assertNextPermutation(newArrayList("a", "c", "b"), permutations);
    assertNextPermutation(newArrayList("b", "a", "c"), permutations);
    assertNextPermutation(newArrayList("b", "c", "a"), permutations);
    assertNextPermutation(newArrayList("c", "a", "b"), permutations);
    assertNextPermutation(newArrayList("c", "b", "a"), permutations);
    assertNoMorePermutations(permutations);
  }

  }

  /** Tests that round tripping of all three byte permutations work. */
  @GwtIncompatible // java.nio.charset.Charset

  public void testIsWellFormed_3Bytes() {
    testBytes(3, EXPECTED_THREE_BYTE_ROUNDTRIPPABLE_COUNT);
  }

  /**
   * Tests that round tripping of a sample of four byte permutations work. All permutations are

        final int count = length / 8;

        for (int i = 0; i < count; i++) {
            encrypt(cipherText, i * 8, clearText, i * 8);
        }

        return clearText;
    }

    // Tables, permutations, S-boxes, etc.

    private static byte[] bytebit =
            { (byte) 0x80, (byte) 0x40, (byte) 0x20, (byte) 0x10, (byte) 0x08, (byte) 0x04, (byte) 0x02, (byte) 0x01 };

    }
  }

  public void testRemoveAt_exhaustive() {
    int size = reduceExponentIfGwt(8);
    List<Integer> expected = createOrderedList(size);
    for (Collection<Integer> perm : Collections2.permutations(expected)) {
      for (int i = 0; i < perm.size(); i++) {
        MinMaxPriorityQueue<Integer> q = MinMaxPriorityQueue.create(perm);
        q.removeAt(i);
        assertIntactUsingStartedWith(perm, q);
      }