ln/fmt: move rustfmt_skip to per-function in blinded_payment_tests

diff --git a/lightning/src/ln/blinded_payment_tests.rs b/lightning/src/ln/blinded_payment_tests.rs
index 3dd6274..c30a741 100644
--- a/lightning/src/ln/blinded_payment_tests.rs
+++ b/lightning/src/ln/blinded_payment_tests.rs
@@ -1,5 +1,3 @@
-#![cfg_attr(rustfmt, rustfmt_skip)]
-
 // This file is Copyright its original authors, visible in version control
 // history.
 //
@@ -9,38 +7,42 @@
 // You may not use this file except in accordance with one or both of these
 // licenses.
 
-use bitcoin::hex::DisplayHex;
-use bitcoin::secp256k1::{PublicKey, Scalar, Secp256k1, SecretKey, schnorr};
-use bitcoin::secp256k1::ecdh::SharedSecret;
-use bitcoin::secp256k1::ecdsa::{RecoverableSignature, Signature};
-use crate::blinded_path;
-use crate::blinded_path::payment::{BlindedPaymentPath, Bolt12RefundContext, ForwardTlvs, PaymentConstraints, PaymentContext, PaymentForwardNode, PaymentRelay, ReceiveTlvs, PAYMENT_PADDING_ROUND_OFF};
+use crate::blinded_path::payment::{
+	BlindedPaymentPath, Bolt12RefundContext, ForwardTlvs, PaymentConstraints, PaymentContext,
+	PaymentForwardNode, PaymentRelay, ReceiveTlvs, PAYMENT_PADDING_ROUND_OFF,
+};
 use crate::blinded_path::utils::is_padded;
+use crate::blinded_path::{self, BlindedHop};
 use crate::events::{Event, HTLCHandlingFailureType, PaymentFailureReason};
-use crate::ln::types::ChannelId;
-use crate::types::payment::{PaymentHash, PaymentSecret};
-use crate::ln::channelmanager;
-use crate::ln::channelmanager::{HTLCFailureMsg, PaymentId, RecipientOnionFields};
-use crate::types::features::{BlindedHopFeatures, ChannelFeatures, NodeFeatures};
+use crate::ln::channelmanager::{self, HTLCFailureMsg, PaymentId, RecipientOnionFields};
 use crate::ln::functional_test_utils::*;
 use crate::ln::inbound_payment::ExpandedKey;
-use crate::ln::msgs;
-use crate::ln::msgs::{BaseMessageHandler, ChannelMessageHandler, UnsignedGossipMessage, MessageSendEvent};
+use crate::ln::msgs::{
+	self, BaseMessageHandler, ChannelMessageHandler, MessageSendEvent, UnsignedGossipMessage,
+};
 use crate::ln::onion_payment;
 use crate::ln::onion_utils::{self, LocalHTLCFailureReason};
 use crate::ln::outbound_payment::{Retry, IDEMPOTENCY_TIMEOUT_TICKS};
+use crate::ln::types::ChannelId;
 use crate::offers::invoice::UnsignedBolt12Invoice;
 use crate::prelude::*;
-use crate::routing::router::{BlindedTail, Path, Payee, PaymentParameters, RouteHop, RouteParameters, TrampolineHop};
+use crate::routing::router::{
+	BlindedTail, Path, Payee, PaymentParameters, Route, RouteHop, RouteParameters, TrampolineHop,
+};
 use crate::sign::{NodeSigner, PeerStorageKey, ReceiveAuthKey, Recipient};
+use crate::types::features::{BlindedHopFeatures, ChannelFeatures, NodeFeatures};
+use crate::types::payment::{PaymentHash, PaymentSecret};
 use crate::util::config::UserConfig;
 use crate::util::ser::{WithoutLength, Writeable};
-use crate::util::test_utils::{self, bytes_from_hex, secret_from_hex, pubkey_from_hex};
+use crate::util::test_utils::{self, bytes_from_hex, pubkey_from_hex, secret_from_hex};
+use bitcoin::hex::DisplayHex;
+use bitcoin::secp256k1::ecdh::SharedSecret;
+use bitcoin::secp256k1::ecdsa::{RecoverableSignature, Signature};
+use bitcoin::secp256k1::{schnorr, PublicKey, Scalar, Secp256k1, SecretKey};
 use lightning_invoice::RawBolt11Invoice;
 use types::features::Features;
-use crate::blinded_path::BlindedHop;
-use crate::routing::router::Route;
 
+#[rustfmt::skip]
 pub fn blinded_payment_path(
 	payment_secret: PaymentSecret, intro_node_min_htlc: u64, intro_node_max_htlc: u64,
 	node_ids: Vec<PublicKey>, channel_upds: &[&msgs::UnsignedChannelUpdate],
@@ -93,20 +95,24 @@ pub fn blinded_payment_path(
 }
 
 pub fn get_blinded_route_parameters(
-	amt_msat: u64, payment_secret: PaymentSecret, intro_node_min_htlc: u64, intro_node_max_htlc: u64,
-	node_ids: Vec<PublicKey>, channel_upds: &[&msgs::UnsignedChannelUpdate],
-	keys_manager: &test_utils::TestKeysInterface
+	amt_msat: u64, payment_secret: PaymentSecret, intro_node_min_htlc: u64,
+	intro_node_max_htlc: u64, node_ids: Vec<PublicKey>,
+	channel_upds: &[&msgs::UnsignedChannelUpdate], keys_manager: &test_utils::TestKeysInterface,
 ) -> RouteParameters {
 	RouteParameters::from_payment_params_and_value(
-		PaymentParameters::blinded(vec![
-			blinded_payment_path(
-				payment_secret, intro_node_min_htlc, intro_node_max_htlc, node_ids, channel_upds,
-				keys_manager
-			)
-		]), amt_msat
+		PaymentParameters::blinded(vec![blinded_payment_path(
+			payment_secret,
+			intro_node_min_htlc,
+			intro_node_max_htlc,
+			node_ids,
+			channel_upds,
+			keys_manager,
+		)]),
+		amt_msat,
 	)
 }
 
+#[rustfmt::skip]
 pub fn fail_blinded_htlc_backwards(
 	payment_hash: PaymentHash, intro_node_idx: usize, nodes: &[&Node],
 	retry_expected: bool
@@ -148,6 +154,7 @@ fn one_hop_blinded_path() {
 	do_one_hop_blinded_path(false);
 }
 
+#[rustfmt::skip]
 fn do_one_hop_blinded_path(success: bool) {
 	let chanmon_cfgs = create_chanmon_cfgs(2);
 	let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
@@ -190,6 +197,7 @@ fn do_one_hop_blinded_path(success: bool) {
 }
 
 #[test]
+#[rustfmt::skip]
 fn mpp_to_one_hop_blinded_path() {
 	let chanmon_cfgs = create_chanmon_cfgs(4);
 	let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
@@ -269,6 +277,7 @@ fn mpp_to_one_hop_blinded_path() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn mpp_to_three_hop_blinded_paths() {
 	let chanmon_cfgs = create_chanmon_cfgs(6);
 	let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
@@ -362,6 +371,7 @@ fn forward_checks_failure() {
 	do_forward_checks_failure(ForwardCheckFail::OutboundChannelCheck, false);
 }
 
+#[rustfmt::skip]
 fn do_forward_checks_failure(check: ForwardCheckFail, intro_fails: bool) {
 	// Ensure we'll fail backwards properly if a forwarding check fails on initial update_add
 	// receipt.
@@ -499,6 +509,7 @@ fn do_forward_checks_failure(check: ForwardCheckFail, intro_fails: bool) {
 }
 
 #[test]
+#[rustfmt::skip]
 fn failed_backwards_to_intro_node() {
 	// Ensure the intro node will error backwards properly even if the downstream node did not blind
 	// their error.
@@ -569,12 +580,14 @@ enum ProcessPendingHTLCsCheck {
 }
 
 #[test]
+#[rustfmt::skip]
 fn forward_fail_in_process_pending_htlc_fwds() {
 	do_forward_fail_in_process_pending_htlc_fwds(ProcessPendingHTLCsCheck::FwdPeerDisconnected, true);
 	do_forward_fail_in_process_pending_htlc_fwds(ProcessPendingHTLCsCheck::FwdPeerDisconnected, false);
 	do_forward_fail_in_process_pending_htlc_fwds(ProcessPendingHTLCsCheck::FwdChannelClosed, true);
 	do_forward_fail_in_process_pending_htlc_fwds(ProcessPendingHTLCsCheck::FwdChannelClosed, false);
 }
+#[rustfmt::skip]
 fn do_forward_fail_in_process_pending_htlc_fwds(check: ProcessPendingHTLCsCheck, intro_fails: bool) {
 	// Ensure the intro node will error backwards properly if the HTLC fails in
 	// process_pending_htlc_forwards.
@@ -684,6 +697,8 @@ fn blinded_intercept_payment() {
 	do_blinded_intercept_payment(true);
 	do_blinded_intercept_payment(false);
 }
+
+#[rustfmt::skip]
 fn do_blinded_intercept_payment(intercept_node_fails: bool) {
 	let chanmon_cfgs = create_chanmon_cfgs(3);
 	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
@@ -766,6 +781,7 @@ fn do_blinded_intercept_payment(intercept_node_fails: bool) {
 }
 
 #[test]
+#[rustfmt::skip]
 fn two_hop_blinded_path_success() {
 	let chanmon_cfgs = create_chanmon_cfgs(3);
 	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
@@ -787,6 +803,7 @@ fn two_hop_blinded_path_success() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn three_hop_blinded_path_success() {
 	let chanmon_cfgs = create_chanmon_cfgs(5);
 	let node_cfgs = create_node_cfgs(5, &chanmon_cfgs);
@@ -816,6 +833,7 @@ fn three_hop_blinded_path_success() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn three_hop_blinded_path_fail() {
 	// Test that an intermediate blinded forwarding node gets failed back to with
 	// malformed and also fails back themselves with malformed.
@@ -875,6 +893,7 @@ fn multi_hop_receiver_fail() {
 	do_multi_hop_receiver_fail(ReceiveCheckFail::PaymentConstraints);
 }
 
+#[rustfmt::skip]
 fn do_multi_hop_receiver_fail(check: ReceiveCheckFail) {
 	// Test that the receiver to a multihop blinded path fails back correctly.
 	let chanmon_cfgs = create_chanmon_cfgs(3);
@@ -1075,6 +1094,7 @@ fn do_multi_hop_receiver_fail(check: ReceiveCheckFail) {
 }
 
 #[test]
+#[rustfmt::skip]
 fn blinded_path_retries() {
 	let chanmon_cfgs = create_chanmon_cfgs(4);
 	// Make one blinded path's fees slightly higher so they are tried in a deterministic order.
@@ -1182,6 +1202,7 @@ fn blinded_path_retries() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn min_htlc() {
 	// The min htlc of a blinded path is the max (htlc_min - following_fees) along the path. Make sure
 	// the payment succeeds when we calculate the min htlc this way.
@@ -1258,6 +1279,7 @@ fn min_htlc() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn conditionally_round_fwd_amt() {
 	// Previously, the (rng-found) feerates below caught a bug where an intermediate node would
 	// calculate an amt_to_forward that underpaid them by 1 msat, caused by rounding up the outbound
@@ -1308,8 +1330,8 @@ fn conditionally_round_fwd_amt() {
 	expect_payment_sent(&nodes[0], payment_preimage, Some(Some(expected_fee)), true, true);
 }
 
-
 #[test]
+#[rustfmt::skip]
 fn custom_tlvs_to_blinded_path() {
 	let chanmon_cfgs = create_chanmon_cfgs(2);
 	let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
@@ -1364,6 +1386,7 @@ fn custom_tlvs_to_blinded_path() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn fails_receive_tlvs_authentication() {
 	let chanmon_cfgs = create_chanmon_cfgs(2);
 	let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
@@ -1453,6 +1476,7 @@ fn fails_receive_tlvs_authentication() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn blinded_payment_path_padding() {
 	// Make sure that for a blinded payment path, all encrypted payloads are padded to equal lengths.
 	let chanmon_cfgs = create_chanmon_cfgs(5);
@@ -1490,7 +1514,7 @@ fn blinded_payment_path_padding() {
 
 fn update_add_msg(
 	amount_msat: u64, cltv_expiry: u32, blinding_point: Option<PublicKey>,
-	onion_routing_packet: msgs::OnionPacket
+	onion_routing_packet: msgs::OnionPacket,
 ) -> msgs::UpdateAddHTLC {
 	msgs::UpdateAddHTLC {
 		channel_id: ChannelId::from_bytes([0; 32]),
@@ -1506,6 +1530,7 @@ fn update_add_msg(
 }
 
 #[test]
+#[rustfmt::skip]
 fn route_blinding_spec_test_vector() {
 	let mut secp_ctx = Secp256k1::new();
 	let bob_secret = secret_from_hex("4242424242424242424242424242424242424242424242424242424242424242");
@@ -1736,6 +1761,7 @@ fn route_blinding_spec_test_vector() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn test_combined_trampoline_onion_creation_vectors() {
 	// As per https://github.com/lightning/bolts/blob/fa0594ac2af3531d734f1d707a146d6e13679451/bolt04/trampoline-to-blinded-path-payment-onion-test.json#L251
 
@@ -1819,6 +1845,7 @@ fn test_combined_trampoline_onion_creation_vectors() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn test_trampoline_inbound_payment_decoding() {
 	let secp_ctx = Secp256k1::new();
 	let session_priv = secret_from_hex("0303030303030303030303030303030303030303030303030303030303030303");
@@ -1965,6 +1992,7 @@ fn test_trampoline_inbound_payment_decoding() {
 }
 
 #[test]
+#[rustfmt::skip]
 fn test_trampoline_forward_payload_encoded_as_receive() {
 	// Test that we'll fail backwards as expected when receiving a well-formed blinded forward
 	// trampoline onion payload with no next hop present.
@@ -2152,6 +2180,7 @@ fn test_trampoline_forward_payload_encoded_as_receive() {
 	}
 }
 
+#[rustfmt::skip]
 fn do_test_trampoline_single_hop_receive(success: bool) {
 	const TOTAL_NODE_COUNT: usize = 3;
 	let secp_ctx = Secp256k1::new();
@@ -2253,6 +2282,7 @@ fn test_trampoline_single_hop_receive() {
 	do_test_trampoline_single_hop_receive(false);
 }
 
+#[rustfmt::skip]
 fn do_test_trampoline_unblinded_receive(success: bool) {
 	// Simulate a payment of A (0) -> B (1) -> C(Trampoline) (2)
 
@@ -2403,11 +2433,12 @@ fn do_test_trampoline_unblinded_receive(success: bool) {
 
 #[test]
 fn test_trampoline_unblinded_receive() {
-    do_test_trampoline_unblinded_receive(true);
-    do_test_trampoline_unblinded_receive(false);
+	do_test_trampoline_unblinded_receive(true);
+	do_test_trampoline_unblinded_receive(false);
 }
 
 #[test]
+#[rustfmt::skip]
 fn test_trampoline_forward_rejection() {
 	const TOTAL_NODE_COUNT: usize = 3;