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62 lines
2.0 KiB
Erlang
62 lines
2.0 KiB
Erlang
-module(rpc_output).
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-export([confirm/0]).
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-include_lib("eunit/include/eunit.hrl").
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-compile([{parse_transform, lager_transform}]).
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-behavior(gen_event).
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%% gen_event callbacks
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-export([init/1,
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handle_call/2,
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handle_event/2,
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handle_info/2,
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terminate/2,
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code_change/3]).
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confirm() ->
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gen_event:add_handler(lager_event, ?MODULE, []),
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io:put_chars("This is an io:put_chars/1 call"),
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io:format("This is an io:format/1 call"),
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io:format("This is an io:format/~w call", [2]),
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lager:info("This is a lager message"),
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{ok, {LogId, Failures}} = gen_event:delete_handler(lager_event, ?MODULE, []),
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?assertEqual(5, LogId),
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?assertEqual([], Failures).
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-record(state, {level = debug, verbose = true, log_id = 1, failures = []}).
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init(_) -> {ok, #state{}}.
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handle_event({log, _Dest, _Level, {_Date, _Time}, [_LevelStr, _Location, Message]},
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State) ->
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check_log_message(lists:flatten(Message), State);
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handle_event({log, _Level, {_Date, _Time}, [_LevelStr, _Location, Message]}, State) ->
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check_log_message(lists:flatten(Message), State);
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handle_event(_, State) ->
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{ok, State}.
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handle_call(_, State) ->
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{ok, State}.
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handle_info(_, State) ->
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{ok, State}.
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code_change(_OldVsn, State, _Extra) ->
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{ok, State}.
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terminate(_Reason, #state{log_id = LogId, failures = Failures}) ->
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{ok, {LogId, Failures}}.
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check_log_message(Message, #state{log_id = LogId, failures = Failures} = State) ->
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try
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case LogId of
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1 -> ?assertEqual(Message, "This is an io:put_chars/1 call");
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2 -> ?assertEqual(Message, "This is an io:format/1 call");
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3 -> ?assertEqual(Message, "This is an io:format/2 call");
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4 -> ?assertEqual(Message, "This is a lager message");
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_ -> ?assert(false)
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end,
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{ok, State#state{log_id = LogId + 1}}
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catch
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_:Reason -> {ok, State#state{log_id = LogId + 1, failures = [Reason|Failures]}}
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end. |