void setUp() {
        smb = new TestServerMessageBlock();
    }

    @Test
    void testInt2ReadWrite() {
        byte[] buffer = new byte[2];
        ServerMessageBlock.writeInt2(0x1234, buffer, 0);
        assertEquals(0x1234, ServerMessageBlock.readInt2(buffer, 0));
    }

    @Test
    void testInt4ReadWrite() {
        byte[] buffer = new byte[4];
        ServerMessageBlock.writeInt4(0x12345678, buffer, 0);

    }

    /**
     * Validates writeParametersWireFormat encodes values in the correct order and endianness.
     */
    @Test
    void testWriteParametersWireFormat() {
        // Given
        int sid = 0x1234;
        int resumeKey = 0x89ABCDEF; // LE expected: EF CD AB 89
        String name = "file.txt";
        Trans2FindNext2 next = new Trans2FindNext2(sid, resumeKey, name);

        // Arrange
        byte[] buffer = new byte[10];
        int bufferIndex = 0;
        int len = 6;

        // Set up buffer with test data
        // available = 0x1234 (4660 in decimal)
        SMBUtil.writeInt2(0x1234, buffer, bufferIndex);
        // next 2 bytes (ignored in implementation)
        SMBUtil.writeInt2(0xABCD, buffer, bufferIndex + 2);
        // status = STATUS_CONNECTION_OK (3)

        packet.questionName = mockQuestionName;
        packet.recordName = mockRecordName;
    }

    @Test
    void testWriteInt2() {
        byte[] dst = new byte[2];
        NameServicePacket.writeInt2(0x1234, dst, 0);
        assertEquals((byte) 0x12, dst[0]);
        assertEquals((byte) 0x34, dst[1]);
    }

    @Test
    void testWriteInt4() {
        byte[] dst = new byte[4];

    }

    @Test
    void constructor_shouldThrowSmbExceptionOnRpcError() throws IOException {
        // Arrange
        String server = "testServer";
        int access = 123;
        int errorCode = 12345;

        doAnswer(invocation -> {
            MsrpcLsarOpenPolicy2 rpc = invocation.getArgument(0);
            rpc.retval = errorCode; // Simulate RPC error
            return null;

        assertArrayEquals(payload1, message.getRawPayload(), "getRawPayload should return the set payload");

        // Set another payload and verify
        byte[] payload2 = new byte[] { 1, 2, 3, 4, 5 };
        message.setRawPayload(payload2);
        assertArrayEquals(payload2, message.getRawPayload(), "getRawPayload should return the updated payload");

        // Set null payload and verify

    }

    @Test
    @DisplayName("Test createCancel method returns SmbComNtCancel")
    void testCreateCancel() {
        // Set a MID for the transaction
        transaction.setMid(12345);

        // Create cancel request
        CommonServerMessageBlockRequest cancelRequest = transaction.createCancel();

        // Verify it returns an SmbComNtCancel instance
        assertNotNull(cancelRequest);

        assertTrue(message.contains(description));
    }

    @Test
    @DisplayName("getErrorString for unknown error class")
    void testUnknownErrorClass() {
        int unknownClass = 1234;
        String expected = "unknown error class: 1234";
        assertEquals(expected, NbtException.getErrorString(unknownClass, 0));
    }

    @Test
    @DisplayName("Constructor sets fields and message correctly")
    void testConstructor() {

    }

    @Test
    void testConstructor() {
        assertNotNull(response);
        // Verify that the outputBuffer is stored properly
        byte[] testData = new byte[] { 1, 2, 3, 4, 5 };
        TransCallNamedPipeResponse testResponse = new TransCallNamedPipeResponse(mockConfig, testData);
        assertNotNull(testResponse);
    }

    @Test
    void testWriteSetupWireFormat() {

                org.junit.jupiter.params.provider.Arguments.of(0xFFFF, 0x12345678),
                org.junit.jupiter.params.provider.Arguments.of(-1, -123456));
    }

    @ParameterizedTest
    @MethodSource("validInputs")
    void writeParametersWireFormat_writesCorrectly(int fid, int securityInformation) {