| import copyreg |
| import io |
| import pickle |
| import pickletools |
| import random |
| import struct |
| import sys |
| import unittest |
| import weakref |
| from http.cookies import SimpleCookie |
| |
| from test.support import ( |
| TestFailed, TESTFN, run_with_locale, no_tracing, |
| _2G, _4G, bigmemtest, |
| ) |
| |
| from pickle import bytes_types |
| |
| # Tests that try a number of pickle protocols should have a |
| # for proto in protocols: |
| # kind of outer loop. |
| protocols = range(pickle.HIGHEST_PROTOCOL + 1) |
| |
| |
| # 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.decode("latin-1"): |
| 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.decode("latin-1"): |
| n += 1 |
| return n |
| |
| |
| class UnseekableIO(io.BytesIO): |
| def peek(self, *args): |
| raise NotImplementedError |
| |
| def seekable(self): |
| return False |
| |
| def seek(self, *args): |
| raise io.UnsupportedOperation |
| |
| def tell(self): |
| raise io.UnsupportedOperation |
| |
| |
| # 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 copyreg._inverted_registry: |
| self.pair = copyreg._inverted_registry[code] |
| copyreg.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 = copyreg._inverted_registry.get(code) |
| if curpair is not None: |
| copyreg.remove_extension(curpair[0], curpair[1], code) |
| pair = self.pair |
| if pair is not None: |
| copyreg.add_extension(pair[0], pair[1], code) |
| |
| class C: |
| def __eq__(self, other): |
| return self.__dict__ == other.__dict__ |
| |
| class D(C): |
| def __init__(self, arg): |
| pass |
| |
| class E(C): |
| def __getinitargs__(self): |
| return () |
| |
| class H(object): |
| pass |
| |
| 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__" |
| |
| 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): |
| pass |
| |
| 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) |
| |
| 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(). |
| |
| DATA0 = ( |
| b'(lp0\nL0L\naL1L\naF2.0\n' |
| b'ac__builtin__\ncomple' |
| b'x\np1\n(F3.0\nF0.0\ntp2\n' |
| b'Rp3\naL1L\naL-1L\naL255' |
| b'L\naL-255L\naL-256L\naL' |
| b'65535L\naL-65535L\naL-' |
| b'65536L\naL2147483647L' |
| b'\naL-2147483647L\naL-2' |
| b'147483648L\na(Vabc\np4' |
| b'\ng4\nccopy_reg\n_recon' |
| b'structor\np5\n(c__main' |
| b'__\nC\np6\nc__builtin__' |
| b'\nobject\np7\nNtp8\nRp9\n' |
| b'(dp10\nVfoo\np11\nL1L\ns' |
| b'Vbar\np12\nL2L\nsbg9\ntp' |
| b'13\nag13\naL5L\na.' |
| ) |
| |
| # Disassembly of DATA0 |
| DATA0_DIS = """\ |
| 0: ( MARK |
| 1: l LIST (MARK at 0) |
| 2: p PUT 0 |
| 5: L LONG 0 |
| 9: a APPEND |
| 10: L LONG 1 |
| 14: a APPEND |
| 15: F FLOAT 2.0 |
| 20: a APPEND |
| 21: c GLOBAL '__builtin__ complex' |
| 42: p PUT 1 |
| 45: ( MARK |
| 46: F FLOAT 3.0 |
| 51: F FLOAT 0.0 |
| 56: t TUPLE (MARK at 45) |
| 57: p PUT 2 |
| 60: R REDUCE |
| 61: p PUT 3 |
| 64: a APPEND |
| 65: L LONG 1 |
| 69: a APPEND |
| 70: L LONG -1 |
| 75: a APPEND |
| 76: L LONG 255 |
| 82: a APPEND |
| 83: L LONG -255 |
| 90: a APPEND |
| 91: L LONG -256 |
| 98: a APPEND |
| 99: L LONG 65535 |
| 107: a APPEND |
| 108: L LONG -65535 |
| 117: a APPEND |
| 118: L LONG -65536 |
| 127: a APPEND |
| 128: L LONG 2147483647 |
| 141: a APPEND |
| 142: L LONG -2147483647 |
| 156: a APPEND |
| 157: L LONG -2147483648 |
| 171: a APPEND |
| 172: ( MARK |
| 173: V UNICODE 'abc' |
| 178: p PUT 4 |
| 181: g GET 4 |
| 184: c GLOBAL 'copy_reg _reconstructor' |
| 209: p PUT 5 |
| 212: ( MARK |
| 213: c GLOBAL '__main__ C' |
| 225: p PUT 6 |
| 228: c GLOBAL '__builtin__ object' |
| 248: p PUT 7 |
| 251: N NONE |
| 252: t TUPLE (MARK at 212) |
| 253: p PUT 8 |
| 256: R REDUCE |
| 257: p PUT 9 |
| 260: ( MARK |
| 261: d DICT (MARK at 260) |
| 262: p PUT 10 |
| 266: V UNICODE 'foo' |
| 271: p PUT 11 |
| 275: L LONG 1 |
| 279: s SETITEM |
| 280: V UNICODE 'bar' |
| 285: p PUT 12 |
| 289: L LONG 2 |
| 293: s SETITEM |
| 294: b BUILD |
| 295: g GET 9 |
| 298: t TUPLE (MARK at 172) |
| 299: p PUT 13 |
| 303: a APPEND |
| 304: g GET 13 |
| 308: a APPEND |
| 309: L LONG 5 |
| 313: a APPEND |
| 314: . STOP |
| highest protocol among opcodes = 0 |
| """ |
| |
| DATA1 = ( |
| b']q\x00(K\x00K\x01G@\x00\x00\x00\x00\x00\x00\x00c__' |
| b'builtin__\ncomplex\nq\x01' |
| b'(G@\x08\x00\x00\x00\x00\x00\x00G\x00\x00\x00\x00\x00\x00\x00\x00t' |
| b'q\x02Rq\x03K\x01J\xff\xff\xff\xffK\xffJ\x01\xff\xff\xffJ' |
| b'\x00\xff\xff\xffM\xff\xffJ\x01\x00\xff\xffJ\x00\x00\xff\xffJ\xff\xff' |
| b'\xff\x7fJ\x01\x00\x00\x80J\x00\x00\x00\x80(X\x03\x00\x00\x00ab' |
| b'cq\x04h\x04ccopy_reg\n_reco' |
| b'nstructor\nq\x05(c__main' |
| b'__\nC\nq\x06c__builtin__\n' |
| b'object\nq\x07Ntq\x08Rq\t}q\n(' |
| b'X\x03\x00\x00\x00fooq\x0bK\x01X\x03\x00\x00\x00bar' |
| b'q\x0cK\x02ubh\ttq\rh\rK\x05e.' |
| ) |
| |
| # Disassembly of DATA1 |
| DATA1_DIS = """\ |
| 0: ] EMPTY_LIST |
| 1: q BINPUT 0 |
| 3: ( MARK |
| 4: K BININT1 0 |
| 6: K BININT1 1 |
| 8: G BINFLOAT 2.0 |
| 17: c GLOBAL '__builtin__ complex' |
| 38: q BINPUT 1 |
| 40: ( MARK |
| 41: G BINFLOAT 3.0 |
| 50: G BINFLOAT 0.0 |
| 59: t TUPLE (MARK at 40) |
| 60: q BINPUT 2 |
| 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: X BINUNICODE 'abc' |
| 121: q BINPUT 4 |
| 123: h BINGET 4 |
| 125: c GLOBAL 'copy_reg _reconstructor' |
| 150: q BINPUT 5 |
| 152: ( MARK |
| 153: c GLOBAL '__main__ C' |
| 165: q BINPUT 6 |
| 167: c GLOBAL '__builtin__ object' |
| 187: q BINPUT 7 |
| 189: N NONE |
| 190: t TUPLE (MARK at 152) |
| 191: q BINPUT 8 |
| 193: R REDUCE |
| 194: q BINPUT 9 |
| 196: } EMPTY_DICT |
| 197: q BINPUT 10 |
| 199: ( MARK |
| 200: X BINUNICODE 'foo' |
| 208: q BINPUT 11 |
| 210: K BININT1 1 |
| 212: X BINUNICODE 'bar' |
| 220: q BINPUT 12 |
| 222: K BININT1 2 |
| 224: u SETITEMS (MARK at 199) |
| 225: b BUILD |
| 226: h BINGET 9 |
| 228: t TUPLE (MARK at 112) |
| 229: q BINPUT 13 |
| 231: h BINGET 13 |
| 233: K BININT1 5 |
| 235: e APPENDS (MARK at 3) |
| 236: . STOP |
| highest protocol among opcodes = 1 |
| """ |
| |
| DATA2 = ( |
| b'\x80\x02]q\x00(K\x00K\x01G@\x00\x00\x00\x00\x00\x00\x00c' |
| b'__builtin__\ncomplex\n' |
| b'q\x01G@\x08\x00\x00\x00\x00\x00\x00G\x00\x00\x00\x00\x00\x00\x00\x00' |
| b'\x86q\x02Rq\x03K\x01J\xff\xff\xff\xffK\xffJ\x01\xff\xff\xff' |
| b'J\x00\xff\xff\xffM\xff\xffJ\x01\x00\xff\xffJ\x00\x00\xff\xffJ\xff' |
| b'\xff\xff\x7fJ\x01\x00\x00\x80J\x00\x00\x00\x80(X\x03\x00\x00\x00a' |
| b'bcq\x04h\x04c__main__\nC\nq\x05' |
| b')\x81q\x06}q\x07(X\x03\x00\x00\x00fooq\x08K\x01' |
| b'X\x03\x00\x00\x00barq\tK\x02ubh\x06tq\nh' |
| b'\nK\x05e.' |
| ) |
| |
| # Disassembly of DATA2 |
| DATA2_DIS = """\ |
| 0: \x80 PROTO 2 |
| 2: ] EMPTY_LIST |
| 3: q BINPUT 0 |
| 5: ( MARK |
| 6: K BININT1 0 |
| 8: K BININT1 1 |
| 10: G BINFLOAT 2.0 |
| 19: c GLOBAL '__builtin__ complex' |
| 40: q BINPUT 1 |
| 42: G BINFLOAT 3.0 |
| 51: G BINFLOAT 0.0 |
| 60: \x86 TUPLE2 |
| 61: q BINPUT 2 |
| 63: R REDUCE |
| 64: q BINPUT 3 |
| 66: K BININT1 1 |
| 68: J BININT -1 |
| 73: K BININT1 255 |
| 75: J BININT -255 |
| 80: J BININT -256 |
| 85: M BININT2 65535 |
| 88: J BININT -65535 |
| 93: J BININT -65536 |
| 98: J BININT 2147483647 |
| 103: J BININT -2147483647 |
| 108: J BININT -2147483648 |
| 113: ( MARK |
| 114: X BINUNICODE 'abc' |
| 122: q BINPUT 4 |
| 124: h BINGET 4 |
| 126: c GLOBAL '__main__ C' |
| 138: q BINPUT 5 |
| 140: ) EMPTY_TUPLE |
| 141: \x81 NEWOBJ |
| 142: q BINPUT 6 |
| 144: } EMPTY_DICT |
| 145: q BINPUT 7 |
| 147: ( MARK |
| 148: X BINUNICODE 'foo' |
| 156: q BINPUT 8 |
| 158: K BININT1 1 |
| 160: X BINUNICODE 'bar' |
| 168: q BINPUT 9 |
| 170: K BININT1 2 |
| 172: u SETITEMS (MARK at 147) |
| 173: b BUILD |
| 174: h BINGET 6 |
| 176: t TUPLE (MARK at 113) |
| 177: q BINPUT 10 |
| 179: h BINGET 10 |
| 181: K BININT1 5 |
| 183: e APPENDS (MARK at 5) |
| 184: . STOP |
| highest protocol among opcodes = 2 |
| """ |
| |
| # set([1,2]) pickled from 2.x with protocol 2 |
| DATA3 = b'\x80\x02c__builtin__\nset\nq\x00]q\x01(K\x01K\x02e\x85q\x02Rq\x03.' |
| |
| # xrange(5) pickled from 2.x with protocol 2 |
| DATA4 = b'\x80\x02c__builtin__\nxrange\nq\x00K\x00K\x05K\x01\x87q\x01Rq\x02.' |
| |
| # a SimpleCookie() object pickled from 2.x with protocol 2 |
| DATA5 = (b'\x80\x02cCookie\nSimpleCookie\nq\x00)\x81q\x01U\x03key' |
| b'q\x02cCookie\nMorsel\nq\x03)\x81q\x04(U\x07commentq\x05U' |
| b'\x00q\x06U\x06domainq\x07h\x06U\x06secureq\x08h\x06U\x07' |
| b'expiresq\th\x06U\x07max-ageq\nh\x06U\x07versionq\x0bh\x06U' |
| b'\x04pathq\x0ch\x06U\x08httponlyq\rh\x06u}q\x0e(U\x0b' |
| b'coded_valueq\x0fU\x05valueq\x10h\x10h\x10h\x02h\x02ubs}q\x11b.') |
| |
| # set([3]) pickled from 2.x with protocol 2 |
| DATA6 = b'\x80\x02c__builtin__\nset\nq\x00]q\x01K\x03a\x85q\x02Rq\x03.' |
| |
| python2_exceptions_without_args = ( |
| 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, |
| UserWarning, |
| ValueError, |
| Warning, |
| ZeroDivisionError, |
| ) |
| |
| exception_pickle = b'\x80\x02cexceptions\n?\nq\x00)Rq\x01.' |
| |
| # Exception objects without arguments pickled from 2.x with protocol 2 |
| DATA7 = { |
| exception : |
| exception_pickle.replace(b'?', exception.__name__.encode("ascii")) |
| for exception in python2_exceptions_without_args |
| } |
| |
| # StandardError is mapped to Exception, test that separately |
| DATA8 = exception_pickle.replace(b'?', b'StandardError') |
| |
| # 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) |
| 13: p PUT 0 |
| 16: ( MARK |
| 17: d DICT (MARK at 16) |
| 18: p PUT 1 |
| 21: b BUILD |
| 22: . 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' |
| 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 = (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' |
| 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 = (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): |
| for proto in protocols: |
| inst = AAA() |
| dumped = self.dumps(inst, proto) |
| loaded = self.loads(dumped) |
| self.assertEqual(loaded, REDUCE_A) |
| |
| def test_getinitargs(self): |
| for proto in protocols: |
| inst = initarg(1, 2) |
| dumped = self.dumps(inst, proto) |
| loaded = self.loads(dumped) |
| self.assert_is_copy(inst, loaded) |
| |
| 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 = SimpleNewObj.__new__(SimpleNewObj, 0xface) # avoid __init__ |
| x.abc = 666 |
| for proto in protocols: |
| with self.subTest(proto=proto): |
| s = self.dumps(x, proto) |
| if proto < 1: |
| self.assertIn(b'\nL64206', s) # LONG |
| else: |
| self.assertIn(b'M\xce\xfa', s) # BININT2 |
| self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), |
| 2 <= proto) |
| self.assertFalse(opcode_in_pickle(pickle.NEWOBJ_EX, s)) |
| y = self.loads(s) # will raise TypeError if __init__ called |
| self.assert_is_copy(x, y) |
| |
| def test_complex_newobj(self): |
| x = ComplexNewObj.__new__(ComplexNewObj, 0xface) # avoid __init__ |
| x.abc = 666 |
| for proto in protocols: |
| with self.subTest(proto=proto): |
| s = self.dumps(x, proto) |
| if proto < 1: |
| self.assertIn(b'\nL64206', s) # LONG |
| elif proto < 2: |
| self.assertIn(b'M\xce\xfa', s) # BININT2 |
| elif proto < 4: |
| self.assertIn(b'X\x04\x00\x00\x00FACE', s) # BINUNICODE |
| else: |
| self.assertIn(b'\x8c\x04FACE', s) # SHORT_BINUNICODE |
| self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), |
| 2 <= proto) |
| self.assertFalse(opcode_in_pickle(pickle.NEWOBJ_EX, s)) |
| y = self.loads(s) # will raise TypeError if __init__ called |
| self.assert_is_copy(x, y) |
| |
| def test_complex_newobj_ex(self): |
| x = ComplexNewObjEx.__new__(ComplexNewObjEx, 0xface) # avoid __init__ |
| x.abc = 666 |
| for proto in protocols: |
| with self.subTest(proto=proto): |
| if 2 <= proto < 4: |
| self.assertRaises(ValueError, self.dumps, x, proto) |
| continue |
| s = self.dumps(x, proto) |
| if proto < 1: |
| self.assertIn(b'\nL64206', s) # LONG |
| elif proto < 2: |
| self.assertIn(b'M\xce\xfa', s) # BININT2 |
| else: |
| assert proto >= 4 |
| self.assertIn(b'\x8c\x04FACE', s) # SHORT_BINUNICODE |
| self.assertFalse(opcode_in_pickle(pickle.NEWOBJ, s)) |
| self.assertEqual(opcode_in_pickle(pickle.NEWOBJ_EX, s), |
| 4 <= proto) |
| 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, "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_load_python2_str_as_bytes(self): |
| # From Python 2: pickle.dumps('a\x00\xa0', protocol=0) |
| self.assertEqual(self.loads(b"S'a\\x00\\xa0'\n.", |
| encoding="bytes"), b'a\x00\xa0') |
| # From Python 2: pickle.dumps('a\x00\xa0', protocol=1) |
| self.assertEqual(self.loads(b'U\x03a\x00\xa0.', |
| encoding="bytes"), b'a\x00\xa0') |
| # From Python 2: pickle.dumps('a\x00\xa0', protocol=2) |
| self.assertEqual(self.loads(b'\x80\x02U\x03a\x00\xa0.', |
| encoding="bytes"), b'a\x00\xa0') |
| |
| def test_load_python2_unicode_as_str(self): |
| # From Python 2: pickle.dumps(u'Ï€', protocol=0) |
| self.assertEqual(self.loads(b'V\\u03c0\n.', |
| encoding='bytes'), 'Ï€') |
| # From Python 2: pickle.dumps(u'Ï€', protocol=1) |
| self.assertEqual(self.loads(b'X\x02\x00\x00\x00\xcf\x80.', |
| encoding="bytes"), 'Ï€') |
| # From Python 2: pickle.dumps(u'Ï€', protocol=2) |
| self.assertEqual(self.loads(b'\x80\x02X\x02\x00\x00\x00\xcf\x80.', |
| encoding="bytes"), 'Ï€') |
| |
| def test_load_long_python2_str_as_bytes(self): |
| # From Python 2: pickle.dumps('x' * 300, protocol=1) |
| self.assertEqual(self.loads(pickle.BINSTRING + |
| struct.pack("<I", 300) + |
| b'x' * 300 + pickle.STOP, |
| encoding='bytes'), b'x' * 300) |
| |
| 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_frame_readline(self): |
| pickled = b'\x80\x04\x95\x05\x00\x00\x00\x00\x00\x00\x00I42\n.' |
| # 0: \x80 PROTO 4 |
| # 2: \x95 FRAME 5 |
| # 11: I INT 42 |
| # 15: . STOP |
| self.assertEqual(self.loads(pickled), 42) |
| |
| 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)) |
| |
| def test_local_lookup_error(self): |
| # Test that whichmodule() errors out cleanly when looking up |
| # an assumed globally-reachable object fails. |
| def f(): |
| pass |
| # Since the function is local, lookup will fail |
| for proto in range(0, pickle.HIGHEST_PROTOCOL + 1): |
| with self.assertRaises((AttributeError, pickle.PicklingError)): |
| pickletools.dis(self.dumps(f, proto)) |
| # Same without a __module__ attribute (exercises a different path |
| # in _pickle.c). |
| del f.__module__ |
| for proto in range(0, pickle.HIGHEST_PROTOCOL + 1): |
| with self.assertRaises((AttributeError, pickle.PicklingError)): |
| pickletools.dis(self.dumps(f, proto)) |
| # Yet a different path. |
| f.__name__ = f.__qualname__ |
| for proto in range(0, pickle.HIGHEST_PROTOCOL + 1): |
| with self.assertRaises((AttributeError, pickle.PicklingError)): |
| pickletools.dis(self.dumps(f, proto)) |
| |
| |
| class BigmemPickleTests(unittest.TestCase): |
| |
| # Binary protocols can serialize longs of up to 2GB-1 |
| |
| @bigmemtest(size=_2G, memuse=3.6, 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=2.5, 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=2.5, 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=8, 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=8, 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(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 ComplexNewObjEx(SimpleNewObj): |
| def __getnewargs_ex__(self): |
| return ('%X' % self,), {'base': 16} |
| |
| 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): |
| # 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 = io.BytesIO() |
| pickler = self.pickler_class(f) |
| |
| pickler.dump(data) |
| first_pickled = f.getvalue() |
| |
| # Reset BytesIO object. |
| f.seek(0) |
| f.truncate() |
| |
| pickler.dump(data) |
| second_pickled = f.getvalue() |
| |
| # Reset the Pickler and BytesIO 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 = 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() |
| |
| 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() |