bowen@bowen-PC:~/code/Go/TiDB/learning_tinysql/tinysql-template-bowenxiaoCUHKSZ/planner/core$ go test ./ -check.f TestPredictPushDown
ok github.com/pingcap/tidb/planner/core 0.017s
But I have already commented all my functional code for PredicatePushDown method of logicalAggregation.