anchor.diff:  %% common_test callbacks
   %% ===================================================================
   
  +suite() ->
  +    [{timetrap, infinity}].
  +
   init_per_suite(_Config) ->
       _Config.
   
  
positive.code: -author("Christopher S. Meiklejohn <christopher.meiklejohn@gmail.com>").
  
  %% common_test callbacks
  -export([%% suite/0,
           init_per_suite/1,
           end_per_suite/1,
           init_per_testcase/2,
  
negative.code: 
  init_per_testcase(Case, _Config) ->
      ct:pal("Beginning test case ~p", [Case]),
      _Config.
  
  end_per_testcase(Case, _Config) ->
  