anchor.diff:  end_per_suite(_Config) ->
       ok.
   
  -init_per_group(upgrade, Config) ->
  -    ct_release_test:init(Config);
   init_per_group(_GroupName, Config) ->
       Config.
   
  -end_per_group(upgrade, Config) ->
  -    ct_release_test:cleanup(Config);
   end_per_group(_GroupName, Config) ->
       Config.
   
  
positive.code: suite() -> [{ct_hooks,[ts_install_cth]}].
  
  all() -> 
      [app_test, appup_test, assert_test, {group,upgrade}].
  
  groups() -> 
      [{upgrade,[minor_upgrade,major_upgrade]}].
  
  init_per_suite(Config) ->
      Config.
  
negative.code:     ok.
  
  
  -include_lib("stdlib/include/assert.hrl").
  -include_lib("stdlib/include/assert.hrl"). % test repeated inclusion
  assert_test(suite) ->
  