public void testReplaceEmptyValues() {
    int size = multimap().size();
    List<V> values = asList(v0(), v2(), v3());
    multimap().replaceValues(k3(), values);
    assertGet(k3(), values);
    assertEquals(size + values.size(), multimap().size());
  }

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testReplaceValuesWithEmpty() {
    int size = multimap().size();

      assertEquals(size, multimap().size());
    } else {
      assertEquals(Lists.newArrayList(v3()), Lists.newArrayList(values));
      assertEquals(size + 1, multimap().size());
    }
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)
  public void testPutAllNullValueNullFirst_unsupported() {
    int size = getNumElements();

    assertThrows(

  @BeforeExperiment
  void setUp() {
    checkArgument(size > 0, "empty collection not supported");
    Set<Integer> set = new LinkedHashSet<>(size);

    Random random = new Random();
    while (set.size() < size) {
      set.add(random.nextInt());
    }
    List<Integer> list = new ArrayList<>(set);
    inputOrder.arrange(list);
    input = ImmutableList.copyOf(list);
  }

  @Benchmark
  int collections(int reps) {

      MoreFiles.asCharSink(fooCopy, UTF_8).write("boo");
      assertThat(MoreFiles.asByteSource(fooPath).size())
          .isEqualTo(MoreFiles.asByteSource(fooCopy).size());
      assertThat(MoreFiles.equal(fooPath, fooCopy)).isFalse();

      // should also assert that a Path that erroneously reports a size 0 can still be compared,
      // not sure how to do that with the Path API
    }
  }

  @CanIgnoreReturnValue
  @CheckForNull
  MoveDesc<E> removeAt(int index) {
    checkPositionIndex(index, size);
    modCount++;
    size--;
    if (size == index) {
      queue[size] = null;
      return null;
    }
    E actualLastElement = elementData(size);
    int lastElementAt = heapForIndex(size).swapWithConceptuallyLastElement(actualLastElement);
    if (lastElementAt == index) {

  public void testSubList_size() {
    List<E> list = getList();
    int size = getNumElements();
    assertEquals(size, list.subList(0, size).size());
    assertEquals(size - 1, list.subList(0, size - 1).size());
    assertEquals(size - 1, list.subList(1, size).size());
    assertEquals(0, list.subList(size, size).size());
    assertEquals(0, list.subList(0, 0).size());
  }

  @CollectionSize.Require(absent = {ZERO})

  public void testSubList_size() {
    List<E> list = getList();
    int size = getNumElements();
    assertEquals(size, list.subList(0, size).size());
    assertEquals(size - 1, list.subList(0, size - 1).size());
    assertEquals(size - 1, list.subList(1, size).size());
    assertEquals(0, list.subList(size, size).size());
    assertEquals(0, list.subList(0, 0).size());
  }

  @CollectionSize.Require(absent = {ZERO})

  public void testReplaceEmptyValues() {
    int size = multimap().size();
    List<V> values = asList(v0(), v2(), v3());
    multimap().replaceValues(k3(), values);
    assertGet(k3(), values);
    assertEquals(size + values.size(), multimap().size());
  }

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testReplaceValuesWithEmpty() {
    int size = multimap().size();

    for (int i = 0; i < expected.size(); i++) {
      actual.add(q.pollFirst());
    }
    assertEquals(expected, actual);
  }

  public void testCorrectOrdering_smallHeapsPollFirst() {
    for (int size = 2; size < 16; size++) {
      for (int attempts = 0; attempts < size * (size - 1); attempts++) {
        ArrayList<Integer> elements = createOrderedList(size);

  @BeforeExperiment
  void setUp() {
    checkArgument(size > 0, "empty collection not supported");
    Set<Integer> set = new LinkedHashSet<>(size);

    Random random = new Random();
    while (set.size() < size) {
      set.add(random.nextInt());
    }
    List<Integer> list = new ArrayList<>(set);
    inputOrder.arrange(list);
    input = ImmutableList.copyOf(list);
  }

  @Benchmark
  int collections(int reps) {