public void testBinarySearch() {
    List<Integer> ints = Lists.newArrayList(0, 2, 3, 5, 7, 9);
    assertEquals(4, numberOrdering.binarySearch(ints, 7));
  }

  public void testSortedCopy() {
    List<@Nullable Integer> unsortedInts =
        unmodifiableList(Arrays.<@Nullable Integer>asList(5, 0, 3, null, 0, 9));
    List<@Nullable Integer> sortedInts = numberOrdering.nullsLast().sortedCopy(unsortedInts);

  public void testBinarySearch() {
    List<Integer> ints = Lists.newArrayList(0, 2, 3, 5, 7, 9);
    assertEquals(4, numberOrdering.binarySearch(ints, 7));
  }

  public void testSortedCopy() {
    List<@Nullable Integer> unsortedInts =
        unmodifiableList(Arrays.<@Nullable Integer>asList(5, 0, 3, null, 0, 9));
    List<@Nullable Integer> sortedInts = numberOrdering.nullsLast().sortedCopy(unsortedInts);