Sync fastapi docs from b5ca1324 on 2025-12-07

tests/test_additional_properties_bool.py

@@ -0,0 +1,133 @@
+from typing import Union
+
+from dirty_equals import IsDict
+from fastapi import FastAPI
+from fastapi._compat import PYDANTIC_V2
+from fastapi.testclient import TestClient
+from pydantic import BaseModel, ConfigDict
+
+
+class FooBaseModel(BaseModel):
+    if PYDANTIC_V2:
+        model_config = ConfigDict(extra="forbid")
+    else:
+
+        class Config:
+            extra = "forbid"
+
+
+class Foo(FooBaseModel):
+    pass
+
+
+app = FastAPI()
+
+
+@app.post("/")
+async def post(
+    foo: Union[Foo, None] = None,
+):
+    return foo
+
+
+client = TestClient(app)
+
+
+def test_call_invalid():
+    response = client.post("/", json={"foo": {"bar": "baz"}})
+    assert response.status_code == 422
+
+
+def test_call_valid():
+    response = client.post("/", json={})
+    assert response.status_code == 200
+    assert response.json() == {}
+
+
+def test_openapi_schema():
+    response = client.get("/openapi.json")
+    assert response.status_code == 200, response.text
+    assert response.json() == {
+        "openapi": "3.1.0",
+        "info": {"title": "FastAPI", "version": "0.1.0"},
+        "paths": {
+            "/": {
+                "post": {
+                    "summary": "Post",
+                    "operationId": "post__post",
+                    "requestBody": {
+                        "content": {
+                            "application/json": {
+                                "schema": IsDict(
+                                    {
+                                        "anyOf": [
+                                            {"$ref": "#/components/schemas/Foo"},
+                                            {"type": "null"},
+                                        ],
+                                        "title": "Foo",
+                                    }
+                                )
+                                | IsDict(
+                                    # TODO: remove when deprecating Pydantic v1
+                                    {"$ref": "#/components/schemas/Foo"}
+                                )
+                            }
+                        }
+                    },
+                    "responses": {
+                        "200": {
+                            "description": "Successful Response",
+                            "content": {"application/json": {"schema": {}}},
+                        },
+                        "422": {
+                            "description": "Validation Error",
+                            "content": {
+                                "application/json": {
+                                    "schema": {
+                                        "$ref": "#/components/schemas/HTTPValidationError"
+                                    }
+                                }
+                            },
+                        },
+                    },
+                }
+            }
+        },
+        "components": {
+            "schemas": {
+                "Foo": {
+                    "properties": {},
+                    "additionalProperties": False,
+                    "type": "object",
+                    "title": "Foo",
+                },
+                "HTTPValidationError": {
+                    "properties": {
+                        "detail": {
+                            "items": {"$ref": "#/components/schemas/ValidationError"},
+                            "type": "array",
+                            "title": "Detail",
+                        }
+                    },
+                    "type": "object",
+                    "title": "HTTPValidationError",
+                },
+                "ValidationError": {
+                    "properties": {
+                        "loc": {
+                            "items": {
+                                "anyOf": [{"type": "string"}, {"type": "integer"}]
+                            },
+                            "type": "array",
+                            "title": "Location",
+                        },
+                        "msg": {"type": "string", "title": "Message"},
+                        "type": {"type": "string", "title": "Error Type"},
+                    },
+                    "type": "object",
+                    "required": ["loc", "msg", "type"],
+                    "title": "ValidationError",
+                },
+            }
+        },
+    }