}

  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)

    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() {

  /** 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();

            assertArrayEquals(NODE, uuid.node, "node array should match");
        }

        @Test
        @DisplayName("Constructor with valid uppercase UUID string should parse correctly")
        void testConstructorWithString() {
            // Act
            UUID uuid = new UUID(VALID_UUID_STRING);

            // Assert

                                val performanceTestType = PerformanceTestType.valueOf(key.uppercase())
                                performanceTestType to
                                    value
                                        .map {
                                            Os.valueOf(it.uppercase(Locale.US))
                                        }.toSet()
                            }.toMap()

    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() {

        notifyChange = new NtTransNotifyChange(mockConfig, fid, completionFilter, watchTree);

        String result = notifyChange.toString();

        assertNotNull(result);
        // Hexdump uses uppercase letters
        // Note: completionFilter is displayed with 4 hex chars, not 8
        assertTrue(result.contains("fid=0xFFFF"));
        assertTrue(result.contains("filter=0xFFFF")); // Only 4 hex chars are shown

        ScriptEngine retrievedByClass = scriptEngineFactory.getScriptEngine("testscriptengine");
        assertNotNull(retrievedByClass);
        assertEquals(engine, retrievedByClass);
    }

    // Test add method with uppercase name
    public void test_add_uppercaseName() {
        TestScriptEngine engine = new TestScriptEngine();
        scriptEngineFactory.add("TESTENGINE", engine);

        // Should be accessible with lowercase

        ace.sid = new SID("S-1-5-21-1234567890-123456789-123456789-1000");

        String result = ace.toString();

        assertTrue(result.startsWith("Allow "));
        // Hexdump.toHexString produces uppercase hex
        assertTrue(result.toLowerCase().contains("0x001200a9"));
        // ACE.toString() outputs "Direct    " with 4 spaces
        assertTrue(result.contains("Direct"));

        QueryBuilder queryBuilder2 = queryCommand.convertWildcardQuery(queryContext2, wildcardQuery2, 1.0f);
        assertNotNull(queryBuilder2);

        // The term should remain uppercase
        String queryString2 = queryBuilder2.toString();
        assertTrue(queryString2.contains("TEST*") || queryString2.contains("TEST"));
    }