import unittest import pickle import pickletools import copyreg from test.support import TestFailed, TESTFN, run_with_locale 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 # 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__ import __main__ __main__.C = C C.__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 # DATA0 .. DATA2 are the pickles we expect under the various protocols, for # the object returned by create_data(). DATA0 = ( b'(lp0\nL0\naL1\naF2.0\nac' b'builtins\ncomplex\n' b'p1\n(F3.0\nF0.0\ntp2\nRp' b'3\naL1\naL-1\naL255\naL-' b'255\naL-256\naL65535\na' b'L-65535\naL-65536\naL2' b'147483647\naL-2147483' b'647\naL-2147483648\na(' b'Vabc\np4\ng4\nccopyreg' b'\n_reconstructor\np5\n(' b'c__main__\nC\np6\ncbu' b'iltins\nobject\np7\nNt' b'p8\nRp9\n(dp10\nVfoo\np1' b'1\nL1\nsVbar\np12\nL2\nsb' b'g9\ntp13\nag13\naL5\na.' ) # Disassembly of DATA0 DATA0_DIS = """\ 0: ( MARK 1: l LIST (MARK at 0) 2: p PUT 0 5: L LONG 0 8: a APPEND 9: L LONG 1 12: a APPEND 13: F FLOAT 2.0 18: a APPEND 19: c GLOBAL 'builtins complex' 37: p PUT 1 40: ( MARK 41: F FLOAT 3.0 46: F FLOAT 0.0 51: t TUPLE (MARK at 40) 52: p PUT 2 55: R REDUCE 56: p PUT 3 59: a APPEND 60: L LONG 1 63: a APPEND 64: L LONG -1 68: a APPEND 69: L LONG 255 74: a APPEND 75: L LONG -255 81: a APPEND 82: L LONG -256 88: a APPEND 89: L LONG 65535 96: a APPEND 97: L LONG -65535 105: a APPEND 106: L LONG -65536 114: a APPEND 115: L LONG 2147483647 127: a APPEND 128: L LONG -2147483647 141: a APPEND 142: L LONG -2147483648 155: a APPEND 156: ( MARK 157: V UNICODE 'abc' 162: p PUT 4 165: g GET 4 168: c GLOBAL 'copyreg _reconstructor' 192: p PUT 5 195: ( MARK 196: c GLOBAL '__main__ C' 208: p PUT 6 211: c GLOBAL 'builtins object' 228: p PUT 7 231: N NONE 232: t TUPLE (MARK at 195) 233: p PUT 8 236: R REDUCE 237: p PUT 9 240: ( MARK 241: d DICT (MARK at 240) 242: p PUT 10 246: V UNICODE 'foo' 251: p PUT 11 255: L LONG 1 258: s SETITEM 259: V UNICODE 'bar' 264: p PUT 12 268: L LONG 2 271: s SETITEM 272: b BUILD 273: g GET 9 276: t TUPLE (MARK at 156) 277: p PUT 13 281: a APPEND 282: g GET 13 286: a APPEND 287: L LONG 5 290: a APPEND 291: . STOP highest protocol among opcodes = 0 """ DATA1 = ( b']q\x00(K\x00K\x01G@\x00\x00\x00\x00\x00\x00\x00c' b'builtins\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\x04ccopyreg\n_reco' b'nstructor\nq\x05(c__main' b'__\nC\nq\x06cbuiltins\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 'builtins complex' 35: q BINPUT 1 37: ( MARK 38: G BINFLOAT 3.0 47: G BINFLOAT 0.0 56: t TUPLE (MARK at 37) 57: q BINPUT 2 59: R REDUCE 60: q BINPUT 3 62: K BININT1 1 64: J BININT -1 69: K BININT1 255 71: J BININT -255 76: J BININT -256 81: M BININT2 65535 84: J BININT -65535 89: J BININT -65536 94: J BININT 2147483647 99: J BININT -2147483647 104: J BININT -2147483648 109: ( MARK 110: X BINUNICODE 'abc' 118: q BINPUT 4 120: h BINGET 4 122: c GLOBAL 'copyreg _reconstructor' 146: q BINPUT 5 148: ( MARK 149: c GLOBAL '__main__ C' 161: q BINPUT 6 163: c GLOBAL 'builtins object' 180: q BINPUT 7 182: N NONE 183: t TUPLE (MARK at 148) 184: q BINPUT 8 186: R REDUCE 187: q BINPUT 9 189: } EMPTY_DICT 190: q BINPUT 10 192: ( MARK 193: X BINUNICODE 'foo' 201: q BINPUT 11 203: K BININT1 1 205: X BINUNICODE 'bar' 213: q BINPUT 12 215: K BININT1 2 217: u SETITEMS (MARK at 192) 218: b BUILD 219: h BINGET 9 221: t TUPLE (MARK at 109) 222: q BINPUT 13 224: h BINGET 13 226: K BININT1 5 228: e APPENDS (MARK at 3) 229: . STOP highest protocol among opcodes = 1 """ DATA2 = ( b'\x80\x02]q\x00(K\x00K\x01G@\x00\x00\x00\x00\x00\x00\x00c' b'builtins\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 'builtins complex' 37: q BINPUT 1 39: G BINFLOAT 3.0 48: G BINFLOAT 0.0 57: \x86 TUPLE2 58: q BINPUT 2 60: R REDUCE 61: q BINPUT 3 63: K BININT1 1 65: J BININT -1 70: K BININT1 255 72: J BININT -255 77: J BININT -256 82: M BININT2 65535 85: J BININT -65535 90: J BININT -65536 95: J BININT 2147483647 100: J BININT -2147483647 105: J BININT -2147483648 110: ( MARK 111: X BINUNICODE 'abc' 119: q BINPUT 4 121: h BINGET 4 123: c GLOBAL '__main__ C' 135: q BINPUT 5 137: ) EMPTY_TUPLE 138: \x81 NEWOBJ 139: q BINPUT 6 141: } EMPTY_DICT 142: q BINPUT 7 144: ( MARK 145: X BINUNICODE 'foo' 153: q BINPUT 8 155: K BININT1 1 157: X BINUNICODE 'bar' 165: q BINPUT 9 167: K BININT1 2 169: u SETITEMS (MARK at 144) 170: b BUILD 171: h BINGET 6 173: t TUPLE (MARK at 110) 174: q BINPUT 10 176: h BINGET 10 178: K BININT1 5 180: e APPENDS (MARK at 5) 181: . STOP highest protocol among opcodes = 2 """ 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, self.error. _testdata = create_data() def setUp(self): pass def test_misc(self): # test various datatypes not tested by testdata for proto in protocols: x = myint(4) s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y) x = (1, ()) s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y) x = initarg(1, x) s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y) # XXX test __reduce__ protocol? def test_roundtrip_equality(self): expected = self._testdata for proto in protocols: s = self.dumps(expected, proto) got = self.loads(s) self.assertEqual(expected, got) def test_load_from_data0(self): self.assertEqual(self._testdata, self.loads(DATA0)) def test_load_from_data1(self): self.assertEqual(self._testdata, self.loads(DATA1)) def test_load_from_data2(self): self.assertEqual(self._testdata, self.loads(DATA2)) # 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.assertEqual(len(x), 1) self.assert_(x is x[0]) def test_recursive_dict(self): d = {} d[1] = d for proto in protocols: s = self.dumps(d, proto) x = self.loads(s) self.assertEqual(list(x.keys()), [1]) self.assert_(x[1] is x) def test_recursive_inst(self): i = C() i.attr = i for proto in protocols: s = self.dumps(i, 2) x = self.loads(s) self.assertEqual(dir(x), dir(i)) self.assert_(x.attr is 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.assertEqual(len(x), 1) self.assertEqual(dir(x[0]), dir(i)) self.assertEqual(list(x[0].attr.keys()), [1]) self.assert_(x[0].attr[1] is x) def test_garyp(self): self.assertRaises(self.error, self.loads, b'garyp') def test_insecure_strings(self): # XXX Some of these tests are temporarily disabled insecure = [b"abc", b"2 + 2", # not quoted ## b"'abc' + 'def'", # not a single quoted string b"'abc", # quote is not closed b"'abc\"", # open quote and close quote don't match b"'abc' ?", # junk after close quote b"'\\'", # trailing backslash # some tests of the quoting rules ## b"'abc\"\''", ## b"'\\\\a\'\'\'\\\'\\\\\''", ] for b in insecure: buf = b"S" + b + b"\012p0\012." self.assertRaises(ValueError, self.loads, buf) def test_unicode(self): endcases = ['', '<\\u>', '<\\\u1234>', '<\n>', '<\\>'] for proto in protocols: for u in endcases: p = self.dumps(u, proto) u2 = self.loads(p) self.assertEqual(u2, u) def test_bytes(self): for proto in protocols: for u in b'', b'xyz', b'xyz'*100: p = self.dumps(u) self.assertEqual(self.loads(p), u) 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.assertEqual(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.assertEqual(got, maxint64) # 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.assertEqual(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) self.assertEqual(n, 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_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_structseq(self): import time import os t = time.localtime() for proto in protocols: s = self.dumps(t, proto) u = self.loads(s) self.assertEqual(t, u) if hasattr(os, "stat"): t = os.stat(os.curdir) s = self.dumps(t, proto) u = self.loads(s) self.assertEqual(t, u) if hasattr(os, "statvfs"): t = os.statvfs(os.curdir) s = self.dumps(t, proto) u = self.loads(s) self.assertEqual(t, u) # Tests for protocol 2 def test_proto(self): build_none = pickle.NONE + pickle.STOP for proto in protocols: expected = build_none if proto >= 2: expected = pickle.PROTO + bytes([proto]) + expected p = self.dumps(None, proto) self.assertEqual(p, expected) oob = protocols[-1] + 1 # a future protocol badpickle = pickle.PROTO + bytes([oob]) + build_none try: self.loads(badpickle) except ValueError as detail: self.failUnless(str(detail).startswith( "unsupported pickle protocol")) 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.assertEqual(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.assertEqual(x, y) self.assertEqual(opcode_in_pickle(pickle.LONG4, s), proto >= 2) def test_short_tuples(self): # Map (proto, len(tuple)) to expected opcode. expected_opcode = {(0, 0): pickle.TUPLE, (0, 1): pickle.TUPLE, (0, 2): pickle.TUPLE, (0, 3): pickle.TUPLE, (0, 4): pickle.TUPLE, (1, 0): pickle.EMPTY_TUPLE, (1, 1): pickle.TUPLE, (1, 2): pickle.TUPLE, (1, 3): pickle.TUPLE, (1, 4): pickle.TUPLE, (2, 0): pickle.EMPTY_TUPLE, (2, 1): pickle.TUPLE1, (2, 2): pickle.TUPLE2, (2, 3): pickle.TUPLE3, (2, 4): pickle.TUPLE, (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.assertEqual(x, y, (proto, x, s, y)) expected = expected_opcode[proto, len(x)] self.assertEqual(opcode_in_pickle(expected, s), True) def test_singletons(self): # Map (proto, singleton) to expected opcode. expected_opcode = {(0, None): pickle.NONE, (1, None): pickle.NONE, (2, None): pickle.NONE, (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.assert_(x is y, (proto, x, s, y)) expected = expected_opcode[proto, x] self.assertEqual(opcode_in_pickle(expected, s), True) def test_newobj_tuple(self): x = MyTuple([1, 2, 3]) x.foo = 42 x.bar = "hello" for proto in protocols: s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(tuple(x), tuple(y)) self.assertEqual(x.__dict__, y.__dict__) def test_newobj_list(self): x = MyList([1, 2, 3]) x.foo = 42 x.bar = "hello" for proto in protocols: s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(list(x), list(y)) self.assertEqual(x.__dict__, y.__dict__) def test_newobj_generic(self): for proto in protocols: for C in myclasses: B = C.__base__ x = C(C.sample) x.foo = 42 s = self.dumps(x, proto) y = self.loads(s) detail = (proto, C, B, x, y, type(y)) self.assertEqual(B(x), B(y), detail) self.assertEqual(x.__dict__, y.__dict__, detail) # 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.assert_(__name__.encode("utf-8") in s1) self.assert_(b"MyList" in s1) self.assertEqual(opcode_in_pickle(opcode, s1), False) y = self.loads(s1) self.assertEqual(list(x), list(y)) self.assertEqual(x.__dict__, y.__dict__) # Dump using protocol 2 for test. s2 = self.dumps(x, 2) self.assert_(__name__.encode("utf-8") not in s2) self.assert_(b"MyList" not in s2) self.assertEqual(opcode_in_pickle(opcode, s2), True, repr(s2)) y = self.loads(s2) self.assertEqual(list(x), list(y)) self.assertEqual(x.__dict__, y.__dict__) finally: e.restore() def test_global_ext1(self): self.produce_global_ext(0x00000001, pickle.EXT1) # smallest EXT1 code self.produce_global_ext(0x000000ff, pickle.EXT1) # largest EXT1 code def test_global_ext2(self): self.produce_global_ext(0x00000100, pickle.EXT2) # smallest EXT2 code self.produce_global_ext(0x0000ffff, pickle.EXT2) # largest EXT2 code self.produce_global_ext(0x0000abcd, pickle.EXT2) # check endianness def test_global_ext4(self): self.produce_global_ext(0x00010000, pickle.EXT4) # smallest EXT4 code self.produce_global_ext(0x7fffffff, pickle.EXT4) # largest EXT4 code self.produce_global_ext(0x12abcdef, pickle.EXT4) # check endianness def test_list_chunking(self): n = 10 # too small to chunk x = list(range(n)) for proto in protocols: s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y) num_appends = count_opcode(pickle.APPENDS, s) self.assertEqual(num_appends, proto > 0) n = 2500 # expect at least two chunks when proto > 0 x = list(range(n)) for proto in protocols: s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y) num_appends = count_opcode(pickle.APPENDS, s) if proto == 0: self.assertEqual(num_appends, 0) else: self.failUnless(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) assert isinstance(s, bytes_types) y = self.loads(s) self.assertEqual(x, y) num_setitems = count_opcode(pickle.SETITEMS, s) self.assertEqual(num_setitems, proto > 0) n = 2500 # expect at least two chunks when proto > 0 x = dict.fromkeys(range(n)) for proto in protocols: s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y) num_setitems = count_opcode(pickle.SETITEMS, s) if proto == 0: self.assertEqual(num_setitems, 0) else: self.failUnless(num_setitems >= 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), proto >= 2) y = self.loads(s) # will raise TypeError if __init__ called self.assertEqual(y.abc, 666) self.assertEqual(x.__dict__, y.__dict__) def test_newobj_list_slots(self): x = SlotList([1, 2, 3]) x.foo = 42 x.bar = "hello" s = self.dumps(x, 2) y = self.loads(s) self.assertEqual(list(x), list(y)) self.assertEqual(x.__dict__, y.__dict__) self.assertEqual(x.foo, y.foo) self.assertEqual(x.bar, y.bar) def test_reduce_overrides_default_reduce_ex(self): for proto in 0, 1, 2: 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 0, 1, 2: 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 0, 1, 2: 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 0, 1, 2: 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 0, 1, 2: 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) # Test classes for reduce_ex class REX_one(object): _reduce_called = 0 def __reduce__(self): self._reduce_called = 1 return REX_one, () # No __reduce_ex__ here, but inheriting it from object class REX_two(object): _proto = None def __reduce_ex__(self, proto): self._proto = proto return REX_two, () # No __reduce__ here, but inheriting it from object class REX_three(object): _proto = None def __reduce_ex__(self, proto): self._proto = proto return REX_two, () def __reduce__(self): raise TestFailed("This __reduce__ shouldn't be called") class REX_four(object): _proto = None def __reduce_ex__(self, proto): self._proto = proto return object.__reduce_ex__(self, proto) # Calling base class method should succeed class REX_five(object): _reduce_called = 0 def __reduce__(self): self._reduce_called = 1 return object.__reduce__(self) # This one used to fail with infinite recursion # Test classes for newobj class MyInt(int): sample = 1 class MyLong(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} myclasses = [MyInt, MyLong, MyFloat, MyComplex, MyStr, MyUnicode, MyTuple, MyList, MyDict] 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") class AbstractPickleModuleTests(unittest.TestCase): def test_dump_closed_file(self): import os f = open(TESTFN, "wb") try: f.close() self.assertRaises(ValueError, self.module.dump, 123, f) finally: os.remove(TESTFN) def test_load_closed_file(self): import os f = open(TESTFN, "wb") try: f.close() self.assertRaises(ValueError, self.module.dump, 123, f) finally: os.remove(TESTFN) def test_highest_protocol(self): # Of course this needs to be changed when HIGHEST_PROTOCOL changes. self.assertEqual(self.module.HIGHEST_PROTOCOL, 3) def test_callapi(self): from io import BytesIO f = BytesIO() # With and without keyword arguments self.module.dump(123, f, -1) self.module.dump(123, file=f, protocol=-1) self.module.dumps(123, -1) self.module.dumps(123, protocol=-1) self.module.Pickler(f, -1) self.module.Pickler(f, protocol=-1) 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) else: return None def persistent_load(self, oid): self.load_count += 1 object = int(oid) assert object % 2 == 0 return object def test_persistence(self): self.id_count = 0 self.load_count = 0 L = list(range(10)) self.assertEqual(self.loads(self.dumps(L)), L) self.assertEqual(self.id_count, 5) self.assertEqual(self.load_count, 5) def test_bin_persistence(self): self.id_count = 0 self.load_count = 0 L = list(range(10)) self.assertEqual(self.loads(self.dumps(L, 1)), L) self.assertEqual(self.id_count, 5) self.assertEqual(self.load_count, 5) 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()