}
    }
    return s;
  }

  /** Escapes the given Unicode code point in UTF-8. */
  @Override
  protected char @Nullable [] escape(int cp) {
    // We should never get negative values here but if we do it will throw an
    // IndexOutOfBoundsException, so at least it will get spotted.
    if (cp < safeOctets.length && safeOctets[cp]) {
      return null;
    } else if (cp == ' ' && plusForSpace) {

        )
        if (dateCharacter == !invert) return i
      }
      return limit
    }

    /**
     * Returns the positive value if [s] is positive, or [Long.MIN_VALUE] if it is either 0 or
     * negative. If the value is positive but out of range, this returns [Long.MAX_VALUE].
     *
     * @throws NumberFormatException if [s] is not an integer of any precision.
     */
    private fun parseMaxAge(s: String): Long {

  }

  @CanIgnoreReturnValue
  static int checkNonNegative(int value) {
    checkArgument(value >= 0, "Not true that %s is non-negative.", value);
    return value;
  }

  @CanIgnoreReturnValue
  static long checkNonNegative(long value) {
    checkArgument(value >= 0, "Not true that %s is non-negative.", value);
    return value;
  }

  @CanIgnoreReturnValue
  static int checkPositive(int value) {

  }

  @CanIgnoreReturnValue
  static int checkNonNegative(int value) {
    checkArgument(value >= 0, "Not true that %s is non-negative.", value);
    return value;
  }

  @CanIgnoreReturnValue
  static long checkNonNegative(long value) {
    checkArgument(value >= 0, "Not true that %s is non-negative.", value);
    return value;
  }

  @CanIgnoreReturnValue
  static int checkPositive(int value) {

    assertThrows(
        NumberFormatException.class,
        () -> UnsignedLongs.parseUnsignedLong("0", Character.MAX_RADIX + 1));

    // The radix is used as an array index, so try a negative value.
    assertThrows(NumberFormatException.class, () -> UnsignedLongs.parseUnsignedLong("0", -1));
  }

  public void testToString() {
    String[] tests = {
      "0",
      "ffffffffffffffff",

        assertEquals(0, response.readParametersWireFormat(emptyBuffer, 0, 0));
        assertEquals(0, response.readDataWireFormat(emptyBuffer, 0, 0));
    }

    @Test
    @DisplayName("Methods should handle negative indices")
    void testMethodsWithNegativeIndices() {
        // Arrange
        byte[] buffer = new byte[100];
        int negativeIndex = -1;

        // Act & Assert

      encodings[ 0x12] = encoding // Device Control 2
      encodings[ 0x13] = encoding // Device Control 3 (oft. XOFF)
      encodings[ 0x14] = encoding // Device Control 4
      encodings[ 0x15] = encoding // Negative Acknowledgment
      encodings[ 0x16] = encoding // Synchronous idle
      encodings[ 0x17] = encoding // End of Transmission Block
      encodings[ 0x18] = encoding // Cancel
      encodings[ 0x19] = encoding // End of Medium

        int[] invalidSizes = { -1, 0, 1, 2, 3, 5, 6, 8, 16, 32, 64, 128, 256, 512, 1024 };

        for (int invalidSize : invalidSizes) {
            byte[] buffer = new byte[256];

            // Handle negative values (will wrap around in writeInt2)
            if (invalidSize >= 0) {
                SMBUtil.writeInt2(invalidSize, buffer, 0);

                // When & Then

        assertEquals(0x00, dst[13]);

        // Check security information
        assertEquals(0x12345678, SMBUtil.readInt4(dst, 14));
    }

    @Test
    @DisplayName("Test with negative FID value (should handle as unsigned)")
    void testNegativeFidValue() {
        int fid = -1; // Will be treated as 0xFFFF in unsigned 16-bit

        assertFalse(auth.isExpired());

        // Test with no expiration (TTL = 0)
        auth.setAuthenticationTTL(0);
        Thread.sleep(100);
        assertFalse(auth.isExpired());

        // Test with negative TTL (no expiration)
        auth.setAuthenticationTTL(-1);
        Thread.sleep(100);
        assertFalse(auth.isExpired());
    }

    /**
     * Test close() method
     */
    @Test