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from dataclasses import InitVar, dataclass, field
from dataclasses import replace as std_replace
from apischema.dataclasses import replace
from apischema.fields import fields_set, with_fields_set
from apischema.metadata.implem import init_var
from apischema.visitor import dataclass_types_and_fields
@dataclass
class WithInitVar:
a: InitVar[int] = field(metadata=init_var("int"))
def test_resolve_init_var():
assert dataclass_types_and_fields(WithInitVar)[0] == {"a": int}
@with_fields_set
@dataclass
class WithFieldsSet:
a: int = 0
def test_replace():
obj = WithFieldsSet()
assert fields_set(obj) == set()
obj2 = std_replace(obj)
assert fields_set(obj2) == {"a"}
obj3 = replace(obj)
assert fields_set(obj3) == set()
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