msc: Add TC_establish_and_nothing

Change-Id: Ia8782558d8570750fd95c2b41953aaa61839ef8c
Related: OS#2879
diff --git a/msc_tests/MSC_Tests.ttcn b/msc_tests/MSC_Tests.ttcn
index c5ab892..f26a825 100644
--- a/msc_tests/MSC_Tests.ttcn
+++ b/msc_tests/MSC_Tests.ttcn
@@ -1136,6 +1136,35 @@
 	vc_conn.done;
 }
 
+/* Test Complete L3 with random payload */
+private function f_tc_establish_and_nothing(charstring id, BSC_ConnHdlrPars pars) runs on BSC_ConnHdlr {
+	g_pars := pars;
+
+	f_perform_lu(false, true, true, false);
+
+	f_establish_fully(valueof(ts_MI_IMSI_LV(g_pars.imsi)), false, false);
+	timer T := 30.0;
+	alt {
+	[] T.timeout { setverdict(fail, "Timeout waiting for channel release"); }
+	[] BSSAP.receive(tr_BSSMAP_ClearCommand) {
+		BSSAP.send(ts_BSSMAP_ClearComplete);
+		BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND);
+		setverdict(pass);
+		}
+	[] BSSAP.receive { repeat; }
+	[] MNCC.receive { repeat; }
+	[] GSUP.receive { repeat; }
+	[] MGCP.receive { repeat; }
+	}
+}
+testcase TC_establish_and_nothing() runs on MTC_CT {
+	var BSC_ConnHdlr vc_conn;
+	f_init();
+
+	vc_conn := f_start_handler(refers(f_tc_establish_and_nothing), testcasename(), 25);
+	vc_conn.done;
+}
+
 
 /* TODO:
    * continue to send repeated MO signalling messages to keep channel open: does MSC tmeout?