@Override
    public MapperResult getTenantIdList(MapperContext context) {
        String sql = "SELECT tenant_id FROM config_info WHERE tenant_id != '" + NamespaceUtil.getNamespaceDefaultId()
                + "' GROUP BY tenant_id LIMIT " + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, Collections.emptyList());
    }
@Test
    void testGetTenantIdList() {
        MapperResult mapperResult = configInfoMapperByMySql.getTenantIdList(context);
        assertEquals(mapperResult.getSql(), "SELECT tenant_id FROM config_info WHERE tenant_id != '" + NamespaceUtil.getNamespaceDefaultId()
                + "' GROUP BY tenant_id LIMIT " + startRow + "," + pageSize);
        assertArrayEquals(mapperResult.getParamList().toArray(), emptyObjs);
    }