}

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @MultisetFeature.Require(ENTRIES_ARE_VIEWS)
  public void testEntryViewReflectsRemove() {
    initThreeCopies();
    assertEquals(3, getMultiset().count(e0()));
    Multiset.Entry<E> entry = Iterables.getOnlyElement(getMultiset().entrySet());
    assertEquals(3, entry.getCount());
    assertTrue(getMultiset().remove(e0()));

  public void testRemoveAllIgnoresCount() {
    initThreeCopies();
    assertTrue(getMultiset().removeAll(Collections.singleton(e0())));
    assertEmpty(getMultiset());
  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRetainAllIgnoresCount() {
    initThreeCopies();
    List<E> contents = Helpers.copyToList(getMultiset());

  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @MultisetFeature.Require(ENTRIES_ARE_VIEWS)
  public void testEntryViewReflectsRemove() {
    initThreeCopies();
    assertEquals(3, getMultiset().count(e0()));
    Multiset.Entry<E> entry = Iterables.getOnlyElement(getMultiset().entrySet());
    assertEquals(3, entry.getCount());
    assertTrue(getMultiset().remove(e0()));

  public void testRemoveAllIgnoresCount() {
    initThreeCopies();
    assertTrue(getMultiset().removeAll(Collections.singleton(e0())));
    assertEmpty(getMultiset());
  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRetainAllIgnoresCount() {
    initThreeCopies();
    List<E> contents = Helpers.copyToList(getMultiset());

public class AbstractMultisetTester<E> extends AbstractCollectionTester<E> {
  protected final Multiset<E> getMultiset() {
    return (Multiset<E>) collection;
  }

  protected void initThreeCopies() {
    collection = getSubjectGenerator().create(e0(), e0(), e0());
  }

    assertEquals(expectedSize, getMultiset().size());
  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testElementSetRemoveDuplicatePropagatesToMultiset() {
    initThreeCopies();
    int size = getNumElements();
    int expectedSize = size - getMultiset().count(e0());
    Set<E> elementSet = getMultiset().elementSet();
    assertTrue(elementSet.remove(e0()));
    assertEmpty(getMultiset());

    getMultiset()
        .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count)));
    assertEquals(expected, actual);
  }

  public void testForEachEntryDuplicates() {
    initThreeCopies();
    List<Entry<E>> expected = Collections.singletonList(Multisets.immutableEntry(e0(), 3));
    List<Entry<E>> actual = new ArrayList<>();
    getMultiset()

public class AbstractMultisetTester<E> extends AbstractCollectionTester<E> {
  protected final Multiset<E> getMultiset() {
    return (Multiset<E>) collection;
  }

  protected void initThreeCopies() {
    collection = getSubjectGenerator().create(e0(), e0(), e0());
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testSetCount_threeToZero_supported() {
    initThreeCopies();
    assertSetCount(e0(), 0);
  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testSetCount_threeToOne_supported() {
    initThreeCopies();
    assertSetCount(e0(), 1);
  }

  @CollectionSize.Require(absent = ZERO)

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testSetCount_threeToZero_supported() {
    initThreeCopies();
    assertSetCount(e0(), 0);
  }

  @CollectionSize.Require(SEVERAL)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testSetCount_threeToOne_supported() {
    initThreeCopies();
    assertSetCount(e0(), 1);
  }

  @CollectionSize.Require(absent = ZERO)