auto-round

7a75218a - Refator UT and improve code coverage (#2057)

Refator UT and improve code coverage (#2057) Signed-off-by: Sun, Xuehao <xuehao.sun@intel.com> Signed-off-by: lvliang-intel <liang1.lv@intel.com> Signed-off-by: chensuyue <suyue.chen@intel.com>