1import pickle 2import pickletools 3from test import support 4from test.pickletester import AbstractPickleTests 5import unittest 6 7class OptimizedPickleTests(AbstractPickleTests): 8 9 def dumps(self, arg, proto=None, **kwargs): 10 return pickletools.optimize(pickle.dumps(arg, proto, **kwargs)) 11 12 def loads(self, buf, **kwds): 13 return pickle.loads(buf, **kwds) 14 15 # Test relies on precise output of dumps() 16 test_pickle_to_2x = None 17 18 # Test relies on writing by chunks into a file object. 19 test_framed_write_sizes_with_delayed_writer = None 20 21 def test_optimize_long_binget(self): 22 data = [str(i) for i in range(257)] 23 data.append(data[-1]) 24 for proto in range(pickle.HIGHEST_PROTOCOL + 1): 25 pickled = pickle.dumps(data, proto) 26 unpickled = pickle.loads(pickled) 27 self.assertEqual(unpickled, data) 28 self.assertIs(unpickled[-1], unpickled[-2]) 29 30 pickled2 = pickletools.optimize(pickled) 31 unpickled2 = pickle.loads(pickled2) 32 self.assertEqual(unpickled2, data) 33 self.assertIs(unpickled2[-1], unpickled2[-2]) 34 self.assertNotIn(pickle.LONG_BINGET, pickled2) 35 self.assertNotIn(pickle.LONG_BINPUT, pickled2) 36 37 def test_optimize_binput_and_memoize(self): 38 pickled = (b'\x80\x04\x95\x15\x00\x00\x00\x00\x00\x00\x00' 39 b']\x94(\x8c\x04spamq\x01\x8c\x03ham\x94h\x02e.') 40 # 0: \x80 PROTO 4 41 # 2: \x95 FRAME 21 42 # 11: ] EMPTY_LIST 43 # 12: \x94 MEMOIZE 44 # 13: ( MARK 45 # 14: \x8c SHORT_BINUNICODE 'spam' 46 # 20: q BINPUT 1 47 # 22: \x8c SHORT_BINUNICODE 'ham' 48 # 27: \x94 MEMOIZE 49 # 28: h BINGET 2 50 # 30: e APPENDS (MARK at 13) 51 # 31: . STOP 52 self.assertIn(pickle.BINPUT, pickled) 53 unpickled = pickle.loads(pickled) 54 self.assertEqual(unpickled, ['spam', 'ham', 'ham']) 55 self.assertIs(unpickled[1], unpickled[2]) 56 57 pickled2 = pickletools.optimize(pickled) 58 unpickled2 = pickle.loads(pickled2) 59 self.assertEqual(unpickled2, ['spam', 'ham', 'ham']) 60 self.assertIs(unpickled2[1], unpickled2[2]) 61 self.assertNotIn(pickle.BINPUT, pickled2) 62 63 64class MiscTestCase(unittest.TestCase): 65 def test__all__(self): 66 blacklist = {'bytes_types', 67 'UP_TO_NEWLINE', 'TAKEN_FROM_ARGUMENT1', 68 'TAKEN_FROM_ARGUMENT4', 'TAKEN_FROM_ARGUMENT4U', 69 'TAKEN_FROM_ARGUMENT8U', 'ArgumentDescriptor', 70 'read_uint1', 'read_uint2', 'read_int4', 'read_uint4', 71 'read_uint8', 'read_stringnl', 'read_stringnl_noescape', 72 'read_stringnl_noescape_pair', 'read_string1', 73 'read_string4', 'read_bytes1', 'read_bytes4', 74 'read_bytes8', 'read_bytearray8', 'read_unicodestringnl', 75 'read_unicodestring1', 'read_unicodestring4', 76 'read_unicodestring8', 'read_decimalnl_short', 77 'read_decimalnl_long', 'read_floatnl', 'read_float8', 78 'read_long1', 'read_long4', 79 'uint1', 'uint2', 'int4', 'uint4', 'uint8', 'stringnl', 80 'stringnl_noescape', 'stringnl_noescape_pair', 'string1', 81 'string4', 'bytes1', 'bytes4', 'bytes8', 'bytearray8', 82 'unicodestringnl', 'unicodestring1', 'unicodestring4', 83 'unicodestring8', 'decimalnl_short', 'decimalnl_long', 84 'floatnl', 'float8', 'long1', 'long4', 85 'StackObject', 86 'pyint', 'pylong', 'pyinteger_or_bool', 'pybool', 'pyfloat', 87 'pybytes_or_str', 'pystring', 'pybytes', 'pybytearray', 88 'pyunicode', 'pynone', 'pytuple', 'pylist', 'pydict', 89 'pyset', 'pyfrozenset', 'pybuffer', 'anyobject', 90 'markobject', 'stackslice', 'OpcodeInfo', 'opcodes', 91 'code2op', 92 } 93 support.check__all__(self, pickletools, blacklist=blacklist) 94 95 96def test_main(): 97 support.run_unittest(OptimizedPickleTests) 98 support.run_unittest(MiscTestCase) 99 support.run_doctest(pickletools) 100 101 102if __name__ == "__main__": 103 test_main() 104