assertEquals(doc2, docList.get(0));

        assertEquals(500, docList.getContentSize());
        assertEquals(250, docList.getProcessingTime());
    }

    @Test
    public void test_clear_with_elements() {
        DocList docList = new DocList();

        Map<String, Object> doc = new HashMap<>();
        doc.put("id", "1");
        docList.add(doc);

        docList.addContentSize(1000);