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from dataclasses import dataclass
from typing import Optional
import orjson
from typing_extensions import Self
from mashumaro import DataClassDictMixin
from mashumaro.codecs import BasicDecoder, BasicEncoder
from mashumaro.codecs.orjson import ORJSONDecoder, ORJSONEncoder
from mashumaro.mixins.orjson import DataClassORJSONMixin
@dataclass
class DataClassDict(DataClassDictMixin):
next: Optional[Self] = None
@dataclass
class DataClassDictChild(DataClassDict):
x: int = 42
@dataclass
class DataClassDictWithoutMixin:
next: Optional[Self] = None
@dataclass
class DataClassOrjson(DataClassORJSONMixin):
next: Optional[Self] = None
@dataclass
class DataClassOrjsonChild(DataClassOrjson):
x: int = 42
def test_dataclass_dict_with_self():
obj = DataClassDict(DataClassDict())
assert obj.to_dict() == {"next": {"next": None}}
assert DataClassDict.from_dict({"next": {"next": None}}) == obj
assert DataClassDict().to_dict() == {"next": None}
assert DataClassDict.from_dict({"next": None}) == DataClassDict()
assert DataClassDict.from_dict({}) == DataClassDict()
def test_dataclass_dict_with_self_without_mixin():
decoder = BasicDecoder(DataClassDictWithoutMixin)
encoder = BasicEncoder(DataClassDictWithoutMixin)
obj = DataClassDictWithoutMixin(DataClassDictWithoutMixin())
assert encoder.encode(obj) == {"next": {"next": None}}
assert decoder.decode({"next": {"next": None}}) == obj
assert encoder.encode(DataClassDictWithoutMixin()) == {"next": None}
assert decoder.decode({"next": None}) == DataClassDictWithoutMixin()
assert decoder.decode({}) == DataClassDictWithoutMixin()
def test_dataclass_dict_child_with_self():
obj = DataClassDictChild(DataClassDictChild())
assert obj.to_dict() == {"x": 42, "next": {"x": 42, "next": None}}
assert DataClassDictChild.from_dict({"next": {"next": None}}) == obj
assert DataClassDictChild().to_dict() == {"x": 42, "next": None}
assert DataClassDictChild.from_dict({"next": None}) == DataClassDictChild()
assert DataClassDictChild.from_dict({}) == DataClassDictChild()
def test_dataclass_orjson_with_self():
obj = DataClassOrjson(DataClassOrjson())
assert obj.to_dict() == {"next": {"next": None}}
assert DataClassOrjson.from_dict({"next": {"next": None}}) == obj
assert DataClassOrjson().to_dict() == {"next": None}
assert DataClassOrjson.from_dict({"next": None}) == DataClassOrjson()
assert DataClassOrjson.from_dict({}) == DataClassOrjson()
dump = orjson.dumps({"next": {"next": None}})
assert obj.to_jsonb() == dump
assert DataClassOrjson.from_json(dump) == obj
dump = orjson.dumps({"next": None})
assert DataClassOrjson().to_jsonb() == dump
assert DataClassOrjson.from_json(dump) == DataClassOrjson()
assert DataClassOrjson.from_json(b"{}") == DataClassOrjson()
def test_dataclass_orjson_with_self_without_mixin():
decoder = ORJSONDecoder(DataClassDictWithoutMixin)
encoder = ORJSONEncoder(DataClassDictWithoutMixin)
obj = DataClassDictWithoutMixin(DataClassDictWithoutMixin())
dump = orjson.dumps({"next": {"next": None}})
assert encoder.encode(obj) == dump
assert decoder.decode(dump) == obj
dump = orjson.dumps({"next": None})
assert encoder.encode(DataClassDictWithoutMixin()) == dump
assert decoder.decode(dump) == DataClassDictWithoutMixin()
assert decoder.decode(b"{}") == DataClassDictWithoutMixin()
def test_dataclass_orjson_child_with_self():
obj = DataClassOrjsonChild(DataClassOrjsonChild())
assert obj.to_dict() == {"x": 42, "next": {"x": 42, "next": None}}
assert DataClassOrjsonChild.from_dict({"next": {"next": None}}) == obj
assert DataClassOrjsonChild().to_dict() == {"x": 42, "next": None}
assert (
DataClassOrjsonChild.from_dict({"next": None})
== DataClassOrjsonChild()
)
assert DataClassOrjsonChild.from_dict({}) == DataClassOrjsonChild()
dump = orjson.dumps({"next": {"next": None, "x": 42}, "x": 42})
assert obj.to_jsonb() == dump
assert DataClassOrjsonChild.from_json(dump) == obj
dump = orjson.dumps({"next": None, "x": 42})
assert DataClassOrjsonChild().to_jsonb() == dump
assert DataClassOrjsonChild.from_json(dump) == DataClassOrjsonChild()
assert DataClassOrjsonChild.from_json(b"{}") == DataClassOrjsonChild()
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