types: migrate test-infra to testify for fsp_test.go (#28044)
types: migrate test-infra to testify for fsp_test.go (#28044)

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