// Verify iterator still works after multiple removes
        assertFalse(emptyIterator.hasNext(), "Iterator should still work after multiple removes");
        assertNull(emptyIterator.next(), "Iterator should still return null after multiple removes");
    }

    @Test
    @DisplayName("EmptyIterator should maintain state after all operations")
    void testStateConsistencyAfterOperations() {

                } catch (CIFSException e) {
                    // Expected
                }
            }

            // Circuit should be OPEN after 3 failures
            assertEquals(State.OPEN, customCb.getState(), "Circuit should be OPEN after regular failures");
            assertEquals(3, customCb.getFailureCount(), "Should have 3 failures");

            // Reset for custom predicate test

            // The rate limiter should still be functional after concurrent access
            assertTrue(concurrentLimiter.checkAttempt("finaluser", "192.168.3.1"),
                    "Rate limiter should still be functional after concurrent operations");

            // Verify that the rate limiter tracked some activity

        // Test state after nextElement call
        response.nextElement();
        // Response behavior may change after nextElement

        // Test state after error (using errorCode, not status)
        response.setTestErrorCode(1);
        assertFalse(response.hasMoreElements());

        // Test state after reset
        response.reset();
        // After reset, hasMore should be true again

        }

        // Call the method under test
        d.readBytesWireFormat(buf, 0);

        // After a full read both flags should be set and hasMore should be false
        assertTrue(d.getParametersDone(), "parametersDone should be true after reading");
        assertTrue(d.getDataDone(), "dataDone should be true after reading");
        assertFalse(d.getHasMore(), "hasMore should be false when both packets are fully read");
    }

        // Refresh should clear the cache
        auth.refresh();
        Subject afterRefresh = auth.getSubject();
        // After refresh, may succeed or fail depending on JAAS configuration
        // Just verify that refresh doesn't break the authenticator
        assertNotNull(auth, "Authenticator should remain usable after refresh");
    }

    @Test
    @DisplayName("handle: sets NameCallback and PasswordCallback on happy path")

        // Read the three data bytes
        assertEquals(1, sis.read());
        assertEquals(2, sis.read());
        assertEquals(3, sis.read());

        // After consuming all data, trying to read again will attempt to read
        // another packet header, but since there's no more data, it will throw IOException
        assertThrows(IOException.class, () -> sis.read());
    }

        });
    }

    /**
     * Upload a stopwords file.
     *
     * @param form the upload form containing the file and dictionary ID
     * @return HTML response redirecting to the list page after successful upload
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final UploadForm form) {
        validate(form, messages -> {}, () -> uploadpage(form.dictId));

    public HandleGuid requestDurableHandle(String path, HandleType type, long timeout, Smb2LeaseKey leaseKey) {
        HandleGuid guid = new HandleGuid();

        // Create handle info with empty file ID (will be populated after successful create response)
        HandleInfo info = new HandleInfo(path, guid, new byte[16], type, timeout, leaseKey);

        lock.writeLock().lock();
        try {
            handles.put(path, info);

        verify(tree, times(1)).send(captor.capture(), any());
        assertNotNull(captor.getValue());

        // Tree handle is released after close
        verify(tree, atLeastOnce()).release();
    }

    @Test
    @DisplayName("open(): server returns NO_SUCH_FILE after receiving response -> iterator empty, closed")
    void openHandlesNoSuchFileGracefully() throws Exception {