assertEquals(132L, MemoryUtil.sizeOf(Maps.map("1234567890", "1234567890").$()));
    }

    @Test
    public void test_getMemoryUsageLog() {
        String log = MemoryUtil.getMemoryUsageLog();

        assertNotNull(log);
        assertTrue(log.startsWith("Mem:{used "));
        assertTrue(log.contains(", heap "));
        assertTrue(log.contains(", max "));
        assertTrue(log.endsWith("}"));

        System.gc();
        long current = MemoryUtil.getUsedMemory();
        for (int i = 0; i < 10000; i++) {
            if (i % 1000 == 0) {
                logger.info("count:" + i + ", " + MemoryUtil.getMemoryUsageLog());
            }
            ResponseData responseData = new ResponseData();
            responseData.setCharSet("UTF-8");
            responseData.setContentLength(data.length());