Don't use [0; 32] for the embedded keys in the coordinator rotation test

The key_gen function expects the random values already decided.

tests/coordinator/src/lib.rs

@@ -174,6 +174,9 @@ impl Processor {
 
     use serai_client::primitives::insecure_arbitrary_key_from_name;
     let substrate_key = Arc::new(AsyncMutex::new(None));
+    let embedwards25519_evrf_key = (Embedwards25519::generator() *
+      insecure_arbitrary_key_from_name::<Embedwards25519>(name))
+    .to_bytes();
     let mut res = Processor {
       network,
 
@@ -189,8 +192,7 @@ impl Processor {
       abort_handle: None,
 
       evrf_public_keys: (
-        (Embedwards25519::generator() * insecure_arbitrary_key_from_name::<Embedwards25519>(name))
-          .to_bytes(),
+        embedwards25519_evrf_key,
         match network {
           NetworkId::Serai => panic!("mock processor for the serai network"),
           NetworkId::Bitcoin | NetworkId::Ethereum => {
@@ -200,13 +202,7 @@ impl Processor {
             let key: &[u8] = key.as_ref();
             key.to_vec()
           }
-          NetworkId::Monero => {
-            let key = (Embedwards25519::generator() *
-              insecure_arbitrary_key_from_name::<Embedwards25519>(name))
-            .to_bytes();
-            let key: &[u8] = key.as_ref();
-            key.to_vec()
-          }
+          NetworkId::Monero => embedwards25519_evrf_key.to_vec(),
         },
       ),
 
@@ -355,6 +351,10 @@ impl Processor {
     res
   }
 
+  pub fn network(&self) -> NetworkId {
+    self.network
+  }
+
   pub fn evrf_public_keys(&self) -> ([u8; 32], Vec<u8>) {
     self.evrf_public_keys.clone()
   }

tests/coordinator/src/tests/rotation.rs

@@ -153,7 +153,7 @@ async fn set_rotation_test() {
 
       // excluded participant
       let pair5 = insecure_pair_from_name("Eve");
-      let network = NetworkId::Bitcoin;
+      let network = excluded.network();
       let amount = Amount(1_000_000 * 10_u64.pow(8));
       let serai = processors[0].serai().await;
 
@@ -162,15 +162,15 @@ async fn set_rotation_test() {
       set_embedded_elliptic_curve_key(
         &serai,
         EmbeddedEllipticCurve::Embedwards25519,
-        vec![0; 32],
+        excluded.evrf_public_keys().0.to_vec(),
         &pair5,
         0,
       )
       .await;
       set_embedded_elliptic_curve_key(
         &serai,
-        EmbeddedEllipticCurve::Secq256k1,
-        vec![0; 33],
+        *excluded.network().embedded_elliptic_curves().last().unwrap(),
+        excluded.evrf_public_keys().1.clone(),
         &pair5,
         1,
       )