}

    manualExecutorTask[0].run();

    for (Future<?> result : results) {
      if (!result.isCancelled()) {
        result.get(10, SECONDS);
      }
      // TODO(cpovirk): Verify that the cancelled futures are exactly ones that we expect.
    }

    assertThat(logHandler.getStoredLogRecords()).isEmpty();
  }

  public void testAvoidsStackOverflow_manySubmitted() throws Exception {

   * }
   * }
   *
   * @param <X> The parameter type
   * @param typeParam the parameter type variable
   * @param typeArg the actual type to substitute
   */
  /*
   * TODO(cpovirk): Is there any way for us to support TypeParameter instances for type parameters
   * that have nullable bounds? Unfortunately, if we change the parameter to TypeParameter<? extends

    Class<?> rawType = type.getRawType();
    Object defaultValue = ArbitraryInstances.get(rawType);
    if (defaultValue != null) {
      return defaultValue;
    }

    // TODO(cpovirk): Support these types in ArbitraryInstances itself?
    if (rawType.equals(Predicate.class)) {
      return (Predicate<Object>) v -> (boolean) getDefaultValue(TypeToken.of(boolean.class));

/**
 * Unit test for {@link Throwables}.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@SuppressWarnings({
  "deprecation", // tests of numerous deprecated methods
  "nullness", // TODO(cpovirk): fix errors
})
@NullUnmarked
public class ThrowablesTest extends TestCase {
  // We're testing that the method is in fact equivalent to throwing the exception directly.
  @SuppressWarnings("ThrowIfUncheckedKnownUnchecked")

       */
      set(uncheckedCastNullableTToT(sourceResult));
      return;
    }

    if (!isInstanceOfThrowableClass(throwable, localExceptionType)) {
      setFuture(localInputFuture);
      // TODO(cpovirk): Test that fallback is not run in this case.
      return;
    }

    @SuppressWarnings("unchecked") // verified safe by isInstanceOfThrowableClass
    X castThrowable = (X) throwable;
    T fallbackResult;

    actsLikeIteratorHelper(emptyList());
  }

  public void testPeekingIteratorBehavesLikeIteratorOnSingletonIterable() {
    actsLikeIteratorHelper(singletonList(new Object()));
  }

  // TODO(cpovirk): instead of skipping, use a smaller number of steps
  @GwtIncompatible // works but takes 5 minutes to run
  public void testPeekingIteratorBehavesLikeIteratorOnThreeElementIterable() {

  @GwtIncompatible // invokeAccessibleNonThrowingMethod
  private static List<StackTraceElement> jlaStackTrace(Throwable t) {
    checkNotNull(t);
    /*
     * TODO(cpovirk): Consider optimizing iterator() to catch IOOBE instead of doing bounds checks.
     *
     * TODO(cpovirk): Consider the UnsignedBytes pattern if it performs faster and doesn't cause
     * AOSP grief.
     */
    return new AbstractList<StackTraceElement>() {
      /*

 * #dispatch} is expected to be called concurrently, it is idempotent.
 */
@J2ktIncompatible
@GwtIncompatible
final class ListenerCallQueue<L> {
  // TODO(cpovirk): consider using the logger associated with listener.getClass().
  private static final LazyLogger logger = new LazyLogger(ListenerCallQueue.class);

  // TODO(chrisn): promote AppendOnlyCollection for use here.

  @GwtIncompatible // invokeAccessibleNonThrowingMethod
  private static List<StackTraceElement> jlaStackTrace(Throwable t) {
    checkNotNull(t);
    /*
     * TODO(cpovirk): Consider optimizing iterator() to catch IOOBE instead of doing bounds checks.
     *
     * TODO(cpovirk): Consider the UnsignedBytes pattern if it performs faster and doesn't cause
     * AOSP grief.
     */
    return new AbstractList<StackTraceElement>() {
      /*

   * methods to accept null. We could avoid having unchecked casts in Converter.java itself if we
   * could perform a cast to LegacyConverter, but we can't because it's an internal-only class.
   *
   * TODO(cpovirk): So make it part of the open-source build, albeit package-private there?
   *
   * So we use uncheckedCastNullableTToT here. This is a weird usage of that method: The method is