.addTrustedCertificate(rootCertificate.certificate())
    .build();
OkHttpClient client = new OkHttpClient.Builder()
    .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager())
    .build();
```

Client Authentication
---------------------

The above scenario is representative of most TLS set ups: the client uses certificates to validate

from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(name="client")
def get_client():
    from docs_src.body_multiple_params.tutorial003_py310 import app

    client = TestClient(app)
    return client


@needs_py310
def test_post_body_valid(client: TestClient):
    response = client.put(
        "/items/5",
        json={
            "importance": 2,

from tests.utils import needs_pydanticv2


@pytest.fixture(name="client")
def get_client():
    from docs_src.request_form_models.tutorial002_an import app

    client = TestClient(app)
    return client


@needs_pydanticv2
def test_post_body_form(client: TestClient):
    response = client.post("/login/", data={"username": "Foo", "password": "secret"})
    assert response.status_code == 200

from tests.utils import needs_pydanticv1


@pytest.fixture(name="client")
def get_client():
    from docs_src.request_form_models.tutorial002_pv1 import app

    client = TestClient(app)
    return client


@needs_pydanticv1
def test_post_body_form(client: TestClient):
    response = client.post("/login/", data={"username": "Foo", "password": "secret"})
    assert response.status_code == 200

    return app


app = make_app(app)


def test_app():
    client = TestClient(app)
    with client.websocket_connect("/") as websocket:
        data = websocket.receive_text()
        assert data == "Hello, world!"


def test_router():
    client = TestClient(app)
    with client.websocket_connect("/router") as websocket:
        data = websocket.receive_text()

import org.codelibs.fess.suggest.concurrent.Deferred;
import org.codelibs.fess.suggest.exception.SuggesterException;
import org.opensearch.client.Client;
import org.opensearch.core.common.Strings;

public abstract class Request<T extends Response> {
    public Deferred<T>.Promise execute(final Client client) {
        final String error = getValidationError();
        if (!Strings.isNullOrEmpty(error)) {

import org.opensearch.client.Client;
import org.opensearch.index.query.QueryBuilder;

public interface SuggestWriter {
    SuggestWriterResult write(Client client, SuggestSettings settings, String index, SuggestItem[] items, boolean update);

    SuggestWriterResult delete(Client client, SuggestSettings settings, String index, String id);

```console
$ npm run generate-client

frontend-app@1.0.0 generate-client /home/user/code/frontend-app
> openapi-ts --input http://localhost:8000/openapi.json --output ./src/client --client axios
```

</div>

That command will generate code in `./src/client` and will use `axios` (the frontend HTTP library) internally.

### Try Out the Client Code

from .main import app

client = TestClient(app)


def test_read_item():
    response = client.get("/items/foo", headers={"X-Token": "coneofsilence"})
    assert response.status_code == 200
    assert response.json() == {
        "id": "foo",
        "title": "Foo",
        "description": "There goes my hero",
    }


def test_read_item_bad_token():

from tests.utils import needs_py39, needs_pydanticv1


@pytest.fixture(name="client")
def get_client():
    from docs_src.request_form_models.tutorial002_pv1_an_py39 import app

    client = TestClient(app)
    return client


# TODO: remove when deprecating Pydantic v1
@needs_pydanticv1
@needs_py39
def test_post_body_form(client: TestClient):
    response = client.post("/login/", data={"username": "Foo", "password": "secret"})