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),

    }

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

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

    @Test

            + "1234567890";
    assertThat(xmlEscaper.escape(s)).isEqualTo(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);

        .isEqualTo(1);
    assertThat(
            Chars.indexOf(
                new char[] {(char) 2, (char) 3, (char) 2, (char) 3, (char) 4, (char) 2, (char) 3},
                new char[] {(char) 2, (char) 3, (char) 4}))
        .isEqualTo(2);
    assertThat(
            Chars.indexOf(
                new char[] {(char) 2, (char) 2, (char) 3, (char) 4, (char) 2, (char) 3, (char) 4},

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: ******@****.***

        .isEqualTo(1);
    assertThat(
            Chars.indexOf(
                new char[] {(char) 2, (char) 3, (char) 2, (char) 3, (char) 4, (char) 2, (char) 3},
                new char[] {(char) 2, (char) 3, (char) 4}))
        .isEqualTo(2);
    assertThat(
            Chars.indexOf(
                new char[] {(char) 2, (char) 2, (char) 3, (char) 4, (char) 2, (char) 3, (char) 4},

      while (i + 4 <= utf16Length) {
        char c0 = input.charAt(i);
        char c1 = input.charAt(i + 1);
        char c2 = input.charAt(i + 2);
        char c3 = input.charAt(i + 3);
        if (c0 < 0x80 && c1 < 0x80 && c2 < 0x80 && c3 < 0x80) {
          int k1 = c0 | (c1 << 8) | (c2 << 16) | (c3 << 24);
          k1 = mixK1(k1);
          h1 = mixH1(h1, k1);
          i += 4;

      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 {
      isAscii() -> lowercase(Locale.US)

        assertNull(result);
    }

    @Test
    public void test_smartSummary_exactlyAtBudget() {
        // omitMarker = "\n...[omitted]...\n" (18 chars), suffix="" (no sources), bodyBudget = 500 - 0 - 18 = 482
        // Content of 482 chars is <= bodyBudget, so returned with suffix (empty) appended as-is
        final String content = "X".repeat(482);
        final ChatMessage msg = ChatMessage.assistantMessage(content);

        // 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));