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68 lines
2.4 KiB
68 lines
2.4 KiB
import struct
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import pickle
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import pickletools
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from test import support
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from test.pickletester import AbstractPickleTests
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from test.pickletester import AbstractPickleModuleTests
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class OptimizedPickleTests(AbstractPickleTests, AbstractPickleModuleTests):
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def dumps(self, arg, proto=None):
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return pickletools.optimize(pickle.dumps(arg, proto))
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def loads(self, buf, **kwds):
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return pickle.loads(buf, **kwds)
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# Test relies on precise output of dumps()
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test_pickle_to_2x = None
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def test_optimize_long_binget(self):
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data = [str(i) for i in range(257)]
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data.append(data[-1])
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for proto in range(pickle.HIGHEST_PROTOCOL + 1):
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pickled = pickle.dumps(data, proto)
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unpickled = pickle.loads(pickled)
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self.assertEqual(unpickled, data)
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self.assertIs(unpickled[-1], unpickled[-2])
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pickled2 = pickletools.optimize(pickled)
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unpickled2 = pickle.loads(pickled2)
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self.assertEqual(unpickled2, data)
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self.assertIs(unpickled2[-1], unpickled2[-2])
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self.assertNotIn(pickle.LONG_BINGET, pickled2)
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self.assertNotIn(pickle.LONG_BINPUT, pickled2)
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def test_optimize_binput_and_memoize(self):
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pickled = (b'\x80\x04\x95\x15\x00\x00\x00\x00\x00\x00\x00'
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b']\x94(\x8c\x04spamq\x01\x8c\x03ham\x94h\x02e.')
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# 0: \x80 PROTO 4
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# 2: \x95 FRAME 21
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# 11: ] EMPTY_LIST
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# 12: \x94 MEMOIZE
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# 13: ( MARK
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# 14: \x8c SHORT_BINUNICODE 'spam'
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# 20: q BINPUT 1
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# 22: \x8c SHORT_BINUNICODE 'ham'
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# 27: \x94 MEMOIZE
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# 28: h BINGET 2
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# 30: e APPENDS (MARK at 13)
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# 31: . STOP
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self.assertIn(pickle.BINPUT, pickled)
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unpickled = pickle.loads(pickled)
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self.assertEqual(unpickled, ['spam', 'ham', 'ham'])
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self.assertIs(unpickled[1], unpickled[2])
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pickled2 = pickletools.optimize(pickled)
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unpickled2 = pickle.loads(pickled2)
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self.assertEqual(unpickled2, ['spam', 'ham', 'ham'])
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self.assertIs(unpickled2[1], unpickled2[2])
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self.assertNotIn(pickle.BINPUT, pickled2)
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def test_main():
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support.run_unittest(OptimizedPickleTests)
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support.run_doctest(pickletools)
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if __name__ == "__main__":
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test_main()
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