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-rw-r--r--lib/stdlib/test/dummy1_h.erl5
-rw-r--r--lib/stdlib/test/gen_event_SUITE.erl59
2 files changed, 60 insertions, 4 deletions
diff --git a/lib/stdlib/test/dummy1_h.erl b/lib/stdlib/test/dummy1_h.erl
index 4377d774a3..8bbe729646 100644
--- a/lib/stdlib/test/dummy1_h.erl
+++ b/lib/stdlib/test/dummy1_h.erl
@@ -21,7 +21,7 @@
%% Test event handler for gen_event_SUITE.erl
-export([init/1, handle_event/2, handle_call/2, handle_info/2,
- terminate/2]).
+ terminate/2, format_status/2]).
init(make_error) ->
{error, my_error};
@@ -67,4 +67,5 @@ terminate(remove_handler, Parent) ->
terminate(_Reason, _State) ->
ok.
-
+format_status(_Opt, [_PDict, _State]) ->
+ "dummy1_h handler state".
diff --git a/lib/stdlib/test/gen_event_SUITE.erl b/lib/stdlib/test/gen_event_SUITE.erl
index 8cbffaca56..4f7de451e3 100644
--- a/lib/stdlib/test/gen_event_SUITE.erl
+++ b/lib/stdlib/test/gen_event_SUITE.erl
@@ -23,9 +23,11 @@
-export([all/1]).
-export([start/1, test_all/1, add_handler/1, add_sup_handler/1,
delete_handler/1, swap_handler/1, swap_sup_handler/1,
- notify/1, sync_notify/1, call/1, info/1, hibernate/1]).
+ notify/1, sync_notify/1, call/1, info/1, hibernate/1,
+ call_format_status/1, error_format_status/1]).
-all(suite) -> {req, [stdlib], [start, test_all, hibernate]}.
+all(suite) -> {req, [stdlib], [start, test_all, hibernate,
+ call_format_status, error_format_status]}.
%% --------------------------------------
%% Start an event manager.
@@ -844,3 +846,56 @@ info(Config) when is_list(Config) ->
?line ok = gen_event:stop(my_dummy_handler),
ok.
+
+call_format_status(suite) ->
+ [];
+call_format_status(doc) ->
+ ["Test that sys:get_status/1,2 calls format_status/2"];
+call_format_status(Config) when is_list(Config) ->
+ ?line {ok, Pid} = gen_event:start({local, my_dummy_handler}),
+ %% State here intentionally differs from what we expect from format_status
+ State = self(),
+ FmtState = "dummy1_h handler state",
+ ?line ok = gen_event:add_handler(my_dummy_handler, dummy1_h, [State]),
+ ?line Status1 = sys:get_status(Pid),
+ ?line Status2 = sys:get_status(Pid, 5000),
+ ?line ok = gen_event:stop(Pid),
+ ?line {status, Pid, _, [_, _, Pid, [], Data1]} = Status1,
+ ?line HandlerInfo1 = proplists:get_value(items, Data1),
+ ?line {"Installed handlers", [{_,dummy1_h,_,FmtState,_}]} = HandlerInfo1,
+ ?line {status, Pid, _, [_, _, Pid, [], Data2]} = Status2,
+ ?line HandlerInfo2 = proplists:get_value(items, Data2),
+ ?line {"Installed handlers", [{_,dummy1_h,_,FmtState,_}]} = HandlerInfo2,
+ ok.
+
+error_format_status(suite) ->
+ [];
+error_format_status(doc) ->
+ ["Test that a handler error calls format_status/2"];
+error_format_status(Config) when is_list(Config) ->
+ ?line error_logger_forwarder:register(),
+ OldFl = process_flag(trap_exit, true),
+ State = self(),
+ ?line {ok, Pid} = gen_event:start({local, my_dummy_handler}),
+ ?line ok = gen_event:add_sup_handler(my_dummy_handler, dummy1_h, [State]),
+ ?line ok = gen_event:notify(my_dummy_handler, do_crash),
+ ?line receive
+ {gen_event_EXIT,dummy1_h,{'EXIT',_}} -> ok
+ after 5000 ->
+ ?t:fail(exit_gen_event)
+ end,
+ FmtState = "dummy1_h handler state",
+ receive
+ {error,_GroupLeader, {Pid,
+ "** gen_event handler"++_,
+ [dummy1_h,my_dummy_handler,do_crash,
+ FmtState, _]}} ->
+ ok;
+ Other ->
+ ?line io:format("Unexpected: ~p", [Other]),
+ ?line ?t:fail()
+ end,
+ ?t:messages_get(),
+ ?line ok = gen_event:stop(Pid),
+ process_flag(trap_exit, OldFl),
+ ok.