private TransTransactNamedPipeResponse response;
    private byte[] outputBuffer;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        outputBuffer = new byte[1024];
        response = new TransTransactNamedPipeResponse(mockConfig, outputBuffer);
    }

    @Test
    void testConstructor() {
        // Verify that the response is created with correct configuration and buffer

from docs_src.response_cookies.tutorial001_py39 import app

client = TestClient(app)


def test_path_operation():
    response = client.post("/cookie/")
    assert response.status_code == 200, response.text
    assert response.json() == {"message": "Come to the dark side, we have cookies"}

    response = client.get("/")
    assert response.status_code == 200, response.text
    client = TestClient(app, base_url="http://subdomain.example.com")
    response = client.get("/")
    assert response.status_code == 200, response.text
    client = TestClient(app, base_url="http://invalidhost")
    response = client.get("/")

from docs_src.response_cookies.tutorial002_py39 import app

client = TestClient(app)


def test_path_operation():
    response = client.post("/cookie-and-object/")
    assert response.status_code == 200, response.text
    assert response.json() == {"message": "Come to the dark side, we have cookies"}

client = TestClient(app)


def test_normal():
    response = client.get("/user")
    assert response.json() == {
        "user": "john",
        "scopes": ["foo", "bar"],
        "data": [1, 2, 3],
    }


def test_override_data():
    app.dependency_overrides[get_data] = get_data_override
    response = client.get("/user")
    assert response.json() == {
        "user": "john",
        "scopes": ["foo", "bar"],

///

### Antes y después de la `response` { #before-and-after-the-response }

Puedes añadir código que se ejecute con la `request`, antes de que cualquier *path operation* la reciba.

Y también después de que se genere la `response`, antes de devolverla.

Por ejemplo, podrías añadir un custom header `X-Process-Time` que contenga el tiempo en segundos que tomó procesar la request y generar una response:

  }

  override fun reportedContentLength(response: Response): Long =
    when {
      !response.promisesBody() -> 0L
      response.isChunked -> -1L
      else -> response.headersContentLength()
    }

  override fun openResponseBodySource(response: Response): Source =
    when {
      !response.promisesBody() -> newFixedLengthSource(response.request.url, 0)
      response.isChunked -> newChunkedSource(response.request.url)

client = TestClient(app)


def test_return_defaults():
    response = client.get("/")
    assert response.json() == {"sub": {}}


def test_return_exclude_unset():
    response = client.get("/exclude_unset")
    assert response.json() == {"x": None, "y": "y"}


def test_return_exclude_defaults():
    response = client.get("/exclude_defaults")
    assert response.json() == {}


def test_return_exclude_none():

from fastapi import Depends, FastAPI, Response
from fastapi.testclient import TestClient

app = FastAPI()


async def response_status_setter(response: Response):
    response.status_code = 201


async def parent_dep(result=Depends(response_status_setter)):
    return result


@app.get("/", dependencies=[Depends(parent_dep)])
async def get_main():
    return {"msg": "Hello World"}


client = TestClient(app)

def test_recursive():
    client = TestClient(app)
    response = client.get("/items/recursive")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "sub_items": [{"name": "subitem", "sub_items": []}],
        "name": "item",
    }

    response = client.get("/items/recursive-submodel")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "name": "item",