}

    @Test
    @DisplayName("renew: invokes getSubject and returns self")
    void testRenewInvokesGetSubjectAndReturnsSelf() {
        JAASAuthenticator auth = spy(new JAASAuthenticator());
        // Avoid real JAAS by stubbing getSubject
        doReturn(new Subject()).when(auth).getSubject();

        // Act
        CredentialsInternal result = auth.renew();

        // Assert interaction and return value

 * MoreExecutors#listeningDecorator(ExecutorService)}.
 *
 * @author Chris Povirk
 * @since 10.0
 */
@DoNotMock(
    "Use TestingExecutors.sameThreadScheduledExecutor, or wrap a real Executor from "
        + "java.util.concurrent.Executors with MoreExecutors.listeningDecorator")
@GwtIncompatible
public interface ListeningExecutorService extends ExecutorService {
  /**

   * next} field is lazily initialized. The type of that field would be {@code @Nullable T}, and the
   * code would be responsible for populating a "real" {@code T} (which might still be the value
   * {@code null}!) before returning it to callers. Depending on how the code is structured, a
   * nullness analysis might not understand that the field has been populated. To avoid that problem

	dataUsageBloomName     = ".bloomcycle.bin"
	dataUsageBloomNamePath = bucketMetaPrefix + SlashSeparator + dataUsageBloomName

	backgroundHealInfoPath = bucketMetaPrefix + SlashSeparator + ".background-heal.json"

	dataUsageCacheName = ".usage-cache.bin"
)

// storeDataUsageInBackend will store all objects sent on the dui channel until closed.

In many frameworks and systems just handling security and authentication takes a big amount of effort and code (in many cases it can be 50% or more of all the code written).

**FastAPI** provides several tools to help you deal with **Security** easily, rapidly, in a standard way, without having to study and learn all the security specifications.

But first, let's check some small concepts.

## In a hurry? { #in-a-hurry }

then verify that requests were made as expected.

Because it exercises your full HTTP stack, you can be confident that you're
testing everything. You can even copy & paste HTTP responses from your real web
server to create representative test cases. Or test that your code survives in
awkward-to-reproduce situations like 500 errors or slow-loading responses.


### Example

)
```

/// warning | Advertencia

Las funciones adicionales de soporte `fake_password_hasher` y `fake_save_user` son solo para demostrar un posible flujo de datos, pero por supuesto no proporcionan ninguna seguridad real.

///

## Reducir duplicación

Reducir la duplicación de código es una de las ideas centrales en **FastAPI**.

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   * than a one-character array containing the character itself. This enables the escaping algorithm
   * to perform more efficiently.
   *
   * <p>An escaper is expected to be able to deal with any {@code char} value, so this method should
   * not throw any exceptions.
   *
   * @param c the character to escape if necessary
   * @return the replacement characters, or {@code null} if no escaping was needed
   */

   */
  public static Builder builder() {
    return new Builder();
  }

  /**
   * A builder for simple, fast escapers.
   *
   * <p>Typically an escaper needs to deal with the escaping of high valued characters or code
   * points. In these cases it is necessary to extend either {@link ArrayBasedCharEscaper} or {@link