// The comparator used by this map.  It's the same as that of sortedDelegate,
  // except that when sortedDelegate's comparator is null, it points to a
  // non-null instance of Ordering.natural().
  // (cpovirk: Is sortedDelegate's comparator really ever null?)
  // The comparator will likely also differ because of our nullAccepting hack.
  // See the bottom of the file for more information about it.

 *
 * @author Jared Levy
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public class ImmutableMultisetTest extends TestCase {

  @J2ktIncompatible
  @GwtIncompatible // suite // TODO(cpovirk): add to collect/gwt/suites
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTestSuite(ImmutableMultisetTest.class);

    suite.addTest(
        MultisetTestSuiteBuilder.using(

import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Run collection tests on wrappers from {@link Multimaps}.
 *
 * @author Jared Levy
 */
@GwtIncompatible // suite // TODO(cpovirk): set up collect/gwt/suites version
public class MultimapsCollectionTest extends TestCase {

  private static final Feature<?>[] FOR_MAP_FEATURES_ONE = {
    CollectionSize.ONE,
    ALLOWS_NULL_VALUES,

  }

  abstract static class SleepingStopwatch {
    /** Constructor for use by subclasses. */
    protected SleepingStopwatch() {}

    /*
     * We always hold the mutex when calling this. TODO(cpovirk): Is that important? Perhaps we need
     * to guarantee that each call to reserveEarliestAvailable, etc. sees a value >= the previous?
     * Also, is it OK that we don't hold the mutex when sleeping?
     */

      boolean isNullable(Invokable<?, ?> invokable) {
        return FROM_DECLARATION_ANNOTATIONS_ONLY.isNullable(invokable)
            || containsNullable(invokable.getAnnotatedReturnType().getAnnotations());
        // TODO(cpovirk): Should we also check isNullableTypeVariable?
      }

      @Override
      boolean isNullable(Parameter param) {
        return FROM_DECLARATION_ANNOTATIONS_ONLY.isNullable(param)

   * row and column iteration ordering of the returned table.
   *
   * @throws NullPointerException if {@code table} has a null key
   */
  @SuppressWarnings("unchecked") // TODO(cpovirk): Make constructor accept wildcard types?
  public static <R, C, V> ArrayTable<R, C, V> create(Table<R, C, ? extends @Nullable V> table) {
    return (table instanceof ArrayTable)

  }

  /**
   * Creates and returns a new builder, configured to build {@code MinMaxPriorityQueue} instances
   * that use {@code comparator} to determine the least and greatest elements.
   */
  /*
   * TODO(cpovirk): Change to Comparator<? super B> to permit Comparator<@Nullable ...> and
   * Comparator<SupertypeOfB>? What we have here matches the immutable collections, but those also

    FROM_DECLARATION_AND_TYPE_USE_ANNOTATIONS {
      @Override
      boolean isNullable(Invokable<?, ?> invokable) {
        return FROM_DECLARATION_ANNOTATIONS_ONLY.isNullable(invokable)
        ;
        // TODO(cpovirk): Should we also check isNullableTypeVariable?
      }

      @Override
      boolean isNullable(Parameter param) {
        return FROM_DECLARATION_ANNOTATIONS_ONLY.isNullable(param)
        ;
      }

   *
   * @since 11.0
   */
  public static <E> ImmutableMultiset<E> copyHighestCountFirst(Multiset<E> multiset) {
    @SuppressWarnings("unchecked") // generics+arrays
    // TODO(cpovirk): Consider storing an Entry<?> instead of Entry<E>.
    Entry<E>[] entries = (Entry<E>[]) multiset.entrySet().toArray((Entry<E>[]) new Entry<?>[0]);
    Arrays.sort(entries, DecreasingCount.INSTANCE);

   *
   * @since 11.0
   */
  public static <E> ImmutableMultiset<E> copyHighestCountFirst(Multiset<E> multiset) {
    @SuppressWarnings("unchecked") // generics+arrays
    // TODO(cpovirk): Consider storing an Entry<?> instead of Entry<E>.
    Entry<E>[] entries = (Entry<E>[]) multiset.entrySet().toArray((Entry<E>[]) new Entry<?>[0]);
    Arrays.sort(entries, DecreasingCount.INSTANCE);