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from dataclasses import dataclass, InitVar, field
from dacite import from_dict, Config
from tests.common import init_var_type_support
def test_from_dict_with_init_var():
@dataclass
class X:
a: InitVar[int]
b: int = field(init=False)
def __post_init__(self, a: int) -> None:
self.b = 2 * a
result = from_dict(X, {"a": 2})
assert result.b == 4
@init_var_type_support
def test_from_dict_with_init_var_and_data_class():
@dataclass
class X:
i: int
@dataclass
class Y:
a: InitVar[X]
b: X = field(init=False)
def __post_init__(self, a: X) -> None:
self.b = X(i=2 * a.i)
result = from_dict(Y, {"a": {"i": 2}})
assert result.b == X(i=4)
@init_var_type_support
def test_from_dict_with_init_var_and_cast():
@dataclass
class X:
a: InitVar[int]
b: int = field(init=False)
def __post_init__(self, a: int) -> None:
self.b = 2 * a
result = from_dict(X, {"a": "2"}, config=Config(cast=[int]))
assert result.b == 4
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