executor: migrate test-infra to testify for executor/index_lookup_join_test.go (#30260)
executor: migrate test-infra to testify for executor/index_lookup_join_test.go (#30260)

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