f calculate value in test

Author: valentinewallace

lightning/src/ln/blinded_payment_tests.rs

@@ -1085,7 +1085,13 @@ fn min_htlc() {
 	let chan_1_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1_000_000, 0);
 	let chan_2_3 = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 1_000_000, 0);
 
-	let min_htlc_msat = 4174; // the resulting htlc min
+	let min_htlc_msat = {
+		// The min htlc for this setup is nodes[2]'s htlc_minimum_msat minus the
+		// following fees.
+		let post_base_fee = chan_2_3.1.contents.htlc_minimum_msat - chan_2_3.0.contents.fee_base_msat as u64;
+		let prop_fee = chan_2_3.0.contents.fee_proportional_millionths as u64;
+		(post_base_fee * 1_000_000 + 1_000_000 + prop_fee - 1) / (prop_fee + 1_000_000)
+	};
 	let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash(&nodes[3], Some(min_htlc_msat), None);
 	let mut route_params = get_blinded_route_parameters(
 		min_htlc_msat, payment_secret, chan_1_2.1.contents.htlc_minimum_msat,