assertEquals(0, response.getTotal());
        assertEquals(0, response.getWords().size());
        assertEquals(0, response.getItems().size());
    }

    @Test
    public void test_numMatchesWordsSize() throws Exception {
        List<String> words = new ArrayList<>();
        for (int i = 0; i < 5; i++) {
            words.add("word" + i);
        }