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MAP codec test: Always try to re-encode and assert verbously in case of error

This commit is contained in:
Harald Welte 2011-03-12 10:23:10 +01:00
parent 49525f8af8
commit 3575d44ee7
1 changed files with 56 additions and 15 deletions
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71
test/map_codec_tests.erl
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@ -9,6 +9,22 @@
-include_lib("osmo_ss7/include/mtp3.hrl").
-include_lib("osmo_ss7/include/sccp.hrl").
% modified version of assertEqual()
-define(assertEqualArgs(Expect, Expr, Args),
((fun (__X) ->
case (Expr) of
__X -> ok;
__V -> ?debugFmt("Expected: ~w~nValue: ~w~n", [__X, __V]),
.erlang:error({assertEqual_failed,
[{module, ?MODULE},
{line, ?LINE},
{expression, (??Expr)},
{expected, __X},
{value, __V}] ++ Args})
end
end)(Expect))).
-define(_assertEqualArgs(Expect, Expr, Args), ?_test(?assertEqual(Expect, Expr, Args))).
-define(TCAP_MSG_BIN, <<100,65,73,4,81,1,2,200,107,42,40,40,6,7,0,17,134,5,1,1,1,160,29,97,27,128,2,7,128,161,9,6,7,4,0,0,1,0,1,3,162,3,2,1,0,163,5,161,3,2,1,0,108,13,163,11,2,1,64,2,1,8,48,3,10,1,0>>).
-define(TCAP_MSG_DEC, {'end',{'MapSpecificPDUs_end',[81,1,2,200],{'EXTERNAL',{syntax,{0,0,17,773,1,1,1}},asn1_NOVALUE,[97,27,128,2,7,128,161,9,6,7,4,0,0,1,0,1,3,162,3,2,1,0,163,5,161,3,2,1,0]},[{basicROS,{returnError,{'MapSpecificPDUs_end_components_SEQOF_basicROS_returnError',{present,64},{local,8},{'RoamingNotAllowedParam',plmnRoamingNotAllowed,asn1_NOVALUE}}}}]}}).
@ -54,30 +70,55 @@ pcap_parse_t() ->
[File])
end.
pcap_cb(sctp, _From, _Path, 2, DataBin) ->
pcap_cb(sctp, _From, Path, 2, DataBin) ->
{ok, M2ua} = m2ua_codec:parse_m2ua_msg(DataBin),
handle_m2ua(M2ua).
M2uaReenc = m2ua_codec:encode_m2ua_msg(M2ua),
?assertEqualArgs(DataBin, M2uaReenc, [{layer, m2ua}, {path, Path}]),
handle_m2ua(M2ua, Path),
DataBin.
handle_m2ua(#m2ua_msg{msg_class = ?M2UA_MSGC_MAUP,
msg_type = ?M2UA_MAUP_MSGT_DATA,
parameters = Params}) ->
handle_m2ua(M2ua = #m2ua_msg{msg_class = ?M2UA_MSGC_MAUP,
msg_type = ?M2UA_MAUP_MSGT_DATA,
parameters = Params}, Path) ->
{_Len, M2uaPayload} = proplists:get_value(16#300, Params),
Mtp3 = mtp3_codec:parse_mtp3_msg(M2uaPayload),
handle_mtp3(Mtp3);
handle_m2ua(M2ua = #m2ua_msg{}) ->
Mtp3Reenc = mtp3_codec:encode_mtp3_msg(Mtp3),
?assertEqualArgs(M2uaPayload, Mtp3Reenc, [{layer, mtp3}, {path, Path}]),
handle_mtp3(Mtp3, Path ++ [M2ua]);
handle_m2ua(M2ua = #m2ua_msg{}, _Path) ->
M2ua.
handle_mtp3(#mtp3_msg{service_ind = ?MTP3_SERV_SCCP,
payload = Payload}) ->
handle_mtp3(Mtp3 = #mtp3_msg{service_ind = ?MTP3_SERV_SCCP,
payload = Payload}, Path) ->
{ok, SccpDec} = sccp_codec:parse_sccp_msg(Payload),
SccpEnc = handle_sccp(SccpDec);
handle_mtp3(Mtp3 = #mtp3_msg{}) ->
SccpReenc = sccp_codec:encode_sccp_msg(SccpDec),
% We cannot assume that the data is equal due to SCCP allowing
% different encodings of the same data. instead we re-decode
{ok, SccpReencDec} = sccp_codec:parse_sccp_msg(SccpReenc),
?assertEqualArgs(SccpDec, SccpReencDec, [{layer, sccp}, {path, Path}]),
handle_sccp(SccpDec, Path ++ [Mtp3]);
handle_mtp3(Mtp3 = #mtp3_msg{}, _Path) ->
Mtp3.
handle_sccp(S = #sccp_msg{msg_type = ?SCCP_MSGT_UDT, parameters = Params}) ->
handle_sccp(S = #sccp_msg{msg_type = ?SCCP_MSGT_UDT, parameters = Params}, Path) ->
UserData = proplists:get_value(user_data, Params),
MapDec = map_codec:parse_tcap_msg(UserData),
MapReEnc = map_codec:encode_tcap_msg(MapDec),
PathOut = Path ++ [S],
case map_codec:parse_tcap_msg(UserData) of
{error, Error} ->
ErrTuple = {Error, erlang:get_stacktrace(), []},
?debugFmt("Path: ~p~nMAP Decode Error: ~w~n", [PathOut, ErrTuple]),
erlang:error(ErrTuple);
MapDec ->
case map_codec:encode_tcap_msg(MapDec) of
{error, Error} ->
ErrTuple = {Error, erlang:get_stacktrace(), [{map_dec, MapDec}]},
?debugFmt("Path: ~p~nMAP Encode Error: ~w~n", [PathOut, ErrTuple]),
erlang:error(ErrTuple);
MapReenc ->
MapReencDec = map_codec:parse_tcap_msg(MapReenc),
?assertEqualArgs(MapDec, MapReencDec, [{layer, map}, {path, Path}])
end
end,
S;
handle_sccp(S = #sccp_msg{}) ->
handle_sccp(S = #sccp_msg{}, _Path) ->
S.