* asynchronous derivations.
   *
   * <p>Throwing an exception from this method is equivalent to returning a failing {@code Future}.
   */
  ListenableFuture<O> apply(@ParametricNullness I input) throws Exception;

import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Test for {@link ListenableFuture}. */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class ListenableFutureTest extends TestCase {
  public void testNoNewApis() throws Exception {
    assertWithMessage(

  private static class QueuingExecutor implements Executor {
    private final Deque<Runnable> tasks = new ArrayDeque<>();

    @Override
    public void execute(Runnable task) {
      tasks.add(task);
    }

    private void runNext() {
      tasks.removeFirst().run();
    }
  }

  public void testAsyncReload() throws Exception {
    AtomicInteger loadCount = new AtomicInteger();

 *
 * @author Nishant Thakkar
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class FuturesTransformTest extends AbstractChainedListenableFutureTest<String> {
  private static final String RESULT_DATA = "SUCCESS";
  private static final UndeclaredThrowableException WRAPPED_EXCEPTION =
      new UndeclaredThrowableException(EXCEPTION);

  @Override

    /**
     * Closes the crawler client and releases any resources associated with it.
     * This default implementation does nothing.
     *
     * @throws Exception if an error occurs during closing
     */
    @Override
    default void close() throws Exception {
        // nothing
    }

            count = count + 1;

            validPluginCounts.put(pluginArtifactId, count);
        }

        assertNotNull(testPlugin);

        List<PluginExecution> executions = testPlugin.getExecutions();

        assertEquals(1, executions.size());
    }

     *
     * @param actionListener the action listener for handling the response
     * @param exceptionListener the exception listener for handling exceptions
     */
    public void connect(final Consumer<HttpURLConnection> actionListener, final Consumer<Exception> exceptionListener) {
        final Runnable task = () -> {
            final String finalUrl;
            if (paramList != null) {

import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.TermQuery;
import org.codelibs.fess.Constants;
import org.codelibs.fess.entity.QueryContext;
import org.codelibs.fess.exception.InvalidQueryException;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.util.DfTypeUtil;
import org.junit.jupiter.api.Test;

    checkNotNull(loader);
    checkNotNull(executor);
    return new CacheLoader<K, V>() {
      @Override
      public V load(K key) throws Exception {
        return loader.load(key);
      }

      @Override
      public ListenableFuture<V> reload(K key, V oldValue) {
        ListenableFutureTask<V> task =

    barrier.await(1, SECONDS);
    assertFalse(executor.isShutdown());
    assertFalse(executor.isTerminated());

    executor.shutdown();
    assertTrue(executor.isShutdown());
    assertThrows(RejectedExecutionException.class, () -> executor.submit(() -> {}));
    assertFalse(executor.isTerminated());

    // WAIT #2
    barrier.await(1, SECONDS);
    assertFalse(executor.awaitTermination(20, MILLISECONDS));