1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
"""Tests related to deferred evaluation of annotations introduced in Python 3.14 by PEP 649 and 749."""
import sys
from dataclasses import field
from typing import Annotated
import pytest
from annotated_types import MaxLen
from pydantic import (
BaseModel,
Field,
ValidationError,
field_serializer,
field_validator,
model_serializer,
model_validator,
)
from pydantic.dataclasses import dataclass
pytestmark = pytest.mark.skipif(
sys.version_info < (3, 14), reason='Requires deferred evaluation of annotations introduced in Python 3.14'
)
def test_deferred_annotations_model() -> None:
class Model(BaseModel):
a: Int
b: Str = 'a'
Int = int
Str = str
inst = Model(a='1', b=b'test')
assert inst.a == 1
assert inst.b == 'test'
def test_deferred_annotations_nested_model() -> None:
def outer():
def inner():
class Model(BaseModel):
ann: Annotated[List[Dict[str, str]], MaxLen(1)]
Dict = dict
return Model
List = list
Model = inner()
return Model
Model = outer()
with pytest.raises(ValidationError) as exc_info:
Model(ann=[{'a': 'b'}, {'c': 'd'}])
assert exc_info.value.errors()[0]['type'] == 'too_long'
def test_deferred_annotations_pydantic_dataclass() -> None:
@dataclass
class A:
a: Int = field(default=1)
Int = int
assert A(a='1').a == 1
def test_deferred_annotations_pydantic_dataclass_pydantic_field() -> None:
"""When initial support for Python 3.14 was added, this failed as support for the Pydantic
`Field()` function was implemented by writing directly to `__annotations__`.
"""
@dataclass
class A:
a: Int = Field(default=1)
Int = int
assert A(a='1').a == 1
def test_deferred_annotations_return_values() -> None:
class Model(BaseModel):
a: int
@model_validator(mode='after')
def check(self) -> Model:
return self
@model_validator(mode='before')
def before(cls, data) -> MyDict:
return data
@model_serializer(mode='plain')
def ser(self) -> MyDict:
return {'a': self.a}
@field_validator('a', mode='before')
def validate_a(cls, v) -> MyInt:
return v
@field_serializer('a', mode='plain')
def serialize_a(self, v) -> MyInt:
return v
MyDict = dict
MyInt = int
|
