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250 lines (179 loc) · 6.25 KB
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import typing as t
from dataclasses import dataclass
from datetime import datetime, timezone
from enum import Enum
from pathlib import PureWindowsPath
import pytest
from ellar.common.serializer import (
DataclassSerializer,
Serializer,
SerializerFilter,
convert_dataclass_to_pydantic_model,
get_dataclass_pydantic_model,
serialize_object,
)
from pydantic import BaseModel, Field
from pydantic import dataclasses as pydantic_dataclasses
class Person:
def __init__(self, name: str):
self.name = name
@dataclass
class DataclassPerson(DataclassSerializer):
name: str
first_name: str
last_name: t.Optional[str] = None
@dataclass
class PlainDataclassPerson:
name: str
first_name: str
last_name: t.Optional[str] = None
class Pet:
def __init__(self, owner: Person, name: str):
self.owner = owner
self.name = name
class DictablePerson(Person):
def __iter__(self):
return ((k, v) for k, v in self.__dict__.items())
class DictablePet(Pet):
def __iter__(self):
return ((k, v) for k, v in self.__dict__.items())
class Unserializable:
def __iter__(self):
raise NotImplementedError()
@property
def __dict__(self):
raise NotImplementedError()
class ModelWithCustomEncoder(BaseModel):
dt_field: datetime
class Config:
json_encoders = {
datetime: lambda dt: dt.replace(
microsecond=0, tzinfo=timezone.utc
).isoformat()
}
class ModelWithCustomEncoderSubclass(ModelWithCustomEncoder):
class Config:
pass
class RoleEnum(Enum):
admin = "admin"
normal = "normal"
class ModelWithConfig(BaseModel):
role: t.Optional[RoleEnum] = None
class Config:
use_enum_values = True
class ModelWithAlias(BaseModel):
foo: str = Field(..., alias="Foo")
class ModelWithDefault(Serializer):
foo: str = ... # type: ignore
bar: str = "bar"
bla: str = "bla"
cat: t.Optional[str] = None
class ModelWithRoot(BaseModel):
__root__: str
def test_convert_dataclass_to_pydantic_model():
@dataclass
class SomeDataClassConvert:
name: str
class SomeClassConvert:
name: str
pydantic_model = convert_dataclass_to_pydantic_model(SomeDataClassConvert)
assert pydantic_model
assert issubclass(pydantic_model, BaseModel)
with pytest.raises(Exception, match="is not a dataclass"):
convert_dataclass_to_pydantic_model(SomeClassConvert)
def test_get_dataclass_pydantic_model():
@pydantic_dataclasses.dataclass
class SomeDataClassConvert2:
name: str
pydantic_model = get_dataclass_pydantic_model(SomeDataClassConvert2)
assert pydantic_model
assert issubclass(pydantic_model, BaseModel)
def test_dataclass_serializer():
dataclass_person = DataclassPerson(name="Eadwin", first_name="Eadwin")
assert serialize_object(dataclass_person) == {
"name": "Eadwin",
"first_name": "Eadwin",
"last_name": None,
}
assert serialize_object(
dataclass_person, serializer_filter=SerializerFilter(exclude_none=True)
) == {
"name": "Eadwin",
"first_name": "Eadwin",
}
plain_dataclass = PlainDataclassPerson(name="Eadwin", first_name="Eadwin")
assert serialize_object(dataclass_person) == {
"name": "Eadwin",
"first_name": "Eadwin",
"last_name": None,
}
assert serialize_object(
plain_dataclass, serializer_filter=SerializerFilter(exclude_none=True)
) == {
"name": "Eadwin",
"first_name": "Eadwin",
"last_name": None,
}
assert dataclass_person.get_pydantic_model()
assert issubclass(dataclass_person.get_pydantic_model(), BaseModel)
def test_serializer_filter():
model = ModelWithDefault(foo="foo", bar="bar")
assert serialize_object(model) == {
"foo": "foo",
"bar": "bar",
"bla": "bla",
"cat": None,
}
assert serialize_object(
model, serializer_filter=SerializerFilter(exclude_none=True)
) == {"foo": "foo", "bar": "bar", "bla": "bla"}
assert serialize_object(
model, serializer_filter=SerializerFilter(exclude_defaults=True)
) == {"foo": "foo"}
assert serialize_object(
model,
serializer_filter=SerializerFilter(exclude_unset=True, exclude_defaults=True),
) == {"foo": "foo"}
def test_encode_class():
person = Person(name="Foo")
pet = Pet(owner=person, name="Firulais")
assert serialize_object(pet) == {"name": "Firulais", "owner": {"name": "Foo"}}
def test_encode_dictable():
person = DictablePerson(name="Foo")
pet = DictablePet(owner=person, name="Firulais")
assert serialize_object(pet) == {"name": "Firulais", "owner": {"name": "Foo"}}
def test_encode_unsupported():
unserializable = Unserializable()
with pytest.raises(ValueError):
serialize_object(unserializable)
def test_encode_custom_json_encoders_model():
model = ModelWithCustomEncoder(dt_field=datetime(2019, 1, 1, 8))
assert serialize_object(model) == {"dt_field": "2019-01-01T08:00:00+00:00"}
def test_encode_custom_json_encoders_model_subclass():
model = ModelWithCustomEncoderSubclass(dt_field=datetime(2019, 1, 1, 8))
assert serialize_object(model) == {"dt_field": "2019-01-01T08:00:00+00:00"}
def test_encode_model_with_config():
model = ModelWithConfig(role=RoleEnum.admin)
assert serialize_object(model) == {"role": "admin"}
def test_encode_model_with_alias():
model = ModelWithAlias(Foo="Bar")
assert serialize_object(model) == {"Foo": "Bar"}
def test_custom_encoders():
class safe_datetime(datetime):
pass
class MyModel(BaseModel):
dt_field: safe_datetime
instance = MyModel(dt_field=safe_datetime.now())
encoded_instance = serialize_object(
instance, {safe_datetime: lambda o: o.isoformat()}
)
assert encoded_instance["dt_field"] == instance.dt_field.isoformat()
def test_encode_model_with_path(model_with_path):
if isinstance(model_with_path.path, PureWindowsPath):
expected = "\\foo\\bar"
else:
expected = "/foo/bar"
assert serialize_object(model_with_path) == {"path": expected}
def test_encode_root():
model = ModelWithRoot(__root__="Foo")
assert serialize_object(model) == "Foo"