// Subsequent get should still work
        assertEquals(4, impl.getBuffer().length);
    }

    // Capacity behavior: when full, additional releases are dropped; only cached buffers are returned
    @Test
    @DisplayName("Cache capacity respected: extra releases dropped; retrieval order by first free slot")
    void cacheCapacityAndRetrievalOrder() {
        BufferCacheImpl impl = new BufferCacheImpl(2, 3);

        if (usage == 0) {
            synchronized (this) {
                log.debug("Usage dropped to zero, release session");
                if (this.sessionAcquired.compareAndSet(true, false)) {
                    this.session.release();
                }
            }
        } else if (usage < 0) {
            log.error("Usage count dropped below zero " + this);
            dumpResource();

                    }
                }
            }
        } else if (usage < 0) {
            log.error("Usage count dropped below zero " + this);
            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    /**
     * Close the tree connection (implements AutoCloseable)
     *

        final long us = this.usageCount.decrementAndGet();
        if (us == 0) {
            this.treeConnection.release();
        } else if (us < 0) {
            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            // Add null check to prevent NPE if object was not fully constructed

                            session.release();
                        }
                    }
                } catch (Exception e) {
                    if (!e.getMessage().contains("Usage count dropped below zero")) {
                        exceptions.add(e);
                    }
                } finally {
                    endLatch.countDown();
                }
            });
        }

        RuntimeException ex = assertThrows(RuntimeException.class, trace::release);
        assertTrue(ex.getMessage() != null && ex.getMessage().contains("Usage count dropped below zero"));
    }

    @Test
    @DisplayName("getTreeId(): no tree returns -1")
    void getTreeId_noTree_returnsMinusOne() {
        // Arrange
        CIFSContext ctx = mock(CIFSContext.class);

        }

        if (usage == 0) {
            if (log.isTraceEnabled()) {
                log.trace("Transport usage dropped to zero " + this);
            }
        } else if (usage < 0) {
            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    /**
     * {@inheritDoc}
     *
     * @see java.lang.Object#finalize()
     */
    @Override

            // Act: type USER, decrement true
            SID sid = new SID(st, jcifs.SID.SID_TYPE_USER, "DOM", "alice", true);

            // Assert: last element dropped
            assertEquals("S-1-5-10-20", sid.toString());
            assertEquals("DOM", sid.getDomainName());
            assertEquals("alice", sid.getAccountName());
        }

        @Test

        if (log.isTraceEnabled()) {
            log.trace("Release session " + usage + " " + this);
        }

        if (usage == 0) {
            if (log.isDebugEnabled()) {
                log.debug("Usage dropped to zero, release connection " + this.transport);
            }
            // Ensure atomic cleanup of all resources
            synchronized (this) {
                // Double-check usage count within synchronized block

     */
    public UnicodeString(final boolean zterm) {
        this.zterm = zterm;
    }

    /**
     * Constructs a UnicodeString by wrapping an existing unicode_string.
     *
     * @param rus wrapped string
     * @param zterm whether the string should be zero terminated
     */
    public UnicodeString(final rpc.unicode_string rus, final boolean zterm) {
        this.length = rus.length;