anchor.diff:  ]).
   
   conditional_update_test(Config) ->
  -    [Node | _] = ?config(oz_worker_nodes, Config),
  +    [Node] = ?config(oz_worker_nodes, Config),
   
       G1 = #user_group{
           users = [{<<"U1">>, [group_change_data]}],
  
positive.code:     ?TEST_INIT(Config, ?TEST_FILE(Config, "env_desc.json")).
  
  init_per_testcase(_, _Config) ->
      [Node | _] = ?config(oz_worker_nodes, _Config),
      ok = rpc:call(Node, application, set_env, [?APP_Name, group_graph_refresh_interval, -1]),
      reset_state(Node),
      _Config.
  
  end_per_testcase(_, _Config) ->
      ok.
  
  end_per_suite(Config) ->
  
negative.code:     ?assertUnorderedMatch([{<<"U2">>, [group_change_data]}], effective_users(Doc2)),
  
      %% when
      test_utils:mock_unload(Node),
      test_utils:mock_new(Node, user_group),
      set_poi(Node, <<"1">>),
      set_poi(Node, <<"2">>),
      refresh(Node),
  
      %% then
      test_utils:mock_assert_num_calls(Node, user_group, 'after', ['_', '_', '_', '_', {ok, '_'}], 0),
      ok.
  
  grand_scenario_test(Config) ->
      [Node] = ?config(oz_worker_nodes, Config),
      [P1, P2, P3, P4, P5, P6, P7, P8, P9, P10] = [group_change_data,
          group_create_space, group_create_space_token, group_invite_user,
          group_join_space, group_leave_space, group_remove,
  