migrate test-infra to testify for statistics

[tisonkun]

• migrate test-infra to testify for statistics/analyze_jobs_test.go #28116
• migrate test-infra to testify for statistics/sample_test.go #28117
• migrate test-infra to testify for statistics/feedback_test.go #28118
• migrate test-infra to testify for statistics/scalar_test.go #28119
• migrate test-infra to testify for statistics/histogram_test.go #28120
• migrate test-infra to testify for statistics/fmsketch_test.go #28121
• migrate test-infra to testify for statistics/integration_test.go #28122
• migrate test-infra to testify for statistics/statistics_test.go #28123
• migrate test-infra to testify for statistics/cmsketch_test.go #28124
• migrate test-infra to testify for statistics/handle/ddl_test.go #28125
• migrate test-infra to testify for statistics/handle/handle_test.go #28126
• migrate test-infra to testify for statistics/handle/update_test.go #28127
• migrate test-infra to testify for statistics/handle/gc_test.go #28128
• migrate test-infra to testify for statistics/handle/update_list_test.go #28129
• migrate test-infra to testify for statistics/handle/dump_test.go #28130
• migrate test-infra to testify for statistics/selectivity_test.go #28131

[feitian124]

/assign

[feitian124]

knowlege about statistics
pingcap/tidb-dev-guide#70

[feitian124]

hi @tisonkun , please split this task to sub tasks for me

[tisonkun]

@feitian124 ok. Do you have a plan how to split the tasks? In files?

[feitian124]

ok, it is fine.
2 small files and 2 large files, you can adjust.

❯ find statistics -name "*_test.go" -exec sh -c '[ -f "$0" ] && printf "%6s\t\t%s\n" "$(wc -l<"$0")" "$0"' {} \;
    42          statistics/analyze_jobs_test.go
   308          statistics/sample_test.go
   316          statistics/feedback_test.go
   264          statistics/scalar_test.go
   467          statistics/histogram_test.go
   108          statistics/fmsketch_test.go
   483          statistics/integration_test.go
   715          statistics/statistics_test.go
   307          statistics/cmsketch_test.go
   264          statistics/handle/ddl_test.go
  3075          statistics/handle/handle_test.go
  2331          statistics/handle/update_test.go
   136          statistics/handle/gc_test.go
    50          statistics/handle/update_list_test.go
   340          statistics/handle/dump_test.go
   966          statistics/selectivity_test.go

[tisonkun]

ok. I will create all these files for you. You can assign them to yourself.

[feitian124]

cheers 🎉
statistics are almost done, next step is statistics/handle, hopefully finish in 2 weeks.
after that, i wish could allocate some time to do none-test-migrate tasks besides migrate tasks.

@tisonkun

[feitian124]

there are still lots todo, 325 todo, 736 in total, in which about 30 cases are from parser package.

❯ find . -name "*_test.go" -not -path "./vendor/*"  | xargs grep "github.com/pingcap/check" | wc -l
325
❯ find . -name "*_test.go" -not -path "./vendor/*"  | wc -l
736

❯ find parser -name "*_test.go"   | wc -l
30
❯ find parser -name "*_test.go"   | xargs grep "github.com/pingcap/check" | wc -l
27

[tisonkun]

@feitian124 yes. We may need more contributors & committers to work on the remaining packages.