client
        .newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain ->
            ifNoneMatch.compareAndSet(null, chain.request().header("If-None-Match"))
            chain.proceed(chain.request())
          },
        ).build()

    // Confirm the value is cached and intercepted.
    assertThat(get(url).body.string()).isEqualTo("A")

Si vous souhaitez intercepter des exceptions et créer une réponse personnalisée en fonction de cela, créez un [Gestionnaire d'exceptions personnalisé](../handling-errors.md#install-custom-exception-handlers).

## Utiliser des dépendances avec `yield` et `except` { #dependencies-with-yield-and-except }

      @SuppressWarnings("unchecked")
      Map<String, String> proxy =
          Reflection.newProxy(Map.class, new CheckSetUpInvocationHandler(map, setUpRan));
      return proxy;
    }
  }

  /**
   * Intercepts calls to a {@code Map} to check that {@code setUpRan} is true when they happen. Then
   * forwards the calls to the underlying {@code Map}.
   */

      @SuppressWarnings("unchecked")
      Map<String, String> proxy =
          Reflection.newProxy(Map.class, new CheckSetUpInvocationHandler(map, setUpRan));
      return proxy;
    }
  }

  /**
   * Intercepts calls to a {@code Map} to check that {@code setUpRan} is true when they happen. Then
   * forwards the calls to the underlying {@code Map}.
   */

    assertFalse(Thread.interrupted());
    try {
      delayedFuture.get(20000, MILLISECONDS);
      fail("expected to be interrupted");
    } catch (InterruptedException expected) {
    } catch (TimeoutException e) {
      throw new RuntimeException(e);
    }

    // we were interrupted, but it's been cleared now
    assertFalse(Thread.interrupted());

    assertFalse(sleeper.completed);

    assertFalse(Thread.interrupted());
    try {
      delayedFuture.get(20000, MILLISECONDS);
      fail("expected to be interrupted");
    } catch (InterruptedException expected) {
    } catch (TimeoutException e) {
      throw new RuntimeException(e);
    }

    // we were interrupted, but it's been cleared now
    assertFalse(Thread.interrupted());

    assertFalse(sleeper.completed);

          assertThrows(RuntimeException.class, () -> GcFinalization.await(latch));
      assertWrapsInterruptedException(expected);
    } finally {
      interruptenator.shutdown();
      Thread.interrupted();
    }
  }

  public void testAwaitDone_future_interrupted_interrupted() {
    Interruptenator interruptenator = new Interruptenator(Thread.currentThread());
    try {

    fakePool.execute(() -> Thread.currentThread().interrupt());
    // Run a task that expects that it is not interrupted while it is running.
    e.execute(() -> assertThat(Thread.currentThread().isInterrupted()).isFalse());

    // Run these together.
    fakePool.runAll();

    // Check that this thread has been marked as interrupted again now that the thread has been

  /**
   * Waits until the given future {@linkplain Future#isDone is done}, invoking the garbage collector
   * as necessary to try to ensure that this will happen.
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   */
  @SuppressWarnings("removal") // b/487687332
  public static void awaitDone(Future<?> future) {
    if (future.isDone()) {
      return;
    }
    long timeoutSeconds = timeoutSeconds();

    AtomicBoolean interrupted = new AtomicBoolean();
    // we need to use another thread because it will be interrupted and thus using
    // the current one, owned by JUnit, would make the test fail
    Thread thread =
        new Thread(
            () -> {
              terminated.set(shutdownAndAwaitTermination(service, 1L, SECONDS));
              interrupted.set(Thread.currentThread().isInterrupted());