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import typing
from fastapi import FastAPI
from fastapi.responses import JSONResponse
from fastapi.testclient import TestClient
from pydantic import BaseModel
app = FastAPI()
class JsonApiResponse(JSONResponse):
media_type = "application/vnd.api+json"
class Error(BaseModel):
status: str
title: str
class JsonApiError(BaseModel):
errors: typing.List[Error]
@app.get(
"/a",
response_class=JsonApiResponse,
responses={500: {"description": "Error", "model": JsonApiError}},
)
async def a():
pass # pragma: no cover
@app.get("/b", responses={500: {"description": "Error", "model": Error}})
async def b():
pass # pragma: no cover
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": {
"/a": {
"get": {
"responses": {
"500": {
"description": "Error",
"content": {
"application/vnd.api+json": {
"schema": {
"$ref": "#/components/schemas/JsonApiError"
}
}
},
},
"200": {
"description": "Successful Response",
"content": {"application/vnd.api+json": {"schema": {}}},
},
},
"summary": "A",
"operationId": "a_a_get",
}
},
"/b": {
"get": {
"responses": {
"500": {
"description": "Error",
"content": {
"application/json": {
"schema": {"$ref": "#/components/schemas/Error"}
}
},
},
"200": {
"description": "Successful Response",
"content": {"application/json": {"schema": {}}},
},
},
"summary": "B",
"operationId": "b_b_get",
}
},
},
"components": {
"schemas": {
"Error": {
"title": "Error",
"required": ["status", "title"],
"type": "object",
"properties": {
"status": {"title": "Status", "type": "string"},
"title": {"title": "Title", "type": "string"},
},
},
"JsonApiError": {
"title": "JsonApiError",
"required": ["errors"],
"type": "object",
"properties": {
"errors": {
"title": "Errors",
"type": "array",
"items": {"$ref": "#/components/schemas/Error"},
}
},
},
}
},
}
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