/usr/lib/python2.7/test/pickletester.py is in libpython2.7-testsuite 2.7.11-7ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 | # -*- coding: utf-8 -*-
import unittest
import pickle
import cPickle
import StringIO
import cStringIO
import pickletools
import copy_reg
import sys
from test import test_support as support
from test.test_support import TestFailed, verbose, have_unicode, TESTFN
try:
from test.test_support import _2G, _1M, precisionbigmemtest
except ImportError:
# this import might fail when run on older Python versions by test_xpickle
_2G = _1M = 0
def precisionbigmemtest(*args, **kwargs):
return lambda self: None
# Tests that try a number of pickle protocols should have a
# for proto in protocols:
# kind of outer loop.
assert pickle.HIGHEST_PROTOCOL == cPickle.HIGHEST_PROTOCOL == 2
protocols = range(pickle.HIGHEST_PROTOCOL + 1)
# Copy of test.test_support.run_with_locale. This is needed to support Python
# 2.4, which didn't include it. This is all to support test_xpickle, which
# bounces pickled objects through older Python versions to test backwards
# compatibility.
def run_with_locale(catstr, *locales):
def decorator(func):
def inner(*args, **kwds):
try:
import locale
category = getattr(locale, catstr)
orig_locale = locale.setlocale(category)
except AttributeError:
# if the test author gives us an invalid category string
raise
except:
# cannot retrieve original locale, so do nothing
locale = orig_locale = None
else:
for loc in locales:
try:
locale.setlocale(category, loc)
break
except:
pass
# now run the function, resetting the locale on exceptions
try:
return func(*args, **kwds)
finally:
if locale and orig_locale:
locale.setlocale(category, orig_locale)
inner.func_name = func.func_name
inner.__doc__ = func.__doc__
return inner
return decorator
def no_tracing(func):
"""Decorator to temporarily turn off tracing for the duration of a test."""
if not hasattr(sys, 'gettrace'):
return func
else:
def wrapper(*args, **kwargs):
original_trace = sys.gettrace()
try:
sys.settrace(None)
return func(*args, **kwargs)
finally:
sys.settrace(original_trace)
wrapper.__name__ = func.__name__
return wrapper
# Return True if opcode code appears in the pickle, else False.
def opcode_in_pickle(code, pickle):
for op, dummy, dummy in pickletools.genops(pickle):
if op.code == code:
return True
return False
# Return the number of times opcode code appears in pickle.
def count_opcode(code, pickle):
n = 0
for op, dummy, dummy in pickletools.genops(pickle):
if op.code == code:
n += 1
return n
class UnseekableIO(StringIO.StringIO):
def peek(self, *args):
raise NotImplementedError
def seek(self, *args):
raise NotImplementedError
def tell(self):
raise NotImplementedError
# We can't very well test the extension registry without putting known stuff
# in it, but we have to be careful to restore its original state. Code
# should do this:
#
# e = ExtensionSaver(extension_code)
# try:
# fiddle w/ the extension registry's stuff for extension_code
# finally:
# e.restore()
class ExtensionSaver:
# Remember current registration for code (if any), and remove it (if
# there is one).
def __init__(self, code):
self.code = code
if code in copy_reg._inverted_registry:
self.pair = copy_reg._inverted_registry[code]
copy_reg.remove_extension(self.pair[0], self.pair[1], code)
else:
self.pair = None
# Restore previous registration for code.
def restore(self):
code = self.code
curpair = copy_reg._inverted_registry.get(code)
if curpair is not None:
copy_reg.remove_extension(curpair[0], curpair[1], code)
pair = self.pair
if pair is not None:
copy_reg.add_extension(pair[0], pair[1], code)
class C:
def __cmp__(self, other):
return cmp(self.__dict__, other.__dict__)
class D(C):
def __init__(self, arg):
pass
class E(C):
def __getinitargs__(self):
return ()
class H(object):
pass
# Hashable mutable key
class K(object):
def __init__(self, value):
self.value = value
def __reduce__(self):
# Shouldn't support the recursion itself
return K, (self.value,)
import __main__
__main__.C = C
C.__module__ = "__main__"
__main__.D = D
D.__module__ = "__main__"
__main__.E = E
E.__module__ = "__main__"
__main__.H = H
H.__module__ = "__main__"
__main__.K = K
K.__module__ = "__main__"
class myint(int):
def __init__(self, x):
self.str = str(x)
class initarg(C):
def __init__(self, a, b):
self.a = a
self.b = b
def __getinitargs__(self):
return self.a, self.b
class metaclass(type):
pass
class use_metaclass(object):
__metaclass__ = metaclass
class pickling_metaclass(type):
def __eq__(self, other):
return (type(self) == type(other) and
self.reduce_args == other.reduce_args)
def __reduce__(self):
return (create_dynamic_class, self.reduce_args)
__hash__ = None
def create_dynamic_class(name, bases):
result = pickling_metaclass(name, bases, dict())
result.reduce_args = (name, bases)
return result
# DATA0 .. DATA2 are the pickles we expect under the various protocols, for
# the object returned by create_data().
# break into multiple strings to avoid confusing font-lock-mode
DATA0 = """(lp1
I0
aL1L
aF2
ac__builtin__
complex
p2
""" + \
"""(F3
F0
tRp3
aI1
aI-1
aI255
aI-255
aI-256
aI65535
aI-65535
aI-65536
aI2147483647
aI-2147483647
aI-2147483648
a""" + \
"""(S'abc'
p4
g4
""" + \
"""(i__main__
C
p5
""" + \
"""(dp6
S'foo'
p7
I1
sS'bar'
p8
I2
sbg5
tp9
ag9
aI5
a.
"""
# Disassembly of DATA0.
DATA0_DIS = """\
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 1
5: I INT 0
8: a APPEND
9: L LONG 1L
13: a APPEND
14: F FLOAT 2.0
17: a APPEND
18: c GLOBAL '__builtin__ complex'
39: p PUT 2
42: ( MARK
43: F FLOAT 3.0
46: F FLOAT 0.0
49: t TUPLE (MARK at 42)
50: R REDUCE
51: p PUT 3
54: a APPEND
55: I INT 1
58: a APPEND
59: I INT -1
63: a APPEND
64: I INT 255
69: a APPEND
70: I INT -255
76: a APPEND
77: I INT -256
83: a APPEND
84: I INT 65535
91: a APPEND
92: I INT -65535
100: a APPEND
101: I INT -65536
109: a APPEND
110: I INT 2147483647
122: a APPEND
123: I INT -2147483647
136: a APPEND
137: I INT -2147483648
150: a APPEND
151: ( MARK
152: S STRING 'abc'
159: p PUT 4
162: g GET 4
165: ( MARK
166: i INST '__main__ C' (MARK at 165)
178: p PUT 5
181: ( MARK
182: d DICT (MARK at 181)
183: p PUT 6
186: S STRING 'foo'
193: p PUT 7
196: I INT 1
199: s SETITEM
200: S STRING 'bar'
207: p PUT 8
210: I INT 2
213: s SETITEM
214: b BUILD
215: g GET 5
218: t TUPLE (MARK at 151)
219: p PUT 9
222: a APPEND
223: g GET 9
226: a APPEND
227: I INT 5
230: a APPEND
231: . STOP
highest protocol among opcodes = 0
"""
DATA1 = (']q\x01(K\x00L1L\nG@\x00\x00\x00\x00\x00\x00\x00'
'c__builtin__\ncomplex\nq\x02(G@\x08\x00\x00\x00\x00\x00'
'\x00G\x00\x00\x00\x00\x00\x00\x00\x00tRq\x03K\x01J\xff\xff'
'\xff\xffK\xffJ\x01\xff\xff\xffJ\x00\xff\xff\xffM\xff\xff'
'J\x01\x00\xff\xffJ\x00\x00\xff\xffJ\xff\xff\xff\x7fJ\x01\x00'
'\x00\x80J\x00\x00\x00\x80(U\x03abcq\x04h\x04(c__main__\n'
'C\nq\x05oq\x06}q\x07(U\x03fooq\x08K\x01U\x03barq\tK\x02ubh'
'\x06tq\nh\nK\x05e.'
)
# Disassembly of DATA1.
DATA1_DIS = """\
0: ] EMPTY_LIST
1: q BINPUT 1
3: ( MARK
4: K BININT1 0
6: L LONG 1L
10: G BINFLOAT 2.0
19: c GLOBAL '__builtin__ complex'
40: q BINPUT 2
42: ( MARK
43: G BINFLOAT 3.0
52: G BINFLOAT 0.0
61: t TUPLE (MARK at 42)
62: R REDUCE
63: q BINPUT 3
65: K BININT1 1
67: J BININT -1
72: K BININT1 255
74: J BININT -255
79: J BININT -256
84: M BININT2 65535
87: J BININT -65535
92: J BININT -65536
97: J BININT 2147483647
102: J BININT -2147483647
107: J BININT -2147483648
112: ( MARK
113: U SHORT_BINSTRING 'abc'
118: q BINPUT 4
120: h BINGET 4
122: ( MARK
123: c GLOBAL '__main__ C'
135: q BINPUT 5
137: o OBJ (MARK at 122)
138: q BINPUT 6
140: } EMPTY_DICT
141: q BINPUT 7
143: ( MARK
144: U SHORT_BINSTRING 'foo'
149: q BINPUT 8
151: K BININT1 1
153: U SHORT_BINSTRING 'bar'
158: q BINPUT 9
160: K BININT1 2
162: u SETITEMS (MARK at 143)
163: b BUILD
164: h BINGET 6
166: t TUPLE (MARK at 112)
167: q BINPUT 10
169: h BINGET 10
171: K BININT1 5
173: e APPENDS (MARK at 3)
174: . STOP
highest protocol among opcodes = 1
"""
DATA2 = ('\x80\x02]q\x01(K\x00\x8a\x01\x01G@\x00\x00\x00\x00\x00\x00\x00'
'c__builtin__\ncomplex\nq\x02G@\x08\x00\x00\x00\x00\x00\x00G\x00'
'\x00\x00\x00\x00\x00\x00\x00\x86Rq\x03K\x01J\xff\xff\xff\xffK'
'\xffJ\x01\xff\xff\xffJ\x00\xff\xff\xffM\xff\xffJ\x01\x00\xff\xff'
'J\x00\x00\xff\xffJ\xff\xff\xff\x7fJ\x01\x00\x00\x80J\x00\x00\x00'
'\x80(U\x03abcq\x04h\x04(c__main__\nC\nq\x05oq\x06}q\x07(U\x03foo'
'q\x08K\x01U\x03barq\tK\x02ubh\x06tq\nh\nK\x05e.')
# Disassembly of DATA2.
DATA2_DIS = """\
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 1
5: ( MARK
6: K BININT1 0
8: \x8a LONG1 1L
11: G BINFLOAT 2.0
20: c GLOBAL '__builtin__ complex'
41: q BINPUT 2
43: G BINFLOAT 3.0
52: G BINFLOAT 0.0
61: \x86 TUPLE2
62: R REDUCE
63: q BINPUT 3
65: K BININT1 1
67: J BININT -1
72: K BININT1 255
74: J BININT -255
79: J BININT -256
84: M BININT2 65535
87: J BININT -65535
92: J BININT -65536
97: J BININT 2147483647
102: J BININT -2147483647
107: J BININT -2147483648
112: ( MARK
113: U SHORT_BINSTRING 'abc'
118: q BINPUT 4
120: h BINGET 4
122: ( MARK
123: c GLOBAL '__main__ C'
135: q BINPUT 5
137: o OBJ (MARK at 122)
138: q BINPUT 6
140: } EMPTY_DICT
141: q BINPUT 7
143: ( MARK
144: U SHORT_BINSTRING 'foo'
149: q BINPUT 8
151: K BININT1 1
153: U SHORT_BINSTRING 'bar'
158: q BINPUT 9
160: K BININT1 2
162: u SETITEMS (MARK at 143)
163: b BUILD
164: h BINGET 6
166: t TUPLE (MARK at 112)
167: q BINPUT 10
169: h BINGET 10
171: K BININT1 5
173: e APPENDS (MARK at 5)
174: . STOP
highest protocol among opcodes = 2
"""
def create_data():
c = C()
c.foo = 1
c.bar = 2
x = [0, 1L, 2.0, 3.0+0j]
# Append some integer test cases at cPickle.c's internal size
# cutoffs.
uint1max = 0xff
uint2max = 0xffff
int4max = 0x7fffffff
x.extend([1, -1,
uint1max, -uint1max, -uint1max-1,
uint2max, -uint2max, -uint2max-1,
int4max, -int4max, -int4max-1])
y = ('abc', 'abc', c, c)
x.append(y)
x.append(y)
x.append(5)
return x
class AbstractUnpickleTests(unittest.TestCase):
# Subclass must define self.loads, self.error.
_testdata = create_data()
def assert_is_copy(self, obj, objcopy, msg=None):
"""Utility method to verify if two objects are copies of each others.
"""
if msg is None:
msg = "{!r} is not a copy of {!r}".format(obj, objcopy)
self.assertEqual(obj, objcopy, msg=msg)
self.assertIs(type(obj), type(objcopy), msg=msg)
if hasattr(obj, '__dict__'):
self.assertDictEqual(obj.__dict__, objcopy.__dict__, msg=msg)
self.assertIsNot(obj.__dict__, objcopy.__dict__, msg=msg)
if hasattr(obj, '__slots__'):
self.assertListEqual(obj.__slots__, objcopy.__slots__, msg=msg)
for slot in obj.__slots__:
self.assertEqual(
hasattr(obj, slot), hasattr(objcopy, slot), msg=msg)
self.assertEqual(getattr(obj, slot, None),
getattr(objcopy, slot, None), msg=msg)
def check_unpickling_error(self, errors, data):
try:
try:
self.loads(data)
except:
if support.verbose > 1:
exc_type, exc, tb = sys.exc_info()
print '%-32r - %s: %s' % (data, exc_type.__name__, exc)
raise
except errors:
pass
else:
try:
exc_name = errors.__name__
except AttributeError:
exc_name = str(errors)
raise self.failureException('%s not raised' % exc_name)
def test_load_from_canned_string(self):
expected = self._testdata
for canned in DATA0, DATA1, DATA2:
got = self.loads(canned)
self.assert_is_copy(expected, got)
def test_garyp(self):
self.check_unpickling_error(self.error, 'garyp')
def test_maxint64(self):
maxint64 = (1L << 63) - 1
data = 'I' + str(maxint64) + '\n.'
got = self.loads(data)
self.assertEqual(got, maxint64)
# Try too with a bogus literal.
data = 'I' + str(maxint64) + 'JUNK\n.'
self.check_unpickling_error(ValueError, data)
def test_insecure_strings(self):
insecure = ["abc", "2 + 2", # not quoted
#"'abc' + 'def'", # not a single quoted string
"'abc", # quote is not closed
"'abc\"", # open quote and close quote don't match
"'abc' ?", # junk after close quote
"'\\'", # trailing backslash
# issue #17710
"'", '"',
"' ", '" ',
'\'"', '"\'',
" ''", ' ""',
' ',
# some tests of the quoting rules
#"'abc\"\''",
#"'\\\\a\'\'\'\\\'\\\\\''",
]
for s in insecure:
buf = "S" + s + "\n."
self.check_unpickling_error(ValueError, buf)
def test_correctly_quoted_string(self):
goodpickles = [("S''\n.", ''),
('S""\n.', ''),
('S"\\n"\n.', '\n'),
("S'\\n'\n.", '\n')]
for p, expected in goodpickles:
self.assertEqual(self.loads(p), expected)
def test_load_classic_instance(self):
# See issue5180. Test loading 2.x pickles that
# contain an instance of old style class.
for X, args in [(C, ()), (D, ('x',)), (E, ())]:
xname = X.__name__.encode('ascii')
# Protocol 0 (text mode pickle):
"""
0: ( MARK
1: i INST '__main__ X' (MARK at 0)
13: p PUT 0
16: ( MARK
17: d DICT (MARK at 16)
18: p PUT 1
21: b BUILD
22: . STOP
"""
pickle0 = ("(i__main__\n"
"X\n"
"p0\n"
"(dp1\nb.").replace('X', xname)
self.assert_is_copy(X(*args), self.loads(pickle0))
# Protocol 1 (binary mode pickle)
"""
0: ( MARK
1: c GLOBAL '__main__ X'
13: q BINPUT 0
15: o OBJ (MARK at 0)
16: q BINPUT 1
18: } EMPTY_DICT
19: q BINPUT 2
21: b BUILD
22: . STOP
"""
pickle1 = ('(c__main__\n'
'X\n'
'q\x00oq\x01}q\x02b.').replace('X', xname)
self.assert_is_copy(X(*args), self.loads(pickle1))
# Protocol 2 (pickle2 = '\x80\x02' + pickle1)
"""
0: \x80 PROTO 2
2: ( MARK
3: c GLOBAL '__main__ X'
15: q BINPUT 0
17: o OBJ (MARK at 2)
18: q BINPUT 1
20: } EMPTY_DICT
21: q BINPUT 2
23: b BUILD
24: . STOP
"""
pickle2 = ('\x80\x02(c__main__\n'
'X\n'
'q\x00oq\x01}q\x02b.').replace('X', xname)
self.assert_is_copy(X(*args), self.loads(pickle2))
def test_load_str(self):
# From Python 2: pickle.dumps('a\x00\xa0', protocol=0)
self.assertEqual(self.loads("S'a\\x00\\xa0'\n."), 'a\x00\xa0')
# From Python 2: pickle.dumps('a\x00\xa0', protocol=1)
self.assertEqual(self.loads('U\x03a\x00\xa0.'), 'a\x00\xa0')
# From Python 2: pickle.dumps('a\x00\xa0', protocol=2)
self.assertEqual(self.loads('\x80\x02U\x03a\x00\xa0.'), 'a\x00\xa0')
def test_load_unicode(self):
# From Python 2: pickle.dumps(u'Ï€', protocol=0)
self.assertEqual(self.loads('V\\u03c0\n.'), u'Ï€')
# From Python 2: pickle.dumps(u'Ï€', protocol=1)
self.assertEqual(self.loads('X\x02\x00\x00\x00\xcf\x80.'), u'Ï€')
# From Python 2: pickle.dumps(u'Ï€', protocol=2)
self.assertEqual(self.loads('\x80\x02X\x02\x00\x00\x00\xcf\x80.'), u'Ï€')
def test_constants(self):
self.assertIsNone(self.loads('N.'))
self.assertIs(self.loads('\x88.'), True)
self.assertIs(self.loads('\x89.'), False)
self.assertIs(self.loads('I01\n.'), True)
self.assertIs(self.loads('I00\n.'), False)
def test_misc_get(self):
self.check_unpickling_error(self.error, 'g0\np0\n')
self.check_unpickling_error(self.error, 'h\x00q\x00')
def test_get(self):
pickled = '((lp100000\ng100000\nt.'
unpickled = self.loads(pickled)
self.assertEqual(unpickled, ([],)*2)
self.assertIs(unpickled[0], unpickled[1])
def test_binget(self):
pickled = '(]q\xffh\xfft.'
unpickled = self.loads(pickled)
self.assertEqual(unpickled, ([],)*2)
self.assertIs(unpickled[0], unpickled[1])
def test_long_binget(self):
pickled = '(]r\x00\x00\x01\x00j\x00\x00\x01\x00t.'
unpickled = self.loads(pickled)
self.assertEqual(unpickled, ([],)*2)
self.assertIs(unpickled[0], unpickled[1])
def test_dup(self):
pickled = '((l2t.'
unpickled = self.loads(pickled)
self.assertEqual(unpickled, ([],)*2)
self.assertIs(unpickled[0], unpickled[1])
def test_bad_stack(self):
badpickles = [
'.', # STOP
'0', # POP
'1', # POP_MARK
'2', # DUP
# '(2', # PyUnpickler doesn't raise
'R', # REDUCE
')R',
'a', # APPEND
'Na',
'b', # BUILD
'Nb',
'd', # DICT
'e', # APPENDS
# '(e', # PyUnpickler raises AttributeError
'i__builtin__\nlist\n', # INST
'l', # LIST
'o', # OBJ
'(o',
'p1\n', # PUT
'q\x00', # BINPUT
'r\x00\x00\x00\x00', # LONG_BINPUT
's', # SETITEM
'Ns',
'NNs',
't', # TUPLE
'u', # SETITEMS
# '(u', # PyUnpickler doesn't raise
'}(Nu',
'\x81', # NEWOBJ
')\x81',
'\x85', # TUPLE1
'\x86', # TUPLE2
'N\x86',
'\x87', # TUPLE3
'N\x87',
'NN\x87',
]
for p in badpickles:
self.check_unpickling_error(self.bad_stack_errors, p)
def test_bad_mark(self):
badpickles = [
# 'N(.', # STOP
'N(2', # DUP
'c__builtin__\nlist\n)(R', # REDUCE
'c__builtin__\nlist\n()R',
']N(a', # APPEND
# BUILD
'c__builtin__\nValueError\n)R}(b',
'c__builtin__\nValueError\n)R(}b',
'(Nd', # DICT
'N(p1\n', # PUT
'N(q\x00', # BINPUT
'N(r\x00\x00\x00\x00', # LONG_BINPUT
'}NN(s', # SETITEM
'}N(Ns',
'}(NNs',
'}((u', # SETITEMS
# NEWOBJ
'c__builtin__\nlist\n)(\x81',
'c__builtin__\nlist\n()\x81',
'N(\x85', # TUPLE1
'NN(\x86', # TUPLE2
'N(N\x86',
'NNN(\x87', # TUPLE3
'NN(N\x87',
'N(NN\x87',
]
for p in badpickles:
self.check_unpickling_error(self.bad_mark_errors, p)
def test_truncated_data(self):
self.check_unpickling_error(EOFError, '')
self.check_unpickling_error(EOFError, 'N')
badpickles = [
'F', # FLOAT
'F0.0',
'F0.00',
'G', # BINFLOAT
'G\x00\x00\x00\x00\x00\x00\x00',
'I', # INT
'I0',
'J', # BININT
'J\x00\x00\x00',
'K', # BININT1
'L', # LONG
'L0',
'L10',
'L0L',
'L10L',
'M', # BININT2
'M\x00',
# 'P', # PERSID
# 'Pabc',
'S', # STRING
"S'abc'",
'T', # BINSTRING
'T\x03\x00\x00',
'T\x03\x00\x00\x00',
'T\x03\x00\x00\x00ab',
'U', # SHORT_BINSTRING
'U\x03',
'U\x03ab',
'V', # UNICODE
'Vabc',
'X', # BINUNICODE
'X\x03\x00\x00',
'X\x03\x00\x00\x00',
'X\x03\x00\x00\x00ab',
'(c', # GLOBAL
'(c__builtin__',
'(c__builtin__\n',
'(c__builtin__\nlist',
'Ng', # GET
'Ng0',
'(i', # INST
'(i__builtin__',
'(i__builtin__\n',
'(i__builtin__\nlist',
'Nh', # BINGET
'Nj', # LONG_BINGET
'Nj\x00\x00\x00',
'Np', # PUT
'Np0',
'Nq', # BINPUT
'Nr', # LONG_BINPUT
'Nr\x00\x00\x00',
'\x80', # PROTO
'\x82', # EXT1
'\x83', # EXT2
'\x84\x01',
'\x84', # EXT4
'\x84\x01\x00\x00',
'\x8a', # LONG1
'\x8b', # LONG4
'\x8b\x00\x00\x00',
]
for p in badpickles:
self.check_unpickling_error(self.truncated_errors, p)
class AbstractPickleTests(unittest.TestCase):
# Subclass must define self.dumps, self.loads.
_testdata = AbstractUnpickleTests._testdata
def setUp(self):
pass
def test_misc(self):
# test various datatypes not tested by testdata
for proto in protocols:
x = myint(4)
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
x = (1, ())
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
x = initarg(1, x)
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
# XXX test __reduce__ protocol?
def test_roundtrip_equality(self):
expected = self._testdata
for proto in protocols:
s = self.dumps(expected, proto)
got = self.loads(s)
self.assertEqual(expected, got)
# There are gratuitous differences between pickles produced by
# pickle and cPickle, largely because cPickle starts PUT indices at
# 1 and pickle starts them at 0. See XXX comment in cPickle's put2() --
# there's a comment with an exclamation point there whose meaning
# is a mystery. cPickle also suppresses PUT for objects with a refcount
# of 1.
def dont_test_disassembly(self):
from pickletools import dis
for proto, expected in (0, DATA0_DIS), (1, DATA1_DIS):
s = self.dumps(self._testdata, proto)
filelike = cStringIO.StringIO()
dis(s, out=filelike)
got = filelike.getvalue()
self.assertEqual(expected, got)
def test_recursive_list(self):
l = []
l.append(l)
for proto in protocols:
s = self.dumps(l, proto)
x = self.loads(s)
self.assertIsInstance(x, list)
self.assertEqual(len(x), 1)
self.assertIs(x[0], x)
def test_recursive_tuple_and_list(self):
t = ([],)
t[0].append(t)
for proto in protocols:
s = self.dumps(t, proto)
x = self.loads(s)
self.assertIsInstance(x, tuple)
self.assertEqual(len(x), 1)
self.assertIsInstance(x[0], list)
self.assertEqual(len(x[0]), 1)
self.assertIs(x[0][0], x)
def test_recursive_dict(self):
d = {}
d[1] = d
for proto in protocols:
s = self.dumps(d, proto)
x = self.loads(s)
self.assertIsInstance(x, dict)
self.assertEqual(x.keys(), [1])
self.assertIs(x[1], x)
def test_recursive_dict_key(self):
d = {}
k = K(d)
d[k] = 1
for proto in protocols:
s = self.dumps(d, proto)
x = self.loads(s)
self.assertIsInstance(x, dict)
self.assertEqual(len(x.keys()), 1)
self.assertIsInstance(x.keys()[0], K)
self.assertIs(x.keys()[0].value, x)
def test_recursive_list_subclass(self):
y = MyList()
y.append(y)
s = self.dumps(y, 2)
x = self.loads(s)
self.assertIsInstance(x, MyList)
self.assertEqual(len(x), 1)
self.assertIs(x[0], x)
def test_recursive_dict_subclass(self):
d = MyDict()
d[1] = d
s = self.dumps(d, 2)
x = self.loads(s)
self.assertIsInstance(x, MyDict)
self.assertEqual(x.keys(), [1])
self.assertIs(x[1], x)
def test_recursive_dict_subclass_key(self):
d = MyDict()
k = K(d)
d[k] = 1
s = self.dumps(d, 2)
x = self.loads(s)
self.assertIsInstance(x, MyDict)
self.assertEqual(len(x.keys()), 1)
self.assertIsInstance(x.keys()[0], K)
self.assertIs(x.keys()[0].value, x)
def test_recursive_inst(self):
i = C()
i.attr = i
for proto in protocols:
s = self.dumps(i, proto)
x = self.loads(s)
self.assertIsInstance(x, C)
self.assertEqual(dir(x), dir(i))
self.assertIs(x.attr, x)
def test_recursive_multi(self):
l = []
d = {1:l}
i = C()
i.attr = d
l.append(i)
for proto in protocols:
s = self.dumps(l, proto)
x = self.loads(s)
self.assertIsInstance(x, list)
self.assertEqual(len(x), 1)
self.assertEqual(dir(x[0]), dir(i))
self.assertEqual(x[0].attr.keys(), [1])
self.assertTrue(x[0].attr[1] is x)
def check_recursive_collection_and_inst(self, factory):
h = H()
y = factory([h])
h.attr = y
for proto in protocols:
s = self.dumps(y, proto)
x = self.loads(s)
self.assertIsInstance(x, type(y))
self.assertEqual(len(x), 1)
self.assertIsInstance(list(x)[0], H)
self.assertIs(list(x)[0].attr, x)
def test_recursive_list_and_inst(self):
self.check_recursive_collection_and_inst(list)
def test_recursive_tuple_and_inst(self):
self.check_recursive_collection_and_inst(tuple)
def test_recursive_dict_and_inst(self):
self.check_recursive_collection_and_inst(dict.fromkeys)
def test_recursive_set_and_inst(self):
self.check_recursive_collection_and_inst(set)
def test_recursive_frozenset_and_inst(self):
self.check_recursive_collection_and_inst(frozenset)
def test_recursive_list_subclass_and_inst(self):
self.check_recursive_collection_and_inst(MyList)
def test_recursive_tuple_subclass_and_inst(self):
self.check_recursive_collection_and_inst(MyTuple)
def test_recursive_dict_subclass_and_inst(self):
self.check_recursive_collection_and_inst(MyDict.fromkeys)
if have_unicode:
def test_unicode(self):
endcases = [u'', u'<\\u>', u'<\\\u1234>', u'<\n>',
u'<\\>', u'<\\\U00012345>',
# surrogates
u'<\udc80>']
for proto in protocols:
for u in endcases:
p = self.dumps(u, proto)
u2 = self.loads(p)
self.assertEqual(u2, u)
def test_unicode_high_plane(self):
t = u'\U00012345'
for proto in protocols:
p = self.dumps(t, proto)
t2 = self.loads(p)
self.assertEqual(t2, t)
def test_ints(self):
import sys
for proto in protocols:
n = sys.maxint
while n:
for expected in (-n, n):
s = self.dumps(expected, proto)
n2 = self.loads(s)
self.assertEqual(expected, n2)
n = n >> 1
def test_long(self):
for proto in protocols:
# 256 bytes is where LONG4 begins.
for nbits in 1, 8, 8*254, 8*255, 8*256, 8*257:
nbase = 1L << nbits
for npos in nbase-1, nbase, nbase+1:
for n in npos, -npos:
pickle = self.dumps(n, proto)
got = self.loads(pickle)
self.assertEqual(n, got)
# Try a monster. This is quadratic-time in protos 0 & 1, so don't
# bother with those.
nbase = long("deadbeeffeedface", 16)
nbase += nbase << 1000000
for n in nbase, -nbase:
p = self.dumps(n, 2)
got = self.loads(p)
self.assertEqual(n, got)
def test_float(self):
test_values = [0.0, 4.94e-324, 1e-310, 7e-308, 6.626e-34, 0.1, 0.5,
3.14, 263.44582062374053, 6.022e23, 1e30]
test_values = test_values + [-x for x in test_values]
for proto in protocols:
for value in test_values:
pickle = self.dumps(value, proto)
got = self.loads(pickle)
self.assertEqual(value, got)
@run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
def test_float_format(self):
# make sure that floats are formatted locale independent
self.assertEqual(self.dumps(1.2)[0:3], 'F1.')
def test_reduce(self):
pass
def test_getinitargs(self):
pass
def test_metaclass(self):
a = use_metaclass()
for proto in protocols:
s = self.dumps(a, proto)
b = self.loads(s)
self.assertEqual(a.__class__, b.__class__)
def test_dynamic_class(self):
a = create_dynamic_class("my_dynamic_class", (object,))
copy_reg.pickle(pickling_metaclass, pickling_metaclass.__reduce__)
for proto in protocols:
s = self.dumps(a, proto)
b = self.loads(s)
self.assertEqual(a, b)
self.assertIs(a.__class__, b.__class__)
def test_structseq(self):
import time
import os
t = time.localtime()
for proto in protocols:
s = self.dumps(t, proto)
u = self.loads(s)
self.assertEqual(t, u)
if hasattr(os, "stat"):
t = os.stat(os.curdir)
s = self.dumps(t, proto)
u = self.loads(s)
self.assertEqual(t, u)
if hasattr(os, "statvfs"):
t = os.statvfs(os.curdir)
s = self.dumps(t, proto)
u = self.loads(s)
self.assertEqual(t, u)
# Tests for protocol 2
def test_proto(self):
build_none = pickle.NONE + pickle.STOP
for proto in protocols:
expected = build_none
if proto >= 2:
expected = pickle.PROTO + chr(proto) + expected
p = self.dumps(None, proto)
self.assertEqual(p, expected)
oob = protocols[-1] + 1 # a future protocol
badpickle = pickle.PROTO + chr(oob) + build_none
try:
self.loads(badpickle)
except ValueError, detail:
self.assertTrue(str(detail).startswith(
"unsupported pickle protocol"))
else:
self.fail("expected bad protocol number to raise ValueError")
def test_long1(self):
x = 12345678910111213141516178920L
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
self.assertEqual(opcode_in_pickle(pickle.LONG1, s), proto >= 2)
def test_long4(self):
x = 12345678910111213141516178920L << (256*8)
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
self.assertEqual(opcode_in_pickle(pickle.LONG4, s), proto >= 2)
def test_short_tuples(self):
# Map (proto, len(tuple)) to expected opcode.
expected_opcode = {(0, 0): pickle.TUPLE,
(0, 1): pickle.TUPLE,
(0, 2): pickle.TUPLE,
(0, 3): pickle.TUPLE,
(0, 4): pickle.TUPLE,
(1, 0): pickle.EMPTY_TUPLE,
(1, 1): pickle.TUPLE,
(1, 2): pickle.TUPLE,
(1, 3): pickle.TUPLE,
(1, 4): pickle.TUPLE,
(2, 0): pickle.EMPTY_TUPLE,
(2, 1): pickle.TUPLE1,
(2, 2): pickle.TUPLE2,
(2, 3): pickle.TUPLE3,
(2, 4): pickle.TUPLE,
}
a = ()
b = (1,)
c = (1, 2)
d = (1, 2, 3)
e = (1, 2, 3, 4)
for proto in protocols:
for x in a, b, c, d, e:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y, (proto, x, s, y))
expected = expected_opcode[proto, len(x)]
self.assertEqual(opcode_in_pickle(expected, s), True)
def test_singletons(self):
# Map (proto, singleton) to expected opcode.
expected_opcode = {(0, None): pickle.NONE,
(1, None): pickle.NONE,
(2, None): pickle.NONE,
(0, True): pickle.INT,
(1, True): pickle.INT,
(2, True): pickle.NEWTRUE,
(0, False): pickle.INT,
(1, False): pickle.INT,
(2, False): pickle.NEWFALSE,
}
for proto in protocols:
for x in None, False, True:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertTrue(x is y, (proto, x, s, y))
expected = expected_opcode[proto, x]
self.assertEqual(opcode_in_pickle(expected, s), True)
def test_newobj_tuple(self):
x = MyTuple([1, 2, 3])
x.foo = 42
x.bar = "hello"
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(tuple(x), tuple(y))
self.assertEqual(x.__dict__, y.__dict__)
def test_newobj_list(self):
x = MyList([1, 2, 3])
x.foo = 42
x.bar = "hello"
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(list(x), list(y))
self.assertEqual(x.__dict__, y.__dict__)
def test_newobj_generic(self):
for proto in protocols:
for C in myclasses:
B = C.__base__
x = C(C.sample)
x.foo = 42
s = self.dumps(x, proto)
y = self.loads(s)
detail = (proto, C, B, x, y, type(y))
self.assertEqual(B(x), B(y), detail)
self.assertEqual(x.__dict__, y.__dict__, detail)
def test_newobj_proxies(self):
# NEWOBJ should use the __class__ rather than the raw type
import weakref
classes = myclasses[:]
# Cannot create weakproxies to these classes
for c in (MyInt, MyLong, MyStr, MyTuple):
classes.remove(c)
for proto in protocols:
for C in classes:
B = C.__base__
x = C(C.sample)
x.foo = 42
p = weakref.proxy(x)
s = self.dumps(p, proto)
y = self.loads(s)
self.assertEqual(type(y), type(x)) # rather than type(p)
detail = (proto, C, B, x, y, type(y))
self.assertEqual(B(x), B(y), detail)
self.assertEqual(x.__dict__, y.__dict__, detail)
# Register a type with copy_reg, with extension code extcode. Pickle
# an object of that type. Check that the resulting pickle uses opcode
# (EXT[124]) under proto 2, and not in proto 1.
def produce_global_ext(self, extcode, opcode):
e = ExtensionSaver(extcode)
try:
copy_reg.add_extension(__name__, "MyList", extcode)
x = MyList([1, 2, 3])
x.foo = 42
x.bar = "hello"
# Dump using protocol 1 for comparison.
s1 = self.dumps(x, 1)
self.assertIn(__name__, s1)
self.assertIn("MyList", s1)
self.assertEqual(opcode_in_pickle(opcode, s1), False)
y = self.loads(s1)
self.assertEqual(list(x), list(y))
self.assertEqual(x.__dict__, y.__dict__)
# Dump using protocol 2 for test.
s2 = self.dumps(x, 2)
self.assertNotIn(__name__, s2)
self.assertNotIn("MyList", s2)
self.assertEqual(opcode_in_pickle(opcode, s2), True)
y = self.loads(s2)
self.assertEqual(list(x), list(y))
self.assertEqual(x.__dict__, y.__dict__)
finally:
e.restore()
def test_global_ext1(self):
self.produce_global_ext(0x00000001, pickle.EXT1) # smallest EXT1 code
self.produce_global_ext(0x000000ff, pickle.EXT1) # largest EXT1 code
def test_global_ext2(self):
self.produce_global_ext(0x00000100, pickle.EXT2) # smallest EXT2 code
self.produce_global_ext(0x0000ffff, pickle.EXT2) # largest EXT2 code
self.produce_global_ext(0x0000abcd, pickle.EXT2) # check endianness
def test_global_ext4(self):
self.produce_global_ext(0x00010000, pickle.EXT4) # smallest EXT4 code
self.produce_global_ext(0x7fffffff, pickle.EXT4) # largest EXT4 code
self.produce_global_ext(0x12abcdef, pickle.EXT4) # check endianness
def test_list_chunking(self):
n = 10 # too small to chunk
x = range(n)
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
num_appends = count_opcode(pickle.APPENDS, s)
self.assertEqual(num_appends, proto > 0)
n = 2500 # expect at least two chunks when proto > 0
x = range(n)
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
num_appends = count_opcode(pickle.APPENDS, s)
if proto == 0:
self.assertEqual(num_appends, 0)
else:
self.assertTrue(num_appends >= 2)
def test_dict_chunking(self):
n = 10 # too small to chunk
x = dict.fromkeys(range(n))
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
num_setitems = count_opcode(pickle.SETITEMS, s)
self.assertEqual(num_setitems, proto > 0)
n = 2500 # expect at least two chunks when proto > 0
x = dict.fromkeys(range(n))
for proto in protocols:
s = self.dumps(x, proto)
y = self.loads(s)
self.assertEqual(x, y)
num_setitems = count_opcode(pickle.SETITEMS, s)
if proto == 0:
self.assertEqual(num_setitems, 0)
else:
self.assertTrue(num_setitems >= 2)
def test_simple_newobj(self):
x = SimpleNewObj.__new__(SimpleNewObj, 0xface) # avoid __init__
x.abc = 666
for proto in protocols:
s = self.dumps(x, proto)
if proto < 1:
self.assertIn('\nI64206', s) # INT
else:
self.assertIn('M\xce\xfa', s) # BININT2
self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
y = self.loads(s) # will raise TypeError if __init__ called
self.assertEqual(y.abc, 666)
self.assertEqual(x.__dict__, y.__dict__)
def test_complex_newobj(self):
x = ComplexNewObj.__new__(ComplexNewObj, 0xface) # avoid __init__
x.abc = 666
for proto in protocols:
s = self.dumps(x, proto)
if proto < 1:
self.assertIn('\nI64206', s) # INT
elif proto < 2:
self.assertIn('M\xce\xfa', s) # BININT2
else:
self.assertIn('U\x04FACE', s) # SHORT_BINSTRING
self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
y = self.loads(s) # will raise TypeError if __init__ called
self.assertEqual(y.abc, 666)
self.assertEqual(x.__dict__, y.__dict__)
def test_newobj_list_slots(self):
x = SlotList([1, 2, 3])
x.foo = 42
x.bar = "hello"
s = self.dumps(x, 2)
y = self.loads(s)
self.assertEqual(list(x), list(y))
self.assertEqual(x.__dict__, y.__dict__)
self.assertEqual(x.foo, y.foo)
self.assertEqual(x.bar, y.bar)
def test_reduce_overrides_default_reduce_ex(self):
for proto in protocols:
x = REX_one()
self.assertEqual(x._reduce_called, 0)
s = self.dumps(x, proto)
self.assertEqual(x._reduce_called, 1)
y = self.loads(s)
self.assertEqual(y._reduce_called, 0)
def test_reduce_ex_called(self):
for proto in protocols:
x = REX_two()
self.assertEqual(x._proto, None)
s = self.dumps(x, proto)
self.assertEqual(x._proto, proto)
y = self.loads(s)
self.assertEqual(y._proto, None)
def test_reduce_ex_overrides_reduce(self):
for proto in protocols:
x = REX_three()
self.assertEqual(x._proto, None)
s = self.dumps(x, proto)
self.assertEqual(x._proto, proto)
y = self.loads(s)
self.assertEqual(y._proto, None)
def test_reduce_ex_calls_base(self):
for proto in protocols:
x = REX_four()
self.assertEqual(x._proto, None)
s = self.dumps(x, proto)
self.assertEqual(x._proto, proto)
y = self.loads(s)
self.assertEqual(y._proto, proto)
def test_reduce_calls_base(self):
for proto in protocols:
x = REX_five()
self.assertEqual(x._reduce_called, 0)
s = self.dumps(x, proto)
self.assertEqual(x._reduce_called, 1)
y = self.loads(s)
self.assertEqual(y._reduce_called, 1)
@no_tracing
def test_bad_getattr(self):
# Issue #3514: crash when there is an infinite loop in __getattr__
x = BadGetattr()
for proto in protocols:
self.assertRaises(RuntimeError, self.dumps, x, proto)
def test_reduce_bad_iterator(self):
# Issue4176: crash when 4th and 5th items of __reduce__()
# are not iterators
class C(object):
def __reduce__(self):
# 4th item is not an iterator
return list, (), None, [], None
class D(object):
def __reduce__(self):
# 5th item is not an iterator
return dict, (), None, None, []
# Protocol 0 in Python implementation is less strict and also accepts
# iterables.
for proto in protocols:
try:
self.dumps(C(), proto)
except (AttributeError, pickle.PicklingError, cPickle.PicklingError):
pass
try:
self.dumps(D(), proto)
except (AttributeError, pickle.PicklingError, cPickle.PicklingError):
pass
def test_many_puts_and_gets(self):
# Test that internal data structures correctly deal with lots of
# puts/gets.
keys = ("aaa" + str(i) for i in xrange(100))
large_dict = dict((k, [4, 5, 6]) for k in keys)
obj = [dict(large_dict), dict(large_dict), dict(large_dict)]
for proto in protocols:
dumped = self.dumps(obj, proto)
loaded = self.loads(dumped)
self.assertEqual(loaded, obj,
"Failed protocol %d: %r != %r"
% (proto, obj, loaded))
def test_attribute_name_interning(self):
# Test that attribute names of pickled objects are interned when
# unpickling.
for proto in protocols:
x = C()
x.foo = 42
x.bar = "hello"
s = self.dumps(x, proto)
y = self.loads(s)
x_keys = sorted(x.__dict__)
y_keys = sorted(y.__dict__)
for x_key, y_key in zip(x_keys, y_keys):
self.assertIs(x_key, y_key)
def test_large_pickles(self):
# Test the correctness of internal buffering routines when handling
# large data.
for proto in protocols:
data = (1, min, 'xy' * (30 * 1024), len)
dumped = self.dumps(data, proto)
loaded = self.loads(dumped)
self.assertEqual(len(loaded), len(data))
self.assertEqual(loaded, data)
def _check_pickling_with_opcode(self, obj, opcode, proto):
pickled = self.dumps(obj, proto)
self.assertTrue(opcode_in_pickle(opcode, pickled))
unpickled = self.loads(pickled)
self.assertEqual(obj, unpickled)
def test_appends_on_non_lists(self):
# Issue #17720
obj = REX_six([1, 2, 3])
for proto in protocols:
if proto == 0:
self._check_pickling_with_opcode(obj, pickle.APPEND, proto)
else:
self._check_pickling_with_opcode(obj, pickle.APPENDS, proto)
def test_setitems_on_non_dicts(self):
obj = REX_seven({1: -1, 2: -2, 3: -3})
for proto in protocols:
if proto == 0:
self._check_pickling_with_opcode(obj, pickle.SETITEM, proto)
else:
self._check_pickling_with_opcode(obj, pickle.SETITEMS, proto)
# Test classes for reduce_ex
class REX_one(object):
_reduce_called = 0
def __reduce__(self):
self._reduce_called = 1
return REX_one, ()
# No __reduce_ex__ here, but inheriting it from object
class REX_two(object):
_proto = None
def __reduce_ex__(self, proto):
self._proto = proto
return REX_two, ()
# No __reduce__ here, but inheriting it from object
class REX_three(object):
_proto = None
def __reduce_ex__(self, proto):
self._proto = proto
return REX_two, ()
def __reduce__(self):
raise TestFailed, "This __reduce__ shouldn't be called"
class REX_four(object):
_proto = None
def __reduce_ex__(self, proto):
self._proto = proto
return object.__reduce_ex__(self, proto)
# Calling base class method should succeed
class REX_five(object):
_reduce_called = 0
def __reduce__(self):
self._reduce_called = 1
return object.__reduce__(self)
# This one used to fail with infinite recursion
class REX_six(object):
"""This class is used to check the 4th argument (list iterator) of
the reduce protocol.
"""
def __init__(self, items=None):
if items is None:
items = []
self.items = items
def __eq__(self, other):
return type(self) is type(other) and self.items == other.items
def append(self, item):
self.items.append(item)
def extend(self, items):
for item in items:
self.append(item)
def __reduce__(self):
return type(self), (), None, iter(self.items), None
class REX_seven(object):
"""This class is used to check the 5th argument (dict iterator) of
the reduce protocol.
"""
def __init__(self, table=None):
if table is None:
table = {}
self.table = table
def __eq__(self, other):
return type(self) is type(other) and self.table == other.table
def __setitem__(self, key, value):
self.table[key] = value
def __reduce__(self):
return type(self), (), None, None, iter(self.table.items())
# Test classes for newobj
class MyInt(int):
sample = 1
class MyLong(long):
sample = 1L
class MyFloat(float):
sample = 1.0
class MyComplex(complex):
sample = 1.0 + 0.0j
class MyStr(str):
sample = "hello"
class MyUnicode(unicode):
sample = u"hello \u1234"
class MyTuple(tuple):
sample = (1, 2, 3)
class MyList(list):
sample = [1, 2, 3]
class MyDict(dict):
sample = {"a": 1, "b": 2}
myclasses = [MyInt, MyLong, MyFloat,
MyComplex,
MyStr, MyUnicode,
MyTuple, MyList, MyDict]
class SlotList(MyList):
__slots__ = ["foo"]
class SimpleNewObj(int):
def __init__(self, *args, **kwargs):
# raise an error, to make sure this isn't called
raise TypeError("SimpleNewObj.__init__() didn't expect to get called")
def __eq__(self, other):
return int(self) == int(other) and self.__dict__ == other.__dict__
class ComplexNewObj(SimpleNewObj):
def __getnewargs__(self):
return ('%X' % self, 16)
class BadGetattr:
def __getattr__(self, key):
self.foo
class AbstractPickleModuleTests(unittest.TestCase):
def test_dump_closed_file(self):
import os
f = open(TESTFN, "w")
try:
f.close()
self.assertRaises(ValueError, self.module.dump, 123, f)
finally:
os.remove(TESTFN)
def test_load_closed_file(self):
import os
f = open(TESTFN, "w")
try:
f.close()
self.assertRaises(ValueError, self.module.dump, 123, f)
finally:
os.remove(TESTFN)
def test_load_from_and_dump_to_file(self):
stream = cStringIO.StringIO()
data = [123, {}, 124]
self.module.dump(data, stream)
stream.seek(0)
unpickled = self.module.load(stream)
self.assertEqual(unpickled, data)
def test_highest_protocol(self):
# Of course this needs to be changed when HIGHEST_PROTOCOL changes.
self.assertEqual(self.module.HIGHEST_PROTOCOL, 2)
def test_callapi(self):
f = cStringIO.StringIO()
# With and without keyword arguments
self.module.dump(123, f, -1)
self.module.dump(123, file=f, protocol=-1)
self.module.dumps(123, -1)
self.module.dumps(123, protocol=-1)
self.module.Pickler(f, -1)
self.module.Pickler(f, protocol=-1)
def test_incomplete_input(self):
s = StringIO.StringIO("X''.")
self.assertRaises(EOFError, self.module.load, s)
def test_restricted(self):
# issue7128: cPickle failed in restricted mode
builtins = {self.module.__name__: self.module,
'__import__': __import__}
d = {}
teststr = "def f(): {0}.dumps(0)".format(self.module.__name__)
exec teststr in {'__builtins__': builtins}, d
d['f']()
def test_bad_input(self):
# Test issue4298
s = '\x58\0\0\0\x54'
self.assertRaises(EOFError, self.module.loads, s)
class AbstractPersistentPicklerTests(unittest.TestCase):
# This class defines persistent_id() and persistent_load()
# functions that should be used by the pickler. All even integers
# are pickled using persistent ids.
def persistent_id(self, object):
if isinstance(object, int) and object % 2 == 0:
self.id_count += 1
return str(object)
elif object == "test_false_value":
self.false_count += 1
return ""
else:
return None
def persistent_load(self, oid):
if not oid:
self.load_false_count += 1
return "test_false_value"
else:
self.load_count += 1
object = int(oid)
assert object % 2 == 0
return object
def test_persistence(self):
L = range(10) + ["test_false_value"]
for proto in protocols:
self.id_count = 0
self.false_count = 0
self.load_false_count = 0
self.load_count = 0
self.assertEqual(self.loads(self.dumps(L, proto)), L)
self.assertEqual(self.id_count, 5)
self.assertEqual(self.false_count, 1)
self.assertEqual(self.load_count, 5)
self.assertEqual(self.load_false_count, 1)
class AbstractPicklerUnpicklerObjectTests(unittest.TestCase):
pickler_class = None
unpickler_class = None
def setUp(self):
assert self.pickler_class
assert self.unpickler_class
def test_clear_pickler_memo(self):
# To test whether clear_memo() has any effect, we pickle an object,
# then pickle it again without clearing the memo; the two serialized
# forms should be different. If we clear_memo() and then pickle the
# object again, the third serialized form should be identical to the
# first one we obtained.
data = ["abcdefg", "abcdefg", 44]
f = cStringIO.StringIO()
pickler = self.pickler_class(f)
pickler.dump(data)
first_pickled = f.getvalue()
# Reset StringIO object.
f.seek(0)
f.truncate()
pickler.dump(data)
second_pickled = f.getvalue()
# Reset the Pickler and StringIO objects.
pickler.clear_memo()
f.seek(0)
f.truncate()
pickler.dump(data)
third_pickled = f.getvalue()
self.assertNotEqual(first_pickled, second_pickled)
self.assertEqual(first_pickled, third_pickled)
def test_priming_pickler_memo(self):
# Verify that we can set the Pickler's memo attribute.
data = ["abcdefg", "abcdefg", 44]
f = cStringIO.StringIO()
pickler = self.pickler_class(f)
pickler.dump(data)
first_pickled = f.getvalue()
f = cStringIO.StringIO()
primed = self.pickler_class(f)
primed.memo = pickler.memo
primed.dump(data)
primed_pickled = f.getvalue()
self.assertNotEqual(first_pickled, primed_pickled)
def test_priming_unpickler_memo(self):
# Verify that we can set the Unpickler's memo attribute.
data = ["abcdefg", "abcdefg", 44]
f = cStringIO.StringIO()
pickler = self.pickler_class(f)
pickler.dump(data)
first_pickled = f.getvalue()
f = cStringIO.StringIO()
primed = self.pickler_class(f)
primed.memo = pickler.memo
primed.dump(data)
primed_pickled = f.getvalue()
unpickler = self.unpickler_class(cStringIO.StringIO(first_pickled))
unpickled_data1 = unpickler.load()
self.assertEqual(unpickled_data1, data)
primed = self.unpickler_class(cStringIO.StringIO(primed_pickled))
primed.memo = unpickler.memo
unpickled_data2 = primed.load()
primed.memo.clear()
self.assertEqual(unpickled_data2, data)
self.assertTrue(unpickled_data2 is unpickled_data1)
def test_reusing_unpickler_objects(self):
data1 = ["abcdefg", "abcdefg", 44]
f = cStringIO.StringIO()
pickler = self.pickler_class(f)
pickler.dump(data1)
pickled1 = f.getvalue()
data2 = ["abcdefg", 44, 44]
f = cStringIO.StringIO()
pickler = self.pickler_class(f)
pickler.dump(data2)
pickled2 = f.getvalue()
f = cStringIO.StringIO()
f.write(pickled1)
f.seek(0)
unpickler = self.unpickler_class(f)
self.assertEqual(unpickler.load(), data1)
f.seek(0)
f.truncate()
f.write(pickled2)
f.seek(0)
self.assertEqual(unpickler.load(), data2)
def _check_multiple_unpicklings(self, ioclass, seekable):
for proto in protocols:
data1 = [(x, str(x)) for x in xrange(2000)] + ["abcde", len]
f = ioclass()
pickler = self.pickler_class(f, protocol=proto)
pickler.dump(data1)
pickled = f.getvalue()
N = 5
f = ioclass(pickled * N)
unpickler = self.unpickler_class(f)
for i in xrange(N):
if seekable:
pos = f.tell()
self.assertEqual(unpickler.load(), data1)
if seekable:
self.assertEqual(f.tell(), pos + len(pickled))
self.assertRaises(EOFError, unpickler.load)
def test_multiple_unpicklings_seekable(self):
self._check_multiple_unpicklings(StringIO.StringIO, True)
def test_multiple_unpicklings_unseekable(self):
self._check_multiple_unpicklings(UnseekableIO, False)
def test_unpickling_buffering_readline(self):
# Issue #12687: the unpickler's buffering logic could fail with
# text mode opcodes.
import io
data = list(xrange(10))
for proto in protocols:
for buf_size in xrange(1, 11):
f = io.BufferedRandom(io.BytesIO(), buffer_size=buf_size)
pickler = self.pickler_class(f, protocol=proto)
pickler.dump(data)
f.seek(0)
unpickler = self.unpickler_class(f)
self.assertEqual(unpickler.load(), data)
class BigmemPickleTests(unittest.TestCase):
# Memory requirements: 1 byte per character for input strings, 1 byte
# for pickled data, 1 byte for unpickled strings, 1 byte for internal
# buffer and 1 byte of free space for resizing of internal buffer.
@precisionbigmemtest(size=_2G + 100*_1M, memuse=5)
def test_huge_strlist(self, size):
chunksize = 2**20
data = []
while size > chunksize:
data.append('x' * chunksize)
size -= chunksize
chunksize += 1
data.append('y' * size)
try:
for proto in protocols:
try:
pickled = self.dumps(data, proto)
res = self.loads(pickled)
self.assertEqual(res, data)
finally:
res = None
pickled = None
finally:
data = None
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