anchor.diff:       {options, [], [t_binary, eof, input_only, output_only]},
        {multiple_packets, [], [mul_basic, mul_slow_writes]},
        {tps, [], [tps_16_bytes, tps_1K]}].
  -
  -init_per_group(_GroupName, Config) ->
  -    Config.
  -
  -end_per_group(_GroupName, Config) ->
  -    Config.
   
   init_per_testcase(Case, Config) ->
       [{testcase, Case} |Config].
  
positive.code: 
  %% Test that we can handle a very very large environment gracefully.
  huge_env(Config) when is_list(Config) ->
      Vars = case os:type() of
                 {win32,_} -> 500;
                 _ ->
  
negative.code: %%
  
  
  -export([all/0, suite/0, groups/0,
           init_per_testcase/2, end_per_testcase/2,
           init_per_suite/1, end_per_suite/1,
           stream_small/1, stream_big/1,
  