!!! info
    In this example we use invented custom headers `X-Key` and `X-Token`.

    But in real cases, when implementing security, you would get more benefits from using the integrated [Security utilities (the next chapter)](../security/index.md){.internal-link target=_blank}.

## Dependencies errors and return values

You can use the same dependency *functions* you use normally.

### Dependency requirements

  final EventBus bus = new EventBus();

  public void testNoReentrantEvents() {
    ReentrantEventsHater hater = new ReentrantEventsHater();
    bus.register(hater);

    bus.post(FIRST);

    assertEquals(
        "ReentrantEventHater expected 2 events",
        Lists.<Object>newArrayList(FIRST, SECOND),
        hater.eventsReceived);
  }

  public class ReentrantEventsHater {
    boolean ready = true;

  final EventBus bus = new EventBus();

  public void testNoReentrantEvents() {
    ReentrantEventsHater hater = new ReentrantEventsHater();
    bus.register(hater);

    bus.post(FIRST);

    assertEquals(
        "ReentrantEventHater expected 2 events",
        Lists.<Object>newArrayList(FIRST, SECOND),
        hater.eventsReceived);
  }

  public class ReentrantEventsHater {
    boolean ready = true;

            <title>Script blocks</title>
            <para>No script blocks</para>
        </section>
    </chapter>
</root>'''
    }

    def rendersKnownSubtypes() {
        def sourceContent = parse('''
            <chapter>
                <section><title>Properties</title></section>
            </chapter>
        ''')

tennis

// teva : 2015-07-02 Teva Pharmaceutical Industries Limited
teva

// thd : 2015-04-02 Home Depot Product Authority, LLC
thd

// theater : 2015-03-19 Binky Moon, LLC
theater

// theatre : 2015-05-07 XYZ.COM LLC
theatre

// tiaa : 2015-07-23 Teachers Insurance and Annuity Association of America
tiaa

// tickets : 2015-02-05 XYZ.COM LLC

Aqui, com `ge=1`, `item_id` precisará ser um número inteiro maior que ("`g`reater than") ou igual ("`e`qual") a 1.

```Python hl_lines="8"
{!../../../docs_src/path_params_numeric_validations/tutorial004.py!}
```

## Validações numéricas: maior que e menor que ou igual

O mesmo se aplica para:

* `gt`: maior que (`g`reater `t`han)
* `le`: menor que ou igual (`l`ess than or `e`qual)

```Python hl_lines="9"

  - MPL-2.0-no-copyleft-exception
  - Ruby

restricted_licenses:
  - GPL-1.0-only
  - GPL-1.0-or-later
  - GPL-2.0-only
  - GPL-2.0-or-later
  - GPL-3.0-only
  - GPL-3.0-or-later
  - LGPL-2.0-only
  - LGPL-2.0-or-later
  - LGPL-2.1-only
  - LGPL-2.1-or-later
  - LGPL-3.0-only
  - LGPL-3.0-or-later
  - NPL-1.0
  - NPL-1.1
  - OSL-1.0
  - OSL-1.1
  - OSL-2.0
  - OSL-2.1
  - OSL-3.0
  - QPL-1.0

`Query`와 `Path`(나중에 볼 다른 것들도)를 사용하여 문자열 뿐만 아니라 숫자의 제약을 선언할 수 있습니다.

여기서 `ge=1`인 경우, `item_id`는 `1`보다 "크거나(`g`reater) 같은(`e`qual)" 정수형 숫자여야 합니다.

```Python hl_lines="8"
{!../../../docs_src/path_params_numeric_validations/tutorial004.py!}
```

## 숫자 검증: 크거나 같음 및 작거나 같음

동일하게 적용됩니다:

* `gt`: 크거나(`g`reater `t`han)
* `le`: 작거나 같은(`l`ess than or `e`qual)

```Python hl_lines="9"

	}

	// Attempt to create a volume to verify the permissions later.
	// MakeVol creates directory with 0777 perms.
	if err = disk.MakeVol(context.Background(), testCase.volName); err != nil {
		t.Fatalf("Creating a volume failed with %s expected to pass.", err)
	}

	// Attempt to create a file to verify the permissions later.
	// AppendFile creates file with 0666 perms.

!!! tip