@Test
    @DisplayName("Should convert long to hex string with padding")
    void testLongToHexString() {
        // Test various long values
        assertEquals("0000000000000000", Hexdump.toHexString(0L, 16));
        assertEquals("00000000000000FF", Hexdump.toHexString(255L, 16));
        assertEquals("FFFFFFFFFFFFFFFF", Hexdump.toHexString(-1L, 16));

        // Test different sizes

    val socket =
      MockWebServerSocket(
        FakeSocket(
          localAddress =
            InetAddress.getByAddress(
              "::1",
              byteArrayOf(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1),
            ),
          localPort = 80,
        ),
      )
    val request = RecordedRequest(DEFAULT_REQUEST_LINE_HTTP_1, headers, emptyList(), 0, ByteString.EMPTY, 0, 0, socket)

      listOf(
        "Parsing: <http://example\t.\norg> against <http://example.org/foo/bar>",
        "Parsing: <http://f:0/c> against <http://example.org/foo/bar>",
        "Parsing: <http://f:00000000000000/c> against <http://example.org/foo/bar>",
        "Parsing: <http://f:\n/c> against <http://example.org/foo/bar>",
        "Parsing: <http://f:999999/c> against <http://example.org/foo/bar>",

    for (i in 0..0x3f) formattedFlags.add(formatFlags(TYPE_HEADERS, i))
    assertThat(formattedFlags).containsExactly(
      "",
      "END_STREAM",
      "00000010",
      "00000011",
      "END_HEADERS",
      "END_STREAM|END_HEADERS",
      "00000110",
      "00000111",
      "PADDED",
      "END_STREAM|PADDED",
      "00001010",
      "00001011",
      "00001100",

import (
	"database/sql/driver"
	"fmt"
	"reflect"
	"regexp"
	"strconv"
	"strings"
	"time"
	"unicode"

	"gorm.io/gorm/utils"
)

const (
	tmFmtWithMS = "2006-01-02 15:04:05.999"
	tmFmtZero   = "0000-00-00 00:00:00"
	nullStr     = "NULL"
)

func isPrintable(s string) bool {
	for _, r := range s {
		if !unicode.IsPrint(r) {
			return false
		}
	}
	return true
}

     *
     */
    private static final String HMAC_KEY = "HMAC";
    private static final byte[] MD5_CONSTANT = "signaturekey\0".getBytes(StandardCharsets.US_ASCII);
    private static final byte[] ZERO_IV = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

    /**
     * Calculates a MAC using the ARCFOUR-HMAC-MD5 algorithm.
     * This method implements the Microsoft variant of the Kerberos ARCFOUR-HMAC-MD5 checksum.
     *