await websocket.accept()  # pragma: no cover
    await websocket.send_text(f"Item: {item_id}")  # pragma: no cover
    await websocket.close()  # pragma: no cover


@sub_app.websocket("/ws/{item_id}")
async def subapp_websocket_endpoint(websocket: WebSocket, item_id: int):
    await websocket.accept()  # pragma: no cover
    await websocket.send_text(f"Item: {item_id}")  # pragma: no cover

				t.Fatalf("Index(b[%d:], q[:%d])=%d, want -1\n", i, j, idx)
			}
		}
		q[j-1] = 0
	}

	// Test differing alignments and sizes of q which always end on a page boundary.
	q[len(q)-1] = 1 // difference is only found on the last byte
	for j := 0; j < len(q); j++ {
		for i := range b {
			idx := Index(b[i:], q[j:])
			if idx != -1 {
				t.Fatalf("Index(b[%d:], q[%d:])=%d, want -1\n", i, j, idx)
			}
		}
	}

			printed = f[0] + "\t" + strings.Join(f[1:], " ")
		}

		want := fmt.Sprintf("%05d (%s:%d)\t%s", seq, input, lineno, printed)
		for len(output) > 0 && (output[0] < want || output[0] != want && len(output[0]) >= 5 && output[0][:5] == want[:5]) {
			if len(output[0]) >= 5 && output[0][:5] == want[:5] {
				t.Errorf("mismatched output:\nhave %s\nwant %s", output[0], want)
				output = output[1:]
				continue Diff
			}

		{"FALSE", false},
		{"\u0046alse", false},
	}

	for _, test := range checkTruthTests {
		t.Run(test.v, func(t *testing.T) {
			if out := CheckTruth(test.v); out != test.out {
				t.Errorf("CheckTruth(%s) want: %t, got: %t", test.v, test.out, out)
			}
		})
	}
}

func TestToStringKey(t *testing.T) {
	cases := []struct {
		values []interface{}
		key    string
	}{
		{[]interface{}{"a"}, "a"},

# Concorrência e async / await { #concurrency-and-async-await }

Detalhes sobre a sintaxe `async def` para *funções de operação de rota* e alguns conceitos de código assíncrono, concorrência e paralelismo.

## Com pressa? { #in-a-hurry }

<abbr title="too long; didn't read – muito longo; não li"><strong>TL;DR:</strong></abbr>

Se você estiver utilizando bibliotecas de terceiros que dizem para você chamar as funções com `await`, como:

```Python

And it has the same shape and structure that all your *path operation functions* have.

You can think of it as a *path operation function* without the "decorator" (without the `@app.get("/some-path")`).

And it can return anything you want.

In this case, this dependency expects:

* An optional query parameter `q` that is a `str`.
* An optional query parameter `skip` that is an `int`, and by default is `0`.

But in some cases you need to return a different status code than the default.

## Use case { #use-case }

For example, imagine that you want to return an HTTP status code of "OK" `200` by default.

But if the data didn't exist, you want to create it, and return an HTTP status code of "CREATED" `201`.

But you still want to be able to filter and convert the data you return with a `response_model`.

For those cases, you can use a `Response` parameter.

This means that you can send only the data that you want to update, leaving the rest intact.

/// note

`PATCH` is less commonly used and known than `PUT`.

And many teams use only `PUT`, even for partial updates.

You are **free** to use them however you want, **FastAPI** doesn't impose any restrictions.

But this guide shows you, more or less, how they are intended to be used.

    exit_limiter = CapacityLimiter(1)
    try:
        yield await run_in_threadpool(cm.__enter__)
    except Exception as e:
        ok = bool(
            await anyio.to_thread.run_sync(
                cm.__exit__, type(e), e, e.__traceback__, limiter=exit_limiter
            )
        )
        if not ok:
            raise e
    else:
        await anyio.to_thread.run_sync(

						Mode:  RetCompliance,
						Years: yearsPtr,
					},
				},
			},
			want: "Enabled: true, Mode: COMPLIANCE, Years: 2",
		},
		{
			name: "disabled case",
			c: Config{
				ObjectLockEnabled: "Disabled",
			},
			want: "Enabled: false",
		},
		{
			name: "empty case",
			c:    Config{},
			want: "Enabled: false",
		},
	}
	for _, tt := range tests {
		got := tt.c.String()