-module(util).
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-export([test_good/1, test_errors/1]).
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test_good(Cases) ->
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lists:foreach(fun(Case) -> check_good(Case) end, Cases).
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test_errors(Cases) ->
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lists:foreach(fun(Case) -> check_error(Case) end, Cases).
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ok_dec(J, _E) ->
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lists:flatten(io_lib:format("Decoded ~p.", [J])).
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ok_enc(E, _J) ->
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lists:flatten(io_lib:format("Encoded ~p", [E])).
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do_encode(E) ->
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{ok, Data} = jiffy:encode(E),
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{ok, iolist_to_binary(Data)}.
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error_mesg(J) ->
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lists:flatten(io_lib:format("Decoding ~p returns an error.", [J])).
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check_good({J, E}) ->
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etap:is(jiffy:decode(J), {ok, E}, ok_dec(J, E)),
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etap:is(do_encode(E), {ok, J}, ok_enc(E, J));
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check_good({J, E, J2}) ->
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etap:is(jiffy:decode(J), {ok, E}, ok_dec(J, E)),
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etap:is(do_encode(E), {ok, J2}, ok_enc(E, J2)).
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check_error(J) ->
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etap:fun_is(
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fun({error, _}) -> true; (_) -> false end,
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jiffy:decode(J),
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error_mesg(J)
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).
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