anchor.diff:  %% a single atom.
   
   all() ->
  -    [by_channel].
  +    [by_channel, by_id].
   
   %%%%%%%%%%%%%%%%%%%%%%
   %%% Setup/Teardown %%%
  
positive.code:         lists:sort(logplex_token:lookup_by_channel(Chan)),
      logplex_token:delete_by_channel(Chan),
      [] = logplex_token:lookup_by_channel(Chan).
  
negative.code:     Config.
  
  %% Runs before the test case. Runs in the same process.
  init_per_testcase(by_id, Config) ->
      logplex_db:start_link(),
      Config;
  init_per_testcase(by_channel, Config) ->
      logplex_db:start_link(),
      [{chan, 1} | Config];
  