%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1996-2014. 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%
%%
-module(gen_fsm_SUITE).
-include_lib("common_test/include/ct.hrl").
%% Test cases
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2]).
-export([start1/1, start2/1, start3/1, start4/1, start5/1, start6/1,
start7/1, start8/1, start9/1, start10/1, start11/1, start12/1]).
-export([stop1/1, stop2/1, stop3/1, stop4/1, stop5/1, stop6/1, stop7/1,
stop8/1, stop9/1, stop10/1]).
-export([ abnormal1/1, abnormal2/1]).
-export([shutdown/1]).
-export([ sys1/1,
call_format_status/1, error_format_status/1, terminate_crash_format/1,
get_state/1, replace_state/1]).
-export([hibernate/1,hiber_idle/3,hiber_wakeup/3,hiber_idle/2,hiber_wakeup/2]).
-export([enter_loop/1]).
%% Exports for apply
-export([enter_loop/2]).
%% The gen_fsm behaviour
-export([init/1, handle_event/3, handle_sync_event/4, terminate/3,
handle_info/3, format_status/2]).
-export([idle/2, idle/3,
timeout/2,
wfor_conf/2, wfor_conf/3,
connected/2, connected/3]).
-export([state0/3]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[{group, start}, {group, abnormal}, shutdown,
{group, sys}, hibernate, enter_loop].
groups() ->
[{start, [],
[start1, start2, start3, start4, start5, start6, start7,
start8, start9, start10, start11, start12]},
{stop, [],
[stop1, stop2, stop3, stop4, stop5, stop6, stop7, stop8, stop9, stop10]},
{abnormal, [], [abnormal1, abnormal2]},
{sys, [],
[sys1, call_format_status, error_format_status, terminate_crash_format,
get_state, replace_state]}].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
%% anonymous
start1(Config) when is_list(Config) ->
%%OldFl = process_flag(trap_exit, true),
?line {ok, Pid0} = gen_fsm:start_link(gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid0),
?line ok = do_sync_func_test(Pid0),
stop_it(Pid0),
%% ?line stopped = gen_fsm:sync_send_all_state_event(Pid0, stop),
%% ?line {'EXIT', {timeout,_}} =
%% (catch gen_fsm:sync_send_event(Pid0, hej)),
[] = get_messages(),
%%process_flag(trap_exit, OldFl),
ok.
%% anonymous w. shutdown
start2(Config) when is_list(Config) ->
%% Dont link when shutdown
?line {ok, Pid0} = gen_fsm:start(gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid0),
?line ok = do_sync_func_test(Pid0),
?line shutdown_stopped =
gen_fsm:sync_send_all_state_event(Pid0, stop_shutdown),
?line {'EXIT', {noproc,_}} =
(catch gen_fsm:sync_send_event(Pid0, hej)),
[] = get_messages(),
ok.
%% anonymous with timeout
start3(Config) when is_list(Config) ->
%%OldFl = process_flag(trap_exit, true),
?line {ok, Pid0} = gen_fsm:start(gen_fsm_SUITE, [], [{timeout,5}]),
?line ok = do_func_test(Pid0),
?line ok = do_sync_func_test(Pid0),
?line stop_it(Pid0),
?line {error, timeout} = gen_fsm:start(gen_fsm_SUITE, sleep,
[{timeout,5}]),
[] = get_messages(),
%%process_flag(trap_exit, OldFl),
ok.
%% anonymous with ignore
start4(Config) when is_list(Config) ->
OldFl = process_flag(trap_exit, true),
?line ignore = gen_fsm:start(gen_fsm_SUITE, ignore, []),
[] = get_messages(),
process_flag(trap_exit, OldFl),
ok.
%% anonymous with stop
start5(Config) when is_list(Config) ->
OldFl = process_flag(trap_exit, true),
?line {error, stopped} = gen_fsm:start(gen_fsm_SUITE, stop, []),
[] = get_messages(),
process_flag(trap_exit, OldFl),
ok.
%% anonymous linked
start6(Config) when is_list(Config) ->
?line {ok, Pid} = gen_fsm:start_link(gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid),
?line ok = do_sync_func_test(Pid),
?line stop_it(Pid),
[] = get_messages(),
ok.
%% global register linked
start7(Config) when is_list(Config) ->
?line {ok, Pid} =
gen_fsm:start_link({global, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start_link({global, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start({global, my_fsm}, gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid),
?line ok = do_sync_func_test(Pid),
?line ok = do_func_test({global, my_fsm}),
?line ok = do_sync_func_test({global, my_fsm}),
?line stop_it({global, my_fsm}),
[] = get_messages(),
ok.
%% local register
start8(Config) when is_list(Config) ->
%%OldFl = process_flag(trap_exit, true),
?line {ok, Pid} =
gen_fsm:start({local, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start({local, my_fsm}, gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid),
?line ok = do_sync_func_test(Pid),
?line ok = do_func_test(my_fsm),
?line ok = do_sync_func_test(my_fsm),
?line stop_it(Pid),
[] = get_messages(),
%%process_flag(trap_exit, OldFl),
ok.
%% local register linked
start9(Config) when is_list(Config) ->
%%OldFl = process_flag(trap_exit, true),
?line {ok, Pid} =
gen_fsm:start_link({local, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start({local, my_fsm}, gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid),
?line ok = do_sync_func_test(Pid),
?line ok = do_func_test(my_fsm),
?line ok = do_sync_func_test(my_fsm),
?line stop_it(Pid),
[] = get_messages(),
%%process_flag(trap_exit, OldFl),
ok.
%% global register
start10(Config) when is_list(Config) ->
?line {ok, Pid} =
gen_fsm:start({global, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start({global, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start_link({global, my_fsm}, gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid),
?line ok = do_sync_func_test(Pid),
?line ok = do_func_test({global, my_fsm}),
?line ok = do_sync_func_test({global, my_fsm}),
?line stop_it({global, my_fsm}),
[] = get_messages(),
ok.
%% Stop registered processes
start11(Config) when is_list(Config) ->
?line {ok, Pid} =
gen_fsm:start_link({local, my_fsm}, gen_fsm_SUITE, [], []),
?line stop_it(Pid),
?line {ok, _Pid1} =
gen_fsm:start_link({local, my_fsm}, gen_fsm_SUITE, [], []),
?line stop_it(my_fsm),
?line {ok, Pid2} =
gen_fsm:start({global, my_fsm}, gen_fsm_SUITE, [], []),
?line stop_it(Pid2),
receive after 1 -> true end,
?line Result =
gen_fsm:start({global, my_fsm}, gen_fsm_SUITE, [], []),
io:format("Result = ~p~n",[Result]),
?line {ok, _Pid3} = Result,
?line stop_it({global, my_fsm}),
[] = get_messages(),
ok.
%% Via register linked
start12(Config) when is_list(Config) ->
?line dummy_via:reset(),
?line {ok, Pid} =
gen_fsm:start_link({via, dummy_via, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start_link({via, dummy_via, my_fsm}, gen_fsm_SUITE, [], []),
?line {error, {already_started, Pid}} =
gen_fsm:start({via, dummy_via, my_fsm}, gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid),
?line ok = do_sync_func_test(Pid),
?line ok = do_func_test({via, dummy_via, my_fsm}),
?line ok = do_sync_func_test({via, dummy_via, my_fsm}),
?line stop_it({via, dummy_via, my_fsm}),
[] = get_messages(),
ok.
%% Anonymous, reason 'normal'
stop1(_Config) ->
{ok, Pid} = gen_fsm:start(?MODULE, [], []),
ok = gen_fsm:stop(Pid),
false = erlang:is_process_alive(Pid),
{'EXIT',noproc} = (catch gen_fsm:stop(Pid)),
ok.
%% Anonymous, other reason
stop2(_Config) ->
{ok,Pid} = gen_fsm:start(?MODULE, [], []),
ok = gen_fsm:stop(Pid, other_reason, infinity),
false = erlang:is_process_alive(Pid),
ok.
%% Anonymous, invalid timeout
stop3(_Config) ->
{ok,Pid} = gen_fsm:start(?MODULE, [], []),
{'EXIT',_} = (catch gen_fsm:stop(Pid, other_reason, invalid_timeout)),
true = erlang:is_process_alive(Pid),
ok = gen_fsm:stop(Pid),
false = erlang:is_process_alive(Pid),
ok.
%% Registered name
stop4(_Config) ->
{ok,Pid} = gen_fsm:start({local,to_stop},?MODULE, [], []),
ok = gen_fsm:stop(to_stop),
false = erlang:is_process_alive(Pid),
{'EXIT',noproc} = (catch gen_fsm:stop(to_stop)),
ok.
%% Registered name and local node
stop5(_Config) ->
{ok,Pid} = gen_fsm:start({local,to_stop},?MODULE, [], []),
ok = gen_fsm:stop({to_stop,node()}),
false = erlang:is_process_alive(Pid),
{'EXIT',noproc} = (catch gen_fsm:stop({to_stop,node()})),
ok.
%% Globally registered name
stop6(_Config) ->
{ok, Pid} = gen_fsm:start({global, to_stop}, ?MODULE, [], []),
ok = gen_fsm:stop({global,to_stop}),
false = erlang:is_process_alive(Pid),
{'EXIT',noproc} = (catch gen_fsm:stop({global,to_stop})),
ok.
%% 'via' registered name
stop7(_Config) ->
dummy_via:reset(),
{ok, Pid} = gen_fsm:start({via, dummy_via, to_stop},
?MODULE, [], []),
ok = gen_fsm:stop({via, dummy_via, to_stop}),
false = erlang:is_process_alive(Pid),
{'EXIT',noproc} = (catch gen_fsm:stop({via, dummy_via, to_stop})),
ok.
%% Anonymous on remote node
stop8(_Config) ->
{ok,Node} = test_server:start_node(gen_fsm_SUITE_stop8,slave,[]),
Dir = filename:dirname(code:which(?MODULE)),
rpc:call(Node,code,add_path,[Dir]),
{ok, Pid} = rpc:call(Node,gen_fsm,start,[?MODULE,[],[]]),
ok = gen_fsm:stop(Pid),
false = rpc:call(Node,erlang,is_process_alive,[Pid]),
{'EXIT',noproc} = (catch gen_fsm:stop(Pid)),
true = test_server:stop_node(Node),
{'EXIT',{{nodedown,Node},_}} = (catch gen_fsm:stop(Pid)),
ok.
%% Registered name on remote node
stop9(_Config) ->
{ok,Node} = test_server:start_node(gen_fsm_SUITE_stop9,slave,[]),
Dir = filename:dirname(code:which(?MODULE)),
rpc:call(Node,code,add_path,[Dir]),
{ok, Pid} = rpc:call(Node,gen_fsm,start,[{local,to_stop},?MODULE,[],[]]),
ok = gen_fsm:stop({to_stop,Node}),
undefined = rpc:call(Node,erlang,whereis,[to_stop]),
false = rpc:call(Node,erlang,is_process_alive,[Pid]),
{'EXIT',noproc} = (catch gen_fsm:stop({to_stop,Node})),
true = test_server:stop_node(Node),
{'EXIT',{{nodedown,Node},_}} = (catch gen_fsm:stop({to_stop,Node})),
ok.
%% Globally registered name on remote node
stop10(_Config) ->
{ok,Node} = test_server:start_node(gen_fsm_SUITE_stop10,slave,[]),
Dir = filename:dirname(code:which(?MODULE)),
rpc:call(Node,code,add_path,[Dir]),
{ok, Pid} = rpc:call(Node,gen_fsm,start,[{global,to_stop},?MODULE,[],[]]),
global:sync(),
ok = gen_fsm:stop({global,to_stop}),
false = rpc:call(Node,erlang,is_process_alive,[Pid]),
{'EXIT',noproc} = (catch gen_fsm:stop({global,to_stop})),
true = test_server:stop_node(Node),
{'EXIT',noproc} = (catch gen_fsm:stop({global,to_stop})),
ok.
%% Check that time outs in calls work
abnormal1(Config) when is_list(Config) ->
{ok, _Pid} = gen_fsm:start({local, my_fsm}, gen_fsm_SUITE, [], []),
%% timeout call.
delayed = gen_fsm:sync_send_event(my_fsm, {delayed_answer,1}, 100),
{'EXIT',{timeout,_}} =
(catch gen_fsm:sync_send_event(my_fsm, {delayed_answer,10}, 1)),
[] = get_messages(),
ok.
%% Check that bad return values makes the fsm crash. Note that we must
%% trap exit since we must link to get the real bad_return_ error
abnormal2(Config) when is_list(Config) ->
OldFl = process_flag(trap_exit, true),
?line {ok, Pid} =
gen_fsm:start_link(gen_fsm_SUITE, [], []),
%% bad return value in the gen_fsm loop
?line {'EXIT',{{bad_return_value, badreturn},_}} =
(catch gen_fsm:sync_send_event(Pid, badreturn)),
[{'EXIT',Pid,{bad_return_value,badreturn}}] = get_messages(),
process_flag(trap_exit, OldFl),
ok.
shutdown(Config) when is_list(Config) ->
?line error_logger_forwarder:register(),
process_flag(trap_exit, true),
?line {ok,Pid0} = gen_fsm:start_link(gen_fsm_SUITE, [], []),
?line ok = do_func_test(Pid0),
?line ok = do_sync_func_test(Pid0),
?line {shutdown,reason} =
gen_fsm:sync_send_all_state_event(Pid0, stop_shutdown_reason),
receive {'EXIT',Pid0,{shutdown,reason}} -> ok end,
process_flag(trap_exit, false),
?line {'EXIT', {noproc,_}} =
(catch gen_fsm:sync_send_event(Pid0, hej)),
receive
Any ->
?line io:format("Unexpected: ~p", [Any]),
ct:fail(failed)
after 500 ->
ok
end,
ok.
sys1(Config) when is_list(Config) ->
?line {ok, Pid} =
gen_fsm:start(gen_fsm_SUITE, [], []),
?line {status, Pid, {module,gen_fsm}, _} = sys:get_status(Pid),
?line sys:suspend(Pid),
?line {'EXIT', {timeout,_}} =
(catch gen_fsm:sync_send_event(Pid, hej)),
?line sys:resume(Pid),
?line stop_it(Pid).
call_format_status(Config) when is_list(Config) ->
?line {ok, Pid} = gen_fsm:start(gen_fsm_SUITE, [], []),
?line Status = sys:get_status(Pid),
?line {status, Pid, _Mod, [_PDict, running, _, _, Data]} = Status,
?line [format_status_called | _] = lists:reverse(Data),
?line stop_it(Pid),
%% check that format_status can handle a name being an atom (pid is
%% already checked by the previous test)
?line {ok, Pid2} = gen_fsm:start({local, gfsm}, gen_fsm_SUITE, [], []),
?line Status2 = sys:get_status(gfsm),
?line {status, Pid2, _Mod, [_PDict2, running, _, _, Data2]} = Status2,
?line [format_status_called | _] = lists:reverse(Data2),
?line stop_it(Pid2),
%% check that format_status can handle a name being a term other than a
%% pid or atom
GlobalName1 = {global, "CallFormatStatus"},
?line {ok, Pid3} = gen_fsm:start(GlobalName1, gen_fsm_SUITE, [], []),
?line Status3 = sys:get_status(GlobalName1),
?line {status, Pid3, _Mod, [_PDict3, running, _, _, Data3]} = Status3,
?line [format_status_called | _] = lists:reverse(Data3),
?line stop_it(Pid3),
GlobalName2 = {global, {name, "term"}},
?line {ok, Pid4} = gen_fsm:start(GlobalName2, gen_fsm_SUITE, [], []),
?line Status4 = sys:get_status(GlobalName2),
?line {status, Pid4, _Mod, [_PDict4, running, _, _, Data4]} = Status4,
?line [format_status_called | _] = lists:reverse(Data4),
?line stop_it(Pid4),
%% check that format_status can handle a name being a term other than a
%% pid or atom
?line dummy_via:reset(),
ViaName1 = {via, dummy_via, "CallFormatStatus"},
?line {ok, Pid5} = gen_fsm:start(ViaName1, gen_fsm_SUITE, [], []),
?line Status5 = sys:get_status(ViaName1),
?line {status, Pid5, _Mod, [_PDict5, running, _, _, Data5]} = Status5,
?line [format_status_called | _] = lists:reverse(Data5),
?line stop_it(Pid5),
ViaName2 = {via, dummy_via, {name, "term"}},
?line {ok, Pid6} = gen_fsm:start(ViaName2, gen_fsm_SUITE, [], []),
?line Status6 = sys:get_status(ViaName2),
?line {status, Pid6, _Mod, [_PDict6, running, _, _, Data6]} = Status6,
?line [format_status_called | _] = lists:reverse(Data6),
?line stop_it(Pid6).
error_format_status(Config) when is_list(Config) ->
?line error_logger_forwarder:register(),
OldFl = process_flag(trap_exit, true),
StateData = "called format_status",
?line {ok, Pid} = gen_fsm:start(gen_fsm_SUITE, {state_data, StateData}, []),
%% bad return value in the gen_fsm loop
?line {'EXIT',{{bad_return_value, badreturn},_}} =
(catch gen_fsm:sync_send_event(Pid, badreturn)),
receive
{error,_GroupLeader,{Pid,
"** State machine"++_,
[Pid,{_,_,badreturn},idle,{formatted,StateData},_]}} ->
ok;
Other ->
?line io:format("Unexpected: ~p", [Other]),
ct:fail(failed)
end,
process_flag(trap_exit, OldFl),
ok.
terminate_crash_format(Config) when is_list(Config) ->
error_logger_forwarder:register(),
OldFl = process_flag(trap_exit, true),
StateData = crash_terminate,
{ok, Pid} = gen_fsm:start(gen_fsm_SUITE, {state_data, StateData}, []),
stop_it(Pid),
receive
{error,_GroupLeader,{Pid,
"** State machine"++_,
[Pid,{_,_,_},idle,{formatted, StateData},_]}} ->
ok;
Other ->
io:format("Unexpected: ~p", [Other]),
ct:fail(failed)
after 5000 ->
io:format("Timeout: expected error logger msg", []),
ct:fail(failed)
end,
process_flag(trap_exit, OldFl),
ok.
get_state(Config) when is_list(Config) ->
State = self(),
{ok, Pid} = gen_fsm:start(?MODULE, {state_data, State}, []),
{idle, State} = sys:get_state(Pid),
{idle, State} = sys:get_state(Pid, 5000),
stop_it(Pid),
%% check that get_state can handle a name being an atom (pid is
%% already checked by the previous test)
{ok, Pid2} = gen_fsm:start({local, gfsm}, gen_fsm_SUITE, {state_data, State}, []),
{idle, State} = sys:get_state(gfsm),
{idle, State} = sys:get_state(gfsm, 5000),
stop_it(Pid2),
%% check that get_state works when pid is sys suspended
{ok, Pid3} = gen_fsm:start(gen_fsm_SUITE, {state_data, State}, []),
{idle, State} = sys:get_state(Pid3),
ok = sys:suspend(Pid3),
{idle, State} = sys:get_state(Pid3, 5000),
ok = sys:resume(Pid3),
stop_it(Pid3),
ok.
replace_state(Config) when is_list(Config) ->
State = self(),
{ok, Pid} = gen_fsm:start(?MODULE, {state_data, State}, []),
{idle, State} = sys:get_state(Pid),
NState1 = "replaced",
Replace1 = fun({StateName, _}) -> {StateName, NState1} end,
{idle, NState1} = sys:replace_state(Pid, Replace1),
{idle, NState1} = sys:get_state(Pid),
NState2 = "replaced again",
Replace2 = fun({idle, _}) -> {state0, NState2} end,
{state0, NState2} = sys:replace_state(Pid, Replace2, 5000),
{state0, NState2} = sys:get_state(Pid),
%% verify no change in state if replace function crashes
Replace3 = fun(_) -> error(fail) end,
{'EXIT',{{callback_failed,
{gen_fsm,system_replace_state},{error,fail}},_}} =
(catch sys:replace_state(Pid, Replace3)),
{state0, NState2} = sys:get_state(Pid),
%% verify state replaced if process sys suspended
ok = sys:suspend(Pid),
Suffix2 = " and again",
NState3 = NState2 ++ Suffix2,
Replace4 = fun({StateName, _}) -> {StateName, NState3} end,
{state0, NState3} = sys:replace_state(Pid, Replace4),
ok = sys:resume(Pid),
{state0, NState3} = sys:get_state(Pid, 5000),
stop_it(Pid),
ok.
%% Hibernation
hibernate(Config) when is_list(Config) ->
OldFl = process_flag(trap_exit, true),
{ok, Pid0} = gen_fsm:start_link(?MODULE, hiber_now, []),
is_in_erlang_hibernate(Pid0),
stop_it(Pid0),
receive
{'EXIT',Pid0,normal} -> ok
end,
{ok, Pid} = gen_fsm:start_link(?MODULE, hiber, []),
true = ({current_function,{erlang,hibernate,3}} =/=
erlang:process_info(Pid,current_function)),
hibernating = gen_fsm:sync_send_event(Pid, hibernate_sync),
is_in_erlang_hibernate(Pid),
good_morning = gen_fsm:sync_send_event(Pid, wakeup_sync),
is_not_in_erlang_hibernate(Pid),
hibernating = gen_fsm:sync_send_event(Pid, hibernate_sync),
is_in_erlang_hibernate(Pid),
five_more = gen_fsm:sync_send_event(Pid, snooze_sync),
is_in_erlang_hibernate(Pid),
good_morning = gen_fsm:sync_send_event(Pid, wakeup_sync),
is_not_in_erlang_hibernate(Pid),
ok = gen_fsm:send_event(Pid, hibernate_async),
is_in_erlang_hibernate(Pid),
ok = gen_fsm:send_event(Pid, wakeup_async),
is_not_in_erlang_hibernate(Pid),
ok = gen_fsm:send_event(Pid, hibernate_async),
is_in_erlang_hibernate(Pid),
ok = gen_fsm:send_event(Pid, snooze_async),
is_in_erlang_hibernate(Pid),
ok = gen_fsm:send_event(Pid, wakeup_async),
is_not_in_erlang_hibernate(Pid),
Pid ! hibernate_later,
true = ({current_function,{erlang,hibernate,3}} =/=
erlang:process_info(Pid, current_function)),
is_in_erlang_hibernate(Pid),
'alive!' = gen_fsm:sync_send_event(Pid,'alive?'),
true = ({current_function,{erlang,hibernate,3}} =/=
erlang:process_info(Pid, current_function)),
Pid ! hibernate_now,
is_in_erlang_hibernate(Pid),
'alive!' = gen_fsm:sync_send_event(Pid,'alive?'),
true = ({current_function,{erlang,hibernate,3}} =/=
erlang:process_info(Pid, current_function)),
hibernating = gen_fsm:sync_send_all_state_event(Pid, hibernate_sync),
is_in_erlang_hibernate(Pid),
good_morning = gen_fsm:sync_send_all_state_event(Pid, wakeup_sync),
is_not_in_erlang_hibernate(Pid),
hibernating = gen_fsm:sync_send_all_state_event(Pid, hibernate_sync),
is_in_erlang_hibernate(Pid),
five_more = gen_fsm:sync_send_all_state_event(Pid, snooze_sync),
is_in_erlang_hibernate(Pid),
good_morning = gen_fsm:sync_send_all_state_event(Pid, wakeup_sync),
is_not_in_erlang_hibernate(Pid),
ok = gen_fsm:send_all_state_event(Pid, hibernate_async),
is_in_erlang_hibernate(Pid),
ok = gen_fsm:send_all_state_event(Pid, wakeup_async),
is_not_in_erlang_hibernate(Pid),
ok = gen_fsm:send_all_state_event(Pid, hibernate_async),
is_in_erlang_hibernate(Pid),
ok = gen_fsm:send_all_state_event(Pid, snooze_async),
is_in_erlang_hibernate(Pid),
ok = gen_fsm:send_all_state_event(Pid, wakeup_async),
is_not_in_erlang_hibernate(Pid),
hibernating = gen_fsm:sync_send_all_state_event(Pid, hibernate_sync),
is_in_erlang_hibernate(Pid),
sys:suspend(Pid),
is_in_erlang_hibernate(Pid),
sys:resume(Pid),
is_in_erlang_hibernate(Pid),
receive after 1000 -> ok end,
is_in_erlang_hibernate(Pid),
good_morning = gen_fsm:sync_send_all_state_event(Pid, wakeup_sync),
is_not_in_erlang_hibernate(Pid),
stop_it(Pid),
receive
{'EXIT',Pid,normal} -> ok
end,
[] = get_messages(),
process_flag(trap_exit, OldFl),
ok.
is_in_erlang_hibernate(Pid) ->
receive after 1 -> ok end,
is_in_erlang_hibernate_1(200, Pid).
is_in_erlang_hibernate_1(0, Pid) ->
io:format("~p\n", [erlang:process_info(Pid, current_function)]),
ct:fail(not_in_erlang_hibernate_3);
is_in_erlang_hibernate_1(N, Pid) ->
{current_function,MFA} = erlang:process_info(Pid, current_function),
case MFA of
{erlang,hibernate,3} ->
ok;
_ ->
receive after 10 -> ok end,
is_in_erlang_hibernate_1(N-1, Pid)
end.
is_not_in_erlang_hibernate(Pid) ->
receive after 1 -> ok end,
is_not_in_erlang_hibernate_1(200, Pid).
is_not_in_erlang_hibernate_1(0, Pid) ->
io:format("~p\n", [erlang:process_info(Pid, current_function)]),
ct:fail(not_in_erlang_hibernate_3);
is_not_in_erlang_hibernate_1(N, Pid) ->
{current_function,MFA} = erlang:process_info(Pid, current_function),
case MFA of
{erlang,hibernate,3} ->
receive after 10 -> ok end,
is_not_in_erlang_hibernate_1(N-1, Pid);
_ ->
ok
end.
%% Test gen_fsm:enter_loop/4,5,6.
enter_loop(Config) when is_list(Config) ->
OldFlag = process_flag(trap_exit, true),
?line dummy_via:reset(),
%% Locally registered process + {local, Name}
?line {ok, Pid1a} =
proc_lib:start_link(?MODULE, enter_loop, [local, local]),
?line yes = gen_fsm:sync_send_event(Pid1a, 'alive?'),
?line stopped = gen_fsm:sync_send_event(Pid1a, stop),
receive
{'EXIT', Pid1a, normal} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Unregistered process + {local, Name}
?line {ok, Pid1b} =
proc_lib:start_link(?MODULE, enter_loop, [anon, local]),
receive
{'EXIT', Pid1b, process_not_registered} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Globally registered process + {global, Name}
?line {ok, Pid2a} =
proc_lib:start_link(?MODULE, enter_loop, [global, global]),
?line yes = gen_fsm:sync_send_event(Pid2a, 'alive?'),
?line stopped = gen_fsm:sync_send_event(Pid2a, stop),
receive
{'EXIT', Pid2a, normal} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Unregistered process + {global, Name}
?line {ok, Pid2b} =
proc_lib:start_link(?MODULE, enter_loop, [anon, global]),
receive
{'EXIT', Pid2b, process_not_registered_globally} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Unregistered process + no name
?line {ok, Pid3} =
proc_lib:start_link(?MODULE, enter_loop, [anon, anon]),
?line yes = gen_fsm:sync_send_event(Pid3, 'alive?'),
?line stopped = gen_fsm:sync_send_event(Pid3, stop),
receive
{'EXIT', Pid3, normal} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Process not started using proc_lib
?line Pid4 =
spawn_link(gen_fsm, enter_loop, [?MODULE, [], state0, []]),
receive
{'EXIT', Pid4, process_was_not_started_by_proc_lib} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Make sure I am the parent, ie that ordering a shutdown will
%% result in the process terminating with Reason==shutdown
?line {ok, Pid5} =
proc_lib:start_link(?MODULE, enter_loop, [anon, anon]),
?line yes = gen_fsm:sync_send_event(Pid5, 'alive?'),
?line exit(Pid5, shutdown),
receive
{'EXIT', Pid5, shutdown} ->
ok
after 5000 ->
ct:fail(gen_fsm_did_not_die)
end,
%% Make sure gen_fsm:enter_loop does not accept {local,Name}
%% when it's another process than the calling one which is
%% registered under that name
register(armitage, self()),
?line {ok, Pid6a} =
proc_lib:start_link(?MODULE, enter_loop, [anon, local]),
receive
{'EXIT', Pid6a, process_not_registered} ->
ok
after 1000 ->
ct:fail(gen_fsm_started)
end,
unregister(armitage),
%% Make sure gen_fsm:enter_loop does not accept {global,Name}
%% when it's another process than the calling one which is
%% registered under that name
global:register_name(armitage, self()),
?line {ok, Pid6b} =
proc_lib:start_link(?MODULE, enter_loop, [anon, global]),
receive
{'EXIT', Pid6b, process_not_registered_globally} ->
ok
after 1000 ->
ct:fail(gen_fsm_started)
end,
global:unregister_name(armitage),
dummy_via:register_name(armitage, self()),
?line {ok, Pid6c} =
proc_lib:start_link(?MODULE, enter_loop, [anon, via]),
receive
{'EXIT', Pid6c, {process_not_registered_via, dummy_via}} ->
ok
after 1000 ->
ct:fail({gen_fsm_started, process_info(self(), messages)})
end,
dummy_via:unregister_name(armitage),
process_flag(trap_exit, OldFlag),
ok.
enter_loop(Reg1, Reg2) ->
process_flag(trap_exit, true),
case Reg1 of
local -> register(armitage, self());
global -> global:register_name(armitage, self());
via -> dummy_via:register_name(armitage, self());
anon -> ignore
end,
proc_lib:init_ack({ok, self()}),
case Reg2 of
local ->
gen_fsm:enter_loop(?MODULE, [], state0, [], {local,armitage});
global ->
gen_fsm:enter_loop(?MODULE, [], state0, [], {global,armitage});
via ->
gen_fsm:enter_loop(?MODULE, [], state0, [],
{via, dummy_via, armitage});
anon ->
gen_fsm:enter_loop(?MODULE, [], state0, [])
end.
%%
%% Functionality check
%%
wfor(Msg) ->
receive
Msg -> ok
after 5000 ->
throw(timeout)
end.
stop_it(FSM) ->
?line stopped = gen_fsm:sync_send_all_state_event(FSM, stop),
?line {'EXIT',_} = (catch gen_fsm:sync_send_event(FSM, hej)),
ok.
do_func_test(FSM) ->
ok = gen_fsm:send_all_state_event(FSM, {'alive?', self()}),
wfor(yes),
ok = do_connect(FSM),
ok = gen_fsm:send_all_state_event(FSM, {'alive?', self()}),
wfor(yes),
_ = [do_msg(FSM) || _ <- lists:seq(1, 3)],
ok = gen_fsm:send_all_state_event(FSM, {'alive?', self()}),
wfor(yes),
ok = do_disconnect(FSM),
ok = gen_fsm:send_all_state_event(FSM, {'alive?', self()}),
wfor(yes),
ok.
do_connect(FSM) ->
check_state(FSM, idle),
gen_fsm:send_event(FSM, {connect, self()}),
wfor(accept),
check_state(FSM, wfor_conf),
gen_fsm:send_event(FSM, confirmation),
check_state(FSM, connected),
ok.
do_msg(FSM) ->
check_state(FSM, connected),
R = make_ref(),
ok = gen_fsm:send_event(FSM, {msg, R, self(), hej_pa_dig_quasimodo}),
wfor({ak, R}).
do_disconnect(FSM) ->
ok = gen_fsm:send_event(FSM, disconnect),
check_state(FSM, idle).
check_state(FSM, State) ->
case gen_fsm:sync_send_all_state_event(FSM, {get, self()}) of
{state, State, _} -> ok
end.
do_sync_func_test(FSM) ->
yes = gen_fsm:sync_send_all_state_event(FSM, 'alive?'),
ok = do_sync_connect(FSM),
yes = gen_fsm:sync_send_all_state_event(FSM, 'alive?'),
_ = [do_sync_msg(FSM) || _ <- lists:seq(1, 3)],
yes = gen_fsm:sync_send_all_state_event(FSM, 'alive?'),
ok = do_sync_disconnect(FSM),
yes = gen_fsm:sync_send_all_state_event(FSM, 'alive?'),
check_state(FSM, idle),
ok = gen_fsm:sync_send_event(FSM, {timeout,200}),
yes = gen_fsm:sync_send_all_state_event(FSM, 'alive?'),
check_state(FSM, idle),
ok.
do_sync_connect(FSM) ->
check_state(FSM, idle),
accept = gen_fsm:sync_send_event(FSM, {connect, self()}),
check_state(FSM, wfor_conf),
yes = gen_fsm:sync_send_event(FSM, confirmation),
check_state(FSM, connected),
ok.
do_sync_msg(FSM) ->
check_state(FSM, connected),
R = make_ref(),
Res = gen_fsm:sync_send_event(FSM, {msg, R, self(), hej_pa_dig_quasimodo}),
if Res == {ak, R} ->
ok
end.
do_sync_disconnect(FSM) ->
yes = gen_fsm:sync_send_event(FSM, disconnect),
check_state(FSM, idle).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% The Finite State Machine
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
init(ignore) ->
ignore;
init(stop) ->
{stop, stopped};
init(stop_shutdown) ->
{stop, shutdown};
init(sleep) ->
ct:sleep(1000),
{ok, idle, data};
init({timeout, T}) ->
{ok, idle, state, T};
init(hiber) ->
{ok, hiber_idle, []};
init(hiber_now) ->
{ok, hiber_idle, [], hibernate};
init({state_data, StateData}) ->
{ok, idle, StateData};
init(_) ->
{ok, idle, state_data}.
terminate(_, _State, crash_terminate) ->
exit({crash, terminate});
terminate({From, stopped}, State, _Data) ->
From ! {self(), {stopped, State}},
ok;
terminate(_Reason, _State, _Data) ->
ok.
idle({connect, Pid}, Data) ->
Pid ! accept,
{next_state, wfor_conf, Data};
idle(badreturn, _Data) ->
badreturn;
idle(_, Data) ->
{next_state, idle, Data}.
idle({connect, _Pid}, _From, Data) ->
{reply, accept, wfor_conf, Data};
idle({delayed_answer, T}, _From, Data) ->
ct:sleep(T),
{reply, delayed, idle, Data};
idle(badreturn, _From, _Data) ->
badreturn;
idle({timeout,Time}, From, _Data) ->
gen_fsm:send_event_after(Time, {timeout,Time}),
{next_state, timeout, From};
idle(_, _From, Data) ->
{reply, 'eh?', idle, Data}.
timeout({timeout,Time}, From) ->
Ref = gen_fsm:start_timer(Time, {timeout,Time}),
{next_state, timeout, {From,Ref}};
timeout({timeout,Ref,{timeout,Time}}, {From,Ref}) ->
Ref2 = gen_fsm:start_timer(Time, ok),
Cref = gen_fsm:start_timer(Time, cancel),
Time4 = Time*4,
receive after Time4 -> ok end,
gen_fsm:cancel_timer(Cref),
{next_state, timeout, {From,Ref2}};
timeout({timeout,Ref2,ok},{From,Ref2}) ->
gen_fsm:reply(From, ok),
{next_state, idle, state}.
wfor_conf(confirmation, Data) ->
{next_state, connected, Data};
wfor_conf(_, Data) ->
{next_state, idle, Data}.
wfor_conf(confirmation, _From, Data) ->
{reply, yes, connected, Data};
wfor_conf(_, _From, Data) ->
{reply, 'eh?', idle, Data}.
connected({msg, Ref, From, _Msg}, Data) ->
From ! {ak, Ref},
{next_state, connected, Data};
connected(disconnect, Data) ->
{next_state, idle, Data};
connected(_, Data) ->
{next_state, connected, Data}.
connected({msg, Ref, _From, _Msg}, _, Data) ->
{reply, {ak, Ref}, connected, Data};
connected(disconnect, _From, Data) ->
{reply, yes, idle, Data};
connected(_, _, Data) ->
{reply, 'eh?', connected, Data}.
state0('alive?', _From, Data) ->
{reply, yes, state0, Data};
state0(stop, _From, Data) ->
{stop, normal, stopped, Data}.
hiber_idle('alive?', _From, Data) ->
{reply, 'alive!', hiber_idle, Data};
hiber_idle(hibernate_sync, _From, Data) ->
{reply, hibernating, hiber_wakeup, Data,hibernate}.
hiber_idle(timeout, hibernate_me) ->
%% Arrive here from handle_info(hibernate_later,...)
{next_state, hiber_idle, [], hibernate};
hiber_idle(hibernate_async, Data) ->
{next_state,hiber_wakeup, Data, hibernate}.
hiber_wakeup(wakeup_sync,_From,Data) ->
{reply,good_morning,hiber_idle,Data};
hiber_wakeup(snooze_sync,_From,Data) ->
{reply,five_more,hiber_wakeup,Data,hibernate}.
hiber_wakeup(wakeup_async,Data) ->
{next_state,hiber_idle,Data};
hiber_wakeup(snooze_async,Data) ->
{next_state,hiber_wakeup,Data,hibernate}.
handle_info(hibernate_now, _SName, _State) ->
%% Arrive here from by direct ! from testcase
{next_state, hiber_idle, [], hibernate};
handle_info(hibernate_later, _SName, _State) ->
{next_state, hiber_idle, hibernate_me, 1000};
handle_info(Info, _State, Data) ->
{stop, {unexpected,Info}, Data}.
handle_event(hibernate_async, hiber_idle, Data) ->
{next_state,hiber_wakeup, Data, hibernate};
handle_event(wakeup_async,hiber_wakeup,Data) ->
{next_state,hiber_idle,Data};
handle_event(snooze_async,hiber_wakeup,Data) ->
{next_state,hiber_wakeup,Data,hibernate};
handle_event({get, Pid}, State, Data) ->
Pid ! {state, State, Data},
{next_state, State, Data};
handle_event(stop, _State, Data) ->
{stop, normal, Data};
handle_event(stop_shutdown, _State, Data) ->
{stop, shutdown, Data};
handle_event(stop_shutdown_reason, _State, Data) ->
{stop, shutdown, Data};
handle_event({'alive?', Pid}, State, Data) ->
Pid ! yes,
{next_state, State, Data}.
handle_sync_event(hibernate_sync, _From, hiber_idle, Data) ->
{reply, hibernating, hiber_wakeup, Data, hibernate};
handle_sync_event(wakeup_sync,_From,hiber_wakeup, Data) ->
{reply,good_morning,hiber_idle,Data};
handle_sync_event(snooze_sync,_From,hiber_wakeup,Data) ->
{reply,five_more,hiber_wakeup,Data,hibernate};
handle_sync_event('alive?', _From, State, Data) ->
{reply, yes, State, Data};
handle_sync_event(stop, _From, _State, Data) ->
{stop, normal, stopped, Data};
handle_sync_event(stop_shutdown, _From, _State, Data) ->
{stop, shutdown, shutdown_stopped, Data};
handle_sync_event(stop_shutdown_reason, _From, _State, Data) ->
{stop, {shutdown,reason}, {shutdown,reason}, Data};
handle_sync_event({get, _Pid}, _From, State, Data) ->
{reply, {state, State, Data}, State, Data}.
format_status(terminate, [_Pdict, StateData]) ->
{formatted, StateData};
format_status(normal, [_Pdict, _StateData]) ->
[format_status_called].
get_messages() ->
receive
Msg -> [Msg|get_messages()]
after 1 -> []
end.
