}
    }

    public void test_specialCharactersInMessage() {
        // Test with special characters in message
        String message = "LDAP error: \"Invalid <config>\" & 'bad chars' @ #$%^&*()";
        LdapConfigurationException exception = new LdapConfigurationException(message);

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

    public void test_unicodeCharactersInMessage() {

    }

    public void test_specialCharactersInMessage() {
        // Test with special characters in message
        String specialMessage = "Error: \n\t\r Special chars: 日本語 中文 한국어 émojis 😀 🎉";
        ScheduledJobException exception = new ScheduledJobException(specialMessage);

        assertEquals(specialMessage, exception.getMessage());
    }

      HashFunction hashFunction, Random random) {
    int size = random.nextInt(8) + 1;
    char[] chars = new char[size];
    for (int i = 0; i < chars.length; i++) {
      chars[i] = random.nextBoolean() ? randomLowSurrogate(random) : randomHighSurrogate(random);
    }
    String string = new String(chars);
    assertEquals(
        hashFunction.hashUnencodedChars(string),

 *
 * <ul>
 *   <li>{@link Booleans}
 *   <li>{@link Bytes}
 *       <ul>
 *         <li>{@link SignedBytes}
 *         <li>{@link UnsignedBytes}
 *       </ul>
 *   <li>{@link Chars}
 *   <li>{@link Doubles}
 *   <li>{@link Floats}
 *   <li>{@link Ints}
 *       <ul>
 *         <li>{@link UnsignedInts}
 *       </ul>
 *   <li>{@link Longs}
 *       <ul>
 *         <li>{@link UnsignedLongs}

        String errorCode = "error_code:" + Long.toHexString(timestamp);

        assertTrue(errorCode.startsWith("error_code:"));
        assertTrue(errorCode.length() > 11); // "error_code:" is 11 chars
    }

    // Test with different exception types
    public void test_exceptionTypes() {
        // Test RuntimeException
        RuntimeException runtimeEx = new RuntimeException("Runtime error");

      verifyHostname(hostname, it)
    }
  }

  /**
   * This is like [toLowerCase] except that it does nothing if this contains any non-ASCII
   * characters. We want to avoid lower casing special chars like U+212A (Kelvin symbol) because
   * they can return ASCII characters that match real hostnames.
   */
  private fun String.asciiToLowercase(): String =
    when {

    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);
        } else {
          assertUnescaped(xmlEscaper, ch);

    }

    public void test_constructor_withSpecialCharactersInMessage() {
        // Test constructor with special characters in message
        String message = "Error with special chars: \n\t\r\"'<>&";
        SearchEngineClientException exception = new SearchEngineClientException(message);

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

        // Test various complex field names
        String[] fieldNames = { "simple_field", "field-with-dashes", "field.with.dots", "field_with_underscores", "fieldWithCamelCase",
                "field with spaces", "field@with#special!chars", "フィールド名", "字段名称", "필드명" };

        for (String fieldName : fieldNames) {
            String encoded = BaseEncoding.base64().encode(fieldName.getBytes(StandardCharsets.UTF_8));

            // Expected exception
            assertNotNull(e);
        }
    }

    // Test special characters in property values
    public void test_get_specialCharacters() {
        String testKey = "special.chars";
        String specialValue = "!@#$%^&*()_+-=[]{}|;':\",./<>?";
        System.setProperty(Constants.FESS_CONFIG_PREFIX + testKey, specialValue);

        try {
            String value = fessConfig.get(testKey);