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from __future__ import annotations
import json
from dataclasses import dataclass
from typing import Any, Mapping, Sequence, Union
from apischema import deserialize
def _coerce_json(cls, data):
if not isinstance(data, cls) and isinstance(data, str):
return json.loads(data)
else:
return data
@dataclass
class MyClass:
my_property: Union[Sequence[str], Mapping[str, Any]]
def test_coerce_json():
key = "test"
value = 2
ret = deserialize(
MyClass, {"my_property": f'{{"{key}": {value}}}'}, coerce=_coerce_json
)
assert isinstance(ret, MyClass)
assert isinstance(ret.my_property, dict) and ret.my_property[key] == value
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