Sync fastapi docs from b5ca1324 on 2025-12-07

tests/test_computed_fields.py

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+import pytest
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from .utils import needs_pydanticv2
+
+
+@pytest.fixture(name="client")
+def get_client(request):
+    separate_input_output_schemas = request.param
+    app = FastAPI(separate_input_output_schemas=separate_input_output_schemas)
+
+    from pydantic import BaseModel, computed_field
+
+    class Rectangle(BaseModel):
+        width: int
+        length: int
+
+        @computed_field
+        @property
+        def area(self) -> int:
+            return self.width * self.length
+
+    @app.get("/")
+    def read_root() -> Rectangle:
+        return Rectangle(width=3, length=4)
+
+    @app.get("/responses", responses={200: {"model": Rectangle}})
+    def read_responses() -> Rectangle:
+        return Rectangle(width=3, length=4)
+
+    client = TestClient(app)
+    return client
+
+
+@pytest.mark.parametrize("client", [True, False], indirect=True)
+@pytest.mark.parametrize("path", ["/", "/responses"])
+@needs_pydanticv2
+def test_get(client: TestClient, path: str):
+    response = client.get(path)
+    assert response.status_code == 200, response.text
+    assert response.json() == {"width": 3, "length": 4, "area": 12}
+
+
+@pytest.mark.parametrize("client", [True, False], indirect=True)
+@needs_pydanticv2
+def test_openapi_schema(client: TestClient):
+    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": {
+            "/": {
+                "get": {
+                    "summary": "Read Root",
+                    "operationId": "read_root__get",
+                    "responses": {
+                        "200": {
+                            "description": "Successful Response",
+                            "content": {
+                                "application/json": {
+                                    "schema": {"$ref": "#/components/schemas/Rectangle"}
+                                }
+                            },
+                        }
+                    },
+                }
+            },
+            "/responses": {
+                "get": {
+                    "summary": "Read Responses",
+                    "operationId": "read_responses_responses_get",
+                    "responses": {
+                        "200": {
+                            "description": "Successful Response",
+                            "content": {
+                                "application/json": {
+                                    "schema": {"$ref": "#/components/schemas/Rectangle"}
+                                }
+                            },
+                        }
+                    },
+                }
+            },
+        },
+        "components": {
+            "schemas": {
+                "Rectangle": {
+                    "properties": {
+                        "width": {"type": "integer", "title": "Width"},
+                        "length": {"type": "integer", "title": "Length"},
+                        "area": {"type": "integer", "title": "Area", "readOnly": True},
+                    },
+                    "type": "object",
+                    "required": ["width", "length", "area"],
+                    "title": "Rectangle",
+                }
+            }
+        },
+    }