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%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License at
%% http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
%% License for the specific language governing rights and limitations
%% under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developer of the Original Code is VMware, Inc.
%% Copyright (c) 2011-2012 VMware, Inc. All rights reserved.
%%
-module(supervisor2_tests).
-behaviour(supervisor2).
-export([test_all/0, start_link/0]).
-export([init/1]).
-include_lib("eunit/include/eunit.hrl").
-define(TEST_RUNS, 2000).
-define(SLOW_TEST_RUNS, 45).
-define(CHILDREN, 100).
test_all() ->
eunit:test(?MODULE, [verbose]).
simple_child_shutdown_without_deadlock_test_() ->
lists:duplicate(?TEST_RUNS,
[{timeout, 60, fun test_clean_stop/0}]).
simple_child_shutdown_with_timeout_test_() ->
lists:duplicate(?SLOW_TEST_RUNS,
[{timeout, 120, fun test_timeout/0}]).
test_clean_stop() ->
test_it(stop).
test_timeout() ->
test_it(ignored).
test_it(SigStop) ->
{ok, Pid} = supervisor2:start_link(?MODULE, [?CHILDREN]),
start_and_terminate_children(SigStop, Pid, ?CHILDREN),
unlink(Pid),
exit(Pid, shutdown).
start_link() ->
Pid = spawn_link(fun () ->
process_flag(trap_exit, true),
receive stop -> ok end
end),
{ok, Pid}.
init([N]) ->
{ok, {{one_for_one, 0, 1},
[{test_sup, {supervisor2, start_link,
[{local, ?MODULE}, ?MODULE, []]},
transient, N * 100, supervisor, [?MODULE]}]}};
init([]) ->
{ok, {{simple_one_for_one_terminate, 0, 1},
[{test_worker, {?MODULE, start_link, []},
temporary, 1000, worker, [?MODULE]}]}}.
start_and_terminate_children(SigStop, Sup, N) ->
TestSupPid = whereis(?MODULE),
ChildPids = [begin
{ok, ChildPid} = supervisor2:start_child(TestSupPid, []),
ChildPid
end || _ <- lists:seq(1, N)],
erlang:monitor(process, TestSupPid),
[P ! SigStop || P <- ChildPids],
?assertEqual(ok, supervisor2:terminate_child(Sup, test_sup)),
?assertMatch({ok,_}, supervisor2:restart_child(Sup, test_sup)),
receive
{'DOWN', _MRef, process, TestSupPid, Reason} ->
?assertMatch(shutdown, Reason)
end.
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