* separate method to make it somewhat more likely to be unreachable.
   */
  private static void createUnreachableLatchFinalizer(CountDownLatch latch) {
    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();

   * separate method to make it somewhat more likely to be unreachable.
   */
  private static void createUnreachableLatchFinalizer(CountDownLatch latch) {
    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();

  public void testAwait_countDownLatch() {
    CountDownLatch latch = new CountDownLatch(1);
    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();
          }
        };
    unused = null; // Hint to the JIT that unused is unreachable
    GcFinalization.await(latch);

  public void testAwait_countDownLatch() {
    CountDownLatch latch = new CountDownLatch(1);
    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();
          }
        };
    unused = null; // Hint to the JIT that unused is unreachable
    GcFinalization.await(latch);

    }

    @Test
    @DisplayName("finalize() invokes checkRelease exactly once")
    void finalize_invokes_checkRelease() throws Throwable {
        // Arrange: spy to verify internal interaction with checkRelease()
        CIFSContext ctx = mock(CIFSContext.class);
        SmbTreeConnectionTrace trace = Mockito.spy(new SmbTreeConnectionTrace(ctx));

        // Act: directly invoke finalize to simulate GC finalization path

    }

    public String getFileContents(File file, String encoding) throws IOException {
        return FileUtils.fileRead(file, encoding);
    }

    protected void finalize() throws Throwable {
        maybeWarnAboutCleanUp();

        super.finalize();
    }

    public File createFile(String filename, String content, String encoding) throws IOException {
        File dir = createTempDir();

            log.trace(String.format("Release %s (%d)", this, usage));
        }
    }

    /**
     * {@inheritDoc}
     *
     * @see java.lang.Object#finalize()
     */
    @Override
    protected void finalize() throws Throwable {
        try {
            if (this.usageCount != null && this.usageCount.get() != 0 && this.open) {

    }

    @Test
    @DisplayName("finalize() logs a warning when not closed (no exception)")
    void finalize_logsWhenNotClosed() throws Throwable {
        when(cfg.isTraceResourceUsage()).thenReturn(true); // exercise backtrace branch
        stubValidTree(2L, true, true);
        SmbFileHandleImpl h = new SmbFileHandleImpl(cfg, 1, tree, "//host/share", 0, 0, 0, 0, 0L);
        // Calling finalize directly to execute the logic; should not throw

    SmbTreeConnectionTrace(final CIFSContext ctx) {
        super(ctx);
    }

    SmbTreeConnectionTrace(final SmbTreeConnection conn) {
        super(conn);
    }

    @Override
    protected void finalize() throws Throwable {
        checkRelease();
    }

            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    /**
     * {@inheritDoc}
     *
     * @see java.lang.Object#finalize()
     */
    @Override
    protected void finalize() throws Throwable {
        try {
            if (!isDisconnected() && this.usageCount.get() != 0) {
                log.warn("Transport was not properly released, performing emergency cleanup");