diff options
Diffstat (limited to 'Lib/test/test_pickletools.py')
| -rw-r--r-- | Lib/test/test_pickletools.py | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Lib/test/test_pickletools.py b/Lib/test/test_pickletools.py index d37ac26..bbe6875 100644 --- a/Lib/test/test_pickletools.py +++ b/Lib/test/test_pickletools.py @@ -1,3 +1,4 @@ +import struct import pickle import pickletools from test import support @@ -15,6 +16,48 @@ class OptimizedPickleTests(AbstractPickleTests, AbstractPickleModuleTests): # Test relies on precise output of dumps() test_pickle_to_2x = None + def test_optimize_long_binget(self): + data = [str(i) for i in range(257)] + data.append(data[-1]) + for proto in range(pickle.HIGHEST_PROTOCOL + 1): + pickled = pickle.dumps(data, proto) + unpickled = pickle.loads(pickled) + self.assertEqual(unpickled, data) + self.assertIs(unpickled[-1], unpickled[-2]) + + pickled2 = pickletools.optimize(pickled) + unpickled2 = pickle.loads(pickled2) + self.assertEqual(unpickled2, data) + self.assertIs(unpickled2[-1], unpickled2[-2]) + self.assertNotIn(pickle.LONG_BINGET, pickled2) + self.assertNotIn(pickle.LONG_BINPUT, pickled2) + + def test_optimize_binput_and_memoize(self): + pickled = (b'\x80\x04\x95\x15\x00\x00\x00\x00\x00\x00\x00' + b']\x94(\x8c\x04spamq\x01\x8c\x03ham\x94h\x02e.') + # 0: \x80 PROTO 4 + # 2: \x95 FRAME 21 + # 11: ] EMPTY_LIST + # 12: \x94 MEMOIZE + # 13: ( MARK + # 14: \x8c SHORT_BINUNICODE 'spam' + # 20: q BINPUT 1 + # 22: \x8c SHORT_BINUNICODE 'ham' + # 27: \x94 MEMOIZE + # 28: h BINGET 2 + # 30: e APPENDS (MARK at 13) + # 31: . STOP + self.assertIn(pickle.BINPUT, pickled) + unpickled = pickle.loads(pickled) + self.assertEqual(unpickled, ['spam', 'ham', 'ham']) + self.assertIs(unpickled[1], unpickled[2]) + + pickled2 = pickletools.optimize(pickled) + unpickled2 = pickle.loads(pickled2) + self.assertEqual(unpickled2, ['spam', 'ham', 'ham']) + self.assertIs(unpickled2[1], unpickled2[2]) + self.assertNotIn(pickle.BINPUT, pickled2) + def test_main(): support.run_unittest(OptimizedPickleTests) |