Move `FixedRate` into event_loop module

This is where these types are used, they can be defined in there.

swap/src/asb.rs

@@ -1,7 +1,5 @@
 pub mod command;
 pub mod config;
-mod fixed_rate;
 mod rate;
 
-pub use self::fixed_rate::FixedRate;
-pub use self::rate::Rate;
+pub use rate::Rate;

swap/src/asb/fixed_rate.rs

@@ -1,20 +0,0 @@
-use crate::asb::Rate;
-
-#[derive(Clone, Copy, Debug)]
-pub struct FixedRate(Rate);
-
-impl FixedRate {
-    pub const RATE: f64 = 0.01;
-
-    pub fn value(&self) -> Rate {
-        self.0
-    }
-}
-
-impl Default for FixedRate {
-    fn default() -> Self {
-        let ask = bitcoin::Amount::from_btc(Self::RATE).expect("Static value should never fail");
-
-        Self(Rate::new(ask))
-    }
-}

swap/src/protocol/alice/event_loop.rs

@@ -1,4 +1,4 @@
-use crate::asb::{FixedRate, Rate};
+use crate::asb::Rate;
 use crate::database::Database;
 use crate::env::Config;
 use crate::monero::BalanceTooLow;
@@ -346,6 +346,25 @@ pub trait LatestRate {
     fn latest_rate(&mut self) -> Result<Rate, Self::Error>;
 }
 
+#[derive(Clone, Debug)]
+pub struct FixedRate(Rate);
+
+impl FixedRate {
+    pub const RATE: f64 = 0.01;
+
+    pub fn value(&self) -> Rate {
+        self.0
+    }
+}
+
+impl Default for FixedRate {
+    fn default() -> Self {
+        let ask = bitcoin::Amount::from_btc(Self::RATE).expect("Static value should never fail");
+
+        Self(Rate::new(ask))
+    }
+}
+
 impl LatestRate for FixedRate {
     type Error = Infallible;
 
@@ -359,9 +378,8 @@ impl LatestRate for kraken::PriceUpdates {
 
     fn latest_rate(&mut self) -> Result<Rate, Self::Error> {
         let update = self.latest_update()?;
-        let rate = Rate::new(update.ask);
 
-        Ok(rate)
+        Ok(Rate::new(update.ask))
     }
 }
 

swap/tests/harness/mod.rs

@@ -15,11 +15,11 @@ use std::fmt;
 use std::path::{Path, PathBuf};
 use std::sync::Arc;
 use std::time::Duration;
-use swap::asb::FixedRate;
 use swap::bitcoin::{CancelTimelock, PunishTimelock};
 use swap::database::Database;
 use swap::env::{Config, GetConfig};
 use swap::network::swarm;
+use swap::protocol::alice::event_loop::FixedRate;
 use swap::protocol::alice::{AliceState, Swap};
 use swap::protocol::bob::BobState;
 use swap::protocol::{alice, bob};