%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2005-2013. 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% %% -module(zlib_SUITE). -include_lib("test_server/include/test_server.hrl"). -compile(export_all). -define(error(Format,Args), put(test_server_loc,{?MODULE,?LINE}), error(Format,Args,?MODULE,?LINE)). %% Learn erts team how to really write tests ;-) -define(m(ExpectedRes,Expr), fun() -> ACtual1 = (catch (Expr)), try case ACtual1 of ExpectedRes -> ACtual1 end catch error:{case_clause,ACtuAl} -> ?error("Not Matching Actual result was:~n ~p ~n", [ACtuAl]), ACtuAl end end()). -define(BARG, {'EXIT',{badarg,[{zlib,_,_,_}|_]}}). -define(DATA_ERROR, {'EXIT',{data_error,[{zlib,_,_,_}|_]}}). init_per_testcase(_Func, Config) -> Dog = test_server:timetrap(test_server:seconds(60)), [{watchdog, Dog}|Config]. end_per_testcase(_Func, Config) -> Dog = ?config(watchdog, Config), test_server:timetrap_cancel(Dog). error(Format, Args, File, Line) -> io:format("~p:~p: ERROR: " ++ Format, [File,Line|Args]), group_leader() ! {failed, File, Line}. %% Hopefully I don't need this to get it to work with the testserver.. %% Fail = #'REASON'{file = filename:basename(File), %% line = Line, %% desc = Args}, %% case global:whereis_name(mnesia_test_case_sup) of %% undefined -> %% ignore; %% Pid -> %% Pid ! Fail %% %% global:send(mnesia_test_case_sup, Fail), %% end, %% log("<>ERROR<>~n" ++ Format, Args, File, Line). suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> [{group, api}, {group, examples}, {group, func}, smp, otp_9981, otp_7359]. groups() -> [{api, [], [api_open_close, api_deflateInit, api_deflateSetDictionary, api_deflateReset, api_deflateParams, api_deflate, api_deflateEnd, api_inflateInit, api_inflateSetDictionary, api_inflateSync, api_inflateReset, api_inflate, api_inflateEnd, api_setBufsz, api_getBufsz, api_crc32, api_adler32, api_getQSize, api_un_compress, api_un_zip, api_g_un_zip]}, {examples, [], [intro]}, {func, [], [zip_usage, gz_usage, gz_usage2, compress_usage, dictionary_usage, large_deflate, crc, adler]}]. init_per_suite(Config) -> Config. end_per_suite(_Config) -> ok. init_per_group(_GroupName, Config) -> Config. end_per_group(_GroupName, Config) -> Config. api_open_close(doc) -> "Test open/0 and close/1"; api_open_close(suite) -> []; api_open_close(Config) when is_list(Config) -> ?line Fd1 = zlib:open(), ?line Fd2 = zlib:open(), ?m(false,Fd1 == Fd2), ?m(ok,zlib:close(Fd1)), ?m(?BARG, zlib:close(Fd1)), ?m(ok,zlib:close(Fd2)), %% Make sure that we don't get any EXIT messages if trap_exit is enabled. ?line process_flag(trap_exit, true), ?line Fd3 = zlib:open(), ?m(ok,zlib:close(Fd3)), receive Any -> ?line ?t:fail({unexpected_message,Any}) after 10 -> ok end. api_deflateInit(doc) -> "Test deflateInit/2 and /6"; api_deflateInit(suite) -> []; api_deflateInit(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(?BARG, zlib:deflateInit(gurka, none)), ?m(?BARG, zlib:deflateInit(gurka, gurka)), ?m(?BARG, zlib:deflateInit(Z1, gurka)), Levels = [none, default, best_speed, best_compression] ++ lists:seq(0,9), lists:foreach(fun(Level) -> ?line Z = zlib:open(), ?m(ok, zlib:deflateInit(Z, Level)), ?m(ok,zlib:close(Z)) end, Levels), %% /6 ?m(?BARG, zlib:deflateInit(Z1,gurka,deflated,-15,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,undefined,-15,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,48,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-20,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-7,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,7,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-8,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,8,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-15,0,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-15,10,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-15,8,0)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-15,8,undefined)), lists:foreach(fun(Level) -> ?line Z = zlib:open(), ?m(ok, zlib:deflateInit(Z, Level, deflated, -15, 8, default)), ?m(ok,zlib:close(Z)) end, Levels), lists:foreach(fun(Wbits) -> ?line Z11 = zlib:open(), ?m(ok, zlib:deflateInit(Z11,best_compression,deflated, Wbits,8,default)), ?line Z12 = zlib:open(), ?m(ok, zlib:deflateInit(Z12,default,deflated,-Wbits,8,default)), ?m(ok,zlib:close(Z11)), ?m(ok,zlib:close(Z12)) end, lists:seq(9, 15)), lists:foreach(fun(MemLevel) -> ?line Z = zlib:open(), ?m(ok, zlib:deflateInit(Z,default,deflated,-15, MemLevel,default)), ?m(ok,zlib:close(Z)) end, lists:seq(1,8)), Strategies = [filtered,huffman_only,default], lists:foreach(fun(Strategy) -> ?line Z = zlib:open(), ?m(ok, zlib:deflateInit(Z,best_speed,deflated,-15,8,Strategy)), ?m(ok,zlib:close(Z)) end, Strategies), ?m(ok, zlib:deflateInit(Z1,default,deflated,-15,8,default)), ?m({'EXIT',_}, zlib:deflateInit(Z1,none,deflated,-15,8,default)), %% ?? ?m(ok, zlib:close(Z1)). api_deflateSetDictionary(doc) -> "Test deflateSetDictionary"; api_deflateSetDictionary(suite) -> []; api_deflateSetDictionary(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1, default)), ?m(Id when is_integer(Id), zlib:deflateSetDictionary(Z1, <<1,1,2,3,4,5,1>>)), ?m(Id when is_integer(Id), zlib:deflateSetDictionary(Z1, [1,1,2,3,4,5,1])), ?m(?BARG, zlib:deflateSetDictionary(Z1, gurka)), ?m(?BARG, zlib:deflateSetDictionary(Z1, 128)), ?m(_, zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, none)), ?m({'EXIT',{stream_error,_}},zlib:deflateSetDictionary(Z1,<<1,1,2,3,4,5,1>>)), ?m(ok, zlib:close(Z1)). api_deflateReset(doc) -> "Test deflateReset"; api_deflateReset(suite) -> []; api_deflateReset(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1, default)), ?m(_, zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, none)), ?m(ok, zlib:deflateReset(Z1)), ?m(ok, zlib:deflateReset(Z1)), %% FIXME how do I make this go wrong?? ?m(ok, zlib:close(Z1)). api_deflateParams(doc) -> "Test deflateParams"; api_deflateParams(suite) -> []; api_deflateParams(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1, default)), ?m(_, zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, none)), ?m(ok, zlib:deflateParams(Z1, best_compression, huffman_only)), ?m(_, zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, sync)), ?m(ok, zlib:close(Z1)). api_deflate(doc) -> "Test deflate"; api_deflate(suite) -> []; api_deflate(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1, default)), ?m([B] when is_binary(B), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, finish)), ?m(ok, zlib:deflateReset(Z1)), ?m([B] when is_binary(B), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, finish)), ?m(ok, zlib:deflateReset(Z1)), ?m(B when is_list(B), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>)), ?m(B when is_list(B), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, none)), ?m(B when is_list(B), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, sync)), ?m(B when is_list(B), zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, full)), ?m(B when is_list(B), zlib:deflate(Z1, <<>>, finish)), ?m(?BARG, zlib:deflate(gurka, <<1,1,1,1,1,1,1,1,1>>, full)), ?m(?BARG, zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, asdj)), ?m(?BARG, zlib:deflate(Z1, <<1,1,1,1,1,1,1,1,1>>, 198)), %% Causes problems ERROR REPORT ?m(?BARG, zlib:deflate(Z1, [asdj,asd], none)), ?m(ok, zlib:close(Z1)). api_deflateEnd(doc) -> "Test deflateEnd"; api_deflateEnd(suite) -> []; api_deflateEnd(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1, default)), ?m(ok, zlib:deflateEnd(Z1)), ?m({'EXIT', {einval,_}}, zlib:deflateEnd(Z1)), %% ?? ?m(?BARG, zlib:deflateEnd(gurka)), ?m(ok, zlib:deflateInit(Z1, default)), ?m(B when is_list(B), zlib:deflate(Z1, <<"Kilroy was here">>)), ?m({'EXIT', {data_error,_}}, zlib:deflateEnd(Z1)), ?m(ok, zlib:deflateInit(Z1, default)), ?m(B when is_list(B), zlib:deflate(Z1, <<"Kilroy was here">>)), ?m(B when is_list(B), zlib:deflate(Z1, <<"Kilroy was here">>, finish)), ?m(ok, zlib:deflateEnd(Z1)), ?m(ok, zlib:close(Z1)). api_inflateInit(doc) -> "Test inflateInit /1 and /2"; api_inflateInit(suite) -> []; api_inflateInit(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(?BARG, zlib:inflateInit(gurka)), ?m(ok, zlib:inflateInit(Z1)), ?m({'EXIT',{einval,_}}, zlib:inflateInit(Z1, 15)), %% ?? lists:foreach(fun(Wbits) -> ?line Z11 = zlib:open(), ?m(ok, zlib:inflateInit(Z11,Wbits)), ?line Z12 = zlib:open(), ?m(ok, zlib:inflateInit(Z12,-Wbits)), ?m(ok,zlib:close(Z11)), ?m(ok,zlib:close(Z12)) end, lists:seq(9,15)), ?m(?BARG, zlib:inflateInit(gurka, -15)), ?m(?BARG, zlib:inflateInit(Z1, 7)), ?m(?BARG, zlib:inflateInit(Z1, -7)), ?m(?BARG, zlib:inflateInit(Z1, 48)), ?m(?BARG, zlib:inflateInit(Z1, -16)), ?m(ok, zlib:close(Z1)). api_inflateSetDictionary(doc) -> "Test inflateSetDictionary"; api_inflateSetDictionary(suite) -> []; api_inflateSetDictionary(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:inflateInit(Z1)), ?m(?BARG, zlib:inflateSetDictionary(gurka,<<1,1,1,1,1>>)), ?m(?BARG, zlib:inflateSetDictionary(Z1,102)), ?m(?BARG, zlib:inflateSetDictionary(Z1,gurka)), Dict = <<1,1,1,1,1>>, ?m({'EXIT',{stream_error,_}}, zlib:inflateSetDictionary(Z1,Dict)), ?m(ok, zlib:close(Z1)). api_inflateSync(doc) -> "Test inflateSync"; api_inflateSync(suite) -> []; api_inflateSync(Config) when is_list(Config) -> {skip,"inflateSync/1 sucks"}. %% ?line Z1 = zlib:open(), %% ?m(ok, zlib:deflateInit(Z1)), %% ?line B1list0 = zlib:deflate(Z1, "gurkan gurra ger galna tunnor", full), %% ?line B2 = zlib:deflate(Z1, "grodan boll", finish), %% io:format("~p\n", [B1list0]), %% io:format("~p\n", [B2]), %% ?m(ok, zlib:deflateEnd(Z1)), %% ?line B1 = clobber(14, list_to_binary(B1list0)), %% ?line Compressed = list_to_binary([B1,B2]), %% ?line io:format("~p\n", [Compressed]), %% ?m(ok, zlib:inflateInit(Z1)), %% ?m(?BARG, zlib:inflateSync(gurka)), %% ?m({'EXIT',{data_error,_}}, zlib:inflate(Z1, Compressed)), %% ?m(ok, zlib:inflateSync(Z1)), %% ?line Ubs = zlib:inflate(Z1, []), %% ?line <<"grodan boll">> = list_to_binary(Ubs), %% ?m(ok, zlib:close(Z1)). clobber(N, Bin) when is_binary(Bin) -> T = list_to_tuple(binary_to_list(Bin)), Byte = case element(N, T) of 255 -> 254; B -> B+1 end, list_to_binary(tuple_to_list(setelement(N, T, Byte))). api_inflateReset(doc) -> "Test inflateReset"; api_inflateReset(suite) -> []; api_inflateReset(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:inflateInit(Z1)), ?m(?BARG, zlib:inflateReset(gurka)), ?m(ok, zlib:inflateReset(Z1)), ?m(ok, zlib:close(Z1)). api_inflate(doc) -> "Test inflate"; api_inflate(suite) -> []; api_inflate(Config) when is_list(Config) -> Data = [<<1,2,2,3,3,3,4,4,4,4>>], ?line Compressed = zlib:compress(Data), ?line Z1 = zlib:open(), ?m(ok, zlib:inflateInit(Z1)), ?m([], zlib:inflate(Z1, <<>>)), ?m(Data, zlib:inflate(Z1, Compressed)), ?m(ok, zlib:inflateEnd(Z1)), ?m(ok, zlib:inflateInit(Z1)), ?m(Data, zlib:inflate(Z1, Compressed)), ?m(?BARG, zlib:inflate(gurka, Compressed)), ?m(?BARG, zlib:inflate(Z1, 4384)), ?m(?BARG, zlib:inflate(Z1, [atom_list])), ?m(ok, zlib:inflateEnd(Z1)), ?m(ok, zlib:inflateInit(Z1)), ?m({'EXIT',{data_error,_}}, zlib:inflate(Z1, <<2,1,2,1,2>>)), ?m(ok, zlib:close(Z1)). api_inflateEnd(doc) -> "Test inflateEnd"; api_inflateEnd(suite) -> []; api_inflateEnd(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m({'EXIT',{einval,_}}, zlib:inflateEnd(Z1)), ?m(ok, zlib:inflateInit(Z1)), ?m(?BARG, zlib:inflateEnd(gurka)), ?m({'EXIT',{data_error,_}}, zlib:inflateEnd(Z1)), ?m({'EXIT',{einval,_}}, zlib:inflateEnd(Z1)), ?m(ok, zlib:inflateInit(Z1)), ?m(B when is_list(B), zlib:inflate(Z1, zlib:compress("abc"))), ?m(ok, zlib:inflateEnd(Z1)), ?m(ok, zlib:close(Z1)). api_getBufsz(doc) -> "Test getBufsz"; api_getBufsz(suite) -> []; api_getBufsz(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(Val when is_integer(Val), zlib:getBufSize(Z1)), ?m(?BARG, zlib:getBufSize(gurka)), ?m(ok, zlib:close(Z1)). api_setBufsz(doc) -> "Test setBufsz"; api_setBufsz(suite) -> []; api_setBufsz(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(?BARG, zlib:setBufSize(Z1, gurka)), ?m(?BARG, zlib:setBufSize(gurka, 1232330)), Sz = ?m( Val when is_integer(Val), zlib:getBufSize(Z1)), ?m(ok, zlib:setBufSize(Z1, Sz*2)), DSz = Sz*2, ?m(DSz, zlib:getBufSize(Z1)), ?m(ok, zlib:close(Z1)). %%% Debug function ?? api_getQSize(doc) -> "Test getQSize"; api_getQSize(suite) -> []; api_getQSize(Config) when is_list(Config) -> ?line Z1 = zlib:open(), Q = ?m(Val when is_integer(Val), zlib:getQSize(Z1)), io:format("QSize ~p ~n", [Q]), ?m(?BARG, zlib:getQSize(gurka)), ?m(ok, zlib:close(Z1)). api_crc32(doc) -> "Test crc32"; api_crc32(suite) -> []; api_crc32(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1,best_speed,deflated,-15,8,default)), Bin = <<1,1,1,1,1,1,1,1,1>>, Compressed1 = ?m(_, zlib:deflate(Z1, Bin, none)), Compressed2 = ?m(_, zlib:deflate(Z1, <<>>, finish)), Compressed = list_to_binary(Compressed1 ++ Compressed2), CRC1 = ?m( CRC1 when is_integer(CRC1), zlib:crc32(Z1)), ?m(CRC1 when is_integer(CRC1), zlib:crc32(Z1,Bin)), ?m(CRC1 when is_integer(CRC1), zlib:crc32(Z1,binary_to_list(Bin))), ?m(CRC2 when is_integer(CRC2), zlib:crc32(Z1,Compressed)), CRC2 = ?m(CRC2 when is_integer(CRC2), zlib:crc32(Z1,0,Compressed)), ?m(CRC3 when CRC2 /= CRC3, zlib:crc32(Z1,234,Compressed)), ?m(?BARG, zlib:crc32(gurka)), ?m(?BARG, zlib:crc32(Z1, not_a_binary)), ?m(?BARG, zlib:crc32(gurka, <<1,1,2,4,4>>)), ?m(?BARG, zlib:crc32(Z1, 2298929, not_a_binary)), ?m(?BARG, zlib:crc32(Z1, not_an_int, <<123,123,123,35,231>>)), ?m(?BARG, zlib:crc32_combine(Z1, not_an_int, 123123, 123)), ?m(?BARG, zlib:crc32_combine(Z1, noint, 123123, 123)), ?m(?BARG, zlib:crc32_combine(Z1, 123123, noint, 123)), ?m(?BARG, zlib:crc32_combine(Z1, 123123, 123, noint)), ?m(ok, zlib:deflateEnd(Z1)), ?m(ok, zlib:close(Z1)). api_adler32(doc) -> "Test adler32"; api_adler32(suite) -> []; api_adler32(Config) when is_list(Config) -> ?line Z1 = zlib:open(), ?m(ok, zlib:deflateInit(Z1,best_speed,deflated,-15,8,default)), Bin = <<1,1,1,1,1,1,1,1,1>>, Compressed1 = ?m(_, zlib:deflate(Z1, Bin, none)), Compressed2 = ?m(_, zlib:deflate(Z1, <<>>, finish)), Compressed = list_to_binary(Compressed1 ++ Compressed2), ?m(ADLER1 when is_integer(ADLER1), zlib:adler32(Z1,Bin)), ?m(ADLER1 when is_integer(ADLER1), zlib:adler32(Z1,binary_to_list(Bin))), ADLER2 = ?m(ADLER2 when is_integer(ADLER2), zlib:adler32(Z1,Compressed)), ?m(ADLER2 when is_integer(ADLER2), zlib:adler32(Z1,1,Compressed)), ?m(ADLER3 when ADLER2 /= ADLER3, zlib:adler32(Z1,234,Compressed)), ?m(?BARG, zlib:adler32(Z1, not_a_binary)), ?m(?BARG, zlib:adler32(gurka, <<1,1,2,4,4>>)), ?m(?BARG, zlib:adler32(Z1, 2298929, not_a_binary)), ?m(?BARG, zlib:adler32(Z1, not_an_int, <<123,123,123,35,231>>)), ?m(?BARG, zlib:adler32_combine(Z1, noint, 123123, 123)), ?m(?BARG, zlib:adler32_combine(Z1, 123123, noint, 123)), ?m(?BARG, zlib:adler32_combine(Z1, 123123, 123, noint)), ?m(ok, zlib:deflateEnd(Z1)), ?m(ok, zlib:close(Z1)). api_un_compress(doc) -> "Test compress"; api_un_compress(suite) -> []; api_un_compress(Config) when is_list(Config) -> ?m(?BARG,zlib:compress(not_a_binary)), Bin = <<1,11,1,23,45>>, ?line Comp = zlib:compress(Bin), ?m(?BARG,zlib:uncompress(not_a_binary)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<171,171,171,171,171>>)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<>>)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<120>>)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<120,156>>)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<120,156,3>>)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<120,156,3,0>>)), ?m({'EXIT',{data_error,_}}, zlib:uncompress(<<0,156,3,0,0,0,0,1>>)), ?m(Bin, zlib:uncompress(binary_to_list(Comp))), ?m(Bin, zlib:uncompress(Comp)). api_un_zip(doc) -> "Test zip"; api_un_zip(suite) -> []; api_un_zip(Config) when is_list(Config) -> ?m(?BARG,zlib:zip(not_a_binary)), Bin = <<1,11,1,23,45>>, ?line Comp = zlib:zip(Bin), ?m(Comp, zlib:zip(binary_to_list(Bin))), ?m(?BARG,zlib:unzip(not_a_binary)), ?m({'EXIT',{data_error,_}}, zlib:unzip(<<171,171,171,171,171>>)), ?m({'EXIT',{data_error,_}}, zlib:unzip(<<>>)), ?m(Bin, zlib:unzip(Comp)), ?m(Bin, zlib:unzip(binary_to_list(Comp))), %% OTP-6396 B = <<131,104,19,100,0,13,99,95,99,105,100,95,99,115,103,115,110,95,50,97,1,107,0,4,208,161,246,29,107,0,3,237,166,224,107,0,6,66,240,153,0,2,10,1,0,8,97,116,116,97,99,104,101,100,104,2,100,0,22,117,112,100,97,116,101,95,112,100,112,95,99,111,110,116,101,120,116,95,114,101,113,107,0,114,69,3,12,1,11,97,31,113,150,64,104,132,61,64,104,12,3,197,31,113,150,64,104,132,61,64,104,12,1,11,97,31,115,150,64,104,116,73,64,104,0,0,0,0,0,0,65,149,16,61,65,149,16,61,1,241,33,4,5,0,33,4,4,10,6,10,181,4,10,6,10,181,38,15,99,111,109,109,97,110,100,1,114,45,97,112,110,45,49,3,99,111,109,5,109,110,99,57,57,6,109,99,99,50,52,48,4,103,112,114,115,8,0,104,2,104,2,100,0,8,97,99,116,105,118,97,116,101,104,23,100,0,11,112,100,112,95,99,111,110,116,1,120,116,100,0,7,112,114,105,109,97,114,121,97,1,100,0,9,117,110,100,101,102,105,110,101,100,97,1,97,4,97,4,97,7,100,0,9,117,110,100,101,102,105,110,101,100,100,0,9,117,110,100,101,102,105,110,10100,100,0,9,117,110,100,101,102,105,110,101,100,100,0,5,102,97,108,115,101,100,0,9,117,110,100,101,102,105,110,101,100,100,0,9,117,110,100,101,102,105,110,101,100,100,0,9,117,110,100,101,102,105,1,101,100,97,0,100,0,9,117,110,100,101,102,105,110,101,100,107,0,4,16,0,1,144,107,0,4,61,139,186,181,107,0,4,10,8,201,49,100,0,9,117,110,100,101,102,105,110,101,100,100,0,9,117,110,100,101,102,105,0,101,100,100,0,9,117,110,100,101,102,105,110,101,100,104,2,104,3,98,0,0,7,214,97,11,97,20,104,3,97,17,97,16,97,21,106,108,0,0,0,3,104,2,97,1,104,2,104,3,98,0,0,7,214,97,11,97,20,104,3,97,17,97,167,20,104,2,97,4,104,2,104,3,98,0,0,7,214,97,11,97,20,104,3,97,17,97,16,97,21,104,2,97,10,104,2,104,3,98,0,0,7,214,97,11,97,20,104,3,97,17,97,16,97,26,106,100,0,5,118,101,114,57,57,100,0,9,117,110,0,101,102,105,110,101,100,107,0,2,0,244,107,0,4,10,6,102,195,107,0,4,10,6,102,195,100,0,9,117,110,100,101,102,105,110,101,100,100,0,9,117,110,100,101,102,105,110,101,100,107,0,125,248,143,0,203,25115,157,116,65,185,65,172,55,87,164,88,225,50,203,251,115,157,116,65,185,65,172,55,87,164,88,225,50,0,0,82,153,50,0,200,98,87,148,237,193,185,65,149,167,69,144,14,16,153,50,3,81,70,94,13,109,193,1,120,5,181,113,198,118,50,3,81,70,94,13,109,193,185,120,5,181,113,198,118,153,3,81,70,94,13,109,193,185,120,5,181,113,198,118,153,50,16,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,113,92,2,119,128,0,0,108,0,0,1,107,0,114,69,3,12,1,11,97,31,113,150,64,104,132,61,64,104,12,3,11,97,31,113,150,64,104,132,61,64,104,12,1,11,97,31,115,150,64,104,116,73,64,104,0,0,0,0,0,0,65,149,16,61,65,149,16,61,1,241,33,4,0,33,4,4,10,6,10,181,4,10,6,10,181,38,15,99,111,109,109,97,110,100,101,114,45,97,112,110,45,49,3,99,111,109,5,109,110,99,57,57,6,109,99,99,50,52,48,4,103,112,114,115,8,0,106>>, Z = zlib:zip(B), ?m(B, zlib:unzip(Z)). %% api_g_un_zip_file(doc) -> "Test gunzip_file"; %% api_g_un_zip_file(suite) -> []; %% api_g_un_zip_file(Config) when is_list(Config) -> %% ?line Out = conf(data_dir,Config), %% io:format("Using OutDir ~p ~n", [Out]), %% F = filename:join(Out,"testing1"), %% Data = <<1,1,255,255,255,1,1>>, %% ?m(ok, file:write_file(F,Data)), %% ?line Compressed = zlib:gzip_file(F), %% ?m(ok, file:write_file(F++".gz",Compressed)), %% ?m(Data, zlib:gunzip_file(F++".gz")), %% ?m({error,enoent}, zlib:gunzip_file(gurka)), %% ?m({error,enoent}, zlib:gzip_file(gurka)), %% ?m({error,what}, zlib:gunzip_file(F)), %% ?line ok. api_g_un_zip(doc) -> "Test gunzip"; api_g_un_zip(suite) -> []; api_g_un_zip(Config) when is_list(Config) -> ?m(?BARG,zlib:gzip(not_a_binary)), Bin = <<1,11,1,23,45>>, ?line Comp = zlib:gzip(Bin), ?m(Comp, zlib:gzip(binary_to_list(Bin))), ?m(?BARG, zlib:gunzip(not_a_binary)), ?m(?DATA_ERROR, zlib:gunzip(<<171,171,171,171,171>>)), ?m(?DATA_ERROR, zlib:gunzip(<<>>)), ?m(Bin, zlib:gunzip(Comp)), ?m(Bin, zlib:gunzip(binary_to_list(Comp))), %% Bad CRC; bad length. BadCrc = bad_crc_data(), ?line ?m({'EXIT',{data_error,_}},(catch zlib:gunzip(BadCrc))), BadLen = bad_len_data(), ?line ?m({'EXIT',{data_error,_}},(catch zlib:gunzip(BadLen))), ok. bad_crc_data() -> %% zlib:zip(<<42>>), one byte changed. <<31,139,8,0,0,0,0,0,0,3,211,2,0,91,39,185,9,1,0,0,0>>. bad_len_data() -> %% zlib:zip(<<42>>), one byte changed. <<31,139,8,0,0,0,0,0,0,3,211,2,0,91,38,185,9,2,0,0,0>>. intro(suite) -> []; intro(doc) -> ""; intro(Config) when is_list(Config) -> D = <<"This is a binary">>, [put({ex, N}, <<"This is a binary">>) || N <- [0,1,2,3,4]], put({ex, 5}, end_of_data), put(ex,0), ?line Read = fun() -> N = get(ex), put(ex,N+1), get({ex,N}) end, ?line Z = zlib:open(), ?line ok = zlib:deflateInit(Z,default), ?line Compress = fun(end_of_data, _Cont) -> []; (Data, Cont) -> [zlib:deflate(Z, Data)|Cont(Read(),Cont)] end, ?line Compressed = Compress(Read(),Compress), ?line Last = zlib:deflate(Z, [], finish), ?line ok = zlib:deflateEnd(Z), ?line zlib:close(Z), ?line Res = list_to_binary([Compressed|Last]), Orig = list_to_binary(lists:duplicate(5, D)), ?m(Orig, zlib:uncompress(Res)). large_deflate(doc) -> "Test deflate large file, which had a bug reported on erlang-bugs"; large_deflate(suite) -> []; large_deflate(Config) when is_list(Config) -> large_deflate_do(). large_deflate_do() -> ?line Z = zlib:open(), ?line Plain = rand_bytes(zlib:getBufSize(Z)*5), ?line ok = zlib:deflateInit(Z), ?line _ZlibHeader = zlib:deflate(Z, [], full), ?line Deflated = zlib:deflate(Z, Plain, full), ?m(ok, zlib:close(Z)), ?m(Plain, zlib:unzip(list_to_binary([Deflated, 3, 0]))). rand_bytes(Sz) -> L = <<8,2,3,6,1,2,3,2,3,4,8,7,3,7,2,3,4,7,5,8,9,3>>, rand_bytes(erlang:md5(L),Sz). rand_bytes(Bin, Sz) when byte_size(Bin) >= Sz -> <> = Bin, Res; rand_bytes(Bin, Sz) -> rand_bytes(<<(erlang:md5(Bin))/binary, Bin/binary>>, Sz). zip_usage(doc) -> "Test a standard compressed zip file"; zip_usage(suite) -> []; zip_usage(Config) when is_list(Config) -> zip_usage(zip_usage({get_arg,Config})); zip_usage({get_arg,Config}) -> ?line Out = conf(data_dir,Config), ?line {ok,ZIP} = file:read_file(filename:join(Out,"zipdoc.zip")), ?line {ok,ORIG} = file:read_file(filename:join(Out,"zipdoc")), {run,ZIP,ORIG}; zip_usage({run,ZIP,ORIG}) -> ?line <<_:14/binary, CRC:32/little, CompSz:32/little, UnCompSz:32/little,_:31/binary, Compressed:CompSz/binary, _/binary>> = ZIP, %%io:format("CRC ~p CSz ~p UnCSz ~p ~n", [CRC,CompSz,UnCompSz]), ?line Split = split_bin(Compressed,[]), ?line Z = zlib:open(), ?m(ok, zlib:inflateInit(Z, -15)), Bs = [zlib:inflate(Z, Part) || Part <- Split], UC0 = list_to_binary(Bs), ?m(UnCompSz, byte_size(UC0)), ?m(CRC, zlib:crc32(Z)), ?m(true, zlib:crc32(Z,UC0) == zlib:crc32(Z,ORIG)), ?m(ok, zlib:inflateEnd(Z)), ?line UC1 = zlib:unzip(Compressed), ?m(UnCompSz, byte_size(UC1)), ?m(true, zlib:crc32(Z,UC1) == zlib:crc32(Z,ORIG)), ?m(ok, zlib:inflateInit(Z, -15)), ?line UC2 = zlib:inflate(Z, Compressed), ?m(UnCompSz, byte_size(list_to_binary(UC2))), ?m(CRC, zlib:crc32(Z)), ?m(true, zlib:crc32(Z,UC2) == zlib:crc32(Z,ORIG)), ?m(ok, zlib:inflateEnd(Z)), ?m(ok, zlib:inflateInit(Z, -15)), ?line UC3 = zlib:inflate(Z, Split), % Test multivec. ?m(UnCompSz, byte_size(list_to_binary(UC3))), ?m(true, zlib:crc32(Z,UC3) == zlib:crc32(Z,ORIG)), ?m(CRC, zlib:crc32(Z)), ?m(ok, zlib:inflateEnd(Z)), ?m(ok, zlib:inflateInit(Z, -15)), ?m(ok, zlib:setBufSize(Z, UnCompSz *2)), ?line UC4 = zlib:inflate(Z, Compressed), ?m(UnCompSz, byte_size(list_to_binary(UC4))), ?m(CRC, zlib:crc32(Z)), ?m(CRC, zlib:crc32(Z,UC4)), ?m(true, zlib:crc32(Z,UC4) == zlib:crc32(Z,ORIG)), ?m(ok, zlib:inflateEnd(Z)), ?line C1 = zlib:zip(ORIG), ?line UC5 = zlib:unzip(C1), ?m(CRC, zlib:crc32(Z,UC5)), ?m(true,zlib:crc32(Z,UC5) == zlib:crc32(Z,ORIG)), ?m(ok, zlib:deflateInit(Z, default, deflated, -15, 8, default)), ?line C2 = zlib:deflate(Z, ORIG, finish), ?m(true, C1 == list_to_binary(C2)), ?m(ok, zlib:deflateEnd(Z)), ?m(ok, zlib:deflateInit(Z, none, deflated, -15, 8, filtered)), ?m(ok, zlib:deflateParams(Z, default, default)), ?line C3 = zlib:deflate(Z, ORIG, finish), ?m(true, C1 == list_to_binary(C3)), ?m(ok, zlib:deflateEnd(Z)), ?line ok = zlib:close(Z), ?line ok. gz_usage(doc) -> "Test a standard compressed gzipped file"; gz_usage(suite) -> []; gz_usage(Config) when is_list(Config) -> gz_usage(gz_usage({get_arg,Config})); gz_usage({get_arg,Config}) -> ?line Out = conf(data_dir,Config), ?line {ok,GZIP} = file:read_file(filename:join(Out,"zipdoc.1.gz")), ?line {ok,ORIG} = file:read_file(filename:join(Out,"zipdoc")), ?line {ok,GZIP2} = file:read_file(filename:join(Out,"zipdoc.txt.gz")), {run,GZIP,ORIG,GZIP2}; gz_usage({run,GZIP,ORIG,GZIP2}) -> ?line Z = zlib:open(), ?line UC1 = zlib:gunzip(GZIP), ?m(true,zlib:crc32(Z,UC1) == zlib:crc32(Z,ORIG)), ?line UC3 = zlib:gunzip(GZIP2), ?m(true,zlib:crc32(Z,UC3) == zlib:crc32(Z,ORIG)), ?line Compressed = zlib:gzip(ORIG), ?line UC5 = zlib:gunzip(Compressed), ?m(true,zlib:crc32(Z,UC5) == zlib:crc32(Z,ORIG)), ?line ok = zlib:close(Z). gz_usage2(doc) -> "Test more of a standard compressed gzipped file"; gz_usage2(suite) -> []; gz_usage2(Config) -> case os:find_executable("gzip") of Name when is_list(Name) -> ?line Z = zlib:open(), ?line Out = conf(data_dir,Config), ?line {ok,ORIG} = file:read_file(filename:join(Out,"zipdoc")), ?line Compressed = zlib:gzip(ORIG), GzOutFile = filename:join(Out,"out.gz"), OutFile = filename:join(Out,"out.txt"), ?m(ok, file:write_file(GzOutFile,Compressed)), ?line os:cmd("gzip -c -d " ++ GzOutFile ++ " > " ++ OutFile), case file:read_file(OutFile) of {ok,ExtDecompressed} -> ?m(true, zlib:crc32(Z,ExtDecompressed) == zlib:crc32(Z,ORIG)); Error -> io:format("Couldn't test external decompressor ~p\n", [Error]) end, ?line ok = zlib:close(Z), ok; false -> {skipped,"No gzip in path"} end. compress_usage(doc) -> "Test that (de)compress funcs work with" " standard tools, for example a chunk from a png file"; compress_usage(suite) -> []; compress_usage(Config) when is_list(Config) -> compress_usage(compress_usage({get_arg,Config})); compress_usage({get_arg,Config}) -> ?line Out = conf(data_dir,Config), ?line {ok,C1} = file:read_file(filename:join(Out,"png-compressed.zlib")), {run,C1}; compress_usage({run,C1}) -> ?line Z = zlib:open(), %% See that we can uncompress a file generated with external prog. ?line UC1 = zlib:uncompress(C1), %% Check that the crc are correct. ?m(4125865008,zlib:crc32(Z,UC1)), ?line C2 = zlib:compress(UC1), ?line UC2 = zlib:uncompress(C2), %% Check that the crc are correct. ?m(4125865008,zlib:crc32(Z,UC2)), ?line ok = zlib:close(Z), D = [<<"We tests some partial">>, <<"data, sent over">>, <<"the stream">>, <<"we check that we can unpack">>, <<"every message we get">>], ?line ZC = zlib:open(), ?line ZU = zlib:open(), Test = fun(finish, {_,Tot}) -> ?line Compressed = zlib:deflate(ZC, <<>>, finish), Data = zlib:inflate(ZU, Compressed), [Tot|Data]; (Data, {Op,Tot}) -> ?line Compressed = zlib:deflate(ZC, Data, Op), Res1 = ?m([Data],zlib:inflate(ZU, Compressed)), {Op, [Tot|Res1]} end, ?line zlib:deflateInit(ZC), ?line zlib:inflateInit(ZU), ?line T1 = lists:foldl(Test,{sync,[]},D++[finish]), ?m(true, list_to_binary(D) == list_to_binary(T1)), ?line zlib:deflateEnd(ZC), ?line zlib:inflateEnd(ZU), ?line zlib:deflateInit(ZC), ?line zlib:inflateInit(ZU), ?line T2 = lists:foldl(Test,{full,[]},D++[finish]), ?m(true, list_to_binary(D) == list_to_binary(T2)), ?line zlib:deflateEnd(ZC), ?line zlib:inflateEnd(ZU), ?line ok = zlib:close(ZC), ?line ok = zlib:close(ZU). crc(doc) -> "Check that crc works as expected"; crc(suite) -> []; crc(Config) when is_list(Config) -> crc(crc({get_arg,Config})); crc({get_arg,Config}) -> ?line Out = conf(data_dir,Config), ?line {ok,C1} = file:read_file(filename:join(Out,"zipdoc")), {run,C1}; crc({run,C1}) -> ?line Z = zlib:open(), ?line Crc = zlib:crc32(Z, C1), Bins = split_bin(C1,[]), %%io:format("Length ~p ~p ~n", [length(Bins), [size(Bin) || Bin <- Bins]]), Last = lists:last(Bins), SCrc = lists:foldl(fun(Bin,Crc0) -> Crc1 = zlib:crc32(Z, Crc0, Bin), ?m(false, Crc == Crc1 andalso Bin /= Last), Crc1 end, 0, Bins), ?m(Crc,SCrc), ?line [First|Rest] = Bins, Combine = fun(Bin, CS1) -> CS2 = zlib:crc32(Z, Bin), S2 = byte_size(Bin), zlib:crc32_combine(Z,CS1,CS2,S2) end, ?line Comb = lists:foldl(Combine, zlib:crc32(Z, First), Rest), ?m(Crc,Comb), ?line ok = zlib:close(Z). adler(doc) -> "Check that adler works as expected"; adler(suite) -> []; adler(Config) when is_list(Config) -> adler(adler({get_arg,Config})); adler({get_arg,Config}) -> ?line Out = conf(data_dir,Config), File1 = filename:join(Out,"zipdoc"), ?line {ok,C1} = file:read_file(File1), {run,C1}; adler({run,C1}) -> ?line Z = zlib:open(), ?m(1, zlib:adler32(Z,<<>>)), ?line Crc = zlib:adler32(Z, C1), Bins = split_bin(C1,[]), Last = lists:last(Bins), SCrc = lists:foldl(fun(Bin,Crc0) -> Crc1 = zlib:adler32(Z, Crc0, Bin), ?m(false, Crc == Crc1 andalso Bin /= Last), Crc1 end, zlib:adler32(Z,<<>>), Bins), ?m(Crc,SCrc), ?line [First|Rest] = Bins, Combine = fun(Bin, CS1) -> CS2 = zlib:adler32(Z, Bin), S2 = byte_size(Bin), zlib:adler32_combine(Z,CS1,CS2,S2) end, ?line Comb = lists:foldl(Combine, zlib:adler32(Z, First), Rest), ?m(Crc,Comb), ?line ok = zlib:close(Z). dictionary_usage(doc) -> "Test dictionary usage"; dictionary_usage(suite) -> []; dictionary_usage(Config) when is_list(Config) -> dictionary_usage(dictionary_usage({get_arg,Config})); dictionary_usage({get_arg,_Config}) -> {run}; % no args dictionary_usage({run}) -> ?line Z1 = zlib:open(), Dict = <<"Anka">>, Data = <<"Kalle Anka">>, ?m(ok, zlib:deflateInit(Z1)), ?line DictID = zlib:deflateSetDictionary(Z1, Dict), %% ?line io:format("DictID = ~p\n", [DictID]), ?line B1 = zlib:deflate(Z1, Data), ?line B2 = zlib:deflate(Z1, <<>>, finish), ?m(ok, zlib:deflateEnd(Z1)), ?m(ok, zlib:close(Z1)), Compressed = list_to_binary([B1,B2]), %% io:format("~p\n", [Compressed]), %% Now uncompress. ?line Z2 = zlib:open(), ?m(ok, zlib:inflateInit(Z2)), ?line {'EXIT',{{need_dictionary,DictID},_}} = (catch zlib:inflate(Z2, Compressed)), ?m(ok, zlib:inflateSetDictionary(Z2, Dict)), ?m(ok, zlib:inflateSetDictionary(Z2, binary_to_list(Dict))), ?line Uncompressed = ?m(B when is_list(B), zlib:inflate(Z2, [])), ?m(ok, zlib:inflateEnd(Z2)), ?m(ok, zlib:close(Z2)), ?m(Data, list_to_binary(Uncompressed)). split_bin(<>, Acc) -> split_bin(Rest, [Part|Acc]); split_bin(Last,Acc) -> lists:reverse([Last|Acc]). smp(doc) -> "Check concurrent access to zlib driver"; smp(suite) -> []; smp(Config) -> case erlang:system_info(smp_support) of true -> NumOfProcs = lists:min([8,erlang:system_info(schedulers)]), io:format("smp starting ~p workers\n",[NumOfProcs]), %% Tests to run in parallel. Funcs = [zip_usage, gz_usage, compress_usage, dictionary_usage, crc, adler], %% We get all function arguments here to avoid repeated parallel %% file read access. FnAList = lists:map(fun(F) -> {F,?MODULE:F({get_arg,Config})} end, Funcs), Pids = [spawn_link(?MODULE, worker, [random:uniform(9999), list_to_tuple(FnAList), self()]) || _ <- lists:seq(1,NumOfProcs)], wait_pids(Pids); false -> {skipped,"No smp support"} end. worker(Seed, FnATpl, Parent) -> io:format("smp worker ~p, seed=~p~n",[self(),Seed]), random:seed(Seed,Seed,Seed), worker_loop(100, FnATpl), Parent ! self(). worker_loop(0, _FnATpl) -> large_deflate_do(), % the time consuming one as finale ok; worker_loop(N, FnATpl) -> {F,A} = element(random:uniform(size(FnATpl)),FnATpl), ?MODULE:F(A), worker_loop(N-1, FnATpl). wait_pids([]) -> ok; wait_pids(Pids) -> receive Pid -> ?line true = lists:member(Pid,Pids), Others = lists:delete(Pid,Pids), io:format("wait_pid got ~p, still waiting for ~p\n",[Pid,Others]), wait_pids(Others) end. otp_7359(doc) -> "Deflate/inflate data with size close to multiple of internal buffer size"; otp_7359(suite) -> []; otp_7359(_Config) -> %% Find compressed size ZTry = zlib:open(), ok = zlib:deflateInit(ZTry), ISize = zlib:getBufSize(ZTry), IData = list_to_binary([Byte band 255 || Byte <- lists:seq(1,ISize)]), ?line ISize = byte_size(IData), ?line DSize = iolist_size(zlib:deflate(ZTry, IData, sync)), zlib:close(ZTry), io:format("Deflated try ~p -> ~p bytes~n", [ISize, DSize]), %% Try deflate and inflate with different internal buffer sizes ISpan = 1, DSpan = 10, % use larger span around deflated size as it may vary depending on buf size Cases = [{DS,IS} || DMul<-[1,2], DS <- lists:seq((DSize div DMul)-DSpan, (DSize div DMul)+DSpan), IMul<-[1,2], IS <- lists:seq((ISize div IMul)-ISpan, (ISize div IMul)+ISpan)], lists:foreach(fun(Case) -> otp_7359_def_inf(IData,Case) end, Cases). otp_7359_def_inf(Data,{DefSize,InfSize}) -> %%io:format("Try: DefSize=~p InfSize=~p~n", [DefSize,InfSize]), ?line ZDef = zlib:open(), ?line ok = zlib:deflateInit(ZDef), ?line ok = zlib:setBufSize(ZDef,DefSize), ?line DefData = iolist_to_binary(zlib:deflate(ZDef, Data, sync)), %%io:format("Deflated ~p(~p) -> ~p(~p) bytes~n", %% [byte_size(Data), InfSize, byte_size(DefData), DefSize]), ?line ok = zlib:close(ZDef), ?line ZInf = zlib:open(), ?line ok = zlib:inflateInit(ZInf), ?line ok = zlib:setBufSize(ZInf,InfSize), ?line Data = iolist_to_binary(zlib:inflate(ZInf, DefData)), ?line ok = zlib:close(ZInf), ok. otp_9981(Config) when is_list(Config) -> Ports = lists:sort(erlang:ports()), Invalid = <<"My invalid data">>, catch zlib:compress(invalid), Ports = lists:sort(erlang:ports()), catch zlib:uncompress(Invalid), Ports = lists:sort(erlang:ports()), catch zlib:zip(invalid), Ports = lists:sort(erlang:ports()), catch zlib:unzip(Invalid), Ports = lists:sort(erlang:ports()), catch zlib:gzip(invalid), Ports = lists:sort(erlang:ports()), catch zlib:gunzip(Invalid), Ports = lists:sort(erlang:ports()), ok. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% Helps with testing directly %%%%%%%%%%%%% conf(What,Config) -> try ?config(What,Config) of undefined -> "./zlib_SUITE_data"; Dir -> Dir catch _:_ -> "./zlib_SUITE_data" end. t() -> t([all]). t(What) when not is_list(What) -> t([What]); t(What) -> lists:foreach(fun(T) -> try ?MODULE:T([]) catch _E:_R -> Line = get(test_server_loc), io:format("Failed ~p:~p ~p ~p ~p~n", [T,Line,_E,_R, erlang:get_stacktrace()]) end end, expand(What)). expand(All) -> lists:reverse(expand(All,[])). expand([H|T], Acc) -> case ?MODULE:H(suite) of [] -> expand(T,[H|Acc]); Cs -> R = expand(Cs, Acc), expand(T, R) end; expand([], Acc) -> Acc.