// When & Then
            assertEquals(capacity, allocInfo.getCapacity());
            assertEquals(free, allocInfo.getFree());
        }

        @Test
        @DisplayName("Should handle zero values")
        void shouldHandleZeroValues() {
            // Given
            TestAllocInfo allocInfo = new TestAllocInfo(0L, 0L);

            // When & Then

        assertEquals("DOM", s3.getDomainName());
        assertEquals("userX", s3.getAccountName());
    }

    @Test
    @DisplayName("resolveSids(CIFSContext,server,sids,offset,length) with zero length does not resolve")
    void resolveSids_zeroLength_doesNothing() throws Exception {
        CIFSContext ctx = mock(CIFSContext.class);
        SIDCacheImpl cache = Mockito.spy(new SIDCacheImpl(ctx));

        assertTrue(rateLimiter.checkAttempt("user1", "192.168.1.9"), "Should still track account");
    }

    @Test
    public void testStatistics() throws Exception {
        // Initially stats should be zero
        AuthenticationRateLimiter.RateLimiterStats stats = rateLimiter.getStats();
        assertEquals(0, stats.getTotalBlocked());
        assertEquals(0, stats.getAccountsLocked());

    /**
     * Test setting and getting long field (serverTime)
     */
    @Test
    @DisplayName("Test serverTime field with various long values")
    public void testServerTimeField() {
        // Test with zero
        serverData.serverTime = 0L;
        assertEquals(0L, serverData.serverTime);

        // Test with positive value
        serverData.serverTime = 132514080000000000L; // Windows file time

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final int rankConstant = fessConfig.getRankFusionRankConstantAsInteger();
        // Guard against division by zero (should not happen due to caller checks, but defensive)
        if (searchers.length == 0) {
            logger.warn("searchWithMultipleSearchers called with empty searcher array");

        } else if (usage < 0) {
            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    /**
     * Emergency cleanup method called during finalization to prevent memory leaks
     */
    private void emergencyCleanup() {
        try {
            // Force usage count to zero to trigger cleanup
            this.usageCount.set(0);

            synchronized (this) {

        }
        return null;
    }

    /**
     * Deletes the user code cookie from the client browser.
     * This method removes the user identification cookie by setting it to an empty value with zero max age.
     *
     * @param request the HTTP servlet request
     */
    public void deleteUserCodeFromCookie(final HttpServletRequest request) {
        final String cookieValue = getUserCodeFromCookie(request);

        int length = SessionServicePacket.readLength(src, 0);

        assertEquals(0x01FFFF, length);
    }

    @Test
    @DisplayName("readLength should handle zero length")
    void testReadLengthZero() {
        byte[] src = { (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00 };
        int length = SessionServicePacket.readLength(src, 0);

        assertEquals(0, length);

        // Test with exact parameter size
        byte[] paramBuffer = new byte[2];
        written = trans2QueryFSInfo.writeParametersWireFormat(paramBuffer, 0);
        assertEquals(2, written);

        // Test with zero-length data buffer
        byte[] dataBuffer = new byte[0];
        written = trans2QueryFSInfo.writeDataWireFormat(dataBuffer, 0);
        assertEquals(0, written);
    }

    @Test

            final ByteBuffer buffer = ByteBuffer.wrap(nonce);
            buffer.order(java.nio.ByteOrder.LITTLE_ENDIAN);
            buffer.putLong(counter);
            // Remaining bytes (if any) stay zero-padded
        }

        return nonce;
    }

    /**
     * Generate a secure random nonce for initial session setup.
     * This method can be used when enhanced randomness is required,