diff options
Diffstat (limited to 'Lib/test/pickletester.py')
| -rw-r--r-- | Lib/test/pickletester.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py index f1a138488c..249cc541c4 100644 --- a/Lib/test/pickletester.py +++ b/Lib/test/pickletester.py @@ -484,6 +484,27 @@ class AbstractPickleTests(unittest.TestCase): self.assertEqual(x, y) 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, + } + all_tuple_opcodes = (pickle.TUPLE, pickle.EMPTY_TUPLE, + pickle.TUPLE1, pickle.TUPLE2, pickle.TUPLE3) a = () b = (1,) c = (1, 2) @@ -495,6 +516,16 @@ class AbstractPickleTests(unittest.TestCase): y = self.loads(s) self.assertEqual(x, y, (proto, x, s, y)) + # Verify that the protocol-correct tuple-building opcode + # was generated. + expected = expected_opcode[proto, len(x)] + for opcode in s: + if opcode in all_tuple_opcodes: + self.assertEqual(expected, opcode) + break + else: + self.fail("didn't find a tuple-building opcode in pickle") + def test_singletons(self): for proto in protocols: for x in None, False, True: |