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from __future__ import annotations
from dataclasses import dataclass
from typing import Dict
import msgpack
import orjson
import pytest
from mashumaro import DataClassDictMixin
from mashumaro.config import ADD_DIALECT_SUPPORT, BaseConfig
from mashumaro.dialect import Dialect
from mashumaro.exceptions import UnresolvedTypeReferenceError
from mashumaro.mixins.msgpack import DataClassMessagePackMixin
from mashumaro.mixins.orjson import DataClassORJSONMixin
from .conftest import add_unpack_method
@dataclass
class A(DataClassDictMixin):
x: B
@dataclass
class B(DataClassDictMixin):
x: int
@dataclass
class Base(DataClassDictMixin):
pass
@dataclass
class A1(Base):
a: B1
@dataclass
class A2(Base):
a: B2
@dataclass
class A3(Base):
a: B1
x: int
class Config(BaseConfig):
code_generation_options = [ADD_DIALECT_SUPPORT]
@dataclass
class B1(Base):
b: int
@dataclass
class AMessagePack(DataClassMessagePackMixin):
x: BMessagePack
@dataclass
class BMessagePack(DataClassMessagePackMixin):
x: int
@dataclass
class BaseMessagePack(DataClassMessagePackMixin):
pass
@dataclass
class A1MessagePack(BaseMessagePack):
a: B1MessagePack
@dataclass
class A2MessagePack(BaseMessagePack):
a: B2
@dataclass
class A3MessagePack(BaseMessagePack):
a: B1MessagePack
x: int
class Config(BaseConfig):
code_generation_options = [ADD_DIALECT_SUPPORT]
@dataclass
class B1MessagePack(BaseMessagePack):
b: int
@dataclass
class A3ORJSON(DataClassORJSONMixin):
a: B1ORJSON
x: int
class Config(BaseConfig):
code_generation_options = [ADD_DIALECT_SUPPORT]
@dataclass
class B1ORJSON(DataClassORJSONMixin):
b: int
def test_postponed_annotation_evaluation():
obj = A(x=B(x=1))
assert obj.to_dict() == {"x": {"x": 1}}
assert A.from_dict({"x": {"x": 1}}) == obj
def test_unresolved_type_with_allowed_postponed_annotation_evaluation():
@dataclass
class DataClass(DataClassDictMixin):
x: X
with pytest.raises(UnresolvedTypeReferenceError):
DataClass.from_dict({})
with pytest.raises(UnresolvedTypeReferenceError):
DataClass(x=1).to_dict()
def test_unresolved_type_with_disallowed_postponed_annotation_evaluation():
with pytest.raises(UnresolvedTypeReferenceError):
@dataclass
class DataClass(DataClassDictMixin):
x: X
class Config(BaseConfig):
allow_postponed_evaluation = False
with add_unpack_method:
with pytest.raises(UnresolvedTypeReferenceError):
@dataclass
class DataClass(DataClassDictMixin):
x: X
class Config(BaseConfig):
allow_postponed_evaluation = False
def test_postponed_annotation_evaluation_with_parent():
obj = A1(B1(1))
assert A1.from_dict({"a": {"b": 1}}) == obj
assert obj.to_dict() == {"a": {"b": 1}}
def test_postponed_annotation_evaluation_with_parent_and_no_reference():
with pytest.raises(UnresolvedTypeReferenceError):
A2.from_dict({"a": {"b": 1}})
with pytest.raises(UnresolvedTypeReferenceError):
A2(None).to_dict()
def test_postponed_annotation_evaluation_with_parent_and_dialect():
class MyDialect(Dialect):
serialization_strategy = {
int: {
"serialize": lambda i: str(int(i * 1000)),
"deserialize": lambda s: int(int(s) / 1000),
}
}
obj = A3(B1(1), 2)
assert A3.from_dict({"a": {"b": 1}, "x": 2}) == obj
assert A3.from_dict({"a": {"b": 1}, "x": "2000"}, dialect=MyDialect) == obj
assert obj.to_dict() == {"a": {"b": 1}, "x": 2}
assert obj.to_dict(dialect=MyDialect) == {"a": {"b": 1}, "x": "2000"}
def test_postponed_annotation_evaluation_msgpack():
obj = AMessagePack(x=BMessagePack(x=1))
assert obj.to_dict() == {"x": {"x": 1}}
assert AMessagePack.from_dict({"x": {"x": 1}}) == obj
dump = msgpack.dumps({"x": {"x": 1}})
assert obj.to_msgpack() == dump
assert AMessagePack.from_msgpack(dump) == obj
def test_unresolved_type_with_allowed_postponed_annotation_evaluation_msgpack():
@dataclass
class DataClass(DataClassMessagePackMixin):
x: X
with pytest.raises(UnresolvedTypeReferenceError):
DataClass.from_msgpack(b"")
with pytest.raises(UnresolvedTypeReferenceError):
DataClass(x=1).to_msgpack()
def test_postponed_annotation_evaluation_with_parent_msgpack():
obj = A1MessagePack(B1MessagePack(1))
dump = msgpack.dumps({"a": {"b": 1}})
assert A1MessagePack.from_msgpack(dump) == obj
assert obj.to_msgpack() == dump
def test_postponed_annotation_evaluation_with_parent_and_no_reference_msgpack():
with pytest.raises(UnresolvedTypeReferenceError):
A2MessagePack.from_msgpack(b"")
with pytest.raises(UnresolvedTypeReferenceError):
A2MessagePack(None).to_msgpack()
def test_postponed_annotation_evaluation_with_parent_and_dialect_msgpack():
class MyDialect(Dialect):
serialization_strategy = {
int: {
"serialize": lambda i: str(int(i * 1000)),
"deserialize": lambda s: int(int(s) / 1000),
}
}
obj = A3MessagePack(B1MessagePack(1), 2)
dump = msgpack.dumps({"a": {"b": 1}, "x": 2})
dump_dialect = msgpack.dumps({"a": {"b": 1}, "x": "2000"})
assert A3MessagePack.from_msgpack(dump) == obj
assert A3MessagePack.from_msgpack(dump_dialect, dialect=MyDialect) == obj
assert obj.to_msgpack() == dump
assert obj.to_msgpack(dialect=MyDialect) == dump_dialect
def test_postponed_msgpack_with_custom_encoder_and_decoder():
def decoder(data) -> Dict[str, bytes]:
def modify(d):
result = {}
for k, v in d.items():
if isinstance(v, dict):
result[k] = modify(v)
else:
result[k] = v // 1000
return result
return modify(msgpack.loads(data))
def encoder(data: Dict[str, bytes]) -> bytes:
def modify(d):
result = {}
for k, v in d.items():
if isinstance(v, dict):
result[k] = modify(v)
else:
result[k] = v * 1000
return result
return msgpack.dumps(modify(data))
instance = A3MessagePack(B1MessagePack(123), 456)
dumped = msgpack.packb({"a": {"b": 123000}, "x": 456000})
assert instance.to_msgpack(encoder=encoder) == dumped
assert A3MessagePack.from_msgpack(dumped, decoder=decoder) == instance
def test_postponed_orjson_with_custom_encoder_and_decoder():
def decoder(data) -> Dict[str, bytes]:
def modify(d):
result = {}
for k, v in d.items():
if isinstance(v, dict):
result[k] = modify(v)
else:
result[k] = v // 1000
return result
return modify(orjson.loads(data))
def encoder(data: Dict[str, bytes], **_) -> bytes:
def modify(d):
result = {}
for k, v in d.items():
if isinstance(v, dict):
result[k] = modify(v)
else:
result[k] = v * 1000
return result
return orjson.dumps(modify(data))
instance = A3ORJSON(B1ORJSON(123), 456)
dumped = orjson.dumps({"a": {"b": 123000}, "x": 456000})
assert instance.to_jsonb(encoder=encoder) == dumped
assert A3ORJSON.from_json(dumped, decoder=decoder) == instance
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