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from dataclasses import dataclass
from datetime import date, datetime, time
from typing import List, Optional
import tomli_w
from mashumaro.config import ADD_DIALECT_SUPPORT, BaseConfig
try:
import tomllib
except ModuleNotFoundError:
import tomli as tomllib # type: ignore
from mashumaro.dialect import Dialect
from mashumaro.mixins.toml import DataClassTOMLMixin
serialization_strategy = {
datetime: {
"serialize": lambda dt: dt.strftime("%Y/%m/%d/%H/%M/%S"),
"deserialize": lambda s: datetime.strptime(s, "%Y/%m/%d/%H/%M/%S"),
},
date: {
"serialize": date.toordinal,
"deserialize": date.fromordinal,
},
time: {
"serialize": lambda t: t.strftime("%H/%M/%S"),
"deserialize": lambda s: datetime.strptime(s, "%H/%M/%S").time(),
},
}
class MyDialect(Dialect):
serialization_strategy = serialization_strategy
@dataclass
class InnerDataClassWithOptionalField(DataClassTOMLMixin):
x: Optional[int] = None
def test_data_class_toml_mixin():
assert DataClassTOMLMixin.from_toml("") is None
assert DataClassTOMLMixin().to_toml() is None
def test_to_toml():
@dataclass
class DataClass(DataClassTOMLMixin):
x: List[int]
dumped = tomli_w.dumps({"x": [1, 2, 3]})
assert DataClass([1, 2, 3]).to_toml() == dumped
def test_from_toml():
@dataclass
class DataClass(DataClassTOMLMixin):
x: List[int]
dumped = tomli_w.dumps({"x": [1, 2, 3]})
assert DataClass.from_toml(dumped) == DataClass([1, 2, 3])
def test_toml_with_serialization_strategy():
@dataclass
class DataClass(DataClassTOMLMixin):
datetime: List[datetime]
date: List[date]
time: List[time]
class Config(BaseConfig):
serialization_strategy = serialization_strategy
_datetime = datetime(2022, 10, 12, 12, 54, 30)
_date = date(2022, 10, 12)
_time = time(12, 54, 30)
_datetime_dumped = _datetime.strftime("%Y/%m/%d/%H/%M/%S")
_date_dumped = _date.toordinal()
_time_dumped = _time.strftime("%H/%M/%S")
instance = DataClass([_datetime], [_date], [_time])
dict_dumped = {
"datetime": [_datetime_dumped],
"date": [_date_dumped],
"time": [_time_dumped],
}
toml_dumped = tomli_w.dumps(
{
"datetime": [_datetime_dumped],
"date": [_date_dumped],
"time": [_time_dumped],
}
)
assert DataClass.from_dict(dict_dumped) == instance
assert DataClass.from_toml(toml_dumped) == instance
assert instance.to_dict() == dict_dumped
assert instance.to_toml() == toml_dumped
def test_toml_with_dialect():
@dataclass
class DataClass(DataClassTOMLMixin):
datetime: List[datetime]
date: List[date]
time: List[time]
class Config(BaseConfig):
dialect = MyDialect
_datetime = datetime(2022, 10, 12, 12, 54, 30)
_date = date(2022, 10, 12)
_time = time(12, 54, 30)
_datetime_dumped = _datetime.strftime("%Y/%m/%d/%H/%M/%S")
_date_dumped = _date.toordinal()
_time_dumped = _time.strftime("%H/%M/%S")
instance = DataClass([_datetime], [_date], [_time])
dict_dumped = {
"datetime": [_datetime_dumped],
"date": [_date_dumped],
"time": [_time_dumped],
}
toml_dumped = tomli_w.dumps(
{
"datetime": [_datetime_dumped],
"date": [_date_dumped],
"time": [_time_dumped],
}
)
assert DataClass.from_dict(dict_dumped) == instance
assert DataClass.from_toml(toml_dumped) == instance
assert instance.to_dict() == dict_dumped
assert instance.to_toml() == toml_dumped
def test_toml_with_dialect_support():
@dataclass
class DataClass(DataClassTOMLMixin):
datetime: List[datetime]
date: List[date]
time: List[time]
class Config(BaseConfig):
code_generation_options = [ADD_DIALECT_SUPPORT]
_datetime = datetime(2022, 10, 12, 12, 54, 30)
_date = date(2022, 10, 12)
_time = time(12, 54, 30)
_datetime_dumped = _datetime.strftime("%Y/%m/%d/%H/%M/%S")
_date_dumped = _date.toordinal()
_time_dumped = _time.strftime("%H/%M/%S")
instance = DataClass([_datetime], [_date], [_time])
dict_dumped = {
"datetime": [_datetime.isoformat()],
"date": [_date.isoformat()],
"time": [_time.isoformat()],
}
dict_dumped_dialect = {
"datetime": [_datetime_dumped],
"date": [_date_dumped],
"time": [_time_dumped],
}
toml_dumped = tomli_w.dumps(
{"datetime": [_datetime], "date": [_date], "time": [_time]}
)
toml_dumped_dialect = tomli_w.dumps(
{
"datetime": [_datetime_dumped],
"date": [_date_dumped],
"time": [_time_dumped],
}
)
assert DataClass.from_dict(dict_dumped) == instance
assert (
DataClass.from_dict(dict_dumped_dialect, dialect=MyDialect) == instance
)
assert DataClass.from_toml(toml_dumped) == instance
assert (
DataClass.from_toml(toml_dumped_dialect, dialect=MyDialect) == instance
)
assert instance.to_dict() == dict_dumped
assert instance.to_dict(dialect=MyDialect) == dict_dumped_dialect
assert instance.to_toml() == toml_dumped
assert instance.to_toml(dialect=MyDialect) == toml_dumped_dialect
def test_toml_omit_none():
@dataclass
class DataClass(DataClassTOMLMixin):
x: Optional[InnerDataClassWithOptionalField] = None
y: Optional[int] = None
obj = DataClass()
assert obj.to_dict() == {"x": None, "y": None}
assert obj.to_toml() == ""
obj = DataClass(InnerDataClassWithOptionalField())
assert obj.to_dict() == {"x": {"x": None}, "y": None}
assert obj.to_toml() == "[x]\n"
assert DataClass.from_toml("[x]\n") == obj
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