1 import pickle 2 import pickletools 3 from test import support 4 from test.pickletester import AbstractPickleTests 5 from test.pickletester import AbstractPickleModuleTests 6 import unittest 7 8 class OptimizedPickleTests(AbstractPickleTests, AbstractPickleModuleTests): 9 10 def dumps(self, arg, proto=None): 11 return pickletools.optimize(pickle.dumps(arg, proto)) 12 13 def loads(self, buf, **kwds): 14 return pickle.loads(buf, **kwds) 15 16 # Test relies on precise output of dumps() 17 test_pickle_to_2x = None 18 19 def test_optimize_long_binget(self): 20 data = [str(i) for i in range(257)] 21 data.append(data[-1]) 22 for proto in range(pickle.HIGHEST_PROTOCOL + 1): 23 pickled = pickle.dumps(data, proto) 24 unpickled = pickle.loads(pickled) 25 self.assertEqual(unpickled, data) 26 self.assertIs(unpickled[-1], unpickled[-2]) 27 28 pickled2 = pickletools.optimize(pickled) 29 unpickled2 = pickle.loads(pickled2) 30 self.assertEqual(unpickled2, data) 31 self.assertIs(unpickled2[-1], unpickled2[-2]) 32 self.assertNotIn(pickle.LONG_BINGET, pickled2) 33 self.assertNotIn(pickle.LONG_BINPUT, pickled2) 34 35 def test_optimize_binput_and_memoize(self): 36 pickled = (b'\x80\x04\x95\x15\x00\x00\x00\x00\x00\x00\x00' 37 b']\x94(\x8c\x04spamq\x01\x8c\x03ham\x94h\x02e.') 38 # 0: \x80 PROTO 4 39 # 2: \x95 FRAME 21 40 # 11: ] EMPTY_LIST 41 # 12: \x94 MEMOIZE 42 # 13: ( MARK 43 # 14: \x8c SHORT_BINUNICODE 'spam' 44 # 20: q BINPUT 1 45 # 22: \x8c SHORT_BINUNICODE 'ham' 46 # 27: \x94 MEMOIZE 47 # 28: h BINGET 2 48 # 30: e APPENDS (MARK at 13) 49 # 31: . STOP 50 self.assertIn(pickle.BINPUT, pickled) 51 unpickled = pickle.loads(pickled) 52 self.assertEqual(unpickled, ['spam', 'ham', 'ham']) 53 self.assertIs(unpickled[1], unpickled[2]) 54 55 pickled2 = pickletools.optimize(pickled) 56 unpickled2 = pickle.loads(pickled2) 57 self.assertEqual(unpickled2, ['spam', 'ham', 'ham']) 58 self.assertIs(unpickled2[1], unpickled2[2]) 59 self.assertNotIn(pickle.BINPUT, pickled2) 60 61 62 class MiscTestCase(unittest.TestCase): 63 def test__all__(self): 64 blacklist = {'bytes_types', 65 'UP_TO_NEWLINE', 'TAKEN_FROM_ARGUMENT1', 66 'TAKEN_FROM_ARGUMENT4', 'TAKEN_FROM_ARGUMENT4U', 67 'TAKEN_FROM_ARGUMENT8U', 'ArgumentDescriptor', 68 'read_uint1', 'read_uint2', 'read_int4', 'read_uint4', 69 'read_uint8', 'read_stringnl', 'read_stringnl_noescape', 70 'read_stringnl_noescape_pair', 'read_string1', 71 'read_string4', 'read_bytes1', 'read_bytes4', 72 'read_bytes8', 'read_unicodestringnl', 73 'read_unicodestring1', 'read_unicodestring4', 74 'read_unicodestring8', 'read_decimalnl_short', 75 'read_decimalnl_long', 'read_floatnl', 'read_float8', 76 'read_long1', 'read_long4', 77 'uint1', 'uint2', 'int4', 'uint4', 'uint8', 'stringnl', 78 'stringnl_noescape', 'stringnl_noescape_pair', 'string1', 79 'string4', 'bytes1', 'bytes4', 'bytes8', 80 'unicodestringnl', 'unicodestring1', 'unicodestring4', 81 'unicodestring8', 'decimalnl_short', 'decimalnl_long', 82 'floatnl', 'float8', 'long1', 'long4', 83 'StackObject', 84 'pyint', 'pylong', 'pyinteger_or_bool', 'pybool', 'pyfloat', 85 'pybytes_or_str', 'pystring', 'pybytes', 'pyunicode', 86 'pynone', 'pytuple', 'pylist', 'pydict', 'pyset', 87 'pyfrozenset', 'anyobject', 'markobject', 'stackslice', 88 'OpcodeInfo', 'opcodes', 'code2op', 89 } 90 support.check__all__(self, pickletools, blacklist=blacklist) 91 92 93 def test_main(): 94 support.run_unittest(OptimizedPickleTests) 95 support.run_unittest(MiscTestCase) 96 support.run_doctest(pickletools) 97 98 99 if __name__ == "__main__": 100 test_main() 101
