}

  public void testEqualsForEmptyMap() {
    Map<K, V> map;
    try {
      map = makeEmptyMap();
    } catch (UnsupportedOperationException e) {
      return;
    }

    // Explicitly call `equals`; `assertEquals` might return fast
    assertTrue(map.equals(map));
    assertTrue(makeEmptyMap().equals(map));
    assertEquals(Collections.emptyMap(), map);
    assertFalse(map.equals(Collections.emptySet()));

  }

  public void testEqualsForEmptyMap() {
    Map<K, V> map;
    try {
      map = makeEmptyMap();
    } catch (UnsupportedOperationException e) {
      return;
    }

    // Explicitly call `equals`; `assertEquals` might return fast
    assertTrue(map.equals(map));
    assertTrue(makeEmptyMap().equals(map));
    assertEquals(Collections.emptyMap(), map);
    assertFalse(map.equals(Collections.emptySet()));

  }

  @Override
  protected SortedMap<String, Integer> makeEmptyMap() {
    return new SimpleForwardingSortedMap<>(
        new TreeMap<String, Integer>(Ordering.<String>natural().nullsFirst()));
  }

  @Override
  protected SortedMap<String, Integer> makePopulatedMap() {
    final SortedMap<String, Integer> sortedMap = makeEmptyMap();
    sortedMap.put("one", 1);
    sortedMap.put("two", 2);

  }

  @Override
  protected SortedMap<String, Integer> makeEmptyMap() {
    return new SimpleForwardingSortedMap<>(
        new TreeMap<String, Integer>(Ordering.<String>natural().nullsFirst()));
  }

  @Override
  protected SortedMap<String, Integer> makePopulatedMap() {
    final SortedMap<String, Integer> sortedMap = makeEmptyMap();
    sortedMap.put("one", 1);
    sortedMap.put("two", 2);

import java.util.Map;

@GwtCompatible
public class ImmutableMapWithBadHashesMapInterfaceTest
    extends AbstractImmutableMapMapInterfaceTest<Object, Integer> {
  @Override
  protected Map<Object, Integer> makeEmptyMap() {
    throw new UnsupportedOperationException();
  }

  @Override
  protected Map<Object, Integer> makePopulatedMap() {
    Colliders colliders = new Colliders();
    return ImmutableMap.of(

import java.util.Map;

@GwtCompatible
public class RegularImmutableMapMapInterfaceTest
    extends AbstractImmutableMapMapInterfaceTest<String, Integer> {
  @Override
  protected Map<String, Integer> makeEmptyMap() {
    return ImmutableMap.of();
  }

  @Override
  protected Map<String, Integer> makePopulatedMap() {
    return ImmutableMap.of("one", 1, "two", 2, "three", 3);
  }

  @Override

 *
 * @author Isaac Shum
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class MapsTransformValuesTest extends AbstractMapsTransformValuesTest {
  @Override
  protected Map<String, String> makeEmptyMap() {
    return Maps.transformValues(Maps.<String, String>newHashMap(), Functions.<String>identity());
  }

  @Override
  protected Map<String, String> makePopulatedMap() {

    extends AbstractMultimapAsMapImplementsMapTest {

  public UnmodifiableMultimapAsMapImplementsMapTest() {
    super(false, true, false);
  }

  @Override
  protected Map<String, Collection<Integer>> makeEmptyMap() {
    return Multimaps.unmodifiableMultimap(LinkedHashMultimap.<String, Integer>create()).asMap();
  }

  @Override
  protected Map<String, Collection<Integer>> makePopulatedMap() {

    super(true, true, false, false, false);
  }

  @Override
  protected String getKeyNotInPopulatedMap() {
    throw new UnsupportedOperationException();
  }

  @Override
  protected Map<String, Integer> makeEmptyMap() {
    throw new UnsupportedOperationException();
  }

  @Override
  Table<String, Character, Integer> makeTable() {
    return ArrayTable.create(

import java.util.Map;

@GwtCompatible
public class ImmutableMapWithBadHashesMapInterfaceTest
    extends AbstractImmutableMapMapInterfaceTest<Object, Integer> {
  @Override
  protected Map<Object, Integer> makeEmptyMap() {
    throw new UnsupportedOperationException();
  }

  @Override
  protected Map<Object, Integer> makePopulatedMap() {
    Colliders colliders = new Colliders();
    return ImmutableMap.of(