suggester.refresh();
        assertEquals("Empty index should have 0 words", 0, suggester.getAllWordsNum());
    }

    @Test
    public void test_createIndexIfNothing_noOpWhenIndexExists() throws Exception {
        Suggester suggester = createSuggester();

        boolean firstCreate = suggester.createIndexIfNothing();
        assertTrue("First call should create index", firstCreate);