Add util to create private channels between nodes

Author: ViktorT-11

lightning/src/ln/functional_test_utils.rs

@@ -738,6 +738,38 @@ pub fn update_nodes_with_chan_announce<'a, 'b, 'c, 'd>(nodes: &'a Vec<Node<'b, '
 	}
 }
 
+pub fn create_private_chan_between_nodes_with_value<'a, 'b, 'c, 'd>(nodes: &'a Vec<Node<'b, 'c, 'd>>, a: usize, b: usize, channel_value: u64, push_msat: u64, a_flags: InitFeatures, b_flags: InitFeatures) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) {
+	if nodes[a].node.get_current_default_configuration().channel_options.announced_channel {
+		panic!("`Nodes[a]` must have channel_options.announced_channel set to false")
+	}
+	nodes[a].node.create_channel(nodes[b].node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
+	let open_channel = get_event_msg!(nodes[a], MessageSendEvent::SendOpenChannel, nodes[b].node.get_our_node_id());
+	nodes[b].node.handle_open_channel(&nodes[a].node.get_our_node_id(), a_flags, &open_channel);
+	let accept_channel = get_event_msg!(nodes[b], MessageSendEvent::SendAcceptChannel, nodes[a].node.get_our_node_id());
+	nodes[a].node.handle_accept_channel(&nodes[b].node.get_our_node_id(), b_flags, &accept_channel);
+
+	let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[a], channel_value, 42);
+	nodes[a].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
+	nodes[b].node.handle_funding_created(&nodes[a].node.get_our_node_id(), &get_event_msg!(nodes[a], MessageSendEvent::SendFundingCreated, nodes[b].node.get_our_node_id()));
+	check_added_monitors!(nodes[b], 1);
+
+	let cs_funding_signed = get_event_msg!(nodes[b], MessageSendEvent::SendFundingSigned, nodes[a].node.get_our_node_id());
+	nodes[a].node.handle_funding_signed(&nodes[b].node.get_our_node_id(), &cs_funding_signed);
+	check_added_monitors!(nodes[a], 1);
+
+	let conf_height = core::cmp::max(nodes[a].best_block_info().1 + 1, nodes[b].best_block_info().1 + 1);
+	confirm_transaction_at(&nodes[a], &tx, conf_height);
+	connect_blocks(&nodes[a], CHAN_CONFIRM_DEPTH - 1);
+	confirm_transaction_at(&nodes[b], &tx, conf_height);
+	connect_blocks(&nodes[b], CHAN_CONFIRM_DEPTH - 1);
+	let as_funding_locked = get_event_msg!(nodes[a], MessageSendEvent::SendFundingLocked, nodes[b].node.get_our_node_id());
+	nodes[a].node.handle_funding_locked(&nodes[b].node.get_our_node_id(), &get_event_msg!(nodes[b], MessageSendEvent::SendFundingLocked, nodes[a].node.get_our_node_id()));
+	let a_update = get_event_msg!(nodes[a], MessageSendEvent::SendChannelUpdate, nodes[b].node.get_our_node_id());
+	nodes[b].node.handle_funding_locked(&nodes[a].node.get_our_node_id(), &as_funding_locked);
+	let b_update = get_event_msg!(nodes[b], MessageSendEvent::SendChannelUpdate, nodes[a].node.get_our_node_id());
+	(a_update, b_update, as_funding_locked.channel_id.clone(), tx)
+}
+
 #[macro_export]
 macro_rules! check_spends {
 	($tx: expr, $($spends_txn: expr),*) => {