}

    public void test_setHighlightPrefix() {
        queryHelper.setHighlightPrefix("highlight_");
        assertEquals("highlight_", queryHelper.getHighlightPrefix());
    }

    public void test_getHighlightPrefix() {
        assertEquals("hl_", queryHelper.getHighlightPrefix());
    }

    public void test_getDefaultFacetInfo() {
        assertNull(queryHelper.getDefaultFacetInfo());
    }