Python 如何使用PyTest根据self 模拟具有副作用的属性

我try 过下面的代码，使用new_callable=PropertyMock来模拟属性调用，使用autospec=True来访问副作用函数中的self:

from unittest.mock import PropertyMock

def some_property_mock(self):
    if self.__some_member == "some_value"
        return "some_different_value"
    else:
        return "some_other_value"

mocker.patch.object(
    SomeClass, "some_property", new_callable=PropertyMock, autospec=True, side_effect=some_property_mock)

它会引发以下异常: ValueError: Cannot use 'autospec' and 'new_callable' together

是否有其他替代方案来实现预期的行为？

编辑: 我try 过这篇文章https://stackoverflow.com/a/77940234/7217960中提供的解决方案，但它似乎不适用于PropertyMock.打印result会显示MyMock name='my_property()' id='136687332325264'而不是预期的2.

from unittest import mock

class MyClass(object):
    def __int__(self):
        self.my_attribute = 10

    @property
    def my_property(self):
        return self.my_attribute + 1
 
def unit_under_test():
    inst = MyClass()
    return inst.my_property
 
class MyMock(mock.PropertyMock):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        print("MyMock __init__ called.")
 
with mock.patch.object(mock, 'MagicMock', MyMock):
    with mock.patch.object(MyClass, 'my_property', autospec=True, side_effect=lambda self: 2) as spy:
        result = unit_under_test()
        assert result == 2
        assert spy.call_count == 1