Update the processor's tests re: Batch SignId key

key used to be empty. As part of implementing support for multisig rotation
into the coordinator, it was easiest to set the key to the substrate key. While
the coordinator and full stack tests were updated, the processor tests weren't.
This does that.

tests/processor/src/tests/batch.rs

@@ -18,6 +18,7 @@ use crate::{*, tests::*};
 
 pub(crate) async fn recv_batch_preprocesses(
   coordinators: &mut [Coordinator],
+  substrate_key: &[u8; 32],
   attempt: u32,
 ) -> (SignId, HashMap<Participant, Vec<u8>>) {
   let mut id = None;
@@ -36,7 +37,7 @@ pub(crate) async fn recv_batch_preprocesses(
         },
       ) => {
         if id.is_none() {
-          assert!(this_id.key.is_empty());
+          assert_eq!(&this_id.key, substrate_key);
           assert_eq!(this_id.attempt, attempt);
           id = Some(this_id.clone());
           block = Some(this_block);
@@ -231,7 +232,8 @@ fn batch_test() {
         tokio::time::sleep(Duration::from_secs(10)).await;
 
         // Make sure the proceessors picked it up by checking they're trying to sign a batch for it
-        let (mut id, mut preprocesses) = recv_batch_preprocesses(&mut coordinators, 0).await;
+        let (mut id, mut preprocesses) =
+          recv_batch_preprocesses(&mut coordinators, &key_pair.0 .0, 0).await;
         // Trigger a random amount of re-attempts
         for attempt in 1 ..= u32::try_from(OsRng.next_u64() % 4).unwrap() {
           // TODO: Double check how the processor handles this ID field
@@ -244,7 +246,8 @@ fn batch_test() {
               })
               .await;
           }
-          (id, preprocesses) = recv_batch_preprocesses(&mut coordinators, attempt).await;
+          (id, preprocesses) =
+            recv_batch_preprocesses(&mut coordinators, &key_pair.0 .0, attempt).await;
         }
 
         // Continue with signing the batch

tests/processor/src/tests/send.rs

@@ -187,7 +187,7 @@ fn send_test() {
       tokio::time::sleep(Duration::from_secs(10)).await;
 
       // Make sure the proceessors picked it up by checking they're trying to sign a batch for it
-      let (id, preprocesses) = recv_batch_preprocesses(&mut coordinators, 0).await;
+      let (id, preprocesses) = recv_batch_preprocesses(&mut coordinators, &key_pair.0 .0, 0).await;
 
       // Continue with signing the batch
       let batch = sign_batch(&mut coordinators, key_pair.0 .0, id, preprocesses).await;