2220 lines
73 KiB
Python
2220 lines
73 KiB
Python
import copyreg
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import io
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import pickle
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import pickletools
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import random
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import struct
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import sys
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import unittest
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import weakref
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from http.cookies import SimpleCookie
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from test.support import (
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TestFailed, TESTFN, run_with_locale, no_tracing,
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_2G, _4G, bigmemtest,
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)
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from pickle import bytes_types
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# Tests that try a number of pickle protocols should have a
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# for proto in protocols:
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# kind of outer loop.
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protocols = range(pickle.HIGHEST_PROTOCOL + 1)
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ascii_char_size = 1
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# Return True if opcode code appears in the pickle, else False.
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def opcode_in_pickle(code, pickle):
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for op, dummy, dummy in pickletools.genops(pickle):
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if op.code == code.decode("latin-1"):
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return True
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return False
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# Return the number of times opcode code appears in pickle.
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def count_opcode(code, pickle):
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n = 0
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for op, dummy, dummy in pickletools.genops(pickle):
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if op.code == code.decode("latin-1"):
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n += 1
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return n
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class UnseekableIO(io.BytesIO):
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def peek(self, *args):
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raise NotImplementedError
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def seekable(self):
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return False
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def seek(self, *args):
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raise io.UnsupportedOperation
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def tell(self):
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raise io.UnsupportedOperation
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# We can't very well test the extension registry without putting known stuff
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# in it, but we have to be careful to restore its original state. Code
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# should do this:
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#
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# e = ExtensionSaver(extension_code)
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# try:
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# fiddle w/ the extension registry's stuff for extension_code
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# finally:
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# e.restore()
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class ExtensionSaver:
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# Remember current registration for code (if any), and remove it (if
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# there is one).
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def __init__(self, code):
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self.code = code
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if code in copyreg._inverted_registry:
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self.pair = copyreg._inverted_registry[code]
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copyreg.remove_extension(self.pair[0], self.pair[1], code)
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else:
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self.pair = None
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# Restore previous registration for code.
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def restore(self):
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code = self.code
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curpair = copyreg._inverted_registry.get(code)
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if curpair is not None:
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copyreg.remove_extension(curpair[0], curpair[1], code)
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pair = self.pair
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if pair is not None:
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copyreg.add_extension(pair[0], pair[1], code)
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class C:
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def __eq__(self, other):
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return self.__dict__ == other.__dict__
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class D(C):
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def __init__(self, arg):
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pass
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class E(C):
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def __getinitargs__(self):
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return ()
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class H(object):
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pass
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import __main__
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__main__.C = C
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C.__module__ = "__main__"
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__main__.D = D
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D.__module__ = "__main__"
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__main__.E = E
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E.__module__ = "__main__"
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__main__.H = H
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H.__module__ = "__main__"
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class myint(int):
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def __init__(self, x):
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self.str = str(x)
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class initarg(C):
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def __init__(self, a, b):
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self.a = a
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self.b = b
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def __getinitargs__(self):
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return self.a, self.b
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class metaclass(type):
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pass
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class use_metaclass(object, metaclass=metaclass):
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pass
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class pickling_metaclass(type):
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def __eq__(self, other):
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return (type(self) == type(other) and
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self.reduce_args == other.reduce_args)
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def __reduce__(self):
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return (create_dynamic_class, self.reduce_args)
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def create_dynamic_class(name, bases):
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result = pickling_metaclass(name, bases, dict())
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result.reduce_args = (name, bases)
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return result
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# DATA0 .. DATA2 are the pickles we expect under the various protocols, for
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# the object returned by create_data().
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DATA0 = (
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b'(lp0\nL0L\naL1L\naF2.0\nac'
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b'builtins\ncomplex\n'
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b'p1\n(F3.0\nF0.0\ntp2\nRp'
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b'3\naL1L\naL-1L\naL255L\naL-'
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b'255L\naL-256L\naL65535L\na'
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b'L-65535L\naL-65536L\naL2'
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b'147483647L\naL-2147483'
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b'647L\naL-2147483648L\na('
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b'Vabc\np4\ng4\nccopyreg'
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b'\n_reconstructor\np5\n('
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b'c__main__\nC\np6\ncbu'
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b'iltins\nobject\np7\nNt'
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b'p8\nRp9\n(dp10\nVfoo\np1'
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b'1\nL1L\nsVbar\np12\nL2L\nsb'
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b'g9\ntp13\nag13\naL5L\na.'
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)
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# Disassembly of DATA0
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DATA0_DIS = """\
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0: ( MARK
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1: l LIST (MARK at 0)
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2: p PUT 0
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5: L LONG 0
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9: a APPEND
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10: L LONG 1
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14: a APPEND
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15: F FLOAT 2.0
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20: a APPEND
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21: c GLOBAL 'builtins complex'
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39: p PUT 1
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42: ( MARK
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43: F FLOAT 3.0
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48: F FLOAT 0.0
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53: t TUPLE (MARK at 42)
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54: p PUT 2
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57: R REDUCE
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58: p PUT 3
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61: a APPEND
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62: L LONG 1
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66: a APPEND
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67: L LONG -1
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72: a APPEND
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73: L LONG 255
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79: a APPEND
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80: L LONG -255
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87: a APPEND
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88: L LONG -256
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95: a APPEND
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96: L LONG 65535
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104: a APPEND
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105: L LONG -65535
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114: a APPEND
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115: L LONG -65536
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124: a APPEND
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125: L LONG 2147483647
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138: a APPEND
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139: L LONG -2147483647
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153: a APPEND
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154: L LONG -2147483648
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168: a APPEND
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169: ( MARK
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170: V UNICODE 'abc'
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175: p PUT 4
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178: g GET 4
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181: c GLOBAL 'copyreg _reconstructor'
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205: p PUT 5
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208: ( MARK
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209: c GLOBAL '__main__ C'
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221: p PUT 6
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224: c GLOBAL 'builtins object'
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241: p PUT 7
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244: N NONE
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245: t TUPLE (MARK at 208)
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246: p PUT 8
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249: R REDUCE
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250: p PUT 9
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253: ( MARK
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254: d DICT (MARK at 253)
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255: p PUT 10
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259: V UNICODE 'foo'
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264: p PUT 11
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268: L LONG 1
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272: s SETITEM
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273: V UNICODE 'bar'
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278: p PUT 12
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282: L LONG 2
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286: s SETITEM
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287: b BUILD
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288: g GET 9
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291: t TUPLE (MARK at 169)
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292: p PUT 13
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296: a APPEND
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297: g GET 13
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301: a APPEND
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302: L LONG 5
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306: a APPEND
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307: . STOP
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highest protocol among opcodes = 0
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"""
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DATA1 = (
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b']q\x00(K\x00K\x01G@\x00\x00\x00\x00\x00\x00\x00c'
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b'builtins\ncomplex\nq\x01'
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b'(G@\x08\x00\x00\x00\x00\x00\x00G\x00\x00\x00\x00\x00\x00\x00\x00t'
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b'q\x02Rq\x03K\x01J\xff\xff\xff\xffK\xffJ\x01\xff\xff\xffJ'
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b'\x00\xff\xff\xffM\xff\xffJ\x01\x00\xff\xffJ\x00\x00\xff\xffJ\xff\xff'
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b'\xff\x7fJ\x01\x00\x00\x80J\x00\x00\x00\x80(X\x03\x00\x00\x00ab'
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b'cq\x04h\x04ccopyreg\n_reco'
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b'nstructor\nq\x05(c__main'
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b'__\nC\nq\x06cbuiltins\n'
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b'object\nq\x07Ntq\x08Rq\t}q\n('
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b'X\x03\x00\x00\x00fooq\x0bK\x01X\x03\x00\x00\x00bar'
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b'q\x0cK\x02ubh\ttq\rh\rK\x05e.'
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)
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# Disassembly of DATA1
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DATA1_DIS = """\
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0: ] EMPTY_LIST
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1: q BINPUT 0
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3: ( MARK
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4: K BININT1 0
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6: K BININT1 1
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8: G BINFLOAT 2.0
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17: c GLOBAL 'builtins complex'
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35: q BINPUT 1
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37: ( MARK
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38: G BINFLOAT 3.0
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47: G BINFLOAT 0.0
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56: t TUPLE (MARK at 37)
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57: q BINPUT 2
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59: R REDUCE
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60: q BINPUT 3
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62: K BININT1 1
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64: J BININT -1
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69: K BININT1 255
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71: J BININT -255
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76: J BININT -256
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81: M BININT2 65535
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84: J BININT -65535
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89: J BININT -65536
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94: J BININT 2147483647
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99: J BININT -2147483647
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104: J BININT -2147483648
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109: ( MARK
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110: X BINUNICODE 'abc'
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118: q BINPUT 4
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120: h BINGET 4
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122: c GLOBAL 'copyreg _reconstructor'
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146: q BINPUT 5
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148: ( MARK
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149: c GLOBAL '__main__ C'
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161: q BINPUT 6
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163: c GLOBAL 'builtins object'
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180: q BINPUT 7
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182: N NONE
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183: t TUPLE (MARK at 148)
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184: q BINPUT 8
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186: R REDUCE
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187: q BINPUT 9
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189: } EMPTY_DICT
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190: q BINPUT 10
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192: ( MARK
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193: X BINUNICODE 'foo'
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201: q BINPUT 11
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203: K BININT1 1
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205: X BINUNICODE 'bar'
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213: q BINPUT 12
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215: K BININT1 2
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217: u SETITEMS (MARK at 192)
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218: b BUILD
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219: h BINGET 9
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221: t TUPLE (MARK at 109)
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222: q BINPUT 13
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224: h BINGET 13
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226: K BININT1 5
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228: e APPENDS (MARK at 3)
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229: . STOP
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highest protocol among opcodes = 1
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"""
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DATA2 = (
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b'\x80\x02]q\x00(K\x00K\x01G@\x00\x00\x00\x00\x00\x00\x00c'
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b'builtins\ncomplex\n'
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b'q\x01G@\x08\x00\x00\x00\x00\x00\x00G\x00\x00\x00\x00\x00\x00\x00\x00'
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b'\x86q\x02Rq\x03K\x01J\xff\xff\xff\xffK\xffJ\x01\xff\xff\xff'
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b'J\x00\xff\xff\xffM\xff\xffJ\x01\x00\xff\xffJ\x00\x00\xff\xffJ\xff'
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b'\xff\xff\x7fJ\x01\x00\x00\x80J\x00\x00\x00\x80(X\x03\x00\x00\x00a'
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b'bcq\x04h\x04c__main__\nC\nq\x05'
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b')\x81q\x06}q\x07(X\x03\x00\x00\x00fooq\x08K\x01'
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b'X\x03\x00\x00\x00barq\tK\x02ubh\x06tq\nh'
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b'\nK\x05e.'
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)
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# Disassembly of DATA2
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DATA2_DIS = """\
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0: \x80 PROTO 2
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2: ] EMPTY_LIST
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3: q BINPUT 0
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5: ( MARK
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6: K BININT1 0
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8: K BININT1 1
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10: G BINFLOAT 2.0
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19: c GLOBAL 'builtins complex'
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37: q BINPUT 1
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39: G BINFLOAT 3.0
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48: G BINFLOAT 0.0
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57: \x86 TUPLE2
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58: q BINPUT 2
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60: R REDUCE
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61: q BINPUT 3
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63: K BININT1 1
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65: J BININT -1
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70: K BININT1 255
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72: J BININT -255
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77: J BININT -256
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82: M BININT2 65535
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85: J BININT -65535
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90: J BININT -65536
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95: J BININT 2147483647
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100: J BININT -2147483647
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105: J BININT -2147483648
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110: ( MARK
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111: X BINUNICODE 'abc'
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119: q BINPUT 4
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121: h BINGET 4
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123: c GLOBAL '__main__ C'
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135: q BINPUT 5
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137: ) EMPTY_TUPLE
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138: \x81 NEWOBJ
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139: q BINPUT 6
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141: } EMPTY_DICT
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142: q BINPUT 7
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144: ( MARK
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145: X BINUNICODE 'foo'
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153: q BINPUT 8
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155: K BININT1 1
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157: X BINUNICODE 'bar'
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165: q BINPUT 9
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167: K BININT1 2
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169: u SETITEMS (MARK at 144)
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170: b BUILD
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171: h BINGET 6
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173: t TUPLE (MARK at 110)
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174: q BINPUT 10
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176: h BINGET 10
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178: K BININT1 5
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180: e APPENDS (MARK at 5)
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181: . STOP
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highest protocol among opcodes = 2
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"""
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# set([1,2]) pickled from 2.x with protocol 2
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DATA3 = b'\x80\x02c__builtin__\nset\nq\x00]q\x01(K\x01K\x02e\x85q\x02Rq\x03.'
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|
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# xrange(5) pickled from 2.x with protocol 2
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DATA4 = b'\x80\x02c__builtin__\nxrange\nq\x00K\x00K\x05K\x01\x87q\x01Rq\x02.'
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|
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# a SimpleCookie() object pickled from 2.x with protocol 2
|
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DATA5 = (b'\x80\x02cCookie\nSimpleCookie\nq\x00)\x81q\x01U\x03key'
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b'q\x02cCookie\nMorsel\nq\x03)\x81q\x04(U\x07commentq\x05U'
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b'\x00q\x06U\x06domainq\x07h\x06U\x06secureq\x08h\x06U\x07'
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b'expiresq\th\x06U\x07max-ageq\nh\x06U\x07versionq\x0bh\x06U'
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b'\x04pathq\x0ch\x06U\x08httponlyq\rh\x06u}q\x0e(U\x0b'
|
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b'coded_valueq\x0fU\x05valueq\x10h\x10h\x10h\x02h\x02ubs}q\x11b.')
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|
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# set([3]) pickled from 2.x with protocol 2
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DATA6 = b'\x80\x02c__builtin__\nset\nq\x00]q\x01K\x03a\x85q\x02Rq\x03.'
|
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|
|
python2_exceptions_without_args = (
|
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ArithmeticError,
|
|
AssertionError,
|
|
AttributeError,
|
|
BaseException,
|
|
BufferError,
|
|
BytesWarning,
|
|
DeprecationWarning,
|
|
EOFError,
|
|
EnvironmentError,
|
|
Exception,
|
|
FloatingPointError,
|
|
FutureWarning,
|
|
GeneratorExit,
|
|
IOError,
|
|
ImportError,
|
|
ImportWarning,
|
|
IndentationError,
|
|
IndexError,
|
|
KeyError,
|
|
KeyboardInterrupt,
|
|
LookupError,
|
|
MemoryError,
|
|
NameError,
|
|
NotImplementedError,
|
|
OSError,
|
|
OverflowError,
|
|
PendingDeprecationWarning,
|
|
ReferenceError,
|
|
RuntimeError,
|
|
RuntimeWarning,
|
|
# StandardError is gone in Python 3, we map it to Exception
|
|
StopIteration,
|
|
SyntaxError,
|
|
SyntaxWarning,
|
|
SystemError,
|
|
SystemExit,
|
|
TabError,
|
|
TypeError,
|
|
UnboundLocalError,
|
|
UnicodeError,
|
|
UnicodeWarning,
|
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UserWarning,
|
|
ValueError,
|
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Warning,
|
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ZeroDivisionError,
|
|
)
|
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|
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exception_pickle = b'\x80\x02cexceptions\n?\nq\x00)Rq\x01.'
|
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|
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# Exception objects without arguments pickled from 2.x with protocol 2
|
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DATA7 = {
|
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exception :
|
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exception_pickle.replace(b'?', exception.__name__.encode("ascii"))
|
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for exception in python2_exceptions_without_args
|
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}
|
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|
|
# StandardError is mapped to Exception, test that separately
|
|
DATA8 = exception_pickle.replace(b'?', b'StandardError')
|
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|
|
# UnicodeEncodeError object pickled from 2.x with protocol 2
|
|
DATA9 = (b'\x80\x02cexceptions\nUnicodeEncodeError\n'
|
|
b'q\x00(U\x05asciiq\x01X\x03\x00\x00\x00fooq\x02K\x00K\x01'
|
|
b'U\x03badq\x03tq\x04Rq\x05.')
|
|
|
|
|
|
def create_data():
|
|
c = C()
|
|
c.foo = 1
|
|
c.bar = 2
|
|
x = [0, 1, 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 AbstractPickleTests(unittest.TestCase):
|
|
# Subclass must define self.dumps, self.loads.
|
|
|
|
optimized = False
|
|
|
|
_testdata = create_data()
|
|
|
|
def setUp(self):
|
|
pass
|
|
|
|
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 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.assert_is_copy(x, y)
|
|
|
|
x = (1, ())
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(x, y)
|
|
|
|
x = initarg(1, x)
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(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.assert_is_copy(expected, got)
|
|
|
|
def test_load_from_data0(self):
|
|
self.assert_is_copy(self._testdata, self.loads(DATA0))
|
|
|
|
def test_load_from_data1(self):
|
|
self.assert_is_copy(self._testdata, self.loads(DATA1))
|
|
|
|
def test_load_from_data2(self):
|
|
self.assert_is_copy(self._testdata, self.loads(DATA2))
|
|
|
|
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)
|
|
15: p PUT 0
|
|
18: ( MARK
|
|
19: d DICT (MARK at 18)
|
|
20: p PUT 1
|
|
23: b BUILD
|
|
24: . STOP
|
|
"""
|
|
pickle0 = (b"(i__main__\n"
|
|
b"X\n"
|
|
b"p0\n"
|
|
b"(dp1\nb.").replace(b'X', xname)
|
|
self.assert_is_copy(X(*args), self.loads(pickle0))
|
|
|
|
# Protocol 1 (binary mode pickle)
|
|
"""
|
|
0: ( MARK
|
|
1: c GLOBAL '__main__ X'
|
|
15: q BINPUT 0
|
|
17: o OBJ (MARK at 0)
|
|
18: q BINPUT 1
|
|
20: } EMPTY_DICT
|
|
21: q BINPUT 2
|
|
23: b BUILD
|
|
24: . STOP
|
|
"""
|
|
pickle1 = (b'(c__main__\n'
|
|
b'X\n'
|
|
b'q\x00oq\x01}q\x02b.').replace(b'X', xname)
|
|
self.assert_is_copy(X(*args), self.loads(pickle1))
|
|
|
|
# Protocol 2 (pickle2 = b'\x80\x02' + pickle1)
|
|
"""
|
|
0: \x80 PROTO 2
|
|
2: ( MARK
|
|
3: c GLOBAL '__main__ X'
|
|
17: q BINPUT 0
|
|
19: o OBJ (MARK at 2)
|
|
20: q BINPUT 1
|
|
22: } EMPTY_DICT
|
|
23: q BINPUT 2
|
|
25: b BUILD
|
|
26: . STOP
|
|
"""
|
|
pickle2 = (b'\x80\x02(c__main__\n'
|
|
b'X\n'
|
|
b'q\x00oq\x01}q\x02b.').replace(b'X', xname)
|
|
self.assert_is_copy(X(*args), self.loads(pickle2))
|
|
|
|
# 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 io import StringIO
|
|
from pickletools import dis
|
|
|
|
for proto, expected in (0, DATA0_DIS), (1, DATA1_DIS):
|
|
s = self.dumps(self._testdata, proto)
|
|
filelike = 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.assertTrue(x is x[0])
|
|
|
|
def test_recursive_tuple(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.assertEqual(len(x[0]), 1)
|
|
self.assertTrue(x is x[0][0])
|
|
|
|
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(list(x.keys()), [1])
|
|
self.assertTrue(x[1] is x)
|
|
|
|
def test_recursive_set(self):
|
|
h = H()
|
|
y = set({h})
|
|
h.attr = y
|
|
for proto in protocols:
|
|
s = self.dumps(y, proto)
|
|
x = self.loads(s)
|
|
self.assertIsInstance(x, set)
|
|
self.assertIs(list(x)[0].attr, x)
|
|
self.assertEqual(len(x), 1)
|
|
|
|
def test_recursive_frozenset(self):
|
|
h = H()
|
|
y = frozenset({h})
|
|
h.attr = y
|
|
for proto in protocols:
|
|
s = self.dumps(y, proto)
|
|
x = self.loads(s)
|
|
self.assertIsInstance(x, frozenset)
|
|
self.assertIs(list(x)[0].attr, x)
|
|
self.assertEqual(len(x), 1)
|
|
|
|
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(list(x[0].attr.keys()), [1])
|
|
self.assertTrue(x[0].attr[1] is x)
|
|
|
|
def test_get(self):
|
|
self.assertRaises(KeyError, self.loads, b'g0\np0')
|
|
self.assert_is_copy([(100,), (100,)],
|
|
self.loads(b'((Kdtp0\nh\x00l.))'))
|
|
|
|
def test_unicode(self):
|
|
endcases = ['', '<\\u>', '<\\\u1234>', '<\n>',
|
|
'<\\>', '<\\\U00012345>',
|
|
# surrogates
|
|
'<\udc80>']
|
|
for proto in protocols:
|
|
for u in endcases:
|
|
p = self.dumps(u, proto)
|
|
u2 = self.loads(p)
|
|
self.assert_is_copy(u, u2)
|
|
|
|
def test_unicode_high_plane(self):
|
|
t = '\U00012345'
|
|
for proto in protocols:
|
|
p = self.dumps(t, proto)
|
|
t2 = self.loads(p)
|
|
self.assert_is_copy(t, t2)
|
|
|
|
def test_bytes(self):
|
|
for proto in protocols:
|
|
for s in b'', b'xyz', b'xyz'*100:
|
|
p = self.dumps(s, proto)
|
|
self.assert_is_copy(s, self.loads(p))
|
|
for s in [bytes([i]) for i in range(256)]:
|
|
p = self.dumps(s, proto)
|
|
self.assert_is_copy(s, self.loads(p))
|
|
for s in [bytes([i, i]) for i in range(256)]:
|
|
p = self.dumps(s, proto)
|
|
self.assert_is_copy(s, self.loads(p))
|
|
|
|
def test_ints(self):
|
|
import sys
|
|
for proto in protocols:
|
|
n = sys.maxsize
|
|
while n:
|
|
for expected in (-n, n):
|
|
s = self.dumps(expected, proto)
|
|
n2 = self.loads(s)
|
|
self.assert_is_copy(expected, n2)
|
|
n = n >> 1
|
|
|
|
def test_maxint64(self):
|
|
maxint64 = (1 << 63) - 1
|
|
data = b'I' + str(maxint64).encode("ascii") + b'\n.'
|
|
got = self.loads(data)
|
|
self.assert_is_copy(maxint64, got)
|
|
|
|
# Try too with a bogus literal.
|
|
data = b'I' + str(maxint64).encode("ascii") + b'JUNK\n.'
|
|
self.assertRaises(ValueError, self.loads, data)
|
|
|
|
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 = 1 << nbits
|
|
for npos in nbase-1, nbase, nbase+1:
|
|
for n in npos, -npos:
|
|
pickle = self.dumps(n, proto)
|
|
got = self.loads(pickle)
|
|
self.assert_is_copy(n, got)
|
|
# Try a monster. This is quadratic-time in protos 0 & 1, so don't
|
|
# bother with those.
|
|
nbase = int("deadbeeffeedface", 16)
|
|
nbase += nbase << 1000000
|
|
for n in nbase, -nbase:
|
|
p = self.dumps(n, 2)
|
|
got = self.loads(p)
|
|
# assert_is_copy is very expensive here as it precomputes
|
|
# a failure message by computing the repr() of n and got,
|
|
# we just do the check ourselves.
|
|
self.assertIs(type(got), int)
|
|
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.assert_is_copy(value, got)
|
|
|
|
@run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
|
|
def test_float_format(self):
|
|
# make sure that floats are formatted locale independent with proto 0
|
|
self.assertEqual(self.dumps(1.2, 0)[0:3], b'F1.')
|
|
|
|
def test_reduce(self):
|
|
pass
|
|
|
|
def test_getinitargs(self):
|
|
pass
|
|
|
|
def test_pop_empty_stack(self):
|
|
# Test issue7455
|
|
s = b'0'
|
|
self.assertRaises((pickle.UnpicklingError, IndexError), self.loads, s)
|
|
|
|
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,))
|
|
copyreg.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(type(a), type(b))
|
|
|
|
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.assert_is_copy(t, u)
|
|
if hasattr(os, "stat"):
|
|
t = os.stat(os.curdir)
|
|
s = self.dumps(t, proto)
|
|
u = self.loads(s)
|
|
self.assert_is_copy(t, u)
|
|
if hasattr(os, "statvfs"):
|
|
t = os.statvfs(os.curdir)
|
|
s = self.dumps(t, proto)
|
|
u = self.loads(s)
|
|
self.assert_is_copy(t, u)
|
|
|
|
def test_ellipsis(self):
|
|
for proto in protocols:
|
|
s = self.dumps(..., proto)
|
|
u = self.loads(s)
|
|
self.assertIs(..., u)
|
|
|
|
def test_notimplemented(self):
|
|
for proto in protocols:
|
|
s = self.dumps(NotImplemented, proto)
|
|
u = self.loads(s)
|
|
self.assertIs(NotImplemented, u)
|
|
|
|
def test_singleton_types(self):
|
|
# Issue #6477: Test that types of built-in singletons can be pickled.
|
|
singletons = [None, ..., NotImplemented]
|
|
for singleton in singletons:
|
|
for proto in protocols:
|
|
s = self.dumps(type(singleton), proto)
|
|
u = self.loads(s)
|
|
self.assertIs(type(singleton), u)
|
|
|
|
# Tests for protocol 2
|
|
|
|
def test_proto(self):
|
|
for proto in protocols:
|
|
pickled = self.dumps(None, proto)
|
|
if proto >= 2:
|
|
proto_header = pickle.PROTO + bytes([proto])
|
|
self.assertTrue(pickled.startswith(proto_header))
|
|
else:
|
|
self.assertEqual(count_opcode(pickle.PROTO, pickled), 0)
|
|
|
|
oob = protocols[-1] + 1 # a future protocol
|
|
build_none = pickle.NONE + pickle.STOP
|
|
badpickle = pickle.PROTO + bytes([oob]) + build_none
|
|
try:
|
|
self.loads(badpickle)
|
|
except ValueError as err:
|
|
self.assertIn("unsupported pickle protocol", str(err))
|
|
else:
|
|
self.fail("expected bad protocol number to raise ValueError")
|
|
|
|
def test_long1(self):
|
|
x = 12345678910111213141516178920
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(x, y)
|
|
self.assertEqual(opcode_in_pickle(pickle.LONG1, s), proto >= 2)
|
|
|
|
def test_long4(self):
|
|
x = 12345678910111213141516178920 << (256*8)
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(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,
|
|
|
|
(3, 0): pickle.EMPTY_TUPLE,
|
|
(3, 1): pickle.TUPLE1,
|
|
(3, 2): pickle.TUPLE2,
|
|
(3, 3): pickle.TUPLE3,
|
|
(3, 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.assert_is_copy(x, y)
|
|
expected = expected_opcode[min(proto, 3), len(x)]
|
|
self.assertTrue(opcode_in_pickle(expected, s))
|
|
|
|
def test_singletons(self):
|
|
# Map (proto, singleton) to expected opcode.
|
|
expected_opcode = {(0, None): pickle.NONE,
|
|
(1, None): pickle.NONE,
|
|
(2, None): pickle.NONE,
|
|
(3, None): pickle.NONE,
|
|
|
|
(0, True): pickle.INT,
|
|
(1, True): pickle.INT,
|
|
(2, True): pickle.NEWTRUE,
|
|
(3, True): pickle.NEWTRUE,
|
|
|
|
(0, False): pickle.INT,
|
|
(1, False): pickle.INT,
|
|
(2, False): pickle.NEWFALSE,
|
|
(3, 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[min(proto, 3), x]
|
|
self.assertTrue(opcode_in_pickle(expected, s))
|
|
|
|
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.assert_is_copy(x, y)
|
|
|
|
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.assert_is_copy(x, y)
|
|
|
|
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.assert_is_copy(x, y) # XXX revisit
|
|
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
|
|
classes = myclasses[:]
|
|
# Cannot create weakproxies to these classes
|
|
for c in (MyInt, 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 copyreg, 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:
|
|
copyreg.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__.encode("utf-8"), s1)
|
|
self.assertIn(b"MyList", s1)
|
|
self.assertFalse(opcode_in_pickle(opcode, s1))
|
|
|
|
y = self.loads(s1)
|
|
self.assert_is_copy(x, y)
|
|
|
|
# Dump using protocol 2 for test.
|
|
s2 = self.dumps(x, 2)
|
|
self.assertNotIn(__name__.encode("utf-8"), s2)
|
|
self.assertNotIn(b"MyList", s2)
|
|
self.assertEqual(opcode_in_pickle(opcode, s2), True, repr(s2))
|
|
|
|
y = self.loads(s2)
|
|
self.assert_is_copy(x, y)
|
|
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 = list(range(n))
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(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 = list(range(n))
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(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)
|
|
self.assertIsInstance(s, bytes_types)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(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.assert_is_copy(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_set_chunking(self):
|
|
n = 10 # too small to chunk
|
|
x = set(range(n))
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(x, y)
|
|
num_additems = count_opcode(pickle.ADDITEMS, s)
|
|
if proto < 4:
|
|
self.assertEqual(num_additems, 0)
|
|
else:
|
|
self.assertEqual(num_additems, 1)
|
|
|
|
n = 2500 # expect at least two chunks when proto >= 4
|
|
x = set(range(n))
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
y = self.loads(s)
|
|
self.assert_is_copy(x, y)
|
|
num_additems = count_opcode(pickle.ADDITEMS, s)
|
|
if proto < 4:
|
|
self.assertEqual(num_additems, 0)
|
|
else:
|
|
self.assertGreaterEqual(num_additems, 2)
|
|
|
|
def test_simple_newobj(self):
|
|
x = object.__new__(SimpleNewObj) # avoid __init__
|
|
x.abc = 666
|
|
for proto in protocols:
|
|
s = self.dumps(x, proto)
|
|
self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s),
|
|
2 <= proto < 4)
|
|
self.assertEqual(opcode_in_pickle(pickle.NEWOBJ_EX, s),
|
|
proto >= 4)
|
|
y = self.loads(s) # will raise TypeError if __init__ called
|
|
self.assert_is_copy(x, y)
|
|
|
|
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.assert_is_copy(x, y)
|
|
|
|
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 is less strict and also accept iterables.
|
|
for proto in protocols:
|
|
try:
|
|
self.dumps(C(), proto)
|
|
except (pickle.PickleError):
|
|
pass
|
|
try:
|
|
self.dumps(D(), proto)
|
|
except (pickle.PickleError):
|
|
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 range(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:
|
|
with self.subTest(proto=proto):
|
|
dumped = self.dumps(obj, proto)
|
|
loaded = self.loads(dumped)
|
|
self.assert_is_copy(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_unpickle_from_2x(self):
|
|
# Unpickle non-trivial data from Python 2.x.
|
|
loaded = self.loads(DATA3)
|
|
self.assertEqual(loaded, set([1, 2]))
|
|
loaded = self.loads(DATA4)
|
|
self.assertEqual(type(loaded), type(range(0)))
|
|
self.assertEqual(list(loaded), list(range(5)))
|
|
loaded = self.loads(DATA5)
|
|
self.assertEqual(type(loaded), SimpleCookie)
|
|
self.assertEqual(list(loaded.keys()), ["key"])
|
|
self.assertEqual(loaded["key"].value, "Set-Cookie: key=value")
|
|
|
|
for (exc, data) in DATA7.items():
|
|
loaded = self.loads(data)
|
|
self.assertIs(type(loaded), exc)
|
|
|
|
loaded = self.loads(DATA8)
|
|
self.assertIs(type(loaded), Exception)
|
|
|
|
loaded = self.loads(DATA9)
|
|
self.assertIs(type(loaded), UnicodeEncodeError)
|
|
self.assertEqual(loaded.object, "foo")
|
|
self.assertEqual(loaded.encoding, "ascii")
|
|
self.assertEqual(loaded.start, 0)
|
|
self.assertEqual(loaded.end, 1)
|
|
self.assertEqual(loaded.reason, "bad")
|
|
|
|
def test_pickle_to_2x(self):
|
|
# Pickle non-trivial data with protocol 2, expecting that it yields
|
|
# the same result as Python 2.x did.
|
|
# NOTE: this test is a bit too strong since we can produce different
|
|
# bytecode that 2.x will still understand.
|
|
dumped = self.dumps(range(5), 2)
|
|
self.assertEqual(dumped, DATA4)
|
|
dumped = self.dumps(set([3]), 2)
|
|
self.assertEqual(dumped, DATA6)
|
|
|
|
def test_large_pickles(self):
|
|
# Test the correctness of internal buffering routines when handling
|
|
# large data.
|
|
for proto in protocols:
|
|
data = (1, min, b'xy' * (30 * 1024), len)
|
|
dumped = self.dumps(data, proto)
|
|
loaded = self.loads(dumped)
|
|
self.assertEqual(len(loaded), len(data))
|
|
self.assertEqual(loaded, data)
|
|
|
|
def test_empty_bytestring(self):
|
|
# issue 11286
|
|
empty = self.loads(b'\x80\x03U\x00q\x00.', encoding='koi8-r')
|
|
self.assertEqual(empty, '')
|
|
|
|
def test_int_pickling_efficiency(self):
|
|
# Test compacity of int representation (see issue #12744)
|
|
for proto in protocols:
|
|
with self.subTest(proto=proto):
|
|
pickles = [self.dumps(2**n, proto) for n in range(70)]
|
|
sizes = list(map(len, pickles))
|
|
# the size function is monotonic
|
|
self.assertEqual(sorted(sizes), sizes)
|
|
if proto >= 2:
|
|
for p in pickles:
|
|
self.assertFalse(opcode_in_pickle(pickle.LONG, p))
|
|
|
|
def check_negative_32b_binXXX(self, dumped):
|
|
if sys.maxsize > 2**32:
|
|
self.skipTest("test is only meaningful on 32-bit builds")
|
|
# XXX Pure Python pickle reads lengths as signed and passes
|
|
# them directly to read() (hence the EOFError)
|
|
with self.assertRaises((pickle.UnpicklingError, EOFError,
|
|
ValueError, OverflowError)):
|
|
self.loads(dumped)
|
|
|
|
def test_negative_32b_binbytes(self):
|
|
# On 32-bit builds, a BINBYTES of 2**31 or more is refused
|
|
self.check_negative_32b_binXXX(b'\x80\x03B\xff\xff\xff\xffxyzq\x00.')
|
|
|
|
def test_negative_32b_binunicode(self):
|
|
# On 32-bit builds, a BINUNICODE of 2**31 or more is refused
|
|
self.check_negative_32b_binXXX(b'\x80\x03X\xff\xff\xff\xffxyzq\x00.')
|
|
|
|
def test_negative_put(self):
|
|
# Issue #12847
|
|
dumped = b'Va\np-1\n.'
|
|
self.assertRaises(ValueError, self.loads, dumped)
|
|
|
|
def test_negative_32b_binput(self):
|
|
# Issue #12847
|
|
if sys.maxsize > 2**32:
|
|
self.skipTest("test is only meaningful on 32-bit builds")
|
|
dumped = b'\x80\x03X\x01\x00\x00\x00ar\xff\xff\xff\xff.'
|
|
self.assertRaises(ValueError, self.loads, dumped)
|
|
|
|
def test_badly_escaped_string(self):
|
|
self.assertRaises(ValueError, self.loads, b"S'\\'\n.")
|
|
|
|
def test_badly_quoted_string(self):
|
|
# Issue #17710
|
|
badpickles = [b"S'\n.",
|
|
b'S"\n.',
|
|
b'S\' \n.',
|
|
b'S" \n.',
|
|
b'S\'"\n.',
|
|
b'S"\'\n.',
|
|
b"S' ' \n.",
|
|
b'S" " \n.',
|
|
b"S ''\n.",
|
|
b'S ""\n.',
|
|
b'S \n.',
|
|
b'S\n.',
|
|
b'S.']
|
|
for p in badpickles:
|
|
self.assertRaises(pickle.UnpicklingError, self.loads, p)
|
|
|
|
def test_correctly_quoted_string(self):
|
|
goodpickles = [(b"S''\n.", ''),
|
|
(b'S""\n.', ''),
|
|
(b'S"\\n"\n.', '\n'),
|
|
(b"S'\\n'\n.", '\n')]
|
|
for p, expected in goodpickles:
|
|
self.assertEqual(self.loads(p), expected)
|
|
|
|
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)
|
|
|
|
# Exercise framing (proto >= 4) for significant workloads
|
|
|
|
FRAME_SIZE_TARGET = 64 * 1024
|
|
|
|
def check_frame_opcodes(self, pickled):
|
|
"""
|
|
Check the arguments of FRAME opcodes in a protocol 4+ pickle.
|
|
"""
|
|
frame_opcode_size = 9
|
|
last_arg = last_pos = None
|
|
for op, arg, pos in pickletools.genops(pickled):
|
|
if op.name != 'FRAME':
|
|
continue
|
|
if last_pos is not None:
|
|
# The previous frame's size should be equal to the number
|
|
# of bytes up to the current frame.
|
|
frame_size = pos - last_pos - frame_opcode_size
|
|
self.assertEqual(frame_size, last_arg)
|
|
last_arg, last_pos = arg, pos
|
|
# The last frame's size should be equal to the number of bytes up
|
|
# to the pickle's end.
|
|
frame_size = len(pickled) - last_pos - frame_opcode_size
|
|
self.assertEqual(frame_size, last_arg)
|
|
|
|
def test_framing_many_objects(self):
|
|
obj = list(range(10**5))
|
|
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.subTest(proto=proto):
|
|
pickled = self.dumps(obj, proto)
|
|
unpickled = self.loads(pickled)
|
|
self.assertEqual(obj, unpickled)
|
|
bytes_per_frame = (len(pickled) /
|
|
count_opcode(pickle.FRAME, pickled))
|
|
self.assertGreater(bytes_per_frame,
|
|
self.FRAME_SIZE_TARGET / 2)
|
|
self.assertLessEqual(bytes_per_frame,
|
|
self.FRAME_SIZE_TARGET * 1)
|
|
self.check_frame_opcodes(pickled)
|
|
|
|
def test_framing_large_objects(self):
|
|
N = 1024 * 1024
|
|
obj = [b'x' * N, b'y' * N, b'z' * N]
|
|
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.subTest(proto=proto):
|
|
pickled = self.dumps(obj, proto)
|
|
unpickled = self.loads(pickled)
|
|
self.assertEqual(obj, unpickled)
|
|
n_frames = count_opcode(pickle.FRAME, pickled)
|
|
self.assertGreaterEqual(n_frames, len(obj))
|
|
self.check_frame_opcodes(pickled)
|
|
|
|
def test_optional_frames(self):
|
|
if pickle.HIGHEST_PROTOCOL < 4:
|
|
return
|
|
|
|
def remove_frames(pickled, keep_frame=None):
|
|
"""Remove frame opcodes from the given pickle."""
|
|
frame_starts = []
|
|
# 1 byte for the opcode and 8 for the argument
|
|
frame_opcode_size = 9
|
|
for opcode, _, pos in pickletools.genops(pickled):
|
|
if opcode.name == 'FRAME':
|
|
frame_starts.append(pos)
|
|
|
|
newpickle = bytearray()
|
|
last_frame_end = 0
|
|
for i, pos in enumerate(frame_starts):
|
|
if keep_frame and keep_frame(i):
|
|
continue
|
|
newpickle += pickled[last_frame_end:pos]
|
|
last_frame_end = pos + frame_opcode_size
|
|
newpickle += pickled[last_frame_end:]
|
|
return newpickle
|
|
|
|
frame_size = self.FRAME_SIZE_TARGET
|
|
num_frames = 20
|
|
obj = [bytes([i]) * frame_size for i in range(num_frames)]
|
|
|
|
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
|
|
pickled = self.dumps(obj, proto)
|
|
|
|
frameless_pickle = remove_frames(pickled)
|
|
self.assertEqual(count_opcode(pickle.FRAME, frameless_pickle), 0)
|
|
self.assertEqual(obj, self.loads(frameless_pickle))
|
|
|
|
some_frames_pickle = remove_frames(pickled, lambda i: i % 2)
|
|
self.assertLess(count_opcode(pickle.FRAME, some_frames_pickle),
|
|
count_opcode(pickle.FRAME, pickled))
|
|
self.assertEqual(obj, self.loads(some_frames_pickle))
|
|
|
|
def test_nested_names(self):
|
|
global Nested
|
|
class Nested:
|
|
class A:
|
|
class B:
|
|
class C:
|
|
pass
|
|
|
|
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
|
|
for obj in [Nested.A, Nested.A.B, Nested.A.B.C]:
|
|
with self.subTest(proto=proto, obj=obj):
|
|
unpickled = self.loads(self.dumps(obj, proto))
|
|
self.assertIs(obj, unpickled)
|
|
|
|
def test_py_methods(self):
|
|
global PyMethodsTest
|
|
class PyMethodsTest:
|
|
@staticmethod
|
|
def cheese():
|
|
return "cheese"
|
|
@classmethod
|
|
def wine(cls):
|
|
assert cls is PyMethodsTest
|
|
return "wine"
|
|
def biscuits(self):
|
|
assert isinstance(self, PyMethodsTest)
|
|
return "biscuits"
|
|
class Nested:
|
|
"Nested class"
|
|
@staticmethod
|
|
def ketchup():
|
|
return "ketchup"
|
|
@classmethod
|
|
def maple(cls):
|
|
assert cls is PyMethodsTest.Nested
|
|
return "maple"
|
|
def pie(self):
|
|
assert isinstance(self, PyMethodsTest.Nested)
|
|
return "pie"
|
|
|
|
py_methods = (
|
|
PyMethodsTest.cheese,
|
|
PyMethodsTest.wine,
|
|
PyMethodsTest().biscuits,
|
|
PyMethodsTest.Nested.ketchup,
|
|
PyMethodsTest.Nested.maple,
|
|
PyMethodsTest.Nested().pie
|
|
)
|
|
py_unbound_methods = (
|
|
(PyMethodsTest.biscuits, PyMethodsTest),
|
|
(PyMethodsTest.Nested.pie, PyMethodsTest.Nested)
|
|
)
|
|
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
|
|
for method in py_methods:
|
|
with self.subTest(proto=proto, method=method):
|
|
unpickled = self.loads(self.dumps(method, proto))
|
|
self.assertEqual(method(), unpickled())
|
|
for method, cls in py_unbound_methods:
|
|
obj = cls()
|
|
with self.subTest(proto=proto, method=method):
|
|
unpickled = self.loads(self.dumps(method, proto))
|
|
self.assertEqual(method(obj), unpickled(obj))
|
|
|
|
|
|
def test_c_methods(self):
|
|
global Subclass
|
|
class Subclass(tuple):
|
|
class Nested(str):
|
|
pass
|
|
|
|
c_methods = (
|
|
# bound built-in method
|
|
("abcd".index, ("c",)),
|
|
# unbound built-in method
|
|
(str.index, ("abcd", "c")),
|
|
# bound "slot" method
|
|
([1, 2, 3].__len__, ()),
|
|
# unbound "slot" method
|
|
(list.__len__, ([1, 2, 3],)),
|
|
# bound "coexist" method
|
|
({1, 2}.__contains__, (2,)),
|
|
# unbound "coexist" method
|
|
(set.__contains__, ({1, 2}, 2)),
|
|
# built-in class method
|
|
(dict.fromkeys, (("a", 1), ("b", 2))),
|
|
# built-in static method
|
|
(bytearray.maketrans, (b"abc", b"xyz")),
|
|
# subclass methods
|
|
(Subclass([1,2,2]).count, (2,)),
|
|
(Subclass.count, (Subclass([1,2,2]), 2)),
|
|
(Subclass.Nested("sweet").count, ("e",)),
|
|
(Subclass.Nested.count, (Subclass.Nested("sweet"), "e")),
|
|
)
|
|
for proto in range(4, pickle.HIGHEST_PROTOCOL + 1):
|
|
for method, args in c_methods:
|
|
with self.subTest(proto=proto, method=method):
|
|
unpickled = self.loads(self.dumps(method, proto))
|
|
self.assertEqual(method(*args), unpickled(*args))
|
|
|
|
|
|
class BigmemPickleTests(unittest.TestCase):
|
|
|
|
# Binary protocols can serialize longs of up to 2GB-1
|
|
|
|
@bigmemtest(size=_2G, memuse=1 + 1, dry_run=False)
|
|
def test_huge_long_32b(self, size):
|
|
data = 1 << (8 * size)
|
|
try:
|
|
for proto in protocols:
|
|
if proto < 2:
|
|
continue
|
|
with self.subTest(proto=proto):
|
|
with self.assertRaises((ValueError, OverflowError)):
|
|
self.dumps(data, protocol=proto)
|
|
finally:
|
|
data = None
|
|
|
|
# Protocol 3 can serialize up to 4GB-1 as a bytes object
|
|
# (older protocols don't have a dedicated opcode for bytes and are
|
|
# too inefficient)
|
|
|
|
@bigmemtest(size=_2G, memuse=1 + 1, dry_run=False)
|
|
def test_huge_bytes_32b(self, size):
|
|
data = b"abcd" * (size // 4)
|
|
try:
|
|
for proto in protocols:
|
|
if proto < 3:
|
|
continue
|
|
with self.subTest(proto=proto):
|
|
try:
|
|
pickled = self.dumps(data, protocol=proto)
|
|
header = (pickle.BINBYTES +
|
|
struct.pack("<I", len(data)))
|
|
data_start = pickled.index(data)
|
|
self.assertEqual(
|
|
header,
|
|
pickled[data_start-len(header):data_start])
|
|
finally:
|
|
pickled = None
|
|
finally:
|
|
data = None
|
|
|
|
@bigmemtest(size=_4G, memuse=1 + 1, dry_run=False)
|
|
def test_huge_bytes_64b(self, size):
|
|
data = b"acbd" * (size // 4)
|
|
try:
|
|
for proto in protocols:
|
|
if proto < 3:
|
|
continue
|
|
with self.subTest(proto=proto):
|
|
if proto == 3:
|
|
# Protocol 3 does not support large bytes objects.
|
|
# Verify that we do not crash when processing one.
|
|
with self.assertRaises((ValueError, OverflowError)):
|
|
self.dumps(data, protocol=proto)
|
|
continue
|
|
try:
|
|
pickled = self.dumps(data, protocol=proto)
|
|
header = (pickle.BINBYTES8 +
|
|
struct.pack("<Q", len(data)))
|
|
data_start = pickled.index(data)
|
|
self.assertEqual(
|
|
header,
|
|
pickled[data_start-len(header):data_start])
|
|
finally:
|
|
pickled = None
|
|
finally:
|
|
data = None
|
|
|
|
# All protocols use 1-byte per printable ASCII character; we add another
|
|
# byte because the encoded form has to be copied into the internal buffer.
|
|
|
|
@bigmemtest(size=_2G, memuse=2 + ascii_char_size, dry_run=False)
|
|
def test_huge_str_32b(self, size):
|
|
data = "abcd" * (size // 4)
|
|
try:
|
|
for proto in protocols:
|
|
if proto == 0:
|
|
continue
|
|
with self.subTest(proto=proto):
|
|
try:
|
|
pickled = self.dumps(data, protocol=proto)
|
|
header = (pickle.BINUNICODE +
|
|
struct.pack("<I", len(data)))
|
|
data_start = pickled.index(b'abcd')
|
|
self.assertEqual(
|
|
header,
|
|
pickled[data_start-len(header):data_start])
|
|
self.assertEqual((pickled.rindex(b"abcd") + len(b"abcd") -
|
|
pickled.index(b"abcd")), len(data))
|
|
finally:
|
|
pickled = None
|
|
finally:
|
|
data = None
|
|
|
|
# BINUNICODE (protocols 1, 2 and 3) cannot carry more than 2**32 - 1 bytes
|
|
# of utf-8 encoded unicode. BINUNICODE8 (protocol 4) supports these huge
|
|
# unicode strings however.
|
|
|
|
@bigmemtest(size=_4G, memuse=2 + ascii_char_size, dry_run=False)
|
|
def test_huge_str_64b(self, size):
|
|
data = "abcd" * (size // 4)
|
|
try:
|
|
for proto in protocols:
|
|
if proto == 0:
|
|
continue
|
|
with self.subTest(proto=proto):
|
|
if proto < 4:
|
|
with self.assertRaises((ValueError, OverflowError)):
|
|
self.dumps(data, protocol=proto)
|
|
continue
|
|
try:
|
|
pickled = self.dumps(data, protocol=proto)
|
|
header = (pickle.BINUNICODE8 +
|
|
struct.pack("<Q", len(data)))
|
|
data_start = pickled.index(b'abcd')
|
|
self.assertEqual(
|
|
header,
|
|
pickled[data_start-len(header):data_start])
|
|
self.assertEqual((pickled.rindex(b"abcd") + len(b"abcd") -
|
|
pickled.index(b"abcd")), len(data))
|
|
finally:
|
|
pickled = None
|
|
finally:
|
|
data = None
|
|
|
|
|
|
# Test classes for reduce_ex
|
|
|
|
class REX_one(object):
|
|
"""No __reduce_ex__ here, but inheriting it from object"""
|
|
_reduce_called = 0
|
|
def __reduce__(self):
|
|
self._reduce_called = 1
|
|
return REX_one, ()
|
|
|
|
class REX_two(object):
|
|
"""No __reduce__ here, but inheriting it from object"""
|
|
_proto = None
|
|
def __reduce_ex__(self, proto):
|
|
self._proto = proto
|
|
return REX_two, ()
|
|
|
|
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):
|
|
"""Calling base class method should succeed"""
|
|
_proto = None
|
|
def __reduce_ex__(self, proto):
|
|
self._proto = proto
|
|
return object.__reduce_ex__(self, proto)
|
|
|
|
class REX_five(object):
|
|
"""This one used to fail with infinite recursion"""
|
|
_reduce_called = 0
|
|
def __reduce__(self):
|
|
self._reduce_called = 1
|
|
return object.__reduce__(self)
|
|
|
|
class REX_six(object):
|
|
"""This class is used to check the 4th argument (list iterator) of
|
|
the reduce protocol.
|
|
"""
|
|
def __init__(self, items=None):
|
|
self.items = items if items is not None else []
|
|
def __eq__(self, other):
|
|
return type(self) is type(other) and self.items == self.items
|
|
def append(self, item):
|
|
self.items.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):
|
|
self.table = table if table is not None else {}
|
|
def __eq__(self, other):
|
|
return type(self) is type(other) and self.table == self.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 MyFloat(float):
|
|
sample = 1.0
|
|
|
|
class MyComplex(complex):
|
|
sample = 1.0 + 0.0j
|
|
|
|
class MyStr(str):
|
|
sample = "hello"
|
|
|
|
class MyUnicode(str):
|
|
sample = "hello \u1234"
|
|
|
|
class MyTuple(tuple):
|
|
sample = (1, 2, 3)
|
|
|
|
class MyList(list):
|
|
sample = [1, 2, 3]
|
|
|
|
class MyDict(dict):
|
|
sample = {"a": 1, "b": 2}
|
|
|
|
class MySet(set):
|
|
sample = {"a", "b"}
|
|
|
|
class MyFrozenSet(frozenset):
|
|
sample = frozenset({"a", "b"})
|
|
|
|
myclasses = [MyInt, MyFloat,
|
|
MyComplex,
|
|
MyStr, MyUnicode,
|
|
MyTuple, MyList, MyDict, MySet, MyFrozenSet]
|
|
|
|
|
|
class SlotList(MyList):
|
|
__slots__ = ["foo"]
|
|
|
|
class SimpleNewObj(object):
|
|
def __init__(self, a, b, c):
|
|
# 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 self.__dict__ == other.__dict__
|
|
|
|
class BadGetattr:
|
|
def __getattr__(self, key):
|
|
self.foo
|
|
|
|
|
|
class AbstractPickleModuleTests(unittest.TestCase):
|
|
|
|
def test_dump_closed_file(self):
|
|
import os
|
|
f = open(TESTFN, "wb")
|
|
try:
|
|
f.close()
|
|
self.assertRaises(ValueError, pickle.dump, 123, f)
|
|
finally:
|
|
os.remove(TESTFN)
|
|
|
|
def test_load_closed_file(self):
|
|
import os
|
|
f = open(TESTFN, "wb")
|
|
try:
|
|
f.close()
|
|
self.assertRaises(ValueError, pickle.dump, 123, f)
|
|
finally:
|
|
os.remove(TESTFN)
|
|
|
|
def test_load_from_and_dump_to_file(self):
|
|
stream = io.BytesIO()
|
|
data = [123, {}, 124]
|
|
pickle.dump(data, stream)
|
|
stream.seek(0)
|
|
unpickled = pickle.load(stream)
|
|
self.assertEqual(unpickled, data)
|
|
|
|
def test_highest_protocol(self):
|
|
# Of course this needs to be changed when HIGHEST_PROTOCOL changes.
|
|
self.assertEqual(pickle.HIGHEST_PROTOCOL, 4)
|
|
|
|
def test_callapi(self):
|
|
f = io.BytesIO()
|
|
# With and without keyword arguments
|
|
pickle.dump(123, f, -1)
|
|
pickle.dump(123, file=f, protocol=-1)
|
|
pickle.dumps(123, -1)
|
|
pickle.dumps(123, protocol=-1)
|
|
pickle.Pickler(f, -1)
|
|
pickle.Pickler(f, protocol=-1)
|
|
|
|
def test_bad_init(self):
|
|
# Test issue3664 (pickle can segfault from a badly initialized Pickler).
|
|
# Override initialization without calling __init__() of the superclass.
|
|
class BadPickler(pickle.Pickler):
|
|
def __init__(self): pass
|
|
|
|
class BadUnpickler(pickle.Unpickler):
|
|
def __init__(self): pass
|
|
|
|
self.assertRaises(pickle.PicklingError, BadPickler().dump, 0)
|
|
self.assertRaises(pickle.UnpicklingError, BadUnpickler().load)
|
|
|
|
def test_bad_input(self):
|
|
# Test issue4298
|
|
s = bytes([0x58, 0, 0, 0, 0x54])
|
|
self.assertRaises(EOFError, pickle.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 = list(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):
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|
# To test whether clear_memo() has any effect, we pickle an object,
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|
# 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.
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|
data = ["abcdefg", "abcdefg", 44]
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|
f = io.BytesIO()
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|
pickler = self.pickler_class(f)
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|
|
|
pickler.dump(data)
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|
first_pickled = f.getvalue()
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|
|
|
# Reset BytesIO object.
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|
f.seek(0)
|
|
f.truncate()
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|
|
|
pickler.dump(data)
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|
second_pickled = f.getvalue()
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|
|
|
# Reset the Pickler and BytesIO objects.
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|
pickler.clear_memo()
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|
f.seek(0)
|
|
f.truncate()
|
|
|
|
pickler.dump(data)
|
|
third_pickled = f.getvalue()
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|
|
|
self.assertNotEqual(first_pickled, second_pickled)
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|
self.assertEqual(first_pickled, third_pickled)
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|
|
|
def test_priming_pickler_memo(self):
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|
# Verify that we can set the Pickler's memo attribute.
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|
data = ["abcdefg", "abcdefg", 44]
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|
f = io.BytesIO()
|
|
pickler = self.pickler_class(f)
|
|
|
|
pickler.dump(data)
|
|
first_pickled = f.getvalue()
|
|
|
|
f = io.BytesIO()
|
|
primed = self.pickler_class(f)
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|
primed.memo = pickler.memo
|
|
|
|
primed.dump(data)
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|
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 = io.BytesIO()
|
|
pickler = self.pickler_class(f)
|
|
|
|
pickler.dump(data)
|
|
first_pickled = f.getvalue()
|
|
|
|
f = io.BytesIO()
|
|
primed = self.pickler_class(f)
|
|
primed.memo = pickler.memo
|
|
|
|
primed.dump(data)
|
|
primed_pickled = f.getvalue()
|
|
|
|
unpickler = self.unpickler_class(io.BytesIO(first_pickled))
|
|
unpickled_data1 = unpickler.load()
|
|
|
|
self.assertEqual(unpickled_data1, data)
|
|
|
|
primed = self.unpickler_class(io.BytesIO(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 = io.BytesIO()
|
|
pickler = self.pickler_class(f)
|
|
pickler.dump(data1)
|
|
pickled1 = f.getvalue()
|
|
|
|
data2 = ["abcdefg", 44, 44]
|
|
f = io.BytesIO()
|
|
pickler = self.pickler_class(f)
|
|
pickler.dump(data2)
|
|
pickled2 = f.getvalue()
|
|
|
|
f = io.BytesIO()
|
|
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):
|
|
for proto in protocols:
|
|
with self.subTest(proto=proto):
|
|
data1 = [(x, str(x)) for x in range(2000)] + [b"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 range(N):
|
|
if f.seekable():
|
|
pos = f.tell()
|
|
self.assertEqual(unpickler.load(), data1)
|
|
if f.seekable():
|
|
self.assertEqual(f.tell(), pos + len(pickled))
|
|
self.assertRaises(EOFError, unpickler.load)
|
|
|
|
def test_multiple_unpicklings_seekable(self):
|
|
self._check_multiple_unpicklings(io.BytesIO)
|
|
|
|
def test_multiple_unpicklings_unseekable(self):
|
|
self._check_multiple_unpicklings(UnseekableIO)
|
|
|
|
def test_unpickling_buffering_readline(self):
|
|
# Issue #12687: the unpickler's buffering logic could fail with
|
|
# text mode opcodes.
|
|
data = list(range(10))
|
|
for proto in protocols:
|
|
for buf_size in range(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)
|
|
|
|
|
|
# Tests for dispatch_table attribute
|
|
|
|
REDUCE_A = 'reduce_A'
|
|
|
|
class AAA(object):
|
|
def __reduce__(self):
|
|
return str, (REDUCE_A,)
|
|
|
|
class BBB(object):
|
|
pass
|
|
|
|
class AbstractDispatchTableTests(unittest.TestCase):
|
|
|
|
def test_default_dispatch_table(self):
|
|
# No dispatch_table attribute by default
|
|
f = io.BytesIO()
|
|
p = self.pickler_class(f, 0)
|
|
with self.assertRaises(AttributeError):
|
|
p.dispatch_table
|
|
self.assertFalse(hasattr(p, 'dispatch_table'))
|
|
|
|
def test_class_dispatch_table(self):
|
|
# A dispatch_table attribute can be specified class-wide
|
|
dt = self.get_dispatch_table()
|
|
|
|
class MyPickler(self.pickler_class):
|
|
dispatch_table = dt
|
|
|
|
def dumps(obj, protocol=None):
|
|
f = io.BytesIO()
|
|
p = MyPickler(f, protocol)
|
|
self.assertEqual(p.dispatch_table, dt)
|
|
p.dump(obj)
|
|
return f.getvalue()
|
|
|
|
self._test_dispatch_table(dumps, dt)
|
|
|
|
def test_instance_dispatch_table(self):
|
|
# A dispatch_table attribute can also be specified instance-wide
|
|
dt = self.get_dispatch_table()
|
|
|
|
def dumps(obj, protocol=None):
|
|
f = io.BytesIO()
|
|
p = self.pickler_class(f, protocol)
|
|
p.dispatch_table = dt
|
|
self.assertEqual(p.dispatch_table, dt)
|
|
p.dump(obj)
|
|
return f.getvalue()
|
|
|
|
self._test_dispatch_table(dumps, dt)
|
|
|
|
def _test_dispatch_table(self, dumps, dispatch_table):
|
|
def custom_load_dump(obj):
|
|
return pickle.loads(dumps(obj, 0))
|
|
|
|
def default_load_dump(obj):
|
|
return pickle.loads(pickle.dumps(obj, 0))
|
|
|
|
# pickling complex numbers using protocol 0 relies on copyreg
|
|
# so check pickling a complex number still works
|
|
z = 1 + 2j
|
|
self.assertEqual(custom_load_dump(z), z)
|
|
self.assertEqual(default_load_dump(z), z)
|
|
|
|
# modify pickling of complex
|
|
REDUCE_1 = 'reduce_1'
|
|
def reduce_1(obj):
|
|
return str, (REDUCE_1,)
|
|
dispatch_table[complex] = reduce_1
|
|
self.assertEqual(custom_load_dump(z), REDUCE_1)
|
|
self.assertEqual(default_load_dump(z), z)
|
|
|
|
# check picklability of AAA and BBB
|
|
a = AAA()
|
|
b = BBB()
|
|
self.assertEqual(custom_load_dump(a), REDUCE_A)
|
|
self.assertIsInstance(custom_load_dump(b), BBB)
|
|
self.assertEqual(default_load_dump(a), REDUCE_A)
|
|
self.assertIsInstance(default_load_dump(b), BBB)
|
|
|
|
# modify pickling of BBB
|
|
dispatch_table[BBB] = reduce_1
|
|
self.assertEqual(custom_load_dump(a), REDUCE_A)
|
|
self.assertEqual(custom_load_dump(b), REDUCE_1)
|
|
self.assertEqual(default_load_dump(a), REDUCE_A)
|
|
self.assertIsInstance(default_load_dump(b), BBB)
|
|
|
|
# revert pickling of BBB and modify pickling of AAA
|
|
REDUCE_2 = 'reduce_2'
|
|
def reduce_2(obj):
|
|
return str, (REDUCE_2,)
|
|
dispatch_table[AAA] = reduce_2
|
|
del dispatch_table[BBB]
|
|
self.assertEqual(custom_load_dump(a), REDUCE_2)
|
|
self.assertIsInstance(custom_load_dump(b), BBB)
|
|
self.assertEqual(default_load_dump(a), REDUCE_A)
|
|
self.assertIsInstance(default_load_dump(b), BBB)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
# Print some stuff that can be used to rewrite DATA{0,1,2}
|
|
from pickletools import dis
|
|
x = create_data()
|
|
for i in range(3):
|
|
p = pickle.dumps(x, i)
|
|
print("DATA{0} = (".format(i))
|
|
for j in range(0, len(p), 20):
|
|
b = bytes(p[j:j+20])
|
|
print(" {0!r}".format(b))
|
|
print(")")
|
|
print()
|
|
print("# Disassembly of DATA{0}".format(i))
|
|
print("DATA{0}_DIS = \"\"\"\\".format(i))
|
|
dis(p)
|
|
print("\"\"\"")
|
|
print()
|