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35 lines
1.2 KiB
35 lines
1.2 KiB
%% @doc This test is named zzzz_gh280_crash because it has to be run first and tests are run in
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%% reverse alphabetical order.
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%%
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%% The problem we are attempting to detect here is when log_mf_h is installed as a handler for error_logger
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%% and lager starts up to replace the current handlers with its own. This causes a start up crash because
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%% OTP error logging modules do not have any notion of a lager-style log level.
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-module(zzzz_gh280_crash).
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-include_lib("eunit/include/eunit.hrl").
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gh280_crash_test() ->
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{timeout, 30, fun() -> gh280_impl() end}.
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gh280_impl() ->
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application:stop(lager),
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application:stop(goldrush),
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error_logger:tty(false),
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%% see https://github.com/erlang/otp/blob/maint/lib/stdlib/src/log_mf_h.erl#L81
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%% for an explanation of the init arguments to log_mf_h
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ok = gen_event:add_sup_handler(error_logger, log_mf_h, log_mf_h:init("/tmp", 10000, 5)),
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lager:start(),
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Result = receive
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{gen_event_EXIT,log_mf_h,normal} ->
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true;
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{gen_event_EXIT,Handler,Reason} ->
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{Handler,Reason};
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X ->
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X
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after 10000 ->
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timeout
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end,
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?assert(Result),
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application:stop(lager),
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application:stop(goldrush).
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