anchor.diff:          utils:cmd(["echo", "'" ++ DescriptionFile ++ ":'", ">> prepare_test_environment_error.log"]),
   
           StartLog = list_to_binary(utils:cmd([EnvUpScript,
  -            %% Function is used durgin OP or GR tests so starts OP or GR - not both
  +            %% Function is used durgin OP or OZ tests so starts OP or OZ - not both
               "--bin-cluster-worker", ProjectRoot,
               "--bin-worker", ProjectRoot,
  -            "--bin-gr", ProjectRoot,
  +            "--bin-oz", ProjectRoot,
               %% additionally AppMock can be started
               "--bin-appmock", AppmockRoot,
               "--bin-cm", CmRoot,
  
positive.code:             cover:start(),
  
              ExcludedModules = case application:get_env(covered_excluded_modules) of
                                    {ok, Mods} when is_list(Dirs) ->
                                        Mods;
                                    _ ->
                                        []
                                end,
  
              case ExcludedModules of
                  [] ->
  
negative.code: %% Afterwards, cleans environment by running 'cleanup.py' script.
  %% @end
  %%--------------------------------------------------------------------
  -spec clean_environment(Config :: list(), Apps :: [{AppName :: atom(), ConfigName :: atom()}]) -> ok.
  clean_environment(Config, Apps) ->
      StopStatus = try
          case cover:modules() of
  