void testCombinedSizeCalculation() {
            CreateContextRequest[] contexts = new CreateContextRequest[5];
            int[] expectedSizes = { 16, 24, 32, 40, 48 };

            for (int i = 0; i < contexts.length; i++) {
                contexts[i] = new MockCreateContextRequest("CTX" + i, expectedSizes[i]);
            }

            // Calculate total size
            int totalSize = 0;

        FileRenameInformation2 info = new FileRenameInformation2(longFileName, false);

        int expectedSize = 20 + 2 * longFileName.length();
        assertEquals(expectedSize, info.size());

        byte[] buffer = new byte[expectedSize + 100];
        int bytesWritten = info.encode(buffer, 0);

        assertEquals(expectedSize, bytesWritten);
    }

    @Test
    @DisplayName("Test decode with empty filename")

            Smb2LockRequest req = new Smb2LockRequest(mockConfig, testFileId, singleLock);

            int expectedSize = Smb2Constants.SMB2_HEADER_LENGTH + 24 + 24; // header + structure + 1 lock
            expectedSize = ((expectedSize + 7) / 8) * 8; // 8-byte alignment
            assertEquals(expectedSize, req.size());
        }

        @Test
        @DisplayName("Should calculate size correctly with multiple locks")

    void testGetSendBufferSizeStandard() {
        // Arrange
        int expectedSize = 65536;
        when(negotiationResponse.getSendBufferSize()).thenReturn(expectedSize);

        // Act
        int size = negotiationResponse.getSendBufferSize();

        // Assert
        assertEquals(expectedSize, size);
        verify(negotiationResponse).getSendBufferSize();
    }

    @Test

            buffer = new DfsReferralRequestBuffer(path, maxReferralLevel);

            assertNotNull(buffer);
            // Verify through encode since there are no getters
            int expectedSize = 4 + 2 * path.length();
            assertEquals(expectedSize, buffer.size());
        }

        @Test
        @DisplayName("Should create buffer with empty path")
        void testConstructorWithEmptyPath() {
            String path = "";

        request = new Smb2CreateRequest(mockConfig, "test.txt");

        int expectedSize = Smb2Constants.SMB2_HEADER_LENGTH + 56;
        int nameLen = 2 * "test.txt".length();
        expectedSize += ((nameLen + 7) / 8) * 8; // size8(nameLen)
        expectedSize = ((expectedSize + 7) / 8) * 8; // size8(size)

        assertEquals(expectedSize, request.size());
    }

    @Test

        @DisplayName("Should calculate size correctly with no data")
        void testSizeWithNoData() {
            request.setData(new byte[0], 0, 0);
            int expectedSize = ((Smb2Constants.SMB2_HEADER_LENGTH + 48 + 7) / 8) * 8;
            assertEquals(expectedSize, request.size());
        }

        @Test
        @DisplayName("Should calculate size correctly with data")
        void testSizeWithData() {

        }

        if (buffer.length < expectedSize) {
            failedValidations.incrementAndGet();
            bufferOverflowsPrevented.incrementAndGet();
            log.warn("Response buffer too small: {} < {}", buffer.length, expectedSize);
            throw new SmbException("Response buffer too small: " + buffer.length + " < " + expectedSize);
        }

        if (buffer.length > maxSize) {

    class SizeCalculationTests {

        @Test
        @DisplayName("Should calculate size correctly")
        void testSize() {
            int expectedSize = ((Smb2Constants.SMB2_HEADER_LENGTH + 49 + 7) / 8) * 8;
            assertEquals(expectedSize, request.size());
        }

        @Test
        @DisplayName("Should align size to 8-byte boundary")
        void testSizeAlignment() {

        int size = request.size();

        // Then
        // Size should be aligned to 8 bytes: SMB2_HEADER_LENGTH + 32
        int expectedSize = Smb2Constants.SMB2_HEADER_LENGTH + 32;
        // The size8 method aligns to 8-byte boundary
        int alignedSize = (expectedSize + 7) & ~7;
        assertEquals(alignedSize, size);
    }

    @Test
    @DisplayName("Should write correct bytes to wire format")