radicle: add Config::seed constructor

Add a `Config` constructor for testing seed nodes that uses
`usize::MAX` for capacity.

This allows test scenarios to not drop messages due to rate limiting
-- all nodes are on the same IP address and rate limiting is performed
per IP address.

Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
X-Clacks-Overhead: GNU Terry Pratchett

radicle/src/node/config.rs

@@ -227,6 +227,32 @@ impl Config {
         }
     }
 
+    /// Configuration for a test seed node.
+    ///
+    /// It sets the `RateLimit::capacity` to `usize::MAX` ensuring
+    /// that there are no rate limits for test nodes, since they all
+    /// operate on the same IP address. This prevents any announcement
+    /// messages from being dropped.
+    pub fn seed(alias: Alias) -> Self {
+        Self {
+            network: Network::Test,
+            limits: Limits {
+                rate: RateLimits {
+                    inbound: RateLimit {
+                        fill_rate: 1.0,
+                        capacity: usize::MAX,
+                    },
+                    outbound: RateLimit {
+                        fill_rate: 1.0,
+                        capacity: usize::MAX,
+                    },
+                },
+                ..Limits::default()
+            },
+            ..Self::new(alias)
+        }
+    }
+
     pub fn new(alias: Alias) -> Self {
         Self {
             alias,