if (unsafeComparatorAvailable()) {
      assertThat(defaultComparator).isInstanceOf(UnsafeComparator.class);
    } else {
      assertThat(defaultComparator).isEqualTo(UnsignedBytes.lexicographicalComparatorJavaImpl());
    }
  }

  public void testLexicographicalComparator() {
    List<byte[]> ordered =
        Arrays.asList(
            new byte[] {},
            new byte[] {LEAST},

    ba3 = Arrays.copyOf(ba1, ba1.length);
    ba4 = Arrays.copyOf(ba1, ba1.length);
    ba3[ba1.length - 1] = (byte) 43;
    ba4[ba1.length - 1] = (byte) 42;

    javaImpl = UnsignedBytes.lexicographicalComparatorJavaImpl();
    unsafeImpl = UnsignedBytes.LexicographicalComparatorHolder.UnsafeComparator.INSTANCE;
  }

  @Benchmark
  void longEqualJava(int reps) {
    for (int i = 0; i < reps; ++i) {