assertEquals(300, docList.getContentSize());

        docList.addContentSize(50);
        assertEquals(350, docList.getContentSize());
    }

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

        docList.addProcessingTime(10);
        assertEquals(10, docList.getProcessingTime());

        docList.addProcessingTime(20);