}

        @ParameterizedTest
        @DisplayName("getBytes should handle various string inputs")
        @NullAndEmptySource
        @ValueSource(strings = { "Simple ASCII", "Special chars: !@#$%^&*()", "Unicode: ñöt ascii ℃", "Mixed: ASCII + 中文 + Русский",
                "Emojis: 🎉🌟💻", "Very long string with multiple words and various characters 1234567890" })
        void testGetBytesWithVariousInputs(String input) {

    return normalizeWord(word);
  }

  private static String firstCharOnlyToUpper(String word) {
    return word.isEmpty()
        ? word
        : Ascii.toUpperCase(word.charAt(0)) + Ascii.toLowerCase(word.substring(1));
  }

    // read char by char
    CharSequenceReader reader = new CharSequenceReader(charSequence);
    for (int i = 0; i < expected.length(); i++) {
      assertEquals(expected.charAt(i), reader.read());
    }
    assertFullyRead(reader);

    // read all to one array
    reader = new CharSequenceReader(charSequence);
    char[] buf = new char[expected.length()];

  static CharEscaper createSimpleCharEscaper(ImmutableMap<Character, char[]> replacementMap) {
    return new CharEscaper() {
      @Override
      protected char[] escape(char c) {
        return replacementMap.get(c);
      }
    };
  }

  // A trivial non-optimized escaper for testing.
  static UnicodeEscaper createSimpleUnicodeEscaper(ImmutableMap<Integer, char[]> replacementMap) {
    return new UnicodeEscaper() {

    }

    public void test_messageWithSpecialCharacters() {
        // Setup
        final String message = "Error: Failed to authenticate user <******@****.***> with special chars: #$%&*()!@";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);
        final Exception cause = new RuntimeException("Special cause: \n\t\r");

        }

        @Test
        @DisplayName("Should handle special characters in message")
        void testSpecialCharactersInMessage() {
            String message = "Error: \n\t\r\\ \"special\" 'chars' @#$%^&*()";
            TransportException exception = new TransportException(message);

            assertEquals(message, exception.getMessage());
            assertNotNull(exception.toString());
        }

            + "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
            + "1234567890";
    assertEquals(s, xmlEscaper.escape(s));

    // Test ASCII control characters.
    for (char ch = 0; ch < 0x20; ch++) {
      if (ch == '\t' || ch == '\n' || ch == '\r') {
        // Only these whitespace chars are permitted in XML,
        if (shouldEscapeWhitespaceChars) {
          assertEscaping(xmlEscaper, "&#x" + Integer.toHexString(ch).toUpperCase() + ";", ch);

dn: uid=fahim,ou=people,ou=swengg,dc=min,dc=io
objectClass: inetOrgPerson
cn: Fahim Ahmed
sn: Ahmed
uid: fahim
mail: ******@****.***
userPassword: {SSHA}lRNH+PHooRaruiEb+CBEA21EZLMkAmcc

# Add a user with special chars. The password = example here.
dn: uid=Пользователь,OU=people,OU=swengg,DC=min,DC=io
objectClass: inetOrgPerson
cn: Special Charsman
sn: Charsman
uid: Пользователь
mail: ******@****.***

        return getByName(hostname, false);
    }

    static boolean isDotQuadIP(final String hostname) {
        if (hostname != null && hostname.length() > 0 && Character.isDigit(hostname.charAt(0))) {
            int i, len, dots;
            char[] data;

            i = dots = 0; /* quick IP address validation */
            len = hostname.length();
            data = hostname.toCharArray();

            return filename;
        }
        final StringBuilder buf = new StringBuilder(filename.length() + 10);
        for (int i = 0; i < filename.length(); i++) {
            final char c = filename.charAt(i);
            switch (c) {
            case '?':
                buf.append("%3f");
                break;
            case '#':
                buf.append("%23");
                break;