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osmo-ttcn3-hacks
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bts: Add test csse for I frame with wrong C/R value 

Implemented as BTS_Tests_LAPDm.TC_incorrect_cr()

Related: OS#4032
Change-Id: I19e50049625bd31662a1e22b1394b69b2d249104
This commit is contained in:
Harald Welte 2019-06-02 23:23:45 +02:00
parent b399281d05
commit 44479781b0
1 changed files with 54 additions and 0 deletions
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54
bts/BTS_Tests_LAPDm.ttcn
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@ -999,6 +999,59 @@ testcase TC_rr_response_frame_loss() runs on test_CT {
f_testmatrix_each_chan(pars, refers(f_TC_rr_response_frame_loss));
}
/* Ensure BTS ignores I frames with wrong C/R bit; Inspired by TS 51.010-1 25.2.5.1 */
private function f_TC_incorrect_cr(charstring id) runs on ConnHdlr {
var RslLinkId link_id := valueof(ts_RslLinkID_DCCH(0));
var integer sapi := link_id.sapi;
var boolean is_sacch := false;
if (link_id.c == SACCH) {
is_sacch := true;
}
timer T := 3.0;
var default d;
fp_common_init();
/* some common altstep for meas res and other background noise */
d := activate(as_ignore_background(true));
RSL.clear;
LAPDM.clear;
f_establish_mo(link_id);
var octetstring l3_mo := f_rnd_octstring(10);
/* Send an I frame to the BTS: SAPI = 0, C = 0, P = 1, M = 0, L = 3, N(S) = 0, N(R) = 0 */
LAPDM.send(t_PH_DATA(0, is_sacch, ts_LAPDm_I(sapi, c_r:=cr_MO_RSP, p:=true, nr:=0, ns:=0,
l3:=l3_mo)));
T.start;
alt {
[] RSL.receive(tr_RSL_DATA_IND(g_chan_nr, link_id, l3_mo)) {
setverdict(fail, "BTS didn't ignore I frame with wrong C/R bit");
}
[] RSL.receive(tr_RSL_ERROR_IND(g_chan_nr, link_id, '0C'O)) {
repeat;
}
/* ensure BTS still sends idle frames */
[] as_lapdm_idle() {
setverdict(pass, "still sending idle frames");
}
[] T.timeout {}
}
/* Send RR command P=1 */
LAPDM.send(t_PH_DATA(0, is_sacch, ts_LAPDm_RR(sapi, c_r:=cr_MO_CMD, p:=true, nr:=0)));
/* The BTS shall respond with a RR response, F bit set to 1. */
LAPDM.receive(t_PH_DATA(0, is_sacch, tr_LAPDm_RR(sapi, c_r:=cr_MT_RSP, p:=true, nr:=0)));
deactivate(d);
fp_common_fini();
}
testcase TC_incorrect_cr() runs on test_CT {
var ConnHdlrPars pars := valueof(t_Pars(t_RslChanNr_Bm(1), ts_RSL_ChanMode_SIGN));
f_testmatrix_each_chan(pars, refers(f_TC_incorrect_cr));
}
control {
execute(TC_foo());
execute(TC_sabm_ua_dcch_sapi0());
@ -1017,6 +1070,7 @@ control {
execute(TC_segm_concat_sacch());
execute(TC_t200_n200());
execute(TC_rr_response_frame_loss());
execute(TC_incorrect_cr());
}
}