@Override
  public void setUp() throws Exception {
    super.setUp();
    /*
     * Class parameters must be raw, so we can't create a proxy with generic
     * type arguments. The created proxy only records calls and returns null, so
     * the type is irrelevant at runtime.
     */
    mock = mock(Cache.class);
    forward =
        new ForwardingCache<String, Boolean>() {
          @Override

   *
   * @since 10.0
   */
  public interface StatsCounter {
    /**
     * Records cache hits. This should be called when a cache request returns a cached value.
     *
     * @param count the number of hits to record
     * @since 11.0
     */
    void recordHits(int count);

    /**
     * Records cache misses. This should be called when a cache request returns a value that was not

    assertEquals("One event should be delivered.", 1, events.size());
    assertEquals("Correct string should be delivered.", EVENT, events.get(0));
  }

  /**
   * An {@link Executor} wanna-be that simply records the tasks it's given. Arguably the Worst
   * Executor Ever.
   *
   * @author cbiffle
   */
  public static class FakeExecutor implements Executor {
    List<Runnable> tasks = Lists.newArrayList();

    @Override

    class SubscribesToPrimitive {
      @Subscribe
      public void toInt(int i) {}
    }
    assertThrows(IllegalArgumentException.class, () -> bus.register(new SubscribesToPrimitive()));
  }

  /** Records thrown exception information. */
  private static final class RecordingSubscriberExceptionHandler
      implements SubscriberExceptionHandler {

    public SubscriberExceptionContext context;

    class SubscribesToPrimitive {
      @Subscribe
      public void toInt(int i) {}
    }
    assertThrows(IllegalArgumentException.class, () -> bus.register(new SubscribesToPrimitive()));
  }

  /** Records thrown exception information. */
  private static final class RecordingSubscriberExceptionHandler
      implements SubscriberExceptionHandler {

    public SubscriberExceptionContext context;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    /*
     * Class parameters must be raw, so we can't create a proxy with generic
     * type arguments. The created proxy only records calls and returns null, so
     * the type is irrelevant at runtime.
     */
    mock = mock(LoadingCache.class);
    forward =
        new ForwardingLoadingCache<String, Boolean>() {
          @Override

    assertEquals(ByteSource.empty(), source.slice(0, 3).slice(4, 3));
  }

  private static int getAndResetRecords(TestLogHandler logHandler) {
    int records = logHandler.getStoredLogRecords().size();
    logHandler.clear();
    return records;
  }

  private static void runFailureTest(ByteSource in, ByteSink out) {
    try {
      in.copyTo(out);
      fail();
    } catch (IOException expected) {

  private final AtomicReference<Throwable> threadFailure = new AtomicReference<>(null);

  /**
   * Records an exception so that it can be rethrown later in the test harness thread, triggering a
   * test case failure. Only the first failure is recorded; subsequent calls to this method from
   * within the same test have no effect.
   */
  public void threadRecordFailure(Throwable t) {

import com.google.common.collect.Lists;
import java.util.List;
import junit.framework.Assert;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A simple EventSubscriber mock that records Strings.
 *
 * <p>For testing fun, also includes a landmine method that EventBus tests are required not
 * to call ({@link #methodWithoutAnnotation(String)}).
 *
 * @author Cliff Biffle
 */

    }
  }

  /** Records that the current thread is about to wait on the specified guard. */
  @GuardedBy("lock")
  private void beginWaitingFor(Guard guard) {
    int waiters = guard.waiterCount++;
    if (waiters == 0) {
      // push guard onto activeGuards
      guard.next = activeGuards;
      activeGuards = guard;
    }
  }