// Verify structure size (32)
        assertEquals(32, SMBUtil.readInt2(buffer, offset));

        // Verify notify flags
        assertEquals(Smb2ChangeNotifyRequest.SMB2_WATCH_TREE, SMBUtil.readInt2(buffer, offset + 2));

        // Verify output buffer length
        assertEquals(8192, SMBUtil.readInt4(buffer, offset + 4));

        // Verify file ID
        byte[] readFileId = new byte[16];

            int totalBytes = copy.encode(buffer, 0);

            // Then
            assertEquals(HEADER_SIZE + 20 + 24 + 22, totalBytes);
            verify(mockChunk1).encode(buffer, HEADER_SIZE);
            verify(mockChunk2).encode(buffer, HEADER_SIZE + 20);
            verify(mockChunk3).encode(buffer, HEADER_SIZE + 20 + 24);
        }
    }

        verify(transport, times(1)).acquire();
    }

    @Test
    @DisplayName("close/release manage usage and transport lifecycle")
    void testReleaseLifecycle() {
        SmbSessionImpl session = newSession();

        // First release drops usage to zero and releases transport
        session.release();
        verify(transport, times(1)).release();

            inOrder.verify(mockCtx).isPreferredMech(any());
            inOrder.verify(mockCtx).getFlags();
            inOrder.verify(mockCtx).getSupportedMechs();
            inOrder.verify(mockCtx).supportsIntegrity();
            inOrder.verify(mockCtx).calculateMIC(any(byte[].class));
            inOrder.verify(mockCtx).verifyMIC(any(byte[].class), any(byte[].class));
            inOrder.verify(mockCtx).isMICAvailable();

        // execute
        ToolchainPrivate[] toolchains = toolchainManager.getToolchainsForType("basic", session);

        // verify
        verify(logger, never()).error(anyString());
        assertEquals(1, toolchains.length);
    }

    @Test
    void testToolchainsForUnknownType() throws Exception {
        // prepare

        assertEquals(mockNotifyInfo2, notifications.get(1));

        // Verify first notification
        FileNotifyInformation info1 = notifications.get(0);
        assertEquals(FileNotifyInformation.FILE_ACTION_ADDED, info1.getAction());
        assertEquals("test1.txt", info1.getFileName());

        // Verify second notification
        FileNotifyInformation info2 = notifications.get(1);

        ServletRuntimeException runtimeException = new ServletRuntimeException(servletException);

        // Verify that the cause is correctly set
        assertNotNull(runtimeException);
        assertEquals(servletException, runtimeException.getCause());

        // Verify that the message is preserved from the cause
        assertTrue(runtimeException.getMessage().contains(ServletException.class.getName()));

        byte[] rawKey = keyManager.getRawKey(sessionId);
        assertNotNull(rawKey, "Should retrieve raw key");
        assertArrayEquals(testKey, rawKey, "Raw key should match");

        // Verify we get a copy, not the original
        rawKey[0] = (byte) ~rawKey[0];
        byte[] rawKey2 = keyManager.getRawKey(sessionId);
        assertArrayEquals(testKey, rawKey2, "Should still match original");
    }

    @Test

        // Unwrap then close both
        CustomSmbTree unwrapped = smbTree.unwrap(CustomSmbTree.class);
        smbTree.close();
        unwrapped.close();

        verify(smbTree).unwrap(CustomSmbTree.class);
        verify(smbTree).close();
        verify(customTree).close();
    }

    /**
     * Custom SmbTree interface for testing unwrap functionality.
     */
    interface CustomSmbTree extends SmbTree {

        // Verify bytes written
        assertEquals(24, written);

        // Verify structure size (should be 24)
        assertEquals(24, SMBUtil.readInt2(buffer, offset));

        // Verify Reserved1 (2 bytes at offset+2, should be 0)
        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

        // Verify Reserved2 (4 bytes at offset+4, should be 0)