anchor.diff:      {GuidsAndPaths, QosList} = prepare_qos_status_test_env(Config, DirStructure([?GET_DOMAIN_BIN(Worker1)]), SpaceId, Name),
       % check that file is on qos failed files list
       FileGuid = qos_tests_utils:get_guid(resolve_path(SpaceId, Name, []), GuidsAndPaths),
  -    rpc:call(Worker1, qos_entry, apply_to_all_in_failed_files_list, [
  -        file_id:guid_to_space_id(FileGuid),
  -        fun(FileUuid) -> ct:print(FileUuid) end
  -    ]),
  -    ?assert(is_file_in_failed_files_list(TargetWorker, FileGuid)),
  +    ?assertEqual(true, is_file_in_failed_files_list(TargetWorker, FileGuid), ?ATTEMPTS),
       ?assert(is_failed_files_list_empty(get_workers_list_without_provider(Workers, ?GET_DOMAIN_BIN(TargetWorker)), 
           file_id:guid_to_space_id(FileGuid))),
       % check file distribution (file blocks should be only on source provider)
  
positive.code:     
      % create new QoS entry and check, that it is not fulfilled
      {GuidsAndPaths, QosList} = prepare_qos_status_test_env(Config, DirStructure([?GET_DOMAIN_BIN(Worker1)]), SpaceId, Name),
      % check file distribution (file blocks should be only on source provider)
      ?assert(qos_tests_utils:assert_distribution_in_dir_structure(Config, DirStructure([?GET_DOMAIN_BIN(Worker1)]), GuidsAndPaths)),
      % check that file is on qos failed files list
      FileGuid = qos_tests_utils:get_guid(resolve_path(SpaceId, Name, [1]), GuidsAndPaths),
      ?assert(is_file_in_failed_files_list(TargetWorker, FileGuid)),
      ?assert(is_failed_files_list_empty(get_workers_list_without_provider(Workers, ?GET_DOMAIN_BIN(TargetWorker)),
          file_id:guid_to_space_id(FileGuid))),
      % initialize periodic check of failed files
      rpc:multicall(Workers, qos_worker, init_retry_failed_files, []),
      
  
negative.code:     {GuidsAndPaths, [QosEntryId]} = prepare_qos_status_test_env(Config, DirStructure([?GET_DOMAIN_BIN(Worker1)]), SpaceId, Name),
      % add second entry to the same file
      {_, QosEntryList} = prepare_qos_status_test_env(Config, undefined, SpaceId, Name),
      % check that file is on qos failed files list
      FileGuid = qos_tests_utils:get_guid(resolve_path(SpaceId, Name, []), GuidsAndPaths),
      ?assertEqual(true, is_file_in_failed_files_list(TargetWorker, FileGuid), ?ATTEMPTS),
      ?assert(is_failed_files_list_empty(get_workers_list_without_provider(Workers, ?GET_DOMAIN_BIN(TargetWorker)),
          file_id:guid_to_space_id(FileGuid))),
      % check file distribution (file blocks should be only on source provider)
      ?assert(qos_tests_utils:assert_distribution_in_dir_structure(Config, DirStructure([?GET_DOMAIN_BIN(Worker1)]), GuidsAndPaths)),
      % initialize periodic check of failed files
      rpc:multicall(Workers, qos_worker, init_retry_failed_files, []),
      
  