def get_value(self, field: Field, data: Data) -> Any:
if field.name in self.flattened or field.name in self.prefixed:
if field.name in self.flattened:
value = data
else:
value = self._extract_nested_dict_for_prefix(
self.prefixed[field.name], data)
else:
try:
key_name = self.remap.get(field.name, field.name)
value = data[key_name]
except KeyError:
raise ValueNotFoundError()
if field.name in self.transform:
value = self.transform[field.name](value)
if field.name in self.cast:
value = cast_value(field.type, value)
return value
def test_cast_value_with_generic_mapping():
assert cast_value(Dict[str, int], {1: "1"}) == {"1": 1}
def test_cast_value_with_generic_sequence():
assert cast_value(List[int], ["1"]) == [1]
def test_cast_value_with_optional():
assert cast_value(Optional[int], "1") == 1
def test_cast_value_with_built_in_type():
assert cast_value(int, "1") == 1