Coverage for Users / vladimirpavlov / PycharmProjects / parameterizable / tests / test_access_jsparams.py: 100%

1import pytest 

2 

3from mixinforge.json_processor import dumpjs, loadjs, access_jsparams 

4 

5 

6class ParamObj: 

7 def __init__(self, x=0, y="", z=None, cfg=None): 

8 self.x = x 

9 self.y = y 

10 self.z = z 

11 self.cfg = cfg 

12 

13 def get_params(self): 

14 # Only parameters returned here are serialized into the JSON under PARAMS->DICT 

15 return {"x": self.x, "y": self.y, "z": self.z, "cfg": self.cfg} 

16 

17 

18def test_access_jsparams_returns_selected_params(): 

19 o = ParamObj(x=10, y="foo", z=3) 

20 js = dumpjs(o) 

21 

22 result = access_jsparams(js, "x", "y") 

23 

24 assert result == {"x": 10, "y": "foo"} 

25 

26 

27def test_access_jsparams_with_nested_values(): 

28 nested_list = [1, 2, [3, 4], "ok"] 

29 o = ParamObj(x=1, y="a", cfg=nested_list) 

30 js = dumpjs(o) 

31 

32 result = access_jsparams(js, "cfg") 

33 

34 # access_jsparams returns JSON-native structures directly 

35 assert result == {"cfg": nested_list} 

36 

37 

38def test_access_jsparams_missing_key_raises_keyerror(): 

39 o = ParamObj(x=2, y="b") 

40 js = dumpjs(o) 

41 

42 with pytest.raises(KeyError): 

43 access_jsparams(js, "missing") 

44 

45 

46def test_access_jsparams_invalid_structure_raises_keyerror(): 

47 # Use dumps on a plain dict — it won't contain PARAMS->DICT structure 

48 js = dumpjs({"plain": 1}) 

49 

50 with pytest.raises(KeyError): 

51 access_jsparams(js, "x")