assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("")), "");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("bc")), "bdc");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("a")), "abdc");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("acdb")), "abdc");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("db")), "db");
  }

  @Test

    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("")), "");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("bc")), "bdc");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("a")), "abdc");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("acdb")), "abdc");
    assertEqualCharNodes(traverser.depthFirstPreOrder(charactersOf("db")), "db");
  }

  @Test

    }

    /**
     * Adds a bad word to the suggest index.
     *
     * @param badWord The bad word to add.
     * @param apply   true to apply the changes immediately.
     */
    public void addBadWord(final String badWord, final boolean apply) {
        suggester.indexer().addBadWord(badWord, apply);
        refresh();
    }

    /**
     * Deletes a bad word from the suggest index.
     *

    /** Helper for managing search suggestions and bad words */
    @Resource
    protected SuggestHelper suggestHelper;

    /**
     * Retrieves bad word settings with pagination support.
     *
     * @param body the search body containing pagination and filter parameters
     * @return JSON response containing list of bad word configurations
     */
    // GET /api/admin/badword/settings

  public void testFromStringBadDefaultPort() {
    // Well-formed strings with bad default ports.
    checkFromStringCase("gmail.com:81", -1, "gmail.com", 81, true);
    checkFromStringCase("192.0.2.2:83", -1, "192.0.2.2", 83, true);
    checkFromStringCase("[2001::2]:85", -1, "2001::2", 85, true);
    checkFromStringCase("goo.gl:65535", 65536, "goo.gl", 65535, true);
    // No port, bad default.
    checkFromStringCase("google.com", -1, "google.com", -1, false);

    /** The object path is invalid */
    int NT_STATUS_OBJECT_PATH_INVALID = 0xC0000039;
    /** The object path was not found */
    int NT_STATUS_OBJECT_PATH_NOT_FOUND = 0xC000003a;
    /** The object path syntax is bad */
    int NT_STATUS_OBJECT_PATH_SYNTAX_BAD = 0xC000003b;
    /** The process cannot access the file because it is being used by another process */
    int NT_STATUS_SHARING_VIOLATION = 0xC0000043;

            }
            break;
        default:
            break;
        }
        return OptionalEntity.empty();
    }

    /**
     * Get the bad word.
     * @param form The create form.
     * @return The bad word.
     */
    public static OptionalEntity<BadWord> getBadWord(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();

labels.bad_word_link_upload=Upload
labels.bad_word_button_download=Download
labels.bad_word_button_upload=Upload
labels.bad_word_list_suggest_word=Bad Word
labels.bad_word_suggest_word=Bad Word
labels.bad_word_file=Bad Word File
labels.user_configuration=User
labels.user_list_name=Name
labels.user_password=Password
labels.user_confirm_password=Password (Confirm)
labels.user_title_details=User

        // Arrange
        stubAcquireReturnsSelf();
        when(nameFilter.accept(parent, "bad")).thenThrow(new CIFSException("bad name"));
        when(nameFilter.accept(parent, "good")).thenReturn(true);

        FileEntry initial = entry("first");
        FileEntry[] page1 = new FileEntry[] { entry("bad"), entry("good") };

    class BadRunnableException extends RuntimeException {}

    Runnable bad =
        new Runnable() {
          @Override
          public void run() {
            throw new BadRunnableException();
          }
        };

    future.set(1);
    future.addListener(bad, directExecutor()); // BadRunnableException must not propagate.
  }