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from dataclasses import dataclass
from datetime import date, datetime
from typing import Generic, List, Optional, TypeVar, Union
import pytest
from typing_extensions import Literal
from mashumaro.codecs import BasicDecoder, BasicEncoder
from mashumaro.codecs.basic import decode, encode
from mashumaro.dialect import Dialect
from tests.entities import (
DataClassWithoutMixin,
GenericNamedTuple,
GenericTypedDict,
MyGenericDataClass,
)
T = TypeVar("T")
@dataclass
class Foo:
foo: str
@dataclass
class Bar:
bar: str
class MyDialect(Dialect):
serialization_strategy = {
date: {
"serialize": date.toordinal,
"deserialize": date.fromordinal,
},
}
@dataclass
class GenericDataClass(Generic[T]):
x: T
y: List[T]
@pytest.mark.parametrize(
("shape_type", "encoded", "decoded"),
[
[
List[date],
["2023-09-22", "2023-09-23"],
[
date(2023, 9, 22),
date(2023, 9, 23),
],
],
[DataClassWithoutMixin, {"i": 42}, DataClassWithoutMixin(42)],
[
List[DataClassWithoutMixin],
[{"i": 42}],
[DataClassWithoutMixin(42)],
],
[
GenericDataClass,
{"x": "2023-09-23", "y": ["2023-09-23"]},
GenericDataClass("2023-09-23", ["2023-09-23"]),
],
[
GenericDataClass[date],
{"x": "2023-09-23", "y": ["2023-09-23"]},
GenericDataClass(date(2023, 9, 23), [date(2023, 9, 23)]),
],
[
List[Union[int, date]],
["42", "2023-09-23"],
[42, date(2023, 9, 23)],
],
[Optional[date], "2023-09-23", date(2023, 9, 23)],
[Optional[date], None, None],
],
)
def test_decode(shape_type, encoded, decoded):
assert decode(encoded, shape_type) == decoded
@pytest.mark.parametrize(
("shape_type", "encoded", "decoded"),
[
[
List[date],
["2023-09-22", "2023-09-23"],
[
date(2023, 9, 22),
date(2023, 9, 23),
],
],
[DataClassWithoutMixin, {"i": 42}, DataClassWithoutMixin(42)],
[
List[DataClassWithoutMixin],
[{"i": 42}],
[DataClassWithoutMixin(42)],
],
[
GenericDataClass,
{"x": date(2023, 9, 23), "y": [date(2023, 9, 23)]},
GenericDataClass(date(2023, 9, 23), [date(2023, 9, 23)]),
],
[
GenericDataClass[date],
{"x": "2023-09-23", "y": ["2023-09-23"]},
GenericDataClass(date(2023, 9, 23), [date(2023, 9, 23)]),
],
[List[Union[int, date]], [42, "2023-09-23"], [42, date(2023, 9, 23)]],
[Optional[date], "2023-09-23", date(2023, 9, 23)],
[Optional[date], None, None],
],
)
def test_encode(shape_type, encoded, decoded):
assert encode(decoded, shape_type) == encoded
def test_decoder_with_default_dialect():
decoder = BasicDecoder(List[date], default_dialect=MyDialect)
assert decoder.decode([738785, 738786]) == [
date(2023, 9, 22),
date(2023, 9, 23),
]
def test_encoder_with_default_dialect():
encoder = BasicEncoder(List[date], default_dialect=MyDialect)
assert encoder.encode([date(2023, 9, 22), date(2023, 9, 23)]) == [
738785,
738786,
]
def test_pre_decoder_func():
decoder = BasicDecoder(List[date], pre_decoder_func=lambda v: v.split(","))
assert decoder.decode("2023-09-22,2023-09-23") == [
date(2023, 9, 22),
date(2023, 9, 23),
]
def test_post_encoder_func():
encoder = BasicEncoder(List[date], post_encoder_func=lambda v: ",".join(v))
assert (
encoder.encode(
[
date(2023, 9, 22),
date(2023, 9, 23),
]
)
== "2023-09-22,2023-09-23"
)
@pytest.mark.parametrize(
("shape_type", "invalid_value"),
[[Union[date, datetime], "foo"], [Literal["foo"], "bar"]],
)
def test_value_error_on_decode(shape_type, invalid_value):
decoder = BasicDecoder(shape_type)
with pytest.raises(ValueError) as e:
decoder.decode(invalid_value)
assert type(e.value) is ValueError
@pytest.mark.parametrize(
("shape_type", "invalid_value"),
[[Union[date, datetime], "foo"], [Literal["foo"], "bar"]],
)
def test_value_error_on_encode(shape_type, invalid_value):
encoder = BasicEncoder(shape_type)
with pytest.raises(ValueError) as e:
encoder.encode(invalid_value)
assert type(e.value) is ValueError
def test_with_fields_with_generated_methods():
@dataclass
class MyClass:
td1: GenericTypedDict[str]
td2: GenericTypedDict[date]
nt1: GenericNamedTuple[str]
nt2: GenericNamedTuple[date]
u1: List[Union[int, str]]
u2: List[Union[int, date]]
l1: Literal["l1"]
l2: Literal["l2"]
decoder = BasicDecoder(MyClass)
encoder = BasicEncoder(MyClass)
data = {
"td1": {"x": "2023-11-15", "y": 1},
"td2": {"x": "2023-11-15", "y": 2},
"nt1": ["2023-11-15", 3],
"nt2": ["2023-11-15", 4],
"u1": [5, "2023-11-15"],
"u2": [6, "2023-11-15"],
"l1": "l1",
"l2": "l2",
}
obj = MyClass(
td1={"x": "2023-11-15", "y": 1},
td2={"x": date(2023, 11, 15), "y": 2},
nt1=GenericNamedTuple("2023-11-15", 3),
nt2=GenericNamedTuple(date(2023, 11, 15), 4),
u1=[5, "2023-11-15"],
u2=[6, date(2023, 11, 15)],
l1="l1",
l2="l2",
)
assert decoder.decode(data) == obj
assert encoder.encode(obj) == data
def test_with_two_dataclass_fields():
@dataclass
class MyClass:
x1: Foo
x2: Bar
decoder = BasicDecoder(MyClass)
encoder = BasicEncoder(MyClass)
data = {"x1": {"foo": "foo"}, "x2": {"bar": "bar"}}
obj = MyClass(x1=Foo("foo"), x2=Bar("bar"))
assert decoder.decode(data) == obj
assert encoder.encode(obj) == data
def test_with_two_generic_dataclass_fields():
@dataclass
class MyClass:
x1: MyGenericDataClass[str]
x2: MyGenericDataClass[date]
decoder = BasicDecoder(MyClass)
encoder = BasicEncoder(MyClass)
data = {"x1": {"x": "2023-11-15"}, "x2": {"x": "2023-11-15"}}
obj = MyClass(
x1=MyGenericDataClass("2023-11-15"),
x2=MyGenericDataClass(date(2023, 11, 15)),
)
assert decoder.decode(data) == obj
assert encoder.encode(obj) == data
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