import com.google.common.collect.testing.features.CollectionFeature;
import java.util.Collections;
import org.junit.Ignore;

/**
 * Tests for {@code Multiset.add}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.

import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for Multimaps.filterEntries().asMap().
 *
 * @author Jared Levy
 */
@GwtIncompatible(value = "untested")
@NullUnmarked
public class MultimapsFilterEntriesAsMapTest extends AbstractMultimapAsMapImplementsMapTest {
  private static final Predicate<Entry<String, Integer>> PREDICATE =

import java.util.List;
import java.util.SortedSet;
import org.jspecify.annotations.NullMarked;

/**
 * Create string sets for testing collections that are sorted by natural ordering.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public abstract class TestStringSortedSetGenerator extends TestStringSetGenerator
    implements TestSortedSetGenerator<String> {

  @Override

import java.util.Objects;
import org.jspecify.annotations.Nullable;

/**
 * Implementation of the {@code equals}, {@code hashCode}, and {@code toString} methods of {@code
 * Entry}.
 *
 * @author Jared Levy
 */
@GwtCompatible
abstract class AbstractMapEntry<K extends @Nullable Object, V extends @Nullable Object>
    implements Entry<K, V> {

  @Override
  @ParametricNullness
  public abstract K getKey();

 * AbstractMapBasedMultimap} that converts the returned collections into {@code Lists}. The {@link
 * #createCollection} method must return a {@code List}.
 *
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
abstract class AbstractListMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMapBasedMultimap<K, V> implements ListMultimap<K, V> {
  /**

import java.util.List;
import org.jspecify.annotations.NullMarked;

/**
 * An abstract {@code TestMultisetGenerator} for generating multisets containing enum values.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public abstract class TestEnumMultisetGenerator implements TestMultisetGenerator<AnEnum> {
  @Override
  public SampleElements<AnEnum> samples() {
    return new Enums();
  }

import java.util.Map;
import java.util.Set;
import junit.framework.TestSuite;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests a {@code Multiset}
 * implementation.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtIncompatible
public class MultisetTestSuiteBuilder<E>
    extends AbstractCollectionTestSuiteBuilder<MultisetTestSuiteBuilder<E>, E> {

 * in O(1).
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#multiset">{@code Multiset}</a>.
 *
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
@J2ktIncompatible
@SuppressWarnings("EnumOrdinal") // This is one of the low-level utilities where it's suitable.

import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullMarked;

/**
 * Unit test for {@link HashMultiset}.
 *
 * @author Kevin Bourrillion
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public class HashMultisetTest extends TestCase {

  @J2ktIncompatible
  @GwtIncompatible // suite
  @AndroidIncompatible // test-suite builders
  public static Test suite() {

/**
 * A generic JUnit test which tests {@code poll()} operations on a queue. Can't be invoked directly;
 * please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.