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import sys
from datetime import date
from decimal import Decimal
from types import ModuleType
from typing import Any, Callable, Dict, List, NewType, Optional, Tuple, Union
import pytest
from pydantic import (
VERSION,
BaseModel,
PositiveFloat,
conbytes,
condate,
condecimal,
confloat,
confrozenset,
conint,
conlist,
conset,
constr,
)
from polyfactory.factories.dataclass_factory import DataclassFactory
from polyfactory.factories.pydantic_factory import ModelFactory
def test_new_types() -> None:
MyInt = NewType("MyInt", int)
WrappedInt = NewType("WrappedInt", MyInt)
class MyModel(BaseModel):
int_field: MyInt
wrapped_int_field: WrappedInt
class MyModelFactory(ModelFactory):
__model__ = MyModel
result = MyModelFactory.build()
assert isinstance(result.int_field, int)
assert isinstance(result.wrapped_int_field, int)
def test_complex_new_types() -> None:
MyStr = NewType("MyStr", str)
MyInt = NewType("MyInt", int)
class NestedModel(BaseModel):
nested_int_field: MyInt
MyNestedModel = NewType("MyNestedModel", NestedModel)
class MyModel(BaseModel):
list_int_field: List[MyInt]
union_field: Union[MyInt, MyStr]
optional_str_field: Optional[MyStr]
tuple_str_str: Tuple[MyStr, MyStr]
dict_field: Dict[MyStr, Any]
complex_dict_field: Dict[MyStr, Dict[Union[MyInt, MyStr], MyInt]]
nested_model_field: MyNestedModel
class MyModelFactory(ModelFactory):
__model__ = MyModel
result = MyModelFactory.build()
assert isinstance(result.list_int_field[0], int)
assert isinstance(result.union_field, (int, str))
assert result.optional_str_field is None or isinstance(result.optional_str_field, str)
assert isinstance(result.tuple_str_str, tuple)
assert isinstance(result.dict_field, dict)
assert isinstance(result.nested_model_field, NestedModel)
assert isinstance(result.nested_model_field.nested_int_field, int)
@pytest.mark.skipif(VERSION.startswith("2"), reason="https://github.com/pydantic/pydantic/issues/5907")
def test_constrained_new_types() -> None:
ConBytes = NewType("ConBytes", conbytes(min_length=2, max_length=4)) # type: ignore[misc]
ConStr = NewType("ConStr", constr(min_length=10, max_length=15)) # type: ignore[misc]
ConInt = NewType("ConInt", conint(gt=100, lt=110)) # type: ignore[misc]
ConFloat = NewType("ConFloat", confloat(lt=-100)) # type: ignore[misc]
ConDecimal = NewType("ConDecimal", condecimal(ge=Decimal(6), le=Decimal(8))) # type: ignore[misc]
ConDate = NewType("ConDate", condate(gt=date.today())) # type: ignore[misc]
ConMyPositiveFloat = NewType("ConMyPositiveFloat", PositiveFloat)
if VERSION.startswith("1"):
ConList = NewType("ConList", conlist(item_type=int, min_items=3)) # type: ignore
ConSet = NewType("ConSet", conset(item_type=int, min_items=4)) # type: ignore
ConFrozenSet = NewType("ConFrozenSet", confrozenset(item_type=str, min_items=5)) # type: ignore
else:
ConList = NewType("ConList", conlist(item_type=int, min_length=3)) # type: ignore
ConSet = NewType("ConSet", conset(item_type=int, min_length=4)) # type: ignore
ConFrozenSet = NewType("ConFrozenSet", confrozenset(item_type=str, min_length=5)) # type: ignore
class ConstrainedModel(BaseModel):
conbytes_field: ConBytes
constr_field: ConStr
conint_field: ConInt
confloat_field: ConFloat
condecimal_field: ConDecimal
condate_field: ConDate
conlist_field: ConList
conset_field: ConSet
confrozenset_field: ConFrozenSet
conpositive_float_field: ConMyPositiveFloat
class MyFactory(ModelFactory):
__model__ = ConstrainedModel
result = MyFactory.build()
# we want to make sure that NewType is correctly unwrapped retaining
# original type and its attributes. More elaborate testing of constrained
# fields is done in tests/constraints/
assert isinstance(result.conbytes_field, bytes)
assert 2 <= len(result.conbytes_field) <= 4
assert isinstance(result.constr_field, str)
assert 10 <= len(result.constr_field) <= 15
assert isinstance(result.conint_field, int)
assert 100 < result.conint_field < 110
assert isinstance(result.confloat_field, float)
assert result.confloat_field < -100
assert isinstance(result.condecimal_field, Decimal)
assert Decimal(6) <= result.condecimal_field <= Decimal(8)
assert isinstance(result.condate_field, date)
assert result.condate_field > date.today()
assert isinstance(result.conlist_field, list)
assert len(result.conlist_field) >= 3
assert isinstance(result.conset_field, set)
assert len(result.conset_field) >= 4
assert isinstance(result.confrozenset_field, frozenset)
assert len(result.confrozenset_field) >= 5
assert isinstance(result.conpositive_float_field, float)
assert result.conpositive_float_field > 0
@pytest.mark.skipif(sys.version_info < (3, 12), reason="3.12 only syntax")
def test_type_alias(create_module: Callable[[str], ModuleType]) -> None:
module = create_module(
"""
from typing import Literal
from dataclasses import dataclass
type LiteralAlias = Literal["a", "b"]
@dataclass
class A:
field: LiteralAlias
""",
)
factory = DataclassFactory.create_factory(module.A)
result = factory.build()
assert result.field in {"a", "b"}
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