});

            HMACT64 hmac = new HMACT64(TEST_KEY);
            int bytesWritten = hmac.engineDigest(buffer, 0, expectedOutput.length);

            assertEquals(expectedOutput.length, bytesWritten);
            assertArrayEquals(expectedOutput, Arrays.copyOfRange(buffer, 0, expectedOutput.length));

            verify(mockMd5, times(1)).digest(); // First call for inner digest

      ensureRoomFor(values.length());
      System.arraycopy(values.array, values.start, array, count, values.length());
      count += values.length();
      return this;
    }

    private void ensureRoomFor(int numberToAdd) {
      int newCount = count + numberToAdd; // TODO(kevinb): check overflow now?
      if (newCount > array.length) {

      ensureRoomFor(values.length());
      System.arraycopy(values.array, values.start, array, count, values.length());
      count += values.length();
      return this;
    }

    private void ensureRoomFor(int numberToAdd) {
      int newCount = count + numberToAdd; // TODO(kevinb): check overflow now?
      if (newCount > array.length) {

                offset += name.length;
            }

            // Write data if present
            if (data != null && data.length > 0) {
                System.arraycopy(data, 0, dst, offset, data.length);
                offset += data.length;
            }

            // Pad to 8-byte boundary
            while ((offset - dstIndex) % 8 != 0) {
                dst[offset++] = 0;
            }

        final int result = copy(is, os);
        assertThat(result, is(srcBytes.length));
        assertThat(os.toByteArray(), is(srcBytes));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testReaderToWriter() throws Exception {
        final int result = copy(reader, writer);
        assertThat(result, is(srcString.length()));
        assertThat(writer.toString(), is(srcString));
    }

    /**

    // 0 - 63 bytes
    var length = source.readByte().toInt()

    if (length < 0) {
      // compressed name pointer, first two bits are 1
      // drop second byte of compression offset
      source.skip(1)
    } else {
      while (length > 0) {
        // skip each part of the domain name
        source.skip(length.toLong())
        length = source.readByte().toInt()
      }
    }
  }

            assertNull(mock.getName());
        }

        @Test
        @DisplayName("Negative length is allowed via mock")
        void negativeLength() {
            FileEntry mock = mock(FileEntry.class);
            when(mock.length()).thenReturn(-10L);
            assertEquals(-10L, mock.length());
        }
    }

    @ParameterizedTest(name = "getType returns {0}")

    private boolean processWord() {
        if ((peekct & CT_ALPHA) != 0) {
            int i = 0;
            do {
                if (i >= buf.length) {
                    final char[] nb = new char[buf.length * 2];
                    System.arraycopy(buf, 0, nb, 0, buf.length);
                    buf = nb;
                }
                buf[i++] = (char) peekc;
                peekc = read();

                throw new MaxLengthExceededException("Content length (" + contentLength + " bytes) exceeds the maximum allowed length ("
                        + maxContentLength + " bytes).");
            }
            if (contentLength == 0) {
                if (logger.isDebugEnabled()) {
                    logger.debug("The content length is 0.");
                }
                return new ExtractData(StringUtil.EMPTY);

        @Test
        @DisplayName("Should handle negative length in verify method")
        void testVerifyNegativeLength() {
            byte[] data = new byte[128];
            boolean result = digest.verify(data, 0, -1, 0, response);
            assertFalse(result, "Should return false for negative length");
        }

        @Test
        @DisplayName("Should handle offset+length exceeding buffer size in verify method")