github.com/kaydxh/golang@v0.0.131/pkg/gocv/cgo/third_path/pybind11/tests/test_pickling.py (about)

     1  import pickle
     2  import re
     3  
     4  import pytest
     5  
     6  import env
     7  from pybind11_tests import pickling as m
     8  
     9  
    10  def test_pickle_simple_callable():
    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"])
    40  def test_roundtrip_with_dict(cls_name):
    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  
    53  def test_enum_pickle():
    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  
    67  def test_roundtrip_simple_py_derived():
    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  
    78  def test_roundtrip_simple_cpp_derived():
    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)