# -*- coding: utf-8 -*-

import pytest

from System.Collections.Generic import Dictionary

from System.Dynamic import ExpandoObject

from Python.Test import DynamicMappingObject

def _mro_names(obj):

return [f"{t.__module__}.{t.__name__}" for t in type(obj).__mro__]

@pytest.mark.parametrize(

"obj, expected",

[

(DynamicMappingObject(), True),

(ExpandoObject(), True),

(Dictionary[str, int](), False),

],

)

def test_dlr_mixin_presence(obj, expected):

has_mixin = "clr._extras.dlr.DynamicMetaObjectProviderMixin" in _mro_names(obj)

assert has_mixin is expected

@pytest.mark.parametrize("obj", [DynamicMappingObject(), ExpandoObject()])

def test_dynamic_binder(obj):

assert "answer" not in dir(obj)

assert "wrong_answer" not in dir(obj)

setattr(obj, "answer", 42)

obj.wrong_answer = 54

assert obj.answer == 42

assert obj.wrong_answer == 54

assert "answer" in dir(obj)

assert "wrong_answer" in dir(obj)

def test_native_members_are_accessible_and_keep_priority():

obj = DynamicMappingObject()

setattr(obj, "answer", 42)

obj.SetDynamicValue("Multiplier", 999)

# Native field

assert obj.Label == "default"

obj.Label = "changed"

assert obj.Label == "changed"

# Native property takes precedence over dynamic fallback

assert obj.Multiplier == 1

obj.Multiplier = 7

assert obj.Multiplier == 7

# Native method

obj.Multiplier = 3

assert obj.Multiply(5) == 15

def test_dynamic_and_native_members_coexist():

obj = DynamicMappingObject()

setattr(obj, "answer", 42)

obj.Multiplier = 2

assert obj.answer == 42

assert obj.Multiplier == 2

assert obj.Multiply(10) == 20