SGSN: introduce NS tests

Similiar to the PCU_Tests_NS introduce SGSN_Tests_NS.

Change-Id: Ib2bffbb110961474928f35d212cb492d4b6fdee0

sgsn/SGSN_Tests.cfg

@@ -42,3 +42,4 @@ SGSN_Tests.mp_ggsn_ip := "127.0.0.103"
 [EXECUTE]
 SGSN_Tests.control
 SGSN_Tests_Iu.control
+SGSN_Tests_NS.control

sgsn/SGSN_Tests.ttcn

@@ -12,6 +12,7 @@ module SGSN_Tests {
  */
 
 friend module SGSN_Tests_Iu;
+friend module SGSN_Tests_NS;
 
 import from General_Types all;
 import from Osmocom_Types all;
@@ -257,7 +258,7 @@ private function f_init_gtp(charstring id) runs on test_CT {
 	vc_GTP.start(GTP_Emulation.main(gtp_cfg));
 }
 
-private function f_init_vty() runs on test_CT {
+friend function f_init_vty() runs on test_CT {
 	map(self:SGSNVTY, system:SGSNVTY);
 	f_vty_set_prompts(SGSNVTY);
 	f_vty_transceive(SGSNVTY, "enable");

sgsn/SGSN_Tests_NS.ttcn

@@ -0,0 +1,58 @@
+module SGSN_Tests_NS {
+
+/* Osmocom SGSN test suite in TTCN-3
+ * (C) 2020 sysmocom - s.f.m.c. GmbH
+ * All rights reserved.
+ *
+ * Released under the terms of GNU General Public License, Version 2 or
+ * (at your option) any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+import from Osmocom_Types all;
+import from Osmocom_Gb_Types all;
+import from Osmocom_VTY_Functions all;
+import from NS_CodecPort all;
+import from NS_Types all;
+import from RAW_NS all;
+import from SGSN_Tests all;
+
+type component RAW_Test_CT extends RAW_NS_CT, test_CT {
+}
+
+testcase TC_NS_connect_reset() runs on RAW_Test_CT {
+	f_init_vty();
+	f_init_ns_codec(mp_nsconfig[0], guard_secs := 10.0, tc_offset := 10);
+	f_vty_config(SGSNVTY, "ns", "encapsulation udp use-reset-block-unblock enabled");
+
+	/* Send a NS-ALIVE */
+	f_outgoing_ns_reset();
+
+	f_sleep(1.0);
+	f_cleanup();
+}
+
+testcase TC_NS_connect_alive() runs on RAW_Test_CT {
+	f_init_vty();
+	f_init_ns_codec(mp_nsconfig[0], guard_secs := 10.0, tc_offset := 20);
+	f_vty_config(SGSNVTY, "ns", "encapsulation udp use-reset-block-unblock disabled");
+
+	/* Send a NS-ALIVE */
+	NSCP[0].send(t_NS_Send(g_ns_conn_id[0], t_NS_ALIVE));
+	alt {
+	[] NSCP[0].receive(t_NS_RecvFrom(t_NS_ALIVE_ACK));
+	[] NSCP[0].receive(t_NS_RecvFrom(tr_NS_STATUS(*))) { setverdict(fail); }
+	[] NSCP[0].receive { repeat; }
+	}
+
+	f_sleep(1.0);
+	f_cleanup();
+}
+
+control {
+	execute( TC_NS_connect_alive() );
+	execute( TC_NS_connect_reset() );
+}
+
+}

sgsn/gen_links.sh

@@ -92,8 +92,7 @@ FILES+="LLC_Templates.ttcn L3_Templates.ttcn L3_Common.ttcn "
 FILES+="RAN_Emulation.ttcnpp RAN_Adapter.ttcnpp SCCP_Templates.ttcn "
 # IPA_Emulation + dependencies
 FILES+="IPA_Types.ttcn IPA_Emulation.ttcnpp IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc Native_Functions.ttcn Native_FunctionDefs.cc GSUP_Types.ttcn GSUP_Emulation.ttcn "
-FILES+="GTP_CodecPort.ttcn GTP_CodecPort_CtrlFunct.ttcn GTP_CodecPort_CtrlFunctDef.cc GTP_Emulation.ttcn
-GTP_Templates.ttcn IPCP_Types.ttcn "
+FILES+="GTP_CodecPort.ttcn GTP_CodecPort_CtrlFunct.ttcn GTP_CodecPort_CtrlFunctDef.cc GTP_Emulation.ttcn GTP_Templates.ttcn IPCP_Types.ttcn RAW_NS.ttcn "
 gen_links $DIR $FILES
 
 ignore_pp_results