+{
+ local sess_name=$1
+ local event_name="$2"
+ local channel_name=$3
+ local expected_to_fail=$4
+
+ if [ -z $channel_name ]; then
+ # default channel if none specified
+ chan=""
+ else
+ chan="-c $channel_name"
+ fi
+
+ $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -u >$OUTPUT_DEST
+ ret=$?
+ if [[ $expected_to_fail ]]; then
+ test $ret -ne "0"
+ ok $? "Enable ust event $event_name for session $session_name on channel $channel_name failed as expected"
+ else
+ ok $ret "Enable event $event_name for session $sess_name"
+ fi
+}
+
+function enable_jul_lttng_event()