* Add validation for payment_pointer and clean its space before save
* Add test for payment_pointer
* fix payment pointer regexp
* fix test
* Remove space with strip
Co-authored-by: Jacob Herrington <jacobherringtondeveloper@gmail.com>
* Remove redundant test
* Refactor clean_payment_pointer to strip_payment_pointer
- Move callback from before_save to before_validation
* Refactor PAYMENT_POINTER_REGEXP
* style: remove last comment in regexp
* fix typo
Co-authored-by: Jacob Herrington <jacobherringtondeveloper@gmail.com>