Add a regex test to ensure that call_next_at follows pattern
Add a regex test to ensure that call_next_at follows pattern

Pattern must be: yyyy-mm-dd hh:mm
length: 16

Signed-off-by: Siddharth Kannan <805f056820c7a1cecc4ab591b8a0a604b501a0b7@gmail.com>
icyflame/erp-rails,icyflame/erp-rails,aniarya82/networking-rails,icyflame/erp-rails,aniarya82/networking-rails,aniarya82/networking-rails