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osmo-ttcn3-hacks
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msc: add TC_cmserv_tmsi_unknown() 

We already have TC_cmserv_imsi_unknown, but lack a test that shows CM Service
Request behavior for an unknown TMSI.

Looking at OS#4721 I vaguely expected an ID Request to also happen during CM
Service Request, but instead we reject the unknown TMSI completely, and require
the MS to perform a proper LU subsequently.

Related: OS#4721
Change-Id: I54e5efcf4c31625205c99338379a2055633acde9
This commit is contained in:
Neels Hofmeyr 2020-08-19 13:16:14 +00:00 committed by laforge
parent fc06c73f39
commit 13737fbb5d
1 changed files with 38 additions and 0 deletions
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38
msc/MSC_Tests.ttcn
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@ -673,6 +673,43 @@ testcase TC_cmserv_imsi_unknown() runs on MTC_CT {
}
/* Send CM SERVICE REQ for TMSI that has never performed LU before */
friend function f_tc_cmserv_tmsi_unknown(charstring id, BSC_ConnHdlrPars pars)
runs on BSC_ConnHdlr {
f_init_handler(pars);
var MobileIdentityLV mi := valueof(ts_MI_TMSI_LV('57111111'O));
var BSSMAP_IE_CellIdentifier cell_id := valueof(ts_CellId_CGI('262'H, '42'H, 23, 42));
var PDU_ML3_MS_NW l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, mi));
/* Send BSSAP_Conn_Req with COMPL L3 INFO to MSC */
f_cl3_or_initial_ue(l3_info);
f_mm_auth();
timer T := 10.0;
T.start;
alt {
[] BSSAP.receive(tr_PDU_DTAP_MT(tr_CM_SERV_REJ)) { }
[] BSSAP.receive {
setverdict(fail, "Received unexpected BSSAP");
mtc.stop;
}
[] T.timeout {
setverdict(fail, "Timeout waiting for CM SERV REJ");
mtc.stop;
}
}
f_expect_clear();
}
testcase TC_cmserv_tmsi_unknown() runs on MTC_CT {
var BSC_ConnHdlr vc_conn;
f_init();
vc_conn := f_start_handler(refers(f_tc_cmserv_tmsi_unknown), 57, verify_cell_id := false);
vc_conn.done;
}
friend function f_tc_lu_and_mo_call(charstring id, BSC_ConnHdlrPars pars) runs on BSC_ConnHdlr {
f_init_handler(pars);
var CallParameters cpars := valueof(t_CallParams);
@ -6159,6 +6196,7 @@ control {
execute( TC_lu_imsi_auth3g_tmsi() );
execute( TC_lu_imsi_timeout_tmsi_realloc() );
execute( TC_cmserv_imsi_unknown() );
execute( TC_cmserv_tmsi_unknown() );
execute( TC_lu_and_mo_call() );
execute( TC_lu_and_mo_call_sccp_tiar_timeout() );
execute( TC_lu_auth_sai_timeout() );