%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1999-2010. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% 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.
%%
%% %CopyrightEnd%
%%
%%
-module(fun_SUITE).
-export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
init_per_testcase/2,end_per_testcase/2,
init_per_suite/1,end_per_suite/1,
good_call/1,bad_apply/1,bad_fun_call/1,badarity/1,
ext_badarity/1,otp_6061/1]).
-export([nothing/0]).
-include_lib("test_server/include/test_server.hrl").
suite() -> [{suite_callbacks,[ts_install_scb]}].
all() ->
[cases()].
groups() ->
[].
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
cases() ->
[good_call, bad_apply, bad_fun_call, badarity,
ext_badarity, otp_6061].
init_per_testcase(_Case, Config) ->
test_lib:interpret(?MODULE),
Dog = test_server:timetrap(?t:minutes(1)),
[{watchdog,Dog}|Config].
end_per_testcase(_Case, Config) ->
Dog = ?config(watchdog, Config),
?t:timetrap_cancel(Dog),
ok.
init_per_suite(Config) when is_list(Config) ->
?line test_lib:interpret(?MODULE),
?line true = lists:member(?MODULE, int:interpreted()),
ok.
end_per_suite(Config) when is_list(Config) ->
ok.
good_call(Config) when is_list(Config) ->
?line F = fun() -> ok end,
?line ok = F(),
?line FF = fun ?MODULE:nothing/0,
?line ok = FF(),
ok.
bad_apply(doc) ->
"Test that the correct EXIT code is returned for all types of bad funs.";
bad_apply(suite) -> [];
bad_apply(Config) when is_list(Config) ->
?line bad_apply_fc(42, [0]),
?line bad_apply_fc(xx, [1]),
?line bad_apply_fc({}, [2]),
?line bad_apply_fc({1}, [3]),
?line bad_apply_fc({1,2,3}, [4]),
?line bad_apply_fc({1,2,3}, [5]),
?line bad_apply_fc({1,2,3,4}, [6]),
?line bad_apply_fc({1,2,3,4,5,6}, [7]),
?line bad_apply_fc({1,2,3,4,5}, [8]),
?line bad_apply_badarg({1,2}, [9]),
ok.
bad_apply_fc(Fun, Args) ->
Res = (catch apply(Fun, Args)),
erlang:garbage_collect(),
erlang:yield(),
case Res of
{'EXIT',{{badfun,Fun},_Where}} ->
ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res]);
Other ->
ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res]),
?t:fail({bad_result,Other})
end.
bad_apply_badarg(Fun, Args) ->
Res = (catch apply(Fun, Args)),
erlang:garbage_collect(),
erlang:yield(),
case Res of
{'EXIT',{{badfun,Fun},_Where}} ->
ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res]);
Other ->
ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res]),
?t:fail({bad_result, Other})
end.
bad_fun_call(doc) ->
"Try directly calling bad funs.";
bad_fun_call(suite) -> [];
bad_fun_call(Config) when is_list(Config) ->
?line bad_call_fc(42),
?line bad_call_fc(xx),
?line bad_call_fc({}),
?line bad_call_fc({1}),
?line bad_call_fc({1,2,3}),
?line bad_call_fc({1,2,3}),
?line bad_call_fc({1,2,3,4}),
?line bad_call_fc({1,2,3,4,5,6}),
?line bad_call_fc({1,2,3,4,5}),
?line bad_call_fc({1,2}),
ok.
bad_call_fc(Fun) ->
Args = [some,stupid,args],
Res = (catch Fun(Args)),
case Res of
{'EXIT',{{badfun,Fun},_Where}} ->
ok = io:format("~p(~p) -> ~p\n", [Fun,Args,Res]);
Other ->
ok = io:format("~p(~p) -> ~p\n", [Fun,Args,Res]),
?t:fail({bad_result,Other})
end.
%% Call and apply valid external funs with wrong number of arguments.
badarity(Config) when is_list(Config) ->
?line Fun = fun() -> ok end,
?line Stupid = {stupid,arguments},
?line Args = [some,{stupid,arguments},here],
%% Simple call.
?line Res = (catch Fun(some, Stupid, here)),
erlang:garbage_collect(),
erlang:yield(),
case Res of
{'EXIT',{{badarity,{Fun,Args}},[_|_]}} ->
?line ok = io:format("~p(~p) -> ~p\n", [Fun,Args,Res]);
_ ->
?line ok = io:format("~p(~p) -> ~p\n", [Fun,Args,Res]),
?line ?t:fail({bad_result,Res})
end,
%% Apply.
?line Res2 = (catch apply(Fun, Args)),
erlang:garbage_collect(),
erlang:yield(),
case Res2 of
{'EXIT',{{badarity,{Fun,Args}},[_|_]}} ->
?line ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res2]);
_ ->
?line ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res2]),
?line ?t:fail({bad_result,Res2})
end,
ok.
%% Call and apply valid external funs with wrong number of arguments.
ext_badarity(Config) when is_list(Config) ->
?line Fun = fun ?MODULE:nothing/0,
?line Stupid = {stupid,arguments},
?line Args = [some,{stupid,arguments},here],
%% Simple call.
?line Res = (catch Fun(some, Stupid, here)),
erlang:garbage_collect(),
erlang:yield(),
case Res of
{'EXIT',{{badarity,{Fun,Args}},_}} ->
?line ok = io:format("~p(~p) -> ~p\n", [Fun,Args,Res]);
_ ->
?line ok = io:format("~p(~p) -> ~p\n", [Fun,Args,Res]),
?line ?t:fail({bad_result,Res})
end,
%% Apply.
?line Res2 = (catch apply(Fun, Args)),
erlang:garbage_collect(),
erlang:yield(),
case Res2 of
{'EXIT',{{badarity,{Fun,Args}},_}} ->
?line ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res2]);
_ ->
?line ok = io:format("apply(~p, ~p) -> ~p\n", [Fun,Args,Res2]),
?line ?t:fail({bad_result,Res2})
end,
ok.
nothing() ->
ok.
otp_6061(suite) ->
[];
otp_6061(doc) ->
["Test handling of fun expression referring to uninterpreted code"];
otp_6061(Config) when is_list(Config) ->
?line OrigFlag = process_flag(trap_exit, true),
?line Self = self(),
?line Pid = spawn_link(fun() -> test_otp_6061(Self) end),
receive
working ->
?line ok;
not_working ->
?line ?t:fail(not_working);
{'EXIT', Pid, Reason} ->
?line ?t:fail({crash, Reason})
after
5000 ->
?line ?t:fail(timeout)
end,
?line process_flag(trap_exit, OrigFlag),
ok.
test_otp_6061(Starter) ->
Passes = [2],
PassesF = [fun() -> Starter ! not_working end,
fun() -> Starter ! working end,
fun() -> Starter ! not_working end],
lists:foreach(fun(P)->(lists:nth(P,PassesF))() end,Passes).
