0x75, 0x30, 0x32, 0x30, 0x61, 0x63, 0x63, 0xc2, 0xa2, 0x64, 0x65, 0xc9, 0x8b, 0x36, 0x32);
    // Not a valid string
    assertNotWellFormed(-1, 0, -1, 0);
  }

  public void testShardsHaveExpectedRoundTrippables() {
    // A sanity check.
    long actual = 0;
    for (long expected : generateFourByteShardsExpectedRunnables()) {
      actual += expected;
    }