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-rw-r--r--lib/stdlib/test/gen_server_SUITE.erl111
1 files changed, 99 insertions, 12 deletions
diff --git a/lib/stdlib/test/gen_server_SUITE.erl b/lib/stdlib/test/gen_server_SUITE.erl
index 7d9561db24..e29195e895 100644
--- a/lib/stdlib/test/gen_server_SUITE.erl
+++ b/lib/stdlib/test/gen_server_SUITE.erl
@@ -27,7 +27,7 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2]).
-export([start/1, crash/1, call/1, cast/1, cast_fast/1,
- info/1, abcast/1, multicall/1, multicall_down/1,
+ continue/1, info/1, abcast/1, multicall/1, multicall_down/1,
call_remote1/1, call_remote2/1, call_remote3/1,
call_remote_n1/1, call_remote_n2/1, call_remote_n3/1, spec_init/1,
spec_init_local_registered_parent/1,
@@ -37,7 +37,8 @@
get_state/1, replace_state/1, call_with_huge_message_queue/1,
undef_handle_call/1, undef_handle_cast/1, undef_handle_info/1,
undef_init/1, undef_code_change/1, undef_terminate1/1,
- undef_terminate2/1, undef_in_terminate/1, undef_in_handle_info/1
+ undef_terminate2/1, undef_in_terminate/1, undef_in_handle_info/1,
+ undef_handle_continue/1
]).
-export([stop1/1, stop2/1, stop3/1, stop4/1, stop5/1, stop6/1, stop7/1,
@@ -52,7 +53,7 @@
%% The gen_server behaviour
--export([init/1, handle_call/3, handle_cast/2,
+-export([init/1, handle_call/3, handle_cast/2, handle_continue/2,
handle_info/2, code_change/3, terminate/2, format_status/2]).
suite() ->
@@ -61,7 +62,7 @@ suite() ->
all() ->
[start, {group,stop}, crash, call, cast, cast_fast, info, abcast,
- multicall, multicall_down, call_remote1, call_remote2,
+ continue, multicall, multicall_down, call_remote1, call_remote2,
call_remote3, call_remote_n1, call_remote_n2,
call_remote_n3, spec_init,
spec_init_local_registered_parent,
@@ -76,7 +77,7 @@ groups() ->
[{stop, [],
[stop1, stop2, stop3, stop4, stop5, stop6, stop7, stop8, stop9, stop10]},
{undef_callbacks, [],
- [undef_handle_call, undef_handle_cast, undef_handle_info,
+ [undef_handle_call, undef_handle_cast, undef_handle_info, undef_handle_continue,
undef_init, undef_code_change, undef_terminate1, undef_terminate2]}].
@@ -458,6 +459,47 @@ call(Config) when is_list(Config) ->
ok.
%% --------------------------------------
+%% Test handle_continue.
+%% --------------------------------------
+
+continue(Config) when is_list(Config) ->
+ {ok, Pid} = gen_server:start_link(gen_server_SUITE, {continue, self()}, []),
+ [{Pid, continue}, {Pid, after_continue}] = read_replies(Pid),
+
+ gen_server:call(Pid, {continue_reply, self()}),
+ [{Pid, continue}, {Pid, after_continue}] = read_replies(Pid),
+
+ gen_server:call(Pid, {continue_noreply, self()}),
+ [{Pid, continue}, {Pid, after_continue}] = read_replies(Pid),
+
+ gen_server:cast(Pid, {continue_noreply, self()}),
+ [{Pid, continue}, {Pid, after_continue}] = read_replies(Pid),
+
+ Pid ! {continue_noreply, self()},
+ [{Pid, continue}, {Pid, after_continue}] = read_replies(Pid),
+
+ Pid ! {continue_continue, self()},
+ [{Pid, before_continue}, {Pid, continue}, {Pid, after_continue}] = read_replies(Pid),
+
+ Ref = monitor(process, Pid),
+ Pid ! continue_stop,
+ verify_down_reason(Ref, Pid, normal).
+
+read_replies(Pid) ->
+ receive
+ {Pid, ack} -> read_replies()
+ after
+ 1000 -> ct:fail({continue, ack})
+ end.
+
+read_replies() ->
+ receive
+ Msg -> [Msg | read_replies()]
+ after
+ 0 -> []
+ end.
+
+%% --------------------------------------
%% Test call to nonexisting processes on remote nodes
%% --------------------------------------
@@ -1346,7 +1388,7 @@ echo_loop() ->
%% Test the default implementation of terminate if the callback module
%% does not export it
undef_terminate1(Config) when is_list(Config) ->
- {ok, Server} = gen_server:start(oc_server, [], []),
+ {ok, Server} = oc_server:start(),
MRef = monitor(process, Server),
ok = gen_server:stop(Server),
ok = verify_down_reason(MRef, Server, normal).
@@ -1354,7 +1396,7 @@ undef_terminate1(Config) when is_list(Config) ->
%% Test the default implementation of terminate if the callback module
%% does not export it
undef_terminate2(Config) when is_list(Config) ->
- {ok, Server} = gen_server:start(oc_server, [], []),
+ {ok, Server} = oc_server:start(),
MRef = monitor(process, Server),
ok = gen_server:stop(Server, {error, test}, infinity),
ok = verify_down_reason(MRef, Server, {error, test}).
@@ -1377,7 +1419,7 @@ undef_init(_Config) ->
%% The upgrade should fail if code_change is expected in the callback module
%% but not exported, but the server should continue with the old code
undef_code_change(Config) when is_list(Config) ->
- {ok, Server} = gen_server:start(oc_server, [], []),
+ {ok, Server} = oc_server:start(),
{error, {'EXIT', {undef, [{oc_server, code_change, [_, _, _], _}|_]}}}
= fake_upgrade(Server, ?MODULE),
true = is_process_alive(Server).
@@ -1385,7 +1427,7 @@ undef_code_change(Config) when is_list(Config) ->
%% The server should crash if the handle_call callback is
%% not exported in the callback module
undef_handle_call(_Config) ->
- {ok, Server} = gen_server:start(oc_server, [], []),
+ {ok, Server} = oc_server:start(),
try
gen_server:call(Server, call_msg),
ct:fail(should_crash)
@@ -1397,17 +1439,25 @@ undef_handle_call(_Config) ->
%% The server should crash if the handle_cast callback is
%% not exported in the callback module
undef_handle_cast(_Config) ->
- {ok, Server} = gen_server:start(oc_server, [], []),
+ {ok, Server} = oc_server:start(),
MRef = monitor(process, Server),
gen_server:cast(Server, cast_msg),
verify_undef_down(MRef, Server, oc_server, handle_cast),
ok.
+%% The server should crash if the handle_continue callback is
+%% not exported in the callback module
+undef_handle_continue(_Config) ->
+ {ok, Server} = oc_server:start(continue),
+ MRef = monitor(process, Server),
+ verify_undef_down(MRef, Server, oc_server, handle_continue),
+ ok.
+
%% The server should log but not crash if the handle_info callback is
%% calling an undefined function
undef_handle_info(Config) when is_list(Config) ->
error_logger_forwarder:register(),
- {ok, Server} = gen_server:start(oc_server, [], []),
+ {ok, Server} = oc_server:start(),
Server ! hej,
wait_until_processed(Server, hej, 10),
true = is_process_alive(Server),
@@ -1570,8 +1620,11 @@ init(hibernate) ->
init(sleep) ->
ct:sleep(1000),
{ok, []};
+init({continue, Pid}) ->
+ self() ! {after_continue, Pid},
+ {ok, [], {continue, {message, Pid}}};
init({state,State}) ->
- {ok, State}.
+ {ok,State}.
handle_call(started_p, _From, State) ->
io:format("FROZ"),
@@ -1604,6 +1657,12 @@ handle_call(shutdown_reason, _From, _State) ->
handle_call({call_undef_fun, Mod, Fun}, _From, State) ->
Mod:Fun(),
{reply, ok, State};
+handle_call({continue_reply, Pid}, _From, State) ->
+ self() ! {after_continue, Pid},
+ {reply, ok, State, {continue, {message, Pid}}};
+handle_call({continue_noreply, Pid}, From, State) ->
+ self() ! {after_continue, Pid},
+ {noreply, State, {continue, {message, Pid, From}}};
handle_call(stop_shutdown_reason, _From, State) ->
{stop,{shutdown,stop_reason},State}.
@@ -1620,6 +1679,9 @@ handle_cast(hibernate_later, _State) ->
handle_cast({call_undef_fun, Mod, Fun}, State) ->
Mod:Fun(),
{noreply, State};
+handle_cast({continue_noreply, Pid}, State) ->
+ self() ! {after_continue, Pid},
+ {noreply, State, {continue, {message, Pid}}};
handle_cast({From, stop}, State) ->
io:format("BAZ"),
{stop, {From,stopped}, State}.
@@ -1657,9 +1719,34 @@ handle_info(continue, From) ->
{noreply, []};
handle_info({From, stop}, State) ->
{stop, {From,stopped_info}, State};
+handle_info({after_continue, Pid}, State) ->
+ Pid ! {self(), after_continue},
+ Pid ! {self(), ack},
+ {noreply, State};
+handle_info({continue_noreply, Pid}, State) ->
+ self() ! {after_continue, Pid},
+ {noreply, State, {continue, {message, Pid}}};
+handle_info({continue_continue, Pid}, State) ->
+ {noreply, State, {continue, {continue, Pid}}};
+handle_info(continue_stop, State) ->
+ {noreply, State, {continue, stop}};
handle_info(_Info, State) ->
{noreply, State}.
+handle_continue({continue, Pid}, State) ->
+ Pid ! {self(), before_continue},
+ self() ! {after_continue, Pid},
+ {noreply, State, {continue, {message, Pid}}};
+handle_continue(stop, State) ->
+ {stop, normal, State};
+handle_continue({message, Pid}, State) ->
+ Pid ! {self(), continue},
+ {noreply, State};
+handle_continue({message, Pid, From}, State) ->
+ Pid ! {self(), continue},
+ gen_server:reply(From, ok),
+ {noreply, State}.
+
code_change(_OldVsn,
{new, {undef_in_code_change, {Mod, Fun}}} = State,
_Extra) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 14:11:36 +0000