foo: str
    bar: str


class Model2(BaseModel):
    ref: Model1
    baz: str


class Model3(BaseModel):
    name: str
    age: int
    ref2: Model2


app = FastAPI()


@app.get(
    "/simple_include",
    response_model=Model2,
    response_model_include={"baz": ..., "ref": {"foo"}},
)
def simple_include():
    return Model2(

@app.get(
    "/response_model_model1-annotation_model2-return_same_model", response_model=User
)
def response_model_model1_annotation_model2_return_same_model() -> Item:
    return User(name="John", surname="Doe")


@app.get(
    "/response_model_model1-annotation_model2-return_exact_dict", response_model=User
)
def response_model_model1_annotation_model2_return_exact_dict() -> Item:

from fastapi import FastAPI
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Model(BaseModel):
    pass


class Model2(BaseModel):
    a: Model


class Model3(BaseModel):
    c: Model
    d: Model2


@app.get("/", response_model=Model3)
def f():
    return {"c": {}, "d": {"a": {}}}


client = TestClient(app)


def test_get_api_route():