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s1gw: add TC_e_rab_setup_failure

Change-Id: I97102292678e732265dcae04d60f7a708a5246dc
Related: osmo-s1gw.git I242e84fb09b00f4794b6e1aa770f348a0e60aea4
---
M s1gw/S1GW_Tests.ttcn
M s1gw/expected-results.xml
2 files changed, 54 insertions(+), 1 deletion(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/10/38310/1

diff --git a/s1gw/S1GW_Tests.ttcn b/s1gw/S1GW_Tests.ttcn
index baede7d..6f4562b 100644
--- a/s1gw/S1GW_Tests.ttcn
+++ b/s1gw/S1GW_Tests.ttcn
@@ -367,6 +367,57 @@
 	vc_conn.done;
 }
 
+/* Test E-RAB SETUP procedure being aborted by the S1GW due to
+ * PFCP Session Establishment failure (cause=REQUEST_REJECTED). */
+function f_TC_e_rab_setup_failure(charstring id) runs on ConnHdlr {
+	var OCT4 addr := f_inet_addr(g_pars.pfcp_loc_addr);
+	var ERab erab := g_pars.erabs[0];
+
+	f_ConnHdlr_s1ap_register(g_pars.genb_id);
+	f_ConnHdlr_s1ap_connect(mp_enb_bind_ip, mp_s1gw_enb_ip);
+	f_ConnHdlr_s1ap_setup(g_pars.genb_id);
+
+	/* see comments in f_ConnHdlr_erab_setup_req() */
+	f_PFCPEM_subscribe_seid('0000000000000000'O);
+	f_PFCPEM_subscribe_seid(erab.pfcp_loc_seid);
+
+	log("eNB <- [S1GW <- MME]: E-RAB SETUP REQUEST");
+	f_ConnHdlr_tx_erab_setup_req({erab});
+	log("UPF <- S1GW: PFCP Session Establishment Request");
+	var PDU_PFCP req := f_ConnHdlr_rx_session_establish_req(erab);
+	/* store peer's SEID, so that it can be used in outgoing PDUs later */
+	erab.pfcp_rem_seid := req.message_body.pfcp_session_establishment_request.CP_F_SEID.seid;
+
+	log("UPF -> S1GW: PFCP Session Establishment Response (failure)");
+	var template (value) PDU_PFCP resp;
+	resp := ts_PFCP_Session_Est_Resp(seq_nr := req.sequence_number,
+					 node_id := ts_PFCP_Node_ID_ipv4(addr),
+					 seid := erab.pfcp_rem_seid,
+					 f_seid := ts_PFCP_F_SEID_ipv4(addr, erab.pfcp_loc_seid),
+					 created_pdr := {},
+					 cause := ts_PFCP_Cause(REQUEST_REJECTED));
+	PFCP.send(resp);
+
+	/* see comments in f_ConnHdlr_erab_setup_req() */
+	f_PFCPEM_unsubscribe_seid('0000000000000000'O);
+	f_PFCPEM_unsubscribe_seid(erab.pfcp_loc_seid);
+
+	var S1AP_PDU s1ap_pdu; /* XXX: expect E-RAB SETUP RESPONSE here */
+	f_ConnHdlr_rx_s1ap_from_enb(s1ap_pdu);
+
+	f_ConnHdlr_s1ap_disconnect();
+	f_ConnHdlr_s1ap_unregister(g_pars.genb_id);
+}
+testcase TC_e_rab_setup_failure() runs on test_CT {
+	var ConnHdlrPars pars := valueof(t_ConnHdlrPars);
+	var ConnHdlr vc_conn;
+
+	f_init();
+
+	vc_conn := f_ConnHdlr_spawn(refers(f_TC_e_rab_setup_failure), pars);
+	vc_conn.done;
+}
+
 /* Test INITIAL CONTEXT SETUP procedure (successful case) */
 function f_TC_initial_ctx_setup(charstring id) runs on ConnHdlr {
 	f_ConnHdlr_s1ap_register(g_pars.genb_id);
@@ -484,6 +535,7 @@
 	execute( TC_e_rab_setup_multi() );
 	execute( TC_e_rab_setup3_multi() );
 	execute( TC_e_rab_release_ind() );
+	execute( TC_e_rab_setup_failure() );
 	execute( TC_initial_ctx_setup() );
 	execute( TC_initial_ctx_setup3() );
 	execute( TC_initial_ctx_setup_multi() );
diff --git a/s1gw/expected-results.xml b/s1gw/expected-results.xml
index 3ddbb23..c6995c9 100644
--- a/s1gw/expected-results.xml
+++ b/s1gw/expected-results.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<testsuite name='S1GW_Tests' tests='15' failures='0' errors='0' skipped='0' inconc='0' time='MASKED'>
+<testsuite name='S1GW_Tests' tests='16' failures='0' errors='0' skipped='0' inconc='0' time='MASKED'>
   <testcase classname='S1GW_Tests' name='TC_setup' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_setup_multi' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_conn_term_by_mme' time='MASKED'/>
@@ -9,6 +9,7 @@
   <testcase classname='S1GW_Tests' name='TC_e_rab_setup_multi' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_e_rab_setup3_multi' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_e_rab_release_ind' time='MASKED'/>
+  <testcase classname='S1GW_Tests' name='TC_e_rab_setup_failure' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_initial_ctx_setup' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_initial_ctx_setup3' time='MASKED'/>
   <testcase classname='S1GW_Tests' name='TC_initial_ctx_setup_multi' time='MASKED'/>

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