UNIT_TESTING_18834_EDIT_POST

 - [ ] Controller 
    - [ ] create test_edit_post_validate_notok function
    - [ ] create test_edit_post_notok function
    - [ ] create test_edit_post_ok function
 - [ ] Model
    - [ ] create test_edit_post_validate_notok function
    - [ ] create test_edit_post_notok function
    - [ ] create test_edit_post_ok fucntion