this.totalAllocated = new AtomicLong();
        this.totalReleased = new AtomicLong();

        // Pre-allocate buffer pool
        initializeBufferPool();
    }

    /**
     * Initialize the buffer pool with pre-allocated regions
     */
    private void initializeBufferPool() {
        // Allocate send buffers
        for (int i = 0; i < initialSendBuffers; i++) {
            try {

        void shouldDecodeBufferWithTypicalValues() throws SMBProtocolDecodingException {
            // Given - prepare buffer with typical file system values
            ByteBuffer buffer = ByteBuffer.allocate(24);
            buffer.order(ByteOrder.LITTLE_ENDIAN);
            buffer.putLong(1048576L); // Total allocation units (1M)
            buffer.putLong(524288L); // Free allocation units (512K)

        netdfs.DfsInfo1 info1 = new netdfs.DfsInfo1();
        info1.entry_path = "test_path";

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        // Create buffer for encoding - initially allocate some space
        byte[] encodeBuffer = new byte[1024];
        NdrBuffer dst = new NdrBuffer(encodeBuffer, 0);
        info1.encode(dst);

        ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());

        void shouldDecodeBufferWithTypicalValues() throws SMBProtocolDecodingException {
            // Given - prepare buffer with typical file system values
            ByteBuffer buffer = ByteBuffer.allocate(32);
            buffer.order(ByteOrder.LITTLE_ENDIAN);
            buffer.putLong(1048576L); // Total allocation units (1M)
            buffer.putLong(524288L); // Caller available allocation units (512K)

          .put(Buffer.class, ByteBuffer.allocate(0))
          .put(CharBuffer.class, CharBuffer.allocate(0))
          .put(ByteBuffer.class, ByteBuffer.allocate(0))
          .put(ShortBuffer.class, ShortBuffer.allocate(0))
          .put(IntBuffer.class, IntBuffer.allocate(0))
          .put(LongBuffer.class, LongBuffer.allocate(0))
          .put(FloatBuffer.class, FloatBuffer.allocate(0))

    @Test
    @DisplayName("Test readParametersWireFormat with non-aligned nextEntryOffset throws exception")
    void testReadParametersWireFormatNonAlignedOffset() throws Exception {
        ByteBuffer buffer = ByteBuffer.allocate(100);
        buffer.order(ByteOrder.LITTLE_ENDIAN);

        // Create notification with non-aligned nextEntryOffset
        buffer.putInt(3); // Non-aligned nextEntryOffset (not divisible by 4)

        this.totalAllocated = new AtomicLong();
        this.totalReleased = new AtomicLong();
        
        // Pre-allocate buffer pool
        initializeBufferPool();
    }
    
    private void initializeBufferPool() {
        // Allocate send buffers
        for (int i = 0; i < initialSendBuffers; i++) {
            try {

     * Test that buffer cache handles allocation when cache is full.
     */
    @Test
    public void testBufferAllocationWhenCacheFull() {
        // Given - Allocate many buffers to potentially fill the cache
        List<byte[]> buffers = new ArrayList<>();

        // Allocate more buffers than cache can hold
        for (int i = 0; i < 20; i++) {
            byte[] buffer = BufferCache.getBuffer();

          .put(Buffer.class, ByteBuffer.allocate(0))
          .put(CharBuffer.class, CharBuffer.allocate(0))
          .put(ByteBuffer.class, ByteBuffer.allocate(0))
          .put(ShortBuffer.class, ShortBuffer.allocate(0))
          .put(IntBuffer.class, IntBuffer.allocate(0))
          .put(LongBuffer.class, LongBuffer.allocate(0))
          .put(FloatBuffer.class, FloatBuffer.allocate(0))

        update(b.get());
      }
    }
  }

  /** Updates the sink with the given number of bytes from the buffer. */
  @SuppressWarnings("ByteBufferBackingArray") // We created the array with ByteBuffer.allocate().
  @CanIgnoreReturnValue
  private Hasher update(ByteBuffer scratch, int bytes) {
    try {
      update(scratch.array(), 0, bytes);
    } finally {
      Java8Compatibility.clear(scratch);
    }