🔥 Remove and update Pydantic v1 tests

tests/test_compat.py

@@ -1,20 +1,17 @@
-from typing import Any, Union
+from typing import Union
 
 from fastapi import FastAPI, UploadFile
 from fastapi._compat import (
     Undefined,
     _get_model_config,
-    get_cached_model_fields,
-    is_scalar_field,
     is_uploadfile_sequence_annotation,
-    may_v1,
 )
 from fastapi._compat.shared import is_bytes_sequence_annotation
 from fastapi.testclient import TestClient
 from pydantic import BaseModel, ConfigDict
 from pydantic.fields import FieldInfo
 
-from .utils import needs_py310, needs_py_lt_314
+from .utils import needs_py310
 
 
 def test_model_field_default_required():
@@ -26,18 +23,6 @@ def test_model_field_default_required():
     assert field.default is Undefined
 
 
-@needs_py_lt_314
-def test_v1_plain_validator_function():
-    from fastapi._compat import v1
-
-    # For coverage
-    def func(v):  # pragma: no cover
-        return v
-
-    result = v1.with_info_plain_validator_function(func)
-    assert result == {}
-
-
 def test_is_model_field():
     # For coverage
     from fastapi._compat import _is_model_field
@@ -165,33 +150,3 @@ def test_serialize_sequence_value_with_none_first_in_union():
     result = v2.serialize_sequence_value(field=field, value=["x", "y"])
     assert result == ["x", "y"]
     assert isinstance(result, list)
-
-
-@needs_py_lt_314
-def test_is_pv1_scalar_field():
-    from fastapi._compat import v1
-
-    # For coverage
-    class Model(v1.BaseModel):
-        foo: Union[str, dict[str, Any]]
-
-    fields = v1.get_model_fields(Model)
-    assert not is_scalar_field(fields[0])
-
-
-@needs_py_lt_314
-def test_get_model_fields_cached():
-    from fastapi._compat import v1
-
-    class Model(may_v1.BaseModel):
-        foo: str
-
-    non_cached_fields = v1.get_model_fields(Model)
-    non_cached_fields2 = v1.get_model_fields(Model)
-    cached_fields = get_cached_model_fields(Model)
-    cached_fields2 = get_cached_model_fields(Model)
-    for f1, f2 in zip(cached_fields, cached_fields2):
-        assert f1 is f2
-
-    assert non_cached_fields is not non_cached_fields2
-    assert cached_fields is cached_fields2

tests/test_inherited_custom_class.py

@@ -5,8 +5,6 @@ from fastapi import FastAPI
 from fastapi.testclient import TestClient
 from pydantic import BaseModel
 
-from .utils import needs_pydanticv1
-
 
 class MyUuid:
     def __init__(self, uuid_string: str):
@@ -67,46 +65,3 @@ def test_pydanticv2():
     assert response_pydantic.json() == {
         "a_uuid": "b8799909-f914-42de-91bc-95c819218d01"
     }
-
-
-# TODO: remove when deprecating Pydantic v1
-@needs_pydanticv1
-def test_pydanticv1():
-    from pydantic import v1
-
-    app = FastAPI()
-
-    @app.get("/fast_uuid")
-    def return_fast_uuid():
-        asyncpg_uuid = MyUuid("a10ff360-3b1e-4984-a26f-d3ab460bdb51")
-        assert isinstance(asyncpg_uuid, uuid.UUID)
-        assert type(asyncpg_uuid) is not uuid.UUID
-        with pytest.raises(TypeError):
-            vars(asyncpg_uuid)
-        return {"fast_uuid": asyncpg_uuid}
-
-    class SomeCustomClass(v1.BaseModel):
-        class Config:
-            arbitrary_types_allowed = True
-            json_encoders = {uuid.UUID: str}
-
-        a_uuid: MyUuid
-
-    @app.get("/get_custom_class")
-    def return_some_user():
-        # Test that the fix also works for custom pydantic classes
-        return SomeCustomClass(a_uuid=MyUuid("b8799909-f914-42de-91bc-95c819218d01"))
-
-    client = TestClient(app)
-
-    with client:
-        response_simple = client.get("/fast_uuid")
-        response_pydantic = client.get("/get_custom_class")
-
-    assert response_simple.json() == {
-        "fast_uuid": "a10ff360-3b1e-4984-a26f-d3ab460bdb51"
-    }
-
-    assert response_pydantic.json() == {
-        "a_uuid": "b8799909-f914-42de-91bc-95c819218d01"
-    }

tests/test_jsonable_encoder.py

@@ -10,6 +10,7 @@ from typing import Optional
 import pytest
 from fastapi._compat import Undefined
 from fastapi.encoders import jsonable_encoder
+from fastapi.exceptions import PydanticV1NotSupportedError
 from pydantic import BaseModel, Field, ValidationError
 
 from .utils import needs_pydanticv1
@@ -156,29 +157,16 @@ def test_encode_custom_json_encoders_model_pydanticv2():
     assert jsonable_encoder(subclass_model) == {"dt_field": "2019-01-01T08:00:00+00:00"}
 
 
-# TODO: remove when deprecating Pydantic v1
 @needs_pydanticv1
-def test_encode_custom_json_encoders_model_pydanticv1():
+def test_json_encoder_error_with_pydanticv1():
     from pydantic import v1
 
-    class ModelWithCustomEncoder(v1.BaseModel):
+    class ModelV1(v1.BaseModel):
-        dt_field: datetime
+        name: str
-
-        class Config:
-            json_encoders = {
-                datetime: lambda dt: dt.replace(
-                    microsecond=0, tzinfo=timezone.utc
-                ).isoformat()
-            }
 
-    class ModelWithCustomEncoderSubclass(ModelWithCustomEncoder):
+    data = ModelV1(name="test")
-        class Config:
+    with pytest.raises(PydanticV1NotSupportedError):
-            pass
+        jsonable_encoder(data)
-
-    model = ModelWithCustomEncoder(dt_field=datetime(2019, 1, 1, 8))
-    assert jsonable_encoder(model) == {"dt_field": "2019-01-01T08:00:00+00:00"}
-    subclass_model = ModelWithCustomEncoderSubclass(dt_field=datetime(2019, 1, 1, 8))
-    assert jsonable_encoder(subclass_model) == {"dt_field": "2019-01-01T08:00:00+00:00"}
 
 
 def test_encode_model_with_config():
@@ -214,27 +202,6 @@ def test_encode_model_with_default():
     }
 
 
-@needs_pydanticv1
-def test_custom_encoders():
-    from pydantic import v1
-
-    class safe_datetime(datetime):
-        pass
-
-    class MyModel(v1.BaseModel):
-        dt_field: safe_datetime
-
-    instance = MyModel(dt_field=safe_datetime.now())
-
-    encoded_instance = jsonable_encoder(
-        instance, custom_encoder={safe_datetime: lambda o: o.strftime("%H:%M:%S")}
-    )
-    assert encoded_instance["dt_field"] == instance.dt_field.strftime("%H:%M:%S")
-
-    encoded_instance2 = jsonable_encoder(instance)
-    assert encoded_instance2["dt_field"] == instance.dt_field.isoformat()
-
-
 def test_custom_enum_encoders():
     def custom_enum_encoder(v: Enum):
         return v.value.lower()
@@ -287,17 +254,6 @@ def test_encode_pure_path():
     assert jsonable_encoder({"path": test_path}) == {"path": str(test_path)}
 
 
-@needs_pydanticv1
-def test_encode_root():
-    from pydantic import v1
-
-    class ModelWithRoot(v1.BaseModel):
-        __root__: str
-
-    model = ModelWithRoot(__root__="Foo")
-    assert jsonable_encoder(model) == "Foo"
-
-
 def test_decimal_encoder_float():
     data = {"value": Decimal(1.23)}
     assert jsonable_encoder(data) == {"value": 1.23}

tests/test_pydantic_v1_error.py

@@ -8,7 +8,7 @@ if sys.version_info >= (3, 14):
     skip_module_if_py_gte_314()
 
 from fastapi import FastAPI
-from fastapi._compat.v1 import BaseModel
+from fastapi._compat.may_v1 import BaseModel
 from fastapi.exceptions import PydanticV1NotSupportedError