}

  private fun uppercase(original: RequestBody?): RequestBody =
    object : RequestBody() {
      override fun contentType(): MediaType? = original!!.contentType()

      override fun contentLength(): Long = original!!.contentLength()

      override fun writeTo(sink: BufferedSink) {
        val uppercase = uppercase(sink)
        val bufferedSink = uppercase.buffer()
        original!!.writeTo(bufferedSink)

        assertTrue(CharUtil.isUrlChar('a')); // first lowercase
        assertTrue(CharUtil.isUrlChar('z')); // last lowercase
        assertTrue(CharUtil.isUrlChar('A')); // first uppercase
        assertTrue(CharUtil.isUrlChar('Z')); // last uppercase
        assertTrue(CharUtil.isUrlChar('0')); // first digit
        assertTrue(CharUtil.isUrlChar('9')); // last digit

        // Test characters just outside ranges that are not valid

    @LazyInit private volatile @Nullable BaseEncoding upperCase;
    @LazyInit private volatile @Nullable BaseEncoding lowerCase;
    @LazyInit private volatile @Nullable BaseEncoding ignoreCase;

    @Override
    public BaseEncoding upperCase() {
      BaseEncoding result = upperCase;
      if (result == null) {
        Alphabet upper = alphabet.upperCase();

  /** A bit mask which selects the bit encoding ASCII character case. */
  private static final char CASE_MASK = 0x20;

  /**
   * Returns a copy of the input string in which all {@linkplain #isUpperCase(char) uppercase ASCII
   * characters} have been converted to lowercase. All other characters are copied without
   * modification.
   */
  public static String toLowerCase(String string) {
    int length = string.length();

import okio.Sink
import okio.buffer

/** Rewrites the request body sent to the server to be all uppercase.  */
class UppercaseRequestInterceptor : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Chain): Response = chain.proceed(uppercaseRequest(chain.request()))

  /** Returns a request that transforms `request` to be all uppercase.  */
  private fun uppercaseRequest(request: Request): Request {

            assertTrue(result.startsWith("NtlmChallenge[challenge=0x"));
            assertTrue(result.endsWith(",dc=SERVER123]"));

            // Hexdump.toHexString with size = length * 2 produces 8 uppercase hex chars
            // The hex should be "010203FF"
            assertTrue(result.contains("010203FF"));
        }

        @Test
        @DisplayName("toString with empty challenge array")

    assertFailsToDecode(base64(), "?", "Invalid input length 1");
  }

  public void testBase64CannotUpperCase() {
    assertThrows(IllegalStateException.class, () -> base64().upperCase());
  }

  public void testBase64CannotLowerCase() {
    assertThrows(IllegalStateException.class, () -> base64().lowerCase());
  }

  public void testBase64CannotIgnoreCase() {

				<c:if
					test="${fieldData.name == 'label' && fieldData.valueCountMap.size() > 0}">
					<ul class="list-group mb-2">
						<li class="list-group-item text-uppercase"><la:message
								key="labels.facet_label_title" /></li>
						<c:forEach var="countEntry" items="${fieldData.valueCountMap}">
							<c:if
								test="${countEntry.value != 0 && fe:labelexists(countEntry.key)}">

                // An error that maps via DOS mapping
                Arguments.of(0x00000002, SmbException.getMessageByCode(0x00000002)),
                // Unknown code → hex string (uppercase)
                Arguments.of(0xDEADBEEF, "0xDEADBEEF"));
    }

    @ParameterizedTest
    @MethodSource("errorCodes")
    void constructorInitialisesMessageAndStatus(int code, String expectedMsg) {

    void testCaseSensitivity() {
        // Given
        String upperCase = "SERVER";
        String lowerCase = "server";
        String mixedCase = "Server";

        // Test different cases
        when(mockNetbiosName.getName()).thenReturn(upperCase);
        assertEquals(upperCase, mockNetbiosName.getName());

        when(mockNetbiosName.getName()).thenReturn(lowerCase);