anchor.diff:  
   groups() -> [
       {all_tests, [parallel], [
  +        atm_dataset_value_validation_test,
           atm_file_value_validation_test,
           atm_integer_value_validation_test,
           atm_object_value_validation_test,
  
positive.code: %%%===================================================================
  %%% API functions
  %%%===================================================================
  
  
  atm_file_value_validation_test(_Config) ->
  
negative.code: 
  %% tests
  -export([
      atm_dataset_value_validation_test/1,
      atm_file_value_validation_test/1,
      atm_integer_value_validation_test/1,
      atm_object_value_validation_test/1,
  