Use multiplier in dust exposure threshold calculation

[rust-lightning] / lightning / src / ln / onion_route_tests.rs

diff --git a/lightning/src/ln/onion_route_tests.rs b/lightning/src/ln/onion_route_tests.rs
index 191f45c4b0b66a6e5211579a66110daf952821b3..e5faedfe7fc39c958cc52f1c40fbcbc09bcebf27 100644 (file)
--- a/lightning/src/ln/onion_route_tests.rs
+++ b/lightning/src/ln/onion_route_tests.rs
@@ -671,6 +671,7 @@ fn do_test_onion_failure_stale_channel_update(announced_channel: bool) {
        config.channel_handshake_config.announced_channel = announced_channel;
        config.channel_handshake_limits.force_announced_channel_preference = false;
        config.accept_forwards_to_priv_channels = !announced_channel;
+       config.channel_config.max_dust_htlc_exposure = MaxDustHTLCExposure::FeeRateMultiplier(5_000_000 / 253);
        let chanmon_cfgs = create_chanmon_cfgs(3);
        let persister;
        let chain_monitor;
@@ -1371,11 +1372,19 @@ fn test_phantom_failure_too_low_recv_amt() {
 
 #[test]
 fn test_phantom_dust_exposure_failure() {
+       do_test_phantom_dust_exposure_failure(false);
+       do_test_phantom_dust_exposure_failure(true);
+}
+
+fn do_test_phantom_dust_exposure_failure(multiplier_dust_limit: bool) {
        // Set the max dust exposure to the dust limit.
        let max_dust_exposure = 546;
        let mut receiver_config = UserConfig::default();
+       // Default test fee estimator rate is 253, so to set the max dust exposure to the dust limit,
+       // we need to set the multiplier to 2.
        receiver_config.channel_config.max_dust_htlc_exposure =
-               MaxDustHTLCExposure::FixedLimitMsat(max_dust_exposure);
+               if multiplier_dust_limit { MaxDustHTLCExposure::FeeRateMultiplier(2) }
+               else { MaxDustHTLCExposure::FixedLimitMsat(max_dust_exposure) };
        receiver_config.channel_handshake_config.announced_channel = true;
 
        let chanmon_cfgs = create_chanmon_cfgs(2);