assertNull(entry1);
            assertNull(leaseManager.getLease(key2));
        }
    }

    @Test
    @DisplayName("Should evict oldest leases when max limit reached")
    void testMaxLeaseEviction() throws InterruptedException {
        // Create a context with low max lease limit
        Configuration limitedConfig = mock(Configuration.class);
        CIFSContext limitedContext = mock(CIFSContext.class);