// idFileSystem (4 bytes, skipped)
        writeInt4(100, buffer, 4); // sectPerAlloc
        writeInt4(1000, buffer, 8); // alloc
        writeInt4(500, buffer, 12); // free
        writeInt2(512, buffer, 16); // bytesPerSect

        int bytesRead = response.readDataWireFormat(buffer, 0, buffer.length);

        assertEquals(20, bytesRead, "Should read 20 bytes");

        @DisplayName("calculatePreauthHash computes SHA-512 chain for SMB 3.1.1")
        void preauthHash_happyPath() throws Exception {
            setField(transport, "smb2", true);
            Smb2NegotiateResponse nego = new Smb2NegotiateResponse(cfg);
            setField(nego, "selectedDialect", DialectVersion.SMB311);
            setField(nego, "selectedPreauthHash", 1); // 1 => SHA-512
            setField(transport, "negotiated", nego);

            assertEquals(16, bytesRead); // Structure size + reserved (4) + count (4) + remaining (4) + channel info (4)
            assertEquals(1024, response.getCount());
            assertEquals(512, response.getRemaining());
        }

        @Test
        @DisplayName("Should throw exception for invalid structure size")
        void testInvalidStructureSize() {
            byte[] buffer = new byte[64];

  }

  private enum Algorithm {
    MD5("MD5", Hashing.md5()),
    SHA_1("SHA-1", Hashing.sha1()),
    SHA_256("SHA-256", Hashing.sha256()),
    SHA_384("SHA-384", Hashing.sha384()),
    SHA_512("SHA-512", Hashing.sha512());

    private final String algorithmName;
    private final HashFunction hashFn;

    Algorithm(String algorithmName, HashFunction hashFn) {
      this.algorithmName = algorithmName;

  }

  private enum Algorithm {
    MD5("MD5", Hashing.md5()),
    SHA_1("SHA-1", Hashing.sha1()),
    SHA_256("SHA-256", Hashing.sha256()),
    SHA_384("SHA-384", Hashing.sha384()),
    SHA_512("SHA-512", Hashing.sha512());

    private final String algorithmName;
    private final HashFunction hashFn;

    Algorithm(String algorithmName, HashFunction hashFn) {
      this.algorithmName = algorithmName;

        @DisplayName("Should set minimum count correctly")
        void testSetMinimumCount() {
            assertDoesNotThrow(() -> request.setMinimumCount(0));
            assertDoesNotThrow(() -> request.setMinimumCount(512));
            assertDoesNotThrow(() -> request.setMinimumCount(Integer.MAX_VALUE));
        }

        @Test
        @DisplayName("Should set remaining bytes correctly")
        void testSetRemainingBytes() {

  }

  /** Returns a hash function implementing the SHA-512 algorithm (512 hash bits). */
  public static HashFunction sha512() {
    return Sha512Holder.SHA_512;
  }

  private static final class Sha512Holder {
    static final HashFunction SHA_512 =
        new MessageDigestHashFunction("SHA-512", "Hashing.sha512()");
  }

  /**

    @DisplayName("Should test writeBytesWireFormat directly")
    void testWriteBytesWireFormatDirect() {
        // Given
        byte[] buffer = new byte[512];
        int offset = 100;

        // First encode to set headerStart
        byte[] tempBuffer = new byte[512];
        request.encode(tempBuffer, 50);

        // When
        int bytesWritten = request.writeBytesWireFormat(buffer, offset);

        // Then

    void testReadBytesWireFormatValidStructureSize() throws Exception {
        response = new Smb2QueryDirectoryResponse(mockConfig, Smb2QueryDirectoryRequest.FILE_BOTH_DIRECTORY_INFO);

        byte[] buffer = new byte[512];
        int bufferIndex = 0;

        // Set structure size to 9 (valid)
        SMBUtil.writeInt2(9, buffer, bufferIndex);
        // Set buffer offset (relative to header start)

    }

    @Test
    @DisplayName("Should create response with configuration and output buffer")
    void testConstructor() {
        // Given
        byte[] buffer = new byte[512];
        int offset = 10;

        // When
        Smb2ReadResponse resp = new Smb2ReadResponse(mockConfig, buffer, offset);

        // Then
        assertNotNull(resp);