f rename + better document test parameter

lightning/src/ln/functional_tests.rs

@@ -9262,7 +9262,7 @@ fn test_invalid_funding_tx() {
 	assert_eq!(nodes[1].node.list_channels().len(), 0);
 }
 
-fn do_test_tx_confirmed_skipping_blocks_immediate_broadcast(check_no_broadcast_too_early: bool) {
+fn do_test_tx_confirmed_skipping_blocks_immediate_broadcast(test_height_before_timelock: bool) {
 	// In the first version of the chain::Confirm interface, after a refactor was made to not
 	// broadcast CSV-locked transactions until their CSV lock is up, we wouldn't reliably broadcast
 	// transactions after a `transactions_confirmed` call. Specifically, if the chain, provided via
@@ -9276,6 +9276,9 @@ fn do_test_tx_confirmed_skipping_blocks_immediate_broadcast(check_no_broadcast_t
 	// height at which transactions were confirmed to `OnchainTx::update_claims_view`, it wasn't
 	// aware that the anti-reorg-delay had, in fact, already expired, waiting to fail-backwards
 	// until we learned about an additional block.
+	//
+	// As an additional check, if `test_height_before_timelock` is set, we instead test that we
+	// aren't broadcasting transactions too early (ie not broadcasting them at all).
 	let chanmon_cfgs = create_chanmon_cfgs(3);
 	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
 	let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
@@ -9295,14 +9298,12 @@ fn do_test_tx_confirmed_skipping_blocks_immediate_broadcast(check_no_broadcast_t
 	assert_eq!(node_txn.len(), 1);
 
 	let conf_height = nodes[1].best_block_info().1;
-	if !check_no_broadcast_too_early {
+	if !test_height_before_timelock {
 		connect_blocks(&nodes[1], 24 * 6);
-	} else {
-		// As an additional check, test that we aren't broadcasting transactions too early, either
 	}
 	nodes[1].chain_monitor.chain_monitor.transactions_confirmed(
 		&nodes[1].get_block_header(conf_height), &[(0, &node_txn[0])], conf_height);
-	if check_no_broadcast_too_early {
+	if test_height_before_timelock {
 		// If we confirmed the close transaction, but timelocks have not yet expired, we should not
 		// generate any events or broadcast any transactions
 		assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());