SmbComNtCancel cancelRequest = mock(SmbComNtCancel.class);

        digest.sign(data, 0, data.length, cancelRequest, null);

        verify(cancelRequest).setSignSeq(10);
        // Sequence should increment by 1 for cancel requests
    }

    @Test
    @DisplayName("Test sign method with null response")
    void testSignWithNullResponse() {

    }

    @Test
    @DisplayName("checkRelease(): when connected and usage>0 performs check without throwing")
    void checkRelease_connectedAndInUse_doesNotThrow() {
        // Arrange: spy isConnected() to return true; increment usage via acquire()
        CIFSContext ctx = mock(CIFSContext.class);
        SmbTreeConnectionTrace trace = Mockito.spy(new SmbTreeConnectionTrace(ctx));
        doReturn(true).when(trace).isConnected();

    /**
     * Checks if the cache has pending changes
     * @return true if cache has changes
     */
    public boolean hasChanges() {
        return hasChanges;
    }

    /**
     * Get and increment inconsistency count
     *
     * @return the current inconsistency count
     */
    public int getInconsistencyCount() {
        return inconsistencyCount.getAndIncrement();
    }

    /**

         *
         * @return true if should retry
         */
        public boolean shouldRetry() {
            return retryCount < 3;
        }

        /**
         * Increment retry count and update next retry time
         */
        public void incrementRetry() {
            retryCount++;
            // Exponential backoff: 1s, 2s, 4s

        verify(tree, times(1)).release();
    }

    @Test
    @DisplayName("release() decrements usage; closes only when count reaches zero")
    void release_decrementsAndClosesOnZero() throws CIFSException {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(8L, true, true);

        assertSame(response, out);
        verify(treeConnection).send(resourceLoc, request, response, params);
    }

    @Test
    @DisplayName("close calls release and decrements usage; double release throws")
    void closeAndReleaseBehavior() {
        // Validates usage counting and that an extra release() throws RuntimeCIFSException

     */
    protected void startCrawling() {
        synchronized (crawlerContext.activeThreadCountLock) {
            crawlerContext.activeThreadCount++;
        }
    }

    /**
     * Decrements the active thread count.
     */
    protected void finishCrawling() {
        synchronized (crawlerContext.activeThreadCountLock) {
            crawlerContext.activeThreadCount--;
        }
    }

        }

        /* The message provided to batch has a batchLimit that is
         * higher than the current batchLevel so we will now encode
         * that chained message. Before doing so we must increment
         * the batchLevel of the andx message in case it itself is an
         * andx message and needs to perform the same check as above.
         */

        andx.batchLevel = batchLevel + 1;

        assertNotNull(component1);
        assertNotNull(component2);

        // Should be same instance for singleton
        assertSame(component1, component2);
        // The first creation should increment the counter
        assertTrue("Instance count should be at least 1", SingletonTestComponent.getInstanceCount() >= 1);
    }

    /**
     * Test wrap method
     */
    public void test_wrap_basic() {

     */
    private int getFailureCount(ChangeNotificationHandle handle) {
        return failureCounts.getOrDefault(handle.getDirectoryPath(), 0);
    }

    /**
     * Increment failure count for a handle
     *
     * @param handle notification handle
     */
    private void incrementFailureCount(ChangeNotificationHandle handle) {