nodes[0].node.timer_tick_occurred(); // DisabledStaged -> Disabled
let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(msg_events.len(), 3);
nodes[0].node.timer_tick_occurred(); // DisabledStaged -> Disabled
let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(msg_events.len(), 3);