From 6abb9fe76fc18fec3b35c5b63daee21774d9ed19 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Sat, 17 Feb 2018 15:24:48 +0100
Subject: sgsn: Add TC_detach_* for various GPRS DETACH use cases

Change-Id: I2243b850400482b911d687585929a2eef3490954
---
 sgsn/SGSN_Tests.ttcn | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

(limited to 'sgsn')

diff --git a/sgsn/SGSN_Tests.ttcn b/sgsn/SGSN_Tests.ttcn
index 9e00a13d..3cf16573 100644
--- a/sgsn/SGSN_Tests.ttcn
+++ b/sgsn/SGSN_Tests.ttcn
@@ -635,6 +635,92 @@ testcase TC_attach_rau() runs on test_CT {
 	vc_conn.done;
 }
 
+/* general GPRS DETACH helper */
+function f_detach_mo(BIT3 detach_type, boolean power_off, boolean expect_purge) runs on BSSGP_ConnHdlr {
+	var BssgpDecoded bd;
+	timer T := 5.0;
+	BSSGP.send(ts_GMM_DET_REQ_MO(detach_type, power_off));
+	if (expect_purge) {
+		GSUP.receive(tr_GSUP_PURGE_MS_REQ(g_pars.imsi, OSMO_GSUP_CN_DOMAIN_PS));
+		GSUP.send(ts_GSUP_PURGE_MS_RES(g_pars.imsi));
+	}
+	T.start;
+	alt {
+	[not expect_purge] GSUP.receive(tr_GSUP_PURGE_MS_REQ(?)) {
+		setverdict(fail, "Unexpected GSUP PURGE MS for unregistered TLLI");
+		}
+	[power_off] BSSGP.receive(tr_BD_L3_MT(tr_GMM_DET_ACCEPT_MT)) -> value bd {
+		g_pars.ra := omit;
+		setverdict(fail, "Unexpected ATTACH ACCEPT in no-power-off DETACH");
+		/* TODO: check if any PDP contexts are deactivated on network side? */
+		}
+	[power_off] T.timeout {
+		setverdict(pass);
+		}
+	[not power_off] BSSGP.receive(tr_BD_L3_MT(tr_GMM_DET_ACCEPT_MT)) -> value bd {
+		g_pars.ra := omit;
+		setverdict(pass);
+		/* TODO: check if any PDP contexts are deactivated on network side? */
+		}
+	[] BSSGP.receive { repeat; }
+	}
+}
+
+/* IMSI DETACH (non-power-off) for unknown TLLI */
+private function f_TC_detach_unknown_nopoweroff(charstring id) runs on BSSGP_ConnHdlr {
+	f_detach_mo(c_GMM_DTT_MO_GPRS, false, false);
+}
+testcase TC_detach_unknown_nopoweroff() runs on test_CT {
+	var BSSGP_ConnHdlr vc_conn;
+	f_init();
+	f_sleep(1.0);
+	vc_conn := f_start_handler(refers(f_TC_detach_unknown_nopoweroff), testcasename(), g_gb[0], 13);
+	vc_conn.done;
+}
+
+/* IMSI DETACH (power-off) for unknown TLLI */
+private function f_TC_detach_unknown_poweroff(charstring id) runs on BSSGP_ConnHdlr {
+	f_detach_mo(c_GMM_DTT_MO_GPRS,  true, false);
+}
+testcase TC_detach_unknown_poweroff() runs on test_CT {
+	var BSSGP_ConnHdlr vc_conn;
+	f_init();
+	f_sleep(1.0);
+	vc_conn := f_start_handler(refers(f_TC_detach_unknown_poweroff), testcasename(), g_gb[0], 14);
+	vc_conn.done;
+}
+
+/* IMSI DETACH (non-power-off) for known TLLI */
+private function f_TC_detach_nopoweroff(charstring id) runs on BSSGP_ConnHdlr {
+	/* first perform regular attach */
+	f_TC_attach(id);
+
+	f_detach_mo(c_GMM_DTT_MO_GPRS, false, true);
+}
+testcase TC_detach_nopoweroff() runs on test_CT {
+	var BSSGP_ConnHdlr vc_conn;
+	f_init();
+	f_sleep(1.0);
+	vc_conn := f_start_handler(refers(f_TC_detach_nopoweroff), testcasename(), g_gb[0], 15);
+	vc_conn.done;
+}
+
+/* IMSI DETACH (power-off) for known TLLI */
+private function f_TC_detach_poweroff(charstring id) runs on BSSGP_ConnHdlr {
+	/* first perform regular attach */
+	f_TC_attach(id);
+
+	f_detach_mo(c_GMM_DTT_MO_GPRS, true, true);
+}
+testcase TC_detach_poweroff() runs on test_CT {
+	var BSSGP_ConnHdlr vc_conn;
+	f_init();
+	f_sleep(1.0);
+	vc_conn := f_start_handler(refers(f_TC_detach_poweroff), testcasename(), g_gb[0], 16);
+	vc_conn.done;
+}
+
+
 
 
 control {
@@ -649,6 +735,10 @@ control {
 	execute( TC_attach_closed() );
 	execute( TC_rau_unknown() );
 	execute( TC_attach_rau() );
+	execute( TC_detach_unknown_nopoweroff() );
+	execute( TC_detach_unknown_poweroff() );
+	execute( TC_detach_nopoweroff() );
+	execute( TC_detach_poweroff() );
 }
 
 
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