ns2: add a dummy test case TC_idle() for manual test cases

The TC_idle() won't be call by the control as this TC is only intended for manual
human based testing.

Change-Id: Ie1b5936447755dcaebd65396b7bb5cc3f31c17b5
diff --git a/ns/NS_Tests.ttcn b/ns/NS_Tests.ttcn
index a0b9216..af28cf1 100644
--- a/ns/NS_Tests.ttcn
+++ b/ns/NS_Tests.ttcn
@@ -676,6 +676,22 @@
 	f_clean_ns_codec();
 }
 
+testcase TC_idle() runs on RAW_Test_CT {
+	f_init_vty();
+	f_init_ns_codec(mp_nsconfig, guard_secs := 30.0);
+
+	/* do a NS Reset procedure */
+	f_outgoing_ns_reset();
+	activate(as_rx_alive_tx_ack());
+
+	f_outgoing_ns_unblock();
+	f_sleep(30.0);
+
+	setverdict(pass);
+	f_sleep(1.0);
+	f_clean_ns_codec();
+}
+
 control {
 	if (mp_dialect == NS2_DIALECT_STATIC_RESETBLOCK or mp_dialect == NS2_DIALECT_IPACCESS) {
 		execute( TC_tx_reset() );