Fix unit test error
Fix unit test error

Signed-off-by: zouyu <fe87c7a761ef1939f89153b2599d7d74395f947c@cn.fujitsu.com>

tinyspeck/vitess,mahak/vitess,vitessio/vitess,mahak/vitess,vitessio/vitess,mahak/vitess,vitessio/vitess,vitessio/vitess,tinyspeck/vitess,vitessio/vitess,mahak/vitess,mahak/vitess,vitessio/vitess,mahak/vitess,mahak/vitess,vitessio/vitess,tinyspeck/vitess,mahak/vitess,tinyspeck/vitess,vitessio/vitess,tinyspeck/vitess,tinyspeck/vitess,tinyspeck/vitess