assertFalse(deleteResponse.hasError());

        suggester.refresh();
        assertEquals(0, suggester.getAllWordsNum());
    }

    @Test
    public void test_deleteDocumentWords() throws Exception {
        SuggestItem[] items = new SuggestItem[2];

        String[][] readings1 = new String[1][];
        readings1[0] = new String[] { "doc" };

        assertEquals(0, suggester.getAllWordsNum());
        assertEquals(0, suggester.getDocumentWordsNum());
        assertEquals(0, suggester.getQueryWordsNum());
    }

    @Test
    public void test_deleteDocumentWords() throws Exception {
        SuggestItem[] items = getItemSet1();
        suggester.indexer().index(items);
        suggester.refresh();

        assertEquals(2, suggester.getAllWordsNum());