyMappingMethods +
# PySequenceMethods + PyBufferProcs) # PySequenceMethods + PyBufferProcs)
s = size(vh + 'P2P15Pl4PP9PP11PI') + size('16Pi17P 3P 10P 2P 2P') s = vsize('P2P15Pl4PP9PP11PI') + struct.calcsize('16Pi17P 3P 10P 2P 2P')
check(int, s) check(int, s)
# class # class
class newstyleclass(object): pass class newstyleclass(object): pass
@ -832,39 +797,38 @@ class SizeofTest(unittest.TestCase):
# we need to test for both sizes, because we don't know if the string # we need to test for both sizes, because we don't know if the string
# has been cached # has been cached
for s in samples: for s in samples:
basicsize = size(h + 'PPPiP') + usize * (len(s) + 1) basicsize = size('PPPiP') + usize * (len(s) + 1)
check(s, basicsize) check(s, basicsize)
# weakref # weakref
import weakref import weakref
check(weakref.ref(int), size(h + '2Pl2P')) check(weakref.ref(int), size('2Pl2P'))
# weakproxy # weakproxy
# XXX # XXX
# weakcallableproxy # weakcallableproxy
check(weakref.proxy(int), size(h + '2Pl2P')) check(weakref.proxy(int), size('2Pl2P'))
def test_pythontypes(self): def test_pythontypes(self):
# check all types defined in Python/ # check all types defined in Python/
h = self.header size = test.support.calcobjsize
vh = self.vheader vsize = test.support.calcvobjsize
size = self.calcsize
check = self.check_sizeof check = self.check_sizeof
# _ast.AST # _ast.AST
import _ast import _ast
check(_ast.AST(), size(h + '')) check(_ast.AST(), size(''))
# imp.NullImporter # imp.NullImporter
import imp import imp
check(imp.NullImporter(self.file.name), size(h + '')) check(imp.NullImporter(self.file.name), size(''))
try: try:
raise TypeError raise TypeError
except TypeError: except TypeError:
tb = sys.exc_info()[2] tb = sys.exc_info()[2]
# traceback # traceback
if tb != None: if tb != None:
check(tb, size(h + '2P2i')) check(tb, size('2P2i'))
# symtable entry # symtable entry
# XXX # XXX
# sys.flags # sys.flags
check(sys.flags, size(vh) + self.P * len(sys.flags)) check(sys.flags, vsize('') + self.P * len(sys.flags))
def test_main(): def test_main():

3
Misc/NEWS
View File

@ -383,6 +383,9 @@ Extension Modules
Tests Tests
----- -----
- Issue #15467: Move helpers for __sizeof__ tests into test_support.
Patch by Serhiy Storchaka.
- Issue #15320: Make iterating the list of tests thread-safe when running - Issue #15320: Make iterating the list of tests thread-safe when running
tests in multiprocess mode. Patch by Chris Jerdonek. tests in multiprocess mode. Patch by Chris Jerdonek.