anchor.diff:  
   %% API
   -export([all/0, groups/0, init_per_suite/1, end_per_suite/1, init_per_testcase/2, end_per_testcase/2]).
  --export([provider_crud_test/1, provider_space_test/1, provider_check_test/1, user_crud_test/1,
  -    user_space_test/1, many_users_space_test/1, user_group_test/1, many_users_group_test/1,
  -    group_crud_test/1, group_users_test/1, group_privileges_test/1, group_spaces_test/1,
  -    spaces_crud_by_user_test/1, spaces_crud_by_provider_test/1, spaces_user_test/1,
  -    spaces_group_test/1, spaces_provider_test/1, spaces_privileges_test/1]).
  +-export([provider_create_test/1, provider_update_test/1, provider_get_data_test/1,
  +    provider_delete_test/1, provider_create_space_test/1, provider_get_space_data_test/1,
  +    provider_delete_space_test/1, provider_check_port_test/1, provider_check_ip_test/1,
  +    provider_support_space_test/1, user_authenticate_test/1, user_update_test/1, user_delete_test/1,
  +    user_merge_test/1, user_create_space_test/1, user_default_space_test/1, user_delete_space_test/1,
  +    user_get_space_data_test/1, user_space_invite_test/1, user_get_group_data_test/1,
  +    user_leave_group_test/1, user_group_invite_test/1, group_create_test/1, group_update_test/1,
  +    group_delete_test/1, user_create_group_test/1, group_invite_user_test/1,
  +    group_get_user_data_test/1, group_delete_user_test/1, group_get_privileges_test/1,
  +    group_set_privileges_test/1, group_create_space_test/1, group_get_space_data_test/1,
  +    group_delete_space_test/1, group_space_invitation_test/1, space_create_by_user_test/1,
  +    space_create_by_provider_test/1, space_update_test/1, space_delete_test/1,
  +    space_get_users_test/1, space_get_user_data_test/1,
  +    space_delete_user_test/1, space_get_groups_test/1, space_get_group_data_test/1,
  +    space_delete_group_test/1, space_get_providers_test/1, space_get_provider_data_test/1,
  +    space_delete_provider_test/1, space_get_privileges_test/1, space_set_privileges_test/1]).
   
   %%%===================================================================
   %%% API functions
   %%%===================================================================
   
   -performance({test_cases, []}).
  -
   all() ->
       [
           {group, provider_rest_module_test_group},
  
positive.code:     Resp = do_request(RestAddress ++ "/user/authorize", Headers, post, Body),
      {ok, _, _, SerializedDischarges} = Resp,
      prepare_macaroons_headers(SerializedMacaroon, SerializedDischarges).
  
  join_user_to_space(Token, ReqParams) ->
      {RestAddress, Headers, Options} = ReqParams,
  
negative.code:     ?assertMatch(ok, check_status(delete_group(SID, UserReqParams2))).
  
  clean_space_privileges(SID, UserId, ReqParams) ->
      set_space_privileges(users, SID, UserId, [space_view_data], ReqParams).