UNIT_TESTING_18320_CREATE_USER_ACCOUNT

 - [x] MODEL
    - [x] test_validate_user
    - [x] test_check_user_exist_ok
    - [x] test_check_user_not_exist   
    - [x] test_create_user
    - [x] test_create_token
 - [x] CONTROLLER
    - [x] test_validate_user 
    - [x] test_check_user_exist
    - [x] test_create_user_ok    
 - [x] Check code coverage