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gbproxy: Add test for load sharing function in SGSN->PCU direction 

Related: SYS#5209
Change-Id: Ide733d7659ff7f341bedc61fc90947f74d7c4ac3
This commit is contained in:
Harald Welte 2020-11-18 12:16:59 +01:00
parent 80a249aa07
commit f8ef028c9f
1 changed files with 77 additions and 0 deletions
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77
gbproxy/GBProxy_Tests.ttcn
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@ -861,6 +861,79 @@ testcase TC_resume() runs on test_CT
f_cleanup();
}
/* test the load-sharing between multiple NS-VC on the BSS side */
private function f_TC_dl_ud_unidir(charstring id) runs on BSSGP_ConnHdlr {
var integer i;
for (i := 0; i < 10; i := i+1) {
var octetstring payload := f_rnd_octstring(i);
var template (value) PDU_BSSGP pdu_tx :=
ts_BSSGP_DL_UD(g_pars.tlli, payload, omit, ts_BSSGP_IMSI(g_pars.imsi));
SGSN[0].send(pdu_tx);
}
setverdict(pass);
}
testcase TC_load_sharing_dl() runs on test_CT_NS
{
const integer num_ue := 10;
var BSSGP_ConnHdlr vc_conn[num_ue];
f_init();
/* all BVC are now fully brought up. We disconnect BSSGP from NS on the BSS
* side so we get the raw NsUnitdataIndication and hence observe different
* NSVCI */
disconnect(g_pcu[0].vc_NS:NS_SP, g_pcu[0].vc_BSSGP:BSCP);
connect(g_pcu[0].vc_NS:NS_SP, self:NS);
/* there may still be some NS-VCs coming up? After all, the BVC-RESET succeeds after the first
* of the NS-VC is ALIVE/UNBLOCKED */
f_sleep(3.0);
/* start parallel components generating DL-UNITDATA from the SGSN side */
for (var integer i:= 0; i < num_ue; i := i+1) {
vc_conn[i] := f_start_handler(refers(f_TC_dl_ud_unidir), testcasename(), g_pcu, g_sgsn, 5+i);
}
/* now start counting all the messages that were queued before */
/* TODO: We have a hard-coded assumption of 4 NS-VC in one NSE/NS-VCG here! */
var ro_integer rx_count := { 0, 0, 0, 0 };
timer T := 2.0;
T.start;
alt {
[] as_NsUdiCount(0, rx_count);
[] as_NsUdiCount(1, rx_count);
[] as_NsUdiCount(2, rx_count);
[] as_NsUdiCount(3, rx_count);
[] NS.receive(NsUnitdataIndication:{0,?,?,*,*}) { repeat; } /* signaling BVC */
[] NS.receive(NsStatusIndication:?) { repeat; }
[] NS.receive {
setverdict(fail, "Rx unexpected NS");
mtc.stop;
}
[] T.timeout {
}
}
for (var integer i := 0; i < lengthof(rx_count); i := i+1) {
log("Rx on NSVCI ", mp_nsconfig_pcu[0].nsvc[i].nsvci, ": ", rx_count[i]);
if (rx_count[i] == 0) {
setverdict(fail, "Data not shared over all NSVC");
}
}
setverdict(pass);
}
private altstep as_NsUdiCount(integer nsvc_idx, inout ro_integer roi) runs on test_CT_NS {
var NsUnitdataIndication udi;
var BssgpBvcConfig bvcc := g_pcu[0].cfg.bvc[0];
[] NS.receive(NsUnitdataIndication:{bvcc.bvci, g_pcu[0].cfg.nsei, mp_nsconfig_pcu[0].nsvc[nsvc_idx].nsvci, *, *}) -> value udi {
roi[nsvc_idx] := roi[nsvc_idx] + 1;
repeat;
}
}
type component test_CT_NS extends test_CT {
port NS_PT NS;
};
control {
execute( TC_BVC_bringup() );
@ -871,6 +944,10 @@ control {
execute( TC_radio_status() );
execute( TC_suspend() );
execute( TC_resume() );
if (false) {
/* don't enable this by default, as we don't yet have any automatic test setup for FR with 4 NS-VC */
execute( TC_load_sharing_dl() );
}
}