anchor.diff:  suite() -> [{ct_hooks,[ts_install_cth]}].
   
   all() -> 
  -    [simple, complicated, heavy, simple_all_keys, info].
  +    [simple, complicated, heavy, simple_all_keys, info,
  +     mixed].
   
   groups() -> 
       [].
  
positive.code:     Ks = lists:sort([K||{K,_}<-All]),
      Ks = lists:sort(erlang:get_keys()),
      ok.
  
negative.code: 
  -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
  	 init_per_group/2,end_per_group/2,
  	 mixed/1,
  	 simple/1, complicated/1, heavy/1, simple_all_keys/1, info/1]).
  -export([init_per_testcase/2, end_per_testcase/2]).
  -export([other_process/2]).
  