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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2011. 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%
+%%
+
+%%
+%% Tests of the server implemented by diameter_sync.erl.
+%%
+
+-module(diameter_sync_SUITE).
+
+-export([suite/0,
+ all/0,
+ init_per_suite/1,
+ end_per_suite/1]).
+
+%% testcases
+-export([scramble/1,
+ call/1,
+ cast/1,
+ timeout/1,
+ flush/1]).
+
+-define(sync, diameter_sync).
+-define(util, diameter_util).
+
+-define(TIMEOUT, infinity).
+
+%% ===========================================================================
+
+suite() ->
+ [{timetrap, {seconds, 10}}].
+
+all() ->
+ [scramble | tc()].
+
+tc() ->
+ [call,
+ cast,
+ timeout,
+ flush].
+
+init_per_suite(Config) ->
+ ok = diameter:start(),
+ Config.
+
+end_per_suite(_Config) ->
+ ok = diameter:stop().
+
+%% ===========================================================================
+
+scramble(Config) ->
+ [] = ?util:run(?util:scramble([{?MODULE, [F, Config]} || F <- tc()])).
+
+call(_) ->
+ Ref = make_ref(),
+ Q = {q, Ref},
+ F = fun() -> Ref end,
+ Ref = ?sync:call(Q, F, infinity, ?TIMEOUT),
+ Ref = ?sync:call(Q, F, 0, infinity),
+ Ref = call(Q, F),
+ Ref = call(Q, {fun(_) -> Ref end, x}),
+ timeout = call(Q, fun() -> exit(unexpected) end),
+ {_,_,_} = call(Q, {erlang, now, []}),
+ {_,_,_} = call(Q, [fun erlang:now/0]).
+
+cast(_) ->
+ Ref = make_ref(),
+ Q = {q, Ref},
+ false = ?sync:carp(Q),
+ [] = ?sync:pids(Q),
+ %% Queue a request that blocks until we send it Ref and another
+ %% that exits with Ref.
+ ok = cast(Q, fun() -> receive Ref -> ok end end),
+ ok = cast(Q, fun() -> exit(Ref) end),
+ [_,Pid] = ?sync:pids(Q),
+ %% Ensure some expected truths ...
+ 2 = ?sync:pending(Q),
+ true = 2 =< ?sync:pending(),
+ true = lists:member(Q, ?sync:queues()),
+ %% ... and that the max number of requests is respected.
+ rejected = ?sync:call(Q, {erlang, now, []}, 1, ?TIMEOUT),
+ rejected = ?sync:cast(Q, {erlang, now, []}, 1, ?TIMEOUT),
+ %% Monitor on the identifiable request and see that exits when we
+ %% let the blocking request finish.
+ MRef = erlang:monitor(process, Pid),
+ {value, P} = ?sync:carp(Q),
+ P ! Ref,
+ Ref = receive
+ {'DOWN', MRef, process, _, Reason} ->
+ Reason
+ after ?TIMEOUT ->
+ false
+ end.
+
+timeout(_) ->
+ Q = make_ref(),
+ ok = ?sync:cast(Q, {timer, sleep, [2000]}, infinity, 2000),
+ timeout = ?sync:call(Q, fun() -> ok end, infinity, 1000).
+
+flush(_) ->
+ Q = make_ref(),
+ F = {timer, sleep, [2000]},
+ ok = cast(Q, F),
+ ok = cast(Q, F),
+ 1 = ?sync:flush(Q).
+
+%% ===========================================================================
+
+call(Q, Req) ->
+ sync(call, Q, Req).
+
+cast(Q, Req) ->
+ sync(cast, Q, Req).
+
+sync(F, Q, Req) ->
+ ?sync:F(Q, Req, infinity, infinity).