E[] array = createArrayWithNullElement();
    array[0] = null;
    collection = getSubjectGenerator().create(array);

    List<E> expectedWithDuplicateRemoved = asList(array).subList(1, getNumElements());
    expectContents(expectedWithDuplicateRemoved);
  }

  @CollectionFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION)
  @CollectionSize.Require(absent = {ZERO, ONE})

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class MapSizeTester<K, V> extends AbstractMapTester<K, V> {
  public void testSize() {
    assertEquals("size():", getNumElements(), getMap().size());
  }

public class ListReplaceAllTester<E> extends AbstractListTester<E> {
  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll() {
    getList().replaceAll(e -> samples.e3());
    expectContents(nCopies(getNumElements(), samples.e3()));
  }

  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll_changesSome() {
    getList().replaceAll(e -> e.equals(samples.e0()) ? samples.e3() : e);

    expectMissing(e0());
  }

  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testKeySetIteratorRemove() {
    int initialSize = getNumElements();
    Iterator<K> iterator = getMap().keySet().iterator();
    iterator.next();
    iterator.remove();
    assertEquals(initialSize - 1, getMap().size());
    assertEquals(initialSize - 1, getMap().inverse().size());

  public void testEquals_shorterList() {
    Collection<E> fewerElements = getSampleElements(getNumElements() - 1);
    assertFalse(
        "Lists of different sizes should not be equal.",
        getList().equals(new ArrayList<E>(fewerElements)));
  }

  public void testEquals_longerList() {
    Collection<E> moreElements = getSampleElements(getNumElements() + 1);
    assertFalse(
        "Lists of different sizes should not be equal.",

  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testElementSetRemovePropagatesToMultiset() {
    Set<E> elementSet = getMultiset().elementSet();
    int size = getNumElements();
    int expectedSize = size - getMultiset().count(e0());
    assertTrue(elementSet.remove(e0()));
    assertFalse(getMultiset().contains(e0()));
    assertEquals(expectedSize, getMultiset().size());
  }

  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require({SUPPORTS_REMOVE, SUPPORTS_PUT})
  public void testPropagatesRemoveThenAddToMultimap() {
    int oldSize = getNumElements();

    Collection<V> result = multimap().asMap().get(k0());
    assertTrue(result.remove(v0()));

    assertFalse(multimap().containsKey(k0()));
    assertFalse(multimap().containsEntry(k0(), v0()));

  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
  public void testHashCode_containingNull() {
    Collection<E> elements = getSampleElements(getNumElements() - 1);
    int expectedHashCode = 0;
    for (E element : elements) {
      expectedHashCode += ((element == null) ? 0 : element.hashCode());
    }

    elements.add(null);

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testRemovePropagatesToMultimap() {
    assertTrue(multimap().entries().remove(mapEntry(k0(), v0())));
    expectMissing(mapEntry(k0(), v0()));
    assertEquals(getNumElements() - 1, multimap().size());
    assertFalse(multimap().containsEntry(k0(), v0()));
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(SUPPORTS_REMOVE)

    assertArrayEquals("toArray(tooSmall) order should match list", createOrderedArray(), actual);
  }

  public void testToArray_largeEnough() {
    Object[] actual = getList().toArray(new Object[getNumElements()]);
    assertArrayEquals("toArray(largeEnough) order should match list", createOrderedArray(), actual);
  }

  private static void assertArrayEquals(String message, Object[] expected, Object[] actual) {