Sync fastapi docs from b5ca1324 on 2025-12-07

tests/test_union_forms.py

@@ -0,0 +1,156 @@
+from typing import Union
+
+from fastapi import FastAPI, Form
+from fastapi.testclient import TestClient
+from pydantic import BaseModel
+from typing_extensions import Annotated
+
+app = FastAPI()
+
+
+class UserForm(BaseModel):
+    name: str
+    email: str
+
+
+class CompanyForm(BaseModel):
+    company_name: str
+    industry: str
+
+
+@app.post("/form-union/")
+def post_union_form(data: Annotated[Union[UserForm, CompanyForm], Form()]):
+    return {"received": data}
+
+
+client = TestClient(app)
+
+
+def test_post_user_form():
+    response = client.post(
+        "/form-union/", data={"name": "John Doe", "email": "john@example.com"}
+    )
+    assert response.status_code == 200, response.text
+    assert response.json() == {
+        "received": {"name": "John Doe", "email": "john@example.com"}
+    }
+
+
+def test_post_company_form():
+    response = client.post(
+        "/form-union/", data={"company_name": "Tech Corp", "industry": "Technology"}
+    )
+    assert response.status_code == 200, response.text
+    assert response.json() == {
+        "received": {"company_name": "Tech Corp", "industry": "Technology"}
+    }
+
+
+def test_invalid_form_data():
+    response = client.post(
+        "/form-union/",
+        data={"name": "John", "company_name": "Tech Corp"},
+    )
+    assert response.status_code == 422, response.text
+
+
+def test_empty_form():
+    response = client.post("/form-union/")
+    assert response.status_code == 422, response.text
+
+
+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": {
+            "/form-union/": {
+                "post": {
+                    "summary": "Post Union Form",
+                    "operationId": "post_union_form_form_union__post",
+                    "requestBody": {
+                        "content": {
+                            "application/x-www-form-urlencoded": {
+                                "schema": {
+                                    "anyOf": [
+                                        {"$ref": "#/components/schemas/UserForm"},
+                                        {"$ref": "#/components/schemas/CompanyForm"},
+                                    ],
+                                    "title": "Data",
+                                }
+                            }
+                        },
+                        "required": True,
+                    },
+                    "responses": {
+                        "200": {
+                            "description": "Successful Response",
+                            "content": {"application/json": {"schema": {}}},
+                        },
+                        "422": {
+                            "description": "Validation Error",
+                            "content": {
+                                "application/json": {
+                                    "schema": {
+                                        "$ref": "#/components/schemas/HTTPValidationError"
+                                    }
+                                }
+                            },
+                        },
+                    },
+                }
+            }
+        },
+        "components": {
+            "schemas": {
+                "CompanyForm": {
+                    "properties": {
+                        "company_name": {"type": "string", "title": "Company Name"},
+                        "industry": {"type": "string", "title": "Industry"},
+                    },
+                    "type": "object",
+                    "required": ["company_name", "industry"],
+                    "title": "CompanyForm",
+                },
+                "HTTPValidationError": {
+                    "properties": {
+                        "detail": {
+                            "items": {"$ref": "#/components/schemas/ValidationError"},
+                            "type": "array",
+                            "title": "Detail",
+                        }
+                    },
+                    "type": "object",
+                    "title": "HTTPValidationError",
+                },
+                "UserForm": {
+                    "properties": {
+                        "name": {"type": "string", "title": "Name"},
+                        "email": {"type": "string", "title": "Email"},
+                    },
+                    "type": "object",
+                    "required": ["name", "email"],
+                    "title": "UserForm",
+                },
+                "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",
+                },
+            }
+        },
+    }