Possibly unintentional inconsistent behavior in property stubs

[kaungst]

Given this setup

// models/beetle_juice.py
class BeetleJuice:
    @property
    def defined_attribute(self):
        pass

    def defined_method(self):
        pass

// tests/models/beetle_juice_test.py
from doubles import InstanceDouble, allow

1. This raises an doubles.exceptions.VerifyingDoubleError which seems correct:

   • allow(InstanceDouble("models.beetle_juice.BeetleJuice")).undefined_attribute

2. This raises an AttributeError which seems odd but may make sense in the context of the next example:

   • InstanceDouble("models.beetle_juice.BeetleJuice", defined_attribute=3)

3. This does not raise an error (maybe useful for defining 'meta' properties?):

   • InstanceDouble("models.beetle_juice.BeetleJuice", undefined_attribute=3)

4. This does not raise an error, seems inconsistent with the AttributeError behavior in the second example:

   • InstanceDouble("models.beetle_juice.BeetleJuice", defined_method=3)