if (bufferManager != null) {
            bufferManager.cleanup();
        }
        if (mocks != null) {
            mocks.close();
        }
    }

    @Test
    public void testGetSendRegion() throws Exception {
        RdmaMemoryRegion region = bufferManager.getSendRegion(1024);
        assertNotNull(region, "Send region should not be null");