%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%%-------------------------------------------------------------------
%%% File : signal_SUITE.erl
%%% Author : Rickard Green <[email protected]>
%%% Description : Test signals
%%%
%%% Created : 10 Jul 2006 by Rickard Green <[email protected]>
%%%-------------------------------------------------------------------
-module(signal_SUITE).
-author('[email protected]').
%-define(line_trace, 1).
-include_lib("common_test/include/ct.hrl").
-export([all/0, suite/0,init_per_suite/1, end_per_suite/1]).
-export([init_per_testcase/2, end_per_testcase/2]).
% Test cases
-export([xm_sig_order/1]).
init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
[{testcase, Func}|Config].
end_per_testcase(_Func, _Config) ->
ok.
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
suite() ->
[{ct_hooks,[ts_install_cth]},
{timetrap, {minutes, 2}}].
all() ->
[xm_sig_order].
%% Test that exit signals and messages are received in correct order
xm_sig_order(Config) when is_list(Config) ->
LNode = node(),
repeat(fun () -> xm_sig_order_test(LNode) end, 1000),
{ok, RNode} = start_node(Config),
repeat(fun () -> xm_sig_order_test(RNode) end, 1000),
stop_node(RNode),
ok.
xm_sig_order_test(Node) ->
P = spawn(Node, fun () -> xm_sig_order_proc() end),
M = erlang:monitor(process, P),
P ! may_reach,
P ! may_reach,
P ! may_reach,
exit(P, good_signal_order),
P ! may_not_reach,
P ! may_not_reach,
P ! may_not_reach,
receive
{'DOWN', M, process, P, R} ->
good_signal_order = R
end.
xm_sig_order_proc() ->
receive
may_not_reach -> exit(bad_signal_order);
may_reach -> ok
after 0 -> erlang:yield()
end,
xm_sig_order_proc().
%%
%% -- Internal utils --------------------------------------------------------
%%
repeat(_Fun, N) when is_integer(N), N =< 0 ->
ok;
repeat(Fun, N) when is_integer(N) ->
Fun(),
repeat(Fun, N-1).
start_node(Config) ->
Name = list_to_atom(atom_to_list(?MODULE)
++ "-" ++ atom_to_list(proplists:get_value(testcase, Config))
++ "-" ++ integer_to_list(erlang:system_time(second))
++ "-" ++ integer_to_list(erlang:unique_integer([positive]))),
Pa = filename:dirname(code:which(?MODULE)),
test_server:start_node(Name, slave, [{args, "-pa " ++ Pa}]).
stop_node(Node) ->
test_server:stop_node(Node).
