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hnbgw: Introduce test TC_{cs,ps}_rua_disconnect_during_sccp_cr_cc

Related: SYS#7208
Change-Id: Ie4fe4aaf77017f7191cf000331e452cded56cf25
---
M hnbgw/HNBGW_Tests.ttcn
M hnbgw/expected-results.xml
2 files changed, 45 insertions(+), 1 deletion(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/21/39121/1

diff --git a/hnbgw/HNBGW_Tests.ttcn b/hnbgw/HNBGW_Tests.ttcn
index ab6a09e..939a608 100644
--- a/hnbgw/HNBGW_Tests.ttcn
+++ b/hnbgw/HNBGW_Tests.ttcn
@@ -1429,6 +1429,46 @@
 	f_tc_ranap_creq_cref(8, true);
 }
 
+/* scenario: HNB transmits RUA Disconnect while conn is still being established
+ * on SCCP side (HNBGW sent CR, waiting for CC from CN). */
+private function f_tc_rua_disconnect_during_sccp_cr_cc(charstring id) runs on ConnHdlr {
+	/* HNB->MSC: InitialUE */
+	f_iuh2iu_connect(f_build_initial_ue(g_pars));
+
+	/* CREQ was received at CN, now HNB decides to disconnect the RUA conn: */
+	RUA.send(RUA_Disc_Req:{{misc:=unspecified}, omit});
+
+	/* Let some time for RUA Disconnect to reach the HNBGW: */
+	f_sleep(1.0);
+
+	/* Now tx SCCP CC from CN to HNBGW: */
+	BSSAP.send(ts_MSC_CONN_PRIM_CONNECT_RES);
+
+	/* now that SCCP conn is connected, HNBGW should tear it down because the RUA conn was released in previous step: */
+	BSSAP.receive(tr_MSC_CONN_PRIM_DISC_IND);
+	/* Let RAN_Emulation some time to answer RLSD with RLC: */
+	f_sleep(1.0);
+}
+private function f_TC_rua_disconnect_during_sccp_cr_cc(boolean is_ps) runs on test_CT {
+	var ConnHdlr vc_conn;
+	g_num_hnbs := 1;
+	/* Instruct RAN_Emulation to avoid accepting the conn, we'll trigger an
+	 * SCCP CREF by sending a DISC REQ primitive in ConnHdlr. */
+	g_ran_ops.ranap_connect_ind_auto_res := false;
+	f_init();
+
+	vc_conn := f_start_handler_with_pars(refers(f_tc_rua_disconnect_during_sccp_cr_cc), f_TestHdlrParams(6, is_ps));
+	vc_conn.done;
+
+	f_shutdown_helper();
+}
+testcase TC_cs_rua_disconnect_during_sccp_cr_cc() runs on test_CT {
+	f_TC_rua_disconnect_during_sccp_cr_cc(false);
+}
+testcase TC_ps_rua_disconnect_during_sccp_cr_cc() runs on test_CT {
+	f_TC_rua_disconnect_during_sccp_cr_cc(true);
+}
+
 /* Scenario: HNB tears down the RUA/Iu conn by first sending RUA_DATA[RANAP
  * IuReleaseReq], followed shortly by a RUA Disconnect with no RANAP and
  * Cause!=Normal. HNBGW should release the SCCP connection through RLSD since it's
@@ -2450,6 +2490,8 @@
 	execute(TC_ranap_ps_mo_disconnect());
 	execute(TC_ranap_cs_creq_cref());
 	execute(TC_ranap_ps_creq_cref());
+	execute(TC_ps_rua_disconnect_during_sccp_cr_cc());
+	execute(TC_cs_rua_disconnect_during_sccp_cr_cc());
 	execute(TC_cs_iu_release_req_rua_disconnect());
 	execute(TC_ps_iu_release_req_rua_disconnect());
 	execute(TC_ps_rab_assignment());
diff --git a/hnbgw/expected-results.xml b/hnbgw/expected-results.xml
index ad5a0f5..655db84 100644
--- a/hnbgw/expected-results.xml
+++ b/hnbgw/expected-results.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<testsuite name='Titan' tests='56' failures='0' errors='0' skipped='0' inconc='0' time='MASKED'>
+<testsuite name='Titan' tests='58' failures='0' errors='0' skipped='0' inconc='0' time='MASKED'>
   <testcase classname='HNBGW_Tests' name='TC_hnb_register' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_hnb_register_duplicate' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_hnb_register_duplicate_reuse_sctp_assoc' time='MASKED'/>
@@ -25,6 +25,8 @@
   <testcase classname='HNBGW_Tests' name='TC_ranap_ps_mo_disconnect' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_ranap_cs_creq_cref' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_ranap_ps_creq_cref' time='MASKED'/>
+  <testcase classname='HNBGW_Tests' name='TC_ps_rua_disconnect_during_sccp_cr_cc' time='MASKED'/>
+  <testcase classname='HNBGW_Tests' name='TC_cs_rua_disconnect_during_sccp_cr_cc' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_cs_iu_release_req_rua_disconnect' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_ps_iu_release_req_rua_disconnect' time='MASKED'/>
   <testcase classname='HNBGW_Tests' name='TC_ps_rab_assignment' time='MASKED'/>

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