* `seek(offset)`: Перейти к байту на позиции `offset` (`int`) в файле.
    * Наример, `await myfile.seek(0)` перейдет к началу файла.
    * Это особенно удобно, если вы один раз выполнили команду `await myfile.read()`, а затем вам нужно прочитать содержимое файла еще раз.
* `close()`: Закрыть файл.

Поскольку все эти методы являются `async` методами, вам следует использовать "await" вместе с ними.

        override fun onResponse(
          call: Call,
          response: Response,
        ) {
          response.close()
          latch.countDown()
        }
      },
    )
    latch.await()
    assertThat(call.isCanceled()).isTrue()
    assertThat(exceptionRef.get()).isNotNull()
  }

  @Test
  fun timeoutProcessing() {
    server.enqueue(
      MockResponse.Builder()

⤴️ 👥 💪 ✍ `AsyncClient` ⏮️ 📱, & 📨 🔁 📨 ⚫️, ⚙️ `await`.

```Python hl_lines="9-12"
{!../../docs_src/async_tests/test_main.py!}
```

👉 🌓:

```Python
response = client.get('/')
```

...👈 👥 ⚙️ ⚒ 👆 📨 ⏮️ `TestClient`.

/// tip

🗒 👈 👥 ⚙️ 🔁/⌛ ⏮️ 🆕 `AsyncClient` - 📨 🔁.

///

## 🎏 🔁 🔢 🤙

        elif is_gen_callable(call) or is_async_gen_callable(call):
            solved = await solve_generator(
                call=call, stack=async_exit_stack, sub_values=solved_result.values
            )
        elif is_coroutine_callable(call):
            solved = await call(**solved_result.values)
        else:
            solved = await run_in_threadpool(call, **solved_result.values)
        if sub_dependant.name is not None:

                              barrier.await(1, SECONDS);

                              // WAIT #2
                              barrier.await(1, SECONDS);
                              assertTrue(executor.isShutdown());
                              assertFalse(executor.isTerminated());

                              // WAIT #3
                              barrier.await(1, SECONDS);
                              return null;

```Python hl_lines="9-12"
{!../../docs_src/async_tests/test_main.py!}
```

Isso é equivalente a:

```Python
response = client.get('/')
```

...que nós utilizamos para fazer as nossas requisições utilizando o `TestClient`.

/// tip | "Dica"

Note que nós estamos utilizando async/await com o novo `AsyncClient` - a requisição é assíncrona.

///

**FastAPI** provides the same `WebSocket` directly just as a convenience for you, the developer. But it comes directly from Starlette.

///

## Await for messages and send messages

In your WebSocket route you can `await` for messages and send messages.

```Python hl_lines="48-52"
{!../../docs_src/websockets/tutorial001.py!}
```

You can receive and send binary, text, and JSON data.

        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const script = require('./.github/workflows/create_issue.js')

    callback.await(server.url("/a")).assertBody("abc")
    client.newCall(Request.Builder().url(server.url("/b")).build()).enqueue(callback)
    callback.await(server.url("/b")).assertBody("def")
    client.newCall(Request.Builder().url(server.url("/c")).build()).enqueue(callback)
    callback.await(server.url("/c")).assertBody("ghi")

            });
        }

        // start all threads at once
        try {
            startLatch.await();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // wait for all thread to end
        try {
            endLatch.await();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }