Coverage for Users / vladimirpavlov / PycharmProjects / parameterizable / tests / test_json_processor_extra.py: 94%

1import json 

2import importlib 

3import pytest 

4 

5from mixinforge.json_processor import ( 

6 _to_serializable_dict, 

7 _from_serializable_dict, 

8 _Markers, 

9) 

10 

11 

12class StrSlots: 

13 __slots__ = "w" 

14 

15 def __init__(self, w): 

16 self.w = w 

17 

18 

19class TwoSlots: 

20 __slots__ = ("u", "v") 

21 

22 def __init__(self, u=0, v=0): 

23 self.u = u 

24 self.v = v 

25 

26 

27def test_to_from_with_string_slots(): 

28 obj = StrSlots("hello") 

29 ser = _to_serializable_dict(obj) 

30 back = _from_serializable_dict(ser) 

31 assert isinstance(back, StrSlots) 

32 assert back.w == "hello" 

33 

34 

35def test_recreate_object_tuple_state_swapped_components(): 

36 # Craft state where first element is dict_values and second is slot values list 

37 state_tuple = ({}, [10, 20]) 

38 payload = { 

39 _Markers.MODULE: __name__, 

40 _Markers.CLASS: "TwoSlots", 

41 _Markers.STATE: _to_serializable_dict(state_tuple), 

42 } 

43 back = _from_serializable_dict(payload) 

44 assert isinstance(back, TwoSlots) 

45 assert back.u == 10 and back.v == 20 

46 

47 

48def test_recreate_object_tuple_state_fallback_pair_becomes_slots(): 

49 # Neither element is dict or list/tuple, so fallback treats entire state as slot values 

50 state_tuple = (1, 2) 

51 payload = { 

52 _Markers.MODULE: __name__, 

53 _Markers.CLASS: "TwoSlots", 

54 _Markers.STATE: _to_serializable_dict(state_tuple), 

55 } 

56 back = _from_serializable_dict(payload) 

57 assert isinstance(back, TwoSlots) 

58 assert back.u == 1 and back.v == 2 

59 

60 

61def test_from_serializable_plain_dict_is_unsupported(): 

62 with pytest.raises(TypeError): 

63 _from_serializable_dict({"a": 1, "b": 2}) 

64