assertNotNull(leaseManager.getLease(key));

        // Wait a bit and then cleanup with a very short expiration time
        Thread.sleep(10);
        int cleaned = leaseManager.cleanupExpiredLeases(1); // 1ms expiration

        assertEquals(1, cleaned);
        assertNull(leaseManager.getLease(key));
    }

    @Test
    @DisplayName("Should not clean up recent leases")

            cleanupInterval = DEFAULT_LEASE_CLEANUP_INTERVAL;
        }

        final long finalCleanupInterval = cleanupInterval;
        this.cleanupExecutor.scheduleWithFixedDelay(() -> cleanupExpiredLeases(finalCleanupInterval * 2), cleanupInterval, cleanupInterval,
                TimeUnit.MILLISECONDS);
    }

    /**
     * Lease entry containing lease state information
     */