- &our_id, &payment_params, &network_graph.read_only(), None, 300_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) {
- assert_eq!(err, "Failed to find a sufficient route to the given destination");
+ &our_id, &payment_params, &network_graph.read_only(), None, 300_000, 42,
+ Arc::clone(&logger), &scorer, &random_seed_bytes) {
+ assert_eq!(err, "Failed to find a sufficient route to the given destination");
+ } else { panic!(); }
+ }
+
+ {
+ // Attempt to route while setting max_mpp_path_count to 0 results in a failure.
+ let zero_payment_params = payment_params.clone().with_max_mpp_path_count(0);
+ if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(
+ &our_id, &zero_payment_params, &network_graph.read_only(), None, 100, 42,
+ Arc::clone(&logger), &scorer, &random_seed_bytes) {
+ assert_eq!(err, "Can't find an MPP route with no paths allowed.");
+ } else { panic!(); }
+ }
+
+ {
+ // Attempt to route while setting max_mpp_path_count to 3 results in a failure.
+ // This is the case because the minimal_value_contribution_msat would require each path
+ // to account for 1/3 of the total value, which is violated by 2 out of 3 paths.
+ let fail_payment_params = payment_params.clone().with_max_mpp_path_count(3);
+ if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(
+ &our_id, &fail_payment_params, &network_graph.read_only(), None, 250_000, 42,
+ Arc::clone(&logger), &scorer, &random_seed_bytes) {
+ assert_eq!(err, "Failed to find a sufficient route to the given destination");