+ if !persist_manager_post_event {
+ nodes[0].node.write(&mut chan_manager_serialized).unwrap();
+ }
+
+ // Now persist the ChannelMonitor and inform the ChainMonitor that we're done, generating the
+ // payment sent event.
+ chanmon_cfgs[0].persister.set_update_ret(Ok(()));
+ let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
+ get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
+ nodes[0].chain_monitor.chain_monitor.channel_monitor_updated(funding_txo, mon_updates[0]).unwrap();
+ expect_payment_sent!(nodes[0], payment_preimage);
+
+ // If we persist the ChannelManager after we get the PaymentSent event, we shouldn't get it
+ // twice.
+ if persist_manager_post_event {
+ nodes[0].node.write(&mut chan_manager_serialized).unwrap();
+ }