* solve to #79.

* fix CI failed for #80

* fix reviewing for #80

* add test cases for #80

* fix debug code for #80

* fix format bug for #80

* templates: improve by #80

* readme.md: fix comment to #80.

* templates: fix for equal min/max for #80

Signed-off-by: Back Yu <yhfszb@gmail.com>

* tests: add cases to `equal min/max len` for #80

Signed-off-by: Back Yu <yhfszb@gmail.com>

* templates: improve for #80

Signed-off-by: Back Yu <yhfszb@gmail.com>

* fix readme for #79.