test_pickling.py
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1 import pickle
2 import re
3 
4 import pytest
5 
6 import env
7 from pybind11_tests import pickling as m
8 
9 
11  assert m.simple_callable() == 20220426
12  if env.PYPY:
13  serialized = pickle.dumps(m.simple_callable)
14  deserialized = pickle.loads(serialized)
15  assert deserialized() == 20220426
16  else:
17  # To document broken behavior: currently it fails universally with
18  # all C Python versions.
19  with pytest.raises(TypeError) as excinfo:
20  pickle.dumps(m.simple_callable)
21  assert re.search("can.*t pickle .*PyCapsule.* object", str(excinfo.value))
22 
23 
24 @pytest.mark.parametrize("cls_name", ["Pickleable", "PickleableNew"])
25 def test_roundtrip(cls_name):
26  cls = getattr(m, cls_name)
27  p = cls("test_value")
28  p.setExtra1(15)
29  p.setExtra2(48)
30 
31  data = pickle.dumps(p, 2) # Must use pickle protocol >= 2
32  p2 = pickle.loads(data)
33  assert p2.value() == p.value()
34  assert p2.extra1() == p.extra1()
35  assert p2.extra2() == p.extra2()
36 
37 
38 @pytest.mark.xfail("env.PYPY")
39 @pytest.mark.parametrize("cls_name", ["PickleableWithDict", "PickleableWithDictNew"])
41  cls = getattr(m, cls_name)
42  p = cls("test_value")
43  p.extra = 15
44  p.dynamic = "Attribute"
45 
46  data = pickle.dumps(p, pickle.HIGHEST_PROTOCOL)
47  p2 = pickle.loads(data)
48  assert p2.value == p.value
49  assert p2.extra == p.extra
50  assert p2.dynamic == p.dynamic
51 
52 
54  from pybind11_tests import enums as e
55 
56  data = pickle.dumps(e.EOne, 2)
57  assert e.EOne == pickle.loads(data)
58 
59 
60 #
61 # exercise_trampoline
62 #
63 class SimplePyDerived(m.SimpleBase):
64  pass
65 
66 
68  p = SimplePyDerived()
69  p.num = 202
70  p.stored_in_dict = 303
71  data = pickle.dumps(p, pickle.HIGHEST_PROTOCOL)
72  p2 = pickle.loads(data)
73  assert isinstance(p2, SimplePyDerived)
74  assert p2.num == 202
75  assert p2.stored_in_dict == 303
76 
77 
79  p = m.make_SimpleCppDerivedAsBase()
80  assert m.check_dynamic_cast_SimpleCppDerived(p)
81  p.num = 404
82  if not env.PYPY:
83  # To ensure that this unit test is not accidentally invalidated.
84  with pytest.raises(AttributeError):
85  # Mimics the `setstate` C++ implementation.
86  setattr(p, "__dict__", {}) # noqa: B010
87  data = pickle.dumps(p, pickle.HIGHEST_PROTOCOL)
88  p2 = pickle.loads(data)
89  assert isinstance(p2, m.SimpleBase)
90  assert p2.num == 404
91  # Issue #3062: pickleable base C++ classes can incur object slicing
92  # if derived typeid is not registered with pybind11
93  assert not m.check_dynamic_cast_SimpleCppDerived(p2)
def test_pickle_simple_callable()
bool isinstance(handle obj)
Definition: pytypes.h:700
def test_roundtrip_simple_cpp_derived()
def test_roundtrip(cls_name)
def test_roundtrip_with_dict(cls_name)
def test_roundtrip_simple_py_derived()
def test_enum_pickle()
Definition: pytypes.h:1403
object getattr(handle obj, handle name)
Definition: pytypes.h:748
void setattr(handle obj, handle name, handle value)
Definition: pytypes.h:780


gtsam
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autogenerated on Tue Jul 4 2023 02:37:46