mirror of
https://github.com/pybind/pybind11.git
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fbae8f313b
* pickle setstate: setattr __dict__ only if not empty, to not force use of py::dynamic_attr() unnecessarily. * Adding unit test. * Clang 3.6 & 3.7 compatibility. * PyPy compatibility. * Minor iwyu fix, additional comment. * Addressing reviewer requests. * Applying clang-tidy suggested fixes. * Adding check_dynamic_cast_SimpleCppDerived, related to issue #3062.
84 lines
2.2 KiB
Python
84 lines
2.2 KiB
Python
# -*- coding: utf-8 -*-
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import pytest
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import env # noqa: F401
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from pybind11_tests import pickling as m
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try:
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import cPickle as pickle # Use cPickle on Python 2.7
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except ImportError:
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import pickle
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@pytest.mark.parametrize("cls_name", ["Pickleable", "PickleableNew"])
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def test_roundtrip(cls_name):
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cls = getattr(m, cls_name)
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p = cls("test_value")
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p.setExtra1(15)
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p.setExtra2(48)
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data = pickle.dumps(p, 2) # Must use pickle protocol >= 2
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p2 = pickle.loads(data)
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assert p2.value() == p.value()
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assert p2.extra1() == p.extra1()
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assert p2.extra2() == p.extra2()
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@pytest.mark.xfail("env.PYPY")
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@pytest.mark.parametrize("cls_name", ["PickleableWithDict", "PickleableWithDictNew"])
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def test_roundtrip_with_dict(cls_name):
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cls = getattr(m, cls_name)
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p = cls("test_value")
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p.extra = 15
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p.dynamic = "Attribute"
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data = pickle.dumps(p, pickle.HIGHEST_PROTOCOL)
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p2 = pickle.loads(data)
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assert p2.value == p.value
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assert p2.extra == p.extra
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assert p2.dynamic == p.dynamic
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def test_enum_pickle():
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from pybind11_tests import enums as e
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data = pickle.dumps(e.EOne, 2)
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assert e.EOne == pickle.loads(data)
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#
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# exercise_trampoline
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#
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class SimplePyDerived(m.SimpleBase):
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pass
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def test_roundtrip_simple_py_derived():
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p = SimplePyDerived()
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p.num = 202
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p.stored_in_dict = 303
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data = pickle.dumps(p, pickle.HIGHEST_PROTOCOL)
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p2 = pickle.loads(data)
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assert isinstance(p2, SimplePyDerived)
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assert p2.num == 202
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assert p2.stored_in_dict == 303
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def test_roundtrip_simple_cpp_derived():
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p = m.make_SimpleCppDerivedAsBase()
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assert m.check_dynamic_cast_SimpleCppDerived(p)
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p.num = 404
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if not env.PYPY:
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# To ensure that this unit test is not accidentally invalidated.
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with pytest.raises(AttributeError):
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# Mimics the `setstate` C++ implementation.
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setattr(p, "__dict__", {}) # noqa: B010
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data = pickle.dumps(p, pickle.HIGHEST_PROTOCOL)
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p2 = pickle.loads(data)
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assert isinstance(p2, m.SimpleBase)
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assert p2.num == 404
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# Issue #3062: pickleable base C++ classes can incur object slicing
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# if derived typeid is not registered with pybind11
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assert not m.check_dynamic_cast_SimpleCppDerived(p2)
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