anchor.diff:      utils:pforeach(fun({SessId, Node, Pids, Worker}) ->
           ?assertEqual(ok, rpc:call(Worker, session_manager,
               remove_session, [SessId])),
  -        ?assertMatch({error, _}, rpc:call(Worker, session_manager,
  -            remove_session, [SessId])),
   
           % Check whether session has been removed from cache.
           ?assertMatch({error, {not_found, _}}, rpc:call(Worker,
  
positive.code: -include_lib("ctool/include/logging.hrl").
  -include_lib("ctool/include/test/test_utils.hrl").
  -include_lib("ctool/include/test/assertions.hrl").
  -include_lib("ctool/include/test/performance.hrl").
  
  %% export for ct
  -export([all/0, init_per_suite/1, end_per_suite/1, init_per_testcase/2,
  
negative.code:     session_getters_test/1,
      session_supervisor_child_crash_test/1]).
  
  -performance({test_cases, []}).
  all() -> [
      session_manager_session_creation_and_reuse_test,
      session_manager_session_components_running_test,
      session_manager_supervision_tree_structure_test,
      session_manager_session_removal_test,
      session_getters_test,
      session_supervisor_child_crash_test
  ].
  
  -define(TIMEOUT, timer:seconds(5)).
  
  