}
        };
    List<Object> list = Collections.singletonList(object);
    for (int i = 0; i < 10; i++) {
      Object[] array = new Object[500];
      Arrays.fill(array, list);
      list = Arrays.asList(array);
    }
    future2.set(list);

    unused = future.toString();
  }

  public void testToString_notDone() throws Exception {

如果你再次嘗試運行 `philosophers-stone`，很可能會**無法正常運作**，因為它需要的是 `harry` 版本 `1`。

```mermaid
flowchart LR
    subgraph global[全域環境]
        harry-1[<strike>harry v1</strike>]
        style harry-1 fill:#ccc,stroke-dasharray: 5 5
        harry-3[harry v3]
    end
    subgraph stone-project[專案 philosophers-stone]
        stone(philosophers-stone) -.-x|⛔️| harry-1
    end

    float[][] arrays = new float[arraysDim1][];
    // it's shared to avoid using too much memory in tests
    float[] sharedArray = new float[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Floats.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testEnsureCapacity() {

    int[][] arrays = new int[arraysDim1][];
    // it's shared to avoid using too much memory in tests
    int[] sharedArray = new int[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Ints.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testToByteArray() {

    float[][] arrays = new float[arraysDim1][];
    // it's shared to avoid using too much memory in tests
    float[] sharedArray = new float[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Floats.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testEnsureCapacity() {

        assertNotNull(encrypted1);

        // Encrypt larger message to trigger rotation
        byte[] largeMessage = new byte[150]; // Exceed 100 byte limit
        Arrays.fill(largeMessage, (byte) 'A');

        // Should trigger automatic rotation and succeed
        byte[] encrypted2 = assertDoesNotThrow(() -> context.encryptMessage(largeMessage, 2L));
        assertNotNull(encrypted2);

그리고 `philosophers-stone`을 다시 실행하려고 하면, `harry` 버전 `1`이 필요하기 때문에 **작동하지 않을** 가능성이 있습니다.

```mermaid
flowchart LR
    subgraph global[global env]
        harry-1[<strike>harry v1</strike>]
        style harry-1 fill:#ccc,stroke-dasharray: 5 5
        harry-3[harry v3]
    end
    subgraph stone-project[philosophers-stone project]
        stone(philosophers-stone) -.-x|⛔️| harry-1
    end

   *
   *  http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-12#section-5.2
   */
  @Test
  fun largeHeaderValue() {
    val value = CharArray(4096)
    Arrays.fill(value, '!')
    val headerBlock = headerEntries("cookie", String(value))
    hpackWriter!!.writeHeaders(headerBlock)
    bytesIn.writeAll(bytesOut)
    hpackReader!!.readHeaders()

   * class.
   */
  static final class AsciiDigits {
    private AsciiDigits() {}

    private static final byte[] asciiDigits;

    static {
      byte[] result = new byte[128];
      Arrays.fill(result, (byte) -1);
      for (int i = 0; i < 10; i++) {
        result['0' + i] = (byte) i;
      }
      for (int i = 0; i < 26; i++) {
        result['A' + i] = (byte) (10 + i);

   *
   * <p>If the elements contain duplicates (according to the comparator), only the first duplicate
   * in encounter order will appear in the result.
   *
   * @since 33.2.0 (available since 21.0 in guava-jre)
   */
  @IgnoreJRERequirement // Users will use this only if they're already using streams.
  public static <E> Collector<E, ?, ImmutableSortedSet<E>> toImmutableSortedSet(