emqx4.3/test/emqttd_keepalive_tests.erl

%%%-----------------------------------------------------------------------------
%%% @Copyright (C) 2012-2015, Feng Lee <feng@emqtt.io>
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%%% furnished to do so, subject to the following conditions:
%%%
%%% The above copyright notice and this permission notice shall be included in all
%%% copies or substantial portions of the Software.
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%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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-module(emqttd_keepalive_tests).

-ifdef(TEST).

-include_lib("eunit/include/eunit.hrl").

keepalive_test() ->
    KA = emqttd_keepalive:start(fun() -> {ok, 1} end, 1, {keepalive, timeout}),
    ?assertEqual([resumed, timeout], lists:reverse(loop(KA, []))).

loop(KA, Acc) ->
    receive
        {keepalive, timeout} ->
            case emqttd_keepalive:check(KA) of
                {ok, KA1} -> loop(KA1, [resumed | Acc]);
                {error, timeout} -> [timeout | Acc]
            end
        after 4000 ->
                Acc
    end.

-endif.