buf[bodyStart + 2] = 0x02; // errorContextCount
        buf[bodyStart + 3] = 0x00; // reserved
        int bc = 4;
        SMBUtil.writeInt4(bc, buf, bodyStart + 4);
        byte[] err = new byte[] { 0x55, 0x66, 0x77, 0x01 };
        System.arraycopy(err, 0, buf, bodyStart + 8, bc);

        int decoded = resp.decode(buf, headerStart);
        assertTrue(decoded > 0);

        // When error path is taken, no blob should be parsed

        smb.mid = 123;
        smb.pid = 456;
        smb.tid = 789;
        smb.uid = 101;
        smb.flags2 = ServerMessageBlock.FLAGS2_UNICODE;
        smb.useUnicode = true;

        byte[] params = { 0x01, 0x02, 0x03, 0x04 };
        byte[] bytes = { 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
        smb.setParamWords(params);
        smb.setBytes(bytes);

        byte[] buffer = new byte[1024];

0.000 callStart
0.010 dnsStart
0.017 dnsEnd
0.025 connectStart
0.117 secureConnectStart
0.586 secureConnectEnd
0.586 connectEnd
0.587 connectionAcquired
0.588 requestHeadersStart
0.590 requestHeadersEnd
0.591 responseHeadersStart
0.675 responseHeadersEnd
0.676 responseBodyStart
0.679 responseBodyEnd
0.679 connectionReleased
0.680 callEnd
REQUEST 2 (pooled connection)
0.000 callStart
0.001 connectionAcquired

        assertTrue(result.contains("filename=\\test\\path\\"));
    }

    @Test
    @DisplayName("Test constants values")
    void testConstants() {
        // Test flag constants
        assertEquals(0x01, Trans2FindFirst2.FLAGS_CLOSE_AFTER_THIS_REQUEST);
        assertEquals(0x02, Trans2FindFirst2.FLAGS_CLOSE_IF_END_REACHED);
        assertEquals(0x04, Trans2FindFirst2.FLAGS_RETURN_RESUME_KEYS);

    assertByteArrayEquals(
        new byte[] {0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19},
        Longs.toByteArray(0x1213141516171819L));
    assertByteArrayEquals(
        new byte[] {
          (byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC,
          (byte) 0xBB, (byte) 0xAA, (byte) 0x99, (byte) 0x88
        },
        Longs.toByteArray(0xFFEEDDCCBBAA9988L));
  }

    void testHaveCapability() throws Exception {
        // Given
        setPrivateField(response, "commonCapabilities", 0x2F); // 0010 1111

        // Then
        assertTrue(response.haveCapabilitiy(0x01)); // Has this bit
        assertTrue(response.haveCapabilitiy(0x0F)); // Has all these bits
        assertFalse(response.haveCapabilitiy(0x10)); // Doesn't have this bit

        // Skip header (already read by parent class)
        bais.skip(4);
        readPacket.type = buffer[0] & 0xFF;
        readPacket.length = ((buffer[1] & 0x01) << 16) + ((buffer[2] & 0xFF) << 8) + (buffer[3] & 0xFF);

        byte[] readBuffer = new byte[readPacket.length];
        bais.read(readBuffer, 0, readPacket.length);

    @Mock
    private CommonServerMessageBlock message;

    private byte[] testData;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        testData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
    }

    @Test
    @DisplayName("Test sign method with valid parameters")
    void testSignWithValidParameters() {
        // Arrange
        int offset = 0;

        assertNotNull(hmac);
    }

    @Test
    void testEngineUpdateByte() {
        // Test engineUpdate(byte b)
        HMACT64 hmac = new HMACT64(TEST_KEY);
        hmac.engineUpdate((byte) 0x01);
        // No exception means success
    }

    @Test
    void testEngineUpdateByteArray() {
        // Test engineUpdate(byte[] input, int offset, int len)
        HMACT64 hmac = new HMACT64(TEST_KEY);

            lock = new Smb2Lock(100L, 200L, sharedWithFailImmediately);
            lock.encode(buffer, 0);

            assertEquals(0x11, SMBUtil.readInt4(buffer, 16));
        }
    }

    @Nested
    @DisplayName("Edge Cases and Boundary Tests")
    class EdgeCaseTests {

        @Test