array[getNumElements()]);
    // array[getNumElements() + 1] might or might not have been nulled
  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testToArray_oversizedArray_ordered() {
    E[] array = getSubjectGenerator().createArray(getNumElements() + 2);
    array[getNumElements()] = e3();
    array[getNumElements() + 1] = e3();
    assertSame(

  public void testAddAtIndex_middle() {
    getList().add(getNumElements() / 2, e3());
    expectAdded(getNumElements() / 2, e3());
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
  @CollectionSize.Require(absent = ZERO)
  public void testAddAtIndex_end() {
    getList().add(getNumElements(), e3());
    expectAdded(getNumElements(), e3());
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)

  public void testSizeNullKey() {
    initMultimapWithNullKey();
    assertEquals(getNumElements(), multimap().size());
    assertFalse(multimap().isEmpty());
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(ALLOWS_NULL_VALUES)
  public void testSizeNullValue() {
    initMultimapWithNullValue();
    assertEquals(getNumElements(), multimap().size());
    assertFalse(multimap().isEmpty());
  }

  protected int getNumElements() {
    return getSubjectGenerator().getCollectionSize().getNumElements();
  }

  protected Collection<E> getSampleElements(int howMany) {
    return getSubjectGenerator().getSampleElements(howMany);
  }

  protected Collection<E> getSampleElements() {
    return getSampleElements(getNumElements());
  }

  /**

  public void testPutEmpty() {
    int size = getNumElements();

    assertGet(k3(), ImmutableList.<V>of());

    assertTrue(multimap().put(k3(), v3()));

    assertGet(k3(), v3());
    assertEquals(size + 1, multimap().size());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutPresent() {
    int size = getNumElements();

    assertGet(k0(), v0());

  public void testPutEmpty() {
    int size = getNumElements();

    assertGet(k3(), ImmutableList.<V>of());

    assertTrue(multimap().put(k3(), v3()));

    assertGet(k3(), v3());
    assertEquals(size + 1, multimap().size());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutPresent() {
    int size = getNumElements();

    assertGet(k0(), v0());

        getList(),
        getList().subList(0, getNumElements()));
  }

  @ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
  @CollectionSize.Require(absent = ZERO)
  public void testSubList_subListRemoveAffectsOriginal() {
    List<E> subList = getList().subList(0, 1);
    subList.remove(0);
    List<E> expected = asList(createSamplesArray()).subList(1, getNumElements());
    expectContents(expected);
  }

  public void testSizeNullKey() {
    initMultimapWithNullKey();
    assertEquals(getNumElements(), multimap().size());
    assertFalse(multimap().isEmpty());
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(ALLOWS_NULL_VALUES)
  public void testSizeNullValue() {
    initMultimapWithNullValue();
    assertEquals(getNumElements(), multimap().size());
    assertFalse(multimap().isEmpty());
  }

  protected int getNumElements() {
    return getSubjectGenerator().getCollectionSize().getNumElements();
  }

  protected Collection<E> getSampleElements(int howMany) {
    return getSubjectGenerator().getSampleElements(howMany);
  }

  protected Collection<E> getSampleElements() {
    return getSampleElements(getNumElements());
  }

  /**

  }

  public void testListIterator_tooHigh() {
    assertThrows(
        IndexOutOfBoundsException.class, () -> getList().listIterator(getNumElements() + 1));
  }

  public void testListIterator_atSize() {
    assertNotNull(getList().listIterator(getNumElements()));
    // TODO: run the iterator through ListIteratorTester
  }

  /**