// but PrintStream doesn't throw exceptions on write after close
    }

    @Test
    void testConcurrentAccess() throws InterruptedException {
        // Test thread safety of getInstance
        LogStream.setInstance(testStream);

        final LogStream[] instances = new LogStream[10];
        Thread[] threads = new Thread[10];

        for (int i = 0; i < threads.length; i++) {

            assertEquals(4, written);
            assertEquals(4, SMBUtil.readInt2(largeBuffer, 5000));
        }

        @Test
        @DisplayName("Should maintain thread safety")
        void testThreadSafety() throws InterruptedException {
            int threadCount = 10;
            Thread[] threads = new Thread[threadCount];
            boolean[] success = new boolean[threadCount];

        assertEquals(0, stats.consecutiveFailures);
        assertEquals(SimpleCircuitBreaker.State.CLOSED, circuitBreaker.getState());
    }

    @RepeatedTest(10)
    @DisplayName("Test thread safety")
    void testThreadSafety() throws InterruptedException {
        SimpleCircuitBreaker breaker = new SimpleCircuitBreaker("concurrent", 5, 3, 100);
        AtomicInteger successCount = new AtomicInteger(0);

- **Authentication**: NTLM, Kerberos, SPNEGO unified subsystem
- **SLF4J Logging**: Comprehensive logging throughout the codebase
- **Resource Management**: AutoCloseable patterns for file handles and connections
- **Thread Safety**: Components support concurrent access
- **DFS Support**: Distributed File System resolution
- **Streaming Operations**: Efficient directory listings and file operations
- **Buffer Caching**: Optimized buffer management

        byte[] fileNameBytes = fileName.getBytes(StandardCharsets.UTF_16LE);
        int totalSize = 12 + fileNameBytes.length + 50; // Extra space for safety
        byte[] buffer = new byte[totalSize];

        // Write next entry offset (4 bytes)
        SMBUtil.writeInt4(nextOffset, buffer, 0);

        // Write action (4 bytes)

            assertTrue(RequestWithFileId.class.isAssignableFrom(impl), impl.getSimpleName() + " should implement RequestWithFileId");
        }
    }

    @Test
    @DisplayName("Should test thread safety of setFileId")
    void testThreadSafety() throws InterruptedException {
        // Given
        RequestWithFileId request = new Smb2CloseRequest(mockConfig, emptyFileId);
        int threadCount = 10;

            BufferCache.releaseBuffer(correctBuffer); // Should accept correct size
        });
    }

    /**
     * Test concurrent buffer allocation and release for thread safety.
     */
    @Test
    public void testConcurrentBufferOperations() throws Exception {
        // Given
        int threadCount = 10;
        int opsPerThread = 100;

        }
    }

    /**
     * Sanitizes a string for safe logging (removes control characters)
     *
     * @param input the string to sanitize
     * @return sanitized string safe for logging
     */
    public static String sanitizeForLogging(String input) {
        if (input == null) {
            return "null";
        }

            auth4.close();
        } finally {
            auth1.close();
            auth2.close();
        }
    }

    /**
     * Test concurrent password comparisons to ensure thread safety and consistent timing.
     */
    @Test
    public void testConcurrentTimingConsistency() throws Exception {
        final char[] password = "concurrenttestpassword".toCharArray();

and control, on terms that prohibit them from making any copies of
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  Conveying under any other circumstances is permitted solely under
the conditions stated below.  Sublicensing is not allowed; section 10
makes it unnecessary.

  3. Protecting Users' Legal Rights From Anti-Circumvention Law.