*/
  public void testExhaustive() {
    List<Hasher> hashers =
        ImmutableList.of(
            new StreamingVersion().newHasher(),
            new StreamingVersion().newHasher(52),
            new NonStreamingVersion().newHasher(),
            new NonStreamingVersion().newHasher(123));
    Random random = new Random(0);
    for (int i = 0; i < 200; i++) {