diff options
Diffstat (limited to 'lib/stdlib/test/supervisor_SUITE.erl')
| -rw-r--r-- | lib/stdlib/test/supervisor_SUITE.erl | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/lib/stdlib/test/supervisor_SUITE.erl b/lib/stdlib/test/supervisor_SUITE.erl index c98654aef7..015b09f35e 100644 --- a/lib/stdlib/test/supervisor_SUITE.erl +++ b/lib/stdlib/test/supervisor_SUITE.erl @@ -37,6 +37,7 @@ sup_start_ignore_child/1, sup_start_ignore_temporary_child/1, sup_start_ignore_temporary_child_start_child/1, sup_start_ignore_temporary_child_start_child_simple/1, + sup_start_ignore_permanent_child_start_child_simple/1, sup_start_error_return/1, sup_start_fail/1, sup_start_map/1, sup_start_map_faulty_specs/1, sup_stop_infinity/1, sup_stop_timeout/1, sup_stop_brutal_kill/1, @@ -53,7 +54,8 @@ temporary_abnormal/1, temporary_bystander/1]). %% Restart strategy tests --export([ one_for_one/1, +-export([ multiple_restarts/1, + one_for_one/1, one_for_one_escalation/1, one_for_all/1, one_for_all_escalation/1, one_for_all_other_child_fails_restart/1, simple_one_for_one/1, simple_one_for_one_escalation/1, @@ -78,6 +80,7 @@ suite() -> all() -> [{group, sup_start}, {group, sup_start_map}, {group, sup_stop}, child_adm, child_adm_simple, extra_return, child_specs, sup_flags, + multiple_restarts, {group, restart_one_for_one}, {group, restart_one_for_all}, {group, restart_simple_one_for_one}, @@ -97,6 +100,7 @@ groups() -> sup_start_ignore_child, sup_start_ignore_temporary_child, sup_start_ignore_temporary_child_start_child, sup_start_ignore_temporary_child_start_child_simple, + sup_start_ignore_permanent_child_start_child_simple, sup_start_error_return, sup_start_fail]}, {sup_start_map, [], [sup_start_map, sup_start_map_faulty_specs]}, @@ -248,6 +252,27 @@ sup_start_ignore_temporary_child_start_child_simple(Config) [1,1,0,1] = get_child_counts(sup_test). %%------------------------------------------------------------------------- +%% Tests what happens if child's init-callback returns ignore for a +%% permanent child when child is started with start_child/2, and the +%% supervisor is simple_one_for_one. +%% Child spec shall NOT be saved!!! +sup_start_ignore_permanent_child_start_child_simple(Config) + when is_list(Config) -> + process_flag(trap_exit, true), + Child1 = {child1, {supervisor_1, start_child, [ignore]}, + permanent, 1000, worker, []}, + {ok, Pid} = start_link({ok, {{simple_one_for_one, 2, 3600}, [Child1]}}), + + {ok, undefined} = supervisor:start_child(sup_test, []), + {ok, CPid2} = supervisor:start_child(sup_test, []), + + [{undefined, CPid2, worker, []}] = supervisor:which_children(sup_test), + [1,1,0,1] = get_child_counts(sup_test), + + %% Regression test: check that the supervisor terminates without error. + exit(Pid, shutdown), + check_exit_reason(Pid, shutdown). +%%------------------------------------------------------------------------- %% Tests what happens if init-callback returns a invalid value. sup_start_error_return(Config) when is_list(Config) -> process_flag(trap_exit, true), @@ -873,6 +898,39 @@ temporary_bystander(_Config) -> [{child1, _, _, _}] = supervisor:which_children(SupPid2). %%------------------------------------------------------------------------- +%% Test restarting a process multiple times, being careful not +%% to exceed the maximum restart frquency. +multiple_restarts(Config) when is_list(Config) -> + process_flag(trap_exit, true), + Child1 = #{id => child1, + start => {supervisor_1, start_child, []}, + restart => permanent, + shutdown => brutal_kill, + type => worker, + modules => []}, + SupFlags = #{strategy => one_for_one, + intensity => 1, + period => 1}, + {ok, SupPid} = start_link({ok, {SupFlags, []}}), + {ok, CPid1} = supervisor:start_child(sup_test, Child1), + + %% Terminate the process several times, but being careful + %% not to exceed the maximum restart intensity. + terminate(SupPid, CPid1, child1, abnormal), + _ = [begin + receive after 2100 -> ok end, + [{_, Pid, _, _}|_] = supervisor:which_children(sup_test), + terminate(SupPid, Pid, child1, abnormal) + end || _ <- [1,2,3]], + + %% Verify that the supervisor is still alive and clean up. + ok = supervisor:terminate_child(SupPid, child1), + ok = supervisor:delete_child(SupPid, child1), + exit(SupPid, kill), + ok. + + +%%------------------------------------------------------------------------- %% Test the one_for_one base case. one_for_one(Config) when is_list(Config) -> process_flag(trap_exit, true), |