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Added test coverage to additional_response issue

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DJ Melisso 2025-12-14 17:05:12 -08:00
parent 4fffe81a71
commit 926f334a62
1 changed files with 165 additions and 0 deletions
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tests/test_additional_responses_no_mutation.py Normal file
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"""
Regression test: Ensure app-level responses with Union models and content/examples
don't accumulate duplicate $ref entries in anyOf arrays.
See https://github.com/fastapi/fastapi/pull/14463
"""
from fastapi import FastAPI
from pydantic import BaseModel
from fastapi.testclient import TestClient
class ModelA(BaseModel):
a: str
class ModelB(BaseModel):
b: str
app = FastAPI(
responses={
500: {
'model': ModelA | ModelB,
'content': {"application/json": {
'examples': {"Case A": {"value": "a"}}
}}
}
}
)
@app.get('/route1')
def route1():
return "test"
@app.get('/route2')
def route2():
return "test"
client = TestClient(app)
def test_openapi_schema():
response = client.get("/openapi.json")
assert response.status_code == 200, response.text
assert response.json() == {
"openapi": "3.1.0",
"info": {
"title": "FastAPI",
"version": "0.1.0"
},
"paths": {
"/route1": {
"get": {
"summary": "Route1",
"operationId": "route1_route1_get",
"responses": {
"200": {
"description": "Successful Response",
"content": {
"application/json": {
"schema": {}
}
}
},
"500": {
"description": "Internal Server Error",
"content": {
"application/json": {
"schema": {
"anyOf": [
{
"$ref": "#/components/schemas/ModelA"
},
{
"$ref": "#/components/schemas/ModelB"
}
],
"title": "Response 500 Route1 Route1 Get"
},
"examples": {
"Case A": {
"value": "a"
}
}
}
}
}
}
}
},
"/route2": {
"get": {
"summary": "Route2",
"operationId": "route2_route2_get",
"responses": {
"200": {
"description": "Successful Response",
"content": {
"application/json": {
"schema": {}
}
}
},
"500": {
"description": "Internal Server Error",
"content": {
"application/json": {
"schema": {
"anyOf": [
{
"$ref": "#/components/schemas/ModelA"
},
{
"$ref": "#/components/schemas/ModelB"
}
],
"title": "Response 500 Route2 Route2 Get"
},
"examples": {
"Case A": {
"value": "a"
}
}
}
}
}
}
}
}
},
"components": {
"schemas": {
"ModelA": {
"properties": {
"a": {
"type": "string",
"title": "A"
}
},
"type": "object",
"required": [
"a"
],
"title": "ModelA"
},
"ModelB": {
"properties": {
"b": {
"type": "string",
"title": "B"
}
},
"type": "object",
"required": [
"b"
],
"title": "ModelB"
}
}
}
}