}

    @Test(expected = SuggesterException.class)
    public void testDeleteByQueryWithInvalidIndex() {
        // Test delete with non-existent index
        SuggestUtil.deleteByQuery(client, settings, "nonexistent_index", QueryBuilders.matchAllQuery());
    }

    @Test
    public void testDeleteScrollContext() {
        // Test with null scrollId (should not throw exception)