util/stmtsummary: migrate test-infra to testify (part 2) (#26871)
util/stmtsummary: migrate test-infra to testify (part 2) (#26871)

 
coocood/tidb,c4pt0r/tidb,pingcap/tidb,ngaut/tidb,pingcap/tidb,c4pt0r/tidb,ngaut/tidb,c4pt0r/tidb,ngaut/tidb,kyle-wang/tidb,ngaut/tidb,kyle-wang/tidb,c4pt0r/tidb,pingcap/tidb,pingcap/tidb,coocood/tidb,ngaut/tidb,kyle-wang/tidb,c4pt0r/tidb,kyle-wang/tidb,kyle-wang/tidb,kyle-wang/tidb,pingcap/tidb,ngaut/tidb,pingcap/tidb,c4pt0r/tidb