long negativeLength = -100L;
            int negativeFlags = -1;

            lock = new Smb2Lock(negativeOffset, negativeLength, negativeFlags);
            lock.encode(buffer, 0);

            // Negative values should be encoded as unsigned
            assertEquals(negativeOffset, SMBUtil.readInt8(buffer, 0));
            assertEquals(negativeLength, SMBUtil.readInt8(buffer, 8));

        void testEncodeNegativeValues() {
            // Given
            long negativeOffset = -1L;
            int negativeLength = -1;
            SrvCopychunk chunk = new SrvCopychunk(negativeOffset, negativeOffset, negativeLength);

            // When
            int bytesWritten = chunk.encode(buffer, startIndex);

            // Then

            when(mock.getName()).thenReturn(null);
            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());
        }
    }