fix(peer): clear remaining clippy warnings

`just clippy` was failing on peer test and helper code after the current lint
set denied warnings. This keeps the cleanup local to the reported warnings and
avoids changing runtime peer behavior or the wire protocol surface.

The test helpers now avoid needless ownership, active-operation assertions take
slices, and the local monitor watch-event helper no longer wraps a value that
cannot fail. The install recovery matrix keeps the same cases, but moves the
case table and per-case assertions into helpers so the test body stays below the
clippy line limit. The remaining lint fixes replace similar temporary names and
use an explicit `expect` message for test-only length conversion.

No separate project documentation update is needed because this only changes
internal test/helper structure and lint-only assertions; the existing peer
architecture docs remain accurate.

Test Plan:
- just fmt
- just clippy
- just test
- git diff --check
- git diff --cached --check

Refs: none

crates/lanspread-peer/src/download/planning.rs

@@ -225,12 +225,16 @@ mod tests {
         assert_eq!(chunk_counts.get(&peers[0]), Some(&2));
         assert_eq!(chunk_counts.get(&peers[1]), Some(&2));
 
-        let peer_a_bytes = byte_counts.get(&peers[0]).copied().unwrap_or_default();
+        let assigned_bytes = [
-        let peer_b_bytes = byte_counts.get(&peers[1]).copied().unwrap_or_default();
+            byte_counts.get(&peers[0]).copied().unwrap_or_default(),
-        assert_eq!(peer_a_bytes + peer_b_bytes, file_size);
+            byte_counts.get(&peers[1]).copied().unwrap_or_default(),
+        ];
+        assert_eq!(assigned_bytes.iter().sum::<u64>(), file_size);
         assert!(
-            peer_a_bytes.abs_diff(peer_b_bytes) <= CHUNK_SIZE,
+            assigned_bytes[0].abs_diff(assigned_bytes[1]) <= CHUNK_SIZE,
-            "large file bytes should be balanced within one chunk: {peer_a_bytes} vs {peer_b_bytes}"
+            "large file bytes should be balanced within one chunk: {} vs {}",
+            assigned_bytes[0],
+            assigned_bytes[1]
         );
     }
 

crates/lanspread-peer/src/handlers.rs

@@ -1588,11 +1588,12 @@ mod tests {
     }
 
     fn test_ctx(game_dir: PathBuf) -> Ctx {
+        let state_dir = game_dir.join(".test-state");
         Ctx::new(
             Arc::new(RwLock::new(PeerGameDB::new())),
             "peer".to_string(),
-            game_dir.clone(),
+            game_dir,
-            game_dir.join(".test-state"),
+            state_dir,
             Arc::new(FakeUnpacker),
             CancellationToken::new(),
             TaskTracker::new(),
@@ -1688,15 +1689,15 @@ mod tests {
         game
     }
 
-    fn assert_active_update(event: PeerEvent, expected: Vec<ActiveOperation>) {
+    fn assert_active_update(event: PeerEvent, expected: &[ActiveOperation]) {
         let PeerEvent::ActiveOperationsChanged { active_operations } = event else {
             panic!("expected ActiveOperationsChanged");
         };
         assert_eq!(active_operations, expected);
     }
 
-    fn active_update(id: &str, operation: ActiveOperationKind) -> Vec<ActiveOperation> {
+    fn active_update(id: &str, operation: ActiveOperationKind) -> [ActiveOperation; 1] {
-        vec![ActiveOperation {
+        [ActiveOperation {
             id: id.to_string(),
             operation,
         }]
@@ -1934,7 +1935,7 @@ mod tests {
         );
         assert_active_update(
             recv_event(&mut rx).await,
-            vec![ActiveOperation {
+            &[ActiveOperation {
                 id: "game".to_string(),
                 operation: ActiveOperationKind::Updating,
             }],
@@ -1971,12 +1972,12 @@ mod tests {
         assert!(token.is_cancelled());
         assert_active_update(
             recv_event(&mut rx).await,
-            vec![ActiveOperation {
+            &[ActiveOperation {
                 id: "game".to_string(),
                 operation: ActiveOperationKind::Updating,
             }],
         );
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(
             !ctx.active_operations.read().await.contains_key("game"),
             "timed-out drain should not leave the operation stuck active"
@@ -2029,7 +2030,7 @@ mod tests {
 
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Updating),
+            &active_update("game", ActiveOperationKind::Updating),
         );
         assert!(matches!(
             recv_event(&mut rx).await,
@@ -2038,7 +2039,7 @@ mod tests {
                 operation: InstallOperation::Updating
             } if id == "game"
         ));
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::InstallGameFinished { id } if id == "game"
@@ -2060,7 +2061,7 @@ mod tests {
 
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Installing),
+            &active_update("game", ActiveOperationKind::Installing),
         );
         match recv_event(&mut rx).await {
             PeerEvent::InstallGameBegin { id, operation } => {
@@ -2070,7 +2071,7 @@ mod tests {
             _ => panic!("expected InstallGameBegin"),
         }
         assert_local_update(recv_event(&mut rx).await, true, true);
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::InstallGameFinished { id } if id == "game"
@@ -2121,7 +2122,7 @@ mod tests {
 
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Installing),
+            &active_update("game", ActiveOperationKind::Installing),
         );
         match recv_event(&mut rx).await {
             PeerEvent::InstallGameBegin { id, operation } => {
@@ -2131,7 +2132,7 @@ mod tests {
             _ => panic!("expected InstallGameBegin"),
         }
         assert_local_update(recv_event(&mut rx).await, true, true);
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::InstallGameFinished { id } if id == "game"
@@ -2181,7 +2182,7 @@ mod tests {
 
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Updating),
+            &active_update("game", ActiveOperationKind::Updating),
         );
         match recv_event(&mut rx).await {
             PeerEvent::InstallGameBegin { id, operation } => {
@@ -2191,7 +2192,7 @@ mod tests {
             _ => panic!("expected InstallGameBegin"),
         }
         assert_local_update(recv_event(&mut rx).await, true, true);
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::InstallGameFinished { id } if id == "game"
@@ -2212,7 +2213,7 @@ mod tests {
         run_install_operation(&ctx, &tx, "game".to_string()).await;
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Installing),
+            &active_update("game", ActiveOperationKind::Installing),
         );
         assert!(matches!(
             recv_event(&mut rx).await,
@@ -2223,7 +2224,7 @@ mod tests {
         ));
         let game = local_update_game(recv_event(&mut rx).await, true, true);
         assert_eq!(game.local_version.as_deref(), Some("20240101"));
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::InstallGameFinished { id } if id == "game"
@@ -2235,7 +2236,7 @@ mod tests {
         run_install_operation(&ctx, &tx, "game".to_string()).await;
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Updating),
+            &active_update("game", ActiveOperationKind::Updating),
         );
         assert!(matches!(
             recv_event(&mut rx).await,
@@ -2246,7 +2247,7 @@ mod tests {
         ));
         let game = local_update_game(recv_event(&mut rx).await, true, true);
         assert_eq!(game.local_version.as_deref(), Some("20250101"));
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::InstallGameFinished { id } if id == "game"
@@ -2255,7 +2256,7 @@ mod tests {
         run_uninstall_operation(&ctx, &tx, "game".to_string()).await;
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Uninstalling),
+            &active_update("game", ActiveOperationKind::Uninstalling),
         );
         assert!(matches!(
             recv_event(&mut rx).await,
@@ -2263,7 +2264,7 @@ mod tests {
         ));
         let game = local_update_game(recv_event(&mut rx).await, false, true);
         assert_eq!(game.local_version.as_deref(), Some("20250101"));
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::UninstallGameFinished { id } if id == "game"
@@ -2286,14 +2287,14 @@ mod tests {
 
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::Uninstalling),
+            &active_update("game", ActiveOperationKind::Uninstalling),
         );
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::UninstallGameBegin { id } if id == "game"
         ));
         assert_local_update(recv_event(&mut rx).await, false, true);
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::UninstallGameFinished { id } if id == "game"
@@ -2321,7 +2322,7 @@ mod tests {
 
         assert_active_update(
             recv_event(&mut rx).await,
-            active_update("game", ActiveOperationKind::RemovingDownload),
+            &active_update("game", ActiveOperationKind::RemovingDownload),
         );
         assert!(matches!(
             recv_event(&mut rx).await,
@@ -2331,7 +2332,7 @@ mod tests {
             panic!("expected LocalLibraryChanged");
         };
         assert!(games.is_empty());
-        assert_active_update(recv_event(&mut rx).await, Vec::new());
+        assert_active_update(recv_event(&mut rx).await, &[]);
         assert!(matches!(
             recv_event(&mut rx).await,
             PeerEvent::RemoveDownloadedGameFinished { id } if id == "game"

crates/lanspread-peer/src/install/transaction.rs

@@ -1044,53 +1044,8 @@ mod tests {
     const INSTALLING_PAYLOAD: &[u8] = b"installing";
     const BACKUP_PAYLOAD: &[u8] = b"backup";
 
-    fn seed_recovery_case(root: &Path, case: &RecoveryCase) {
+    fn recovery_cases() -> [RecoveryCase; 10] {
-        write_file(&root.join("version.ini"), b"20250101");
+        [
-        if case.has_local {
-            write_file(&root.join(LOCAL_DIR).join("payload.txt"), LOCAL_PAYLOAD);
-        }
-        if case.has_installing {
-            write_file(
-                &root.join(INSTALLING_DIR).join("payload.txt"),
-                INSTALLING_PAYLOAD,
-            );
-        }
-        if case.has_backup {
-            write_file(&root.join(BACKUP_DIR).join("payload.txt"), BACKUP_PAYLOAD);
-        }
-    }
-
-    fn assert_recovered_case(root: &Path, case: &RecoveryCase) {
-        let local_payload = root.join(LOCAL_DIR).join("payload.txt");
-        match case.expected_local_payload {
-            Some(expected) => assert_eq!(
-                std::fs::read(&local_payload)
-                    .unwrap_or_else(|err| panic!("{} local payload: {err}", case.name)),
-                expected,
-                "{} local payload",
-                case.name
-            ),
-            None => assert!(
-                !root.join(LOCAL_DIR).exists(),
-                "{} local dir should be absent",
-                case.name
-            ),
-        }
-        assert!(
-            !root.join(INSTALLING_DIR).exists(),
-            "{} installing dir should be absent",
-            case.name
-        );
-        assert!(
-            !root.join(BACKUP_DIR).exists(),
-            "{} backup dir should be absent",
-            case.name
-        );
-    }
-
-    #[tokio::test]
-    async fn recovery_covers_install_matrix_rows() {
-        let cases = [
             RecoveryCase {
                 name: "installing_commit_landed",
                 intent_state: InstallIntentState::Installing,
@@ -1171,27 +1126,71 @@ mod tests {
                 has_backup: false,
                 expected_local_payload: None,
             },
-        ];
+        ]
+    }
 
-        let state = test_state();
+    fn seed_recovery_case(root: &Path, case: &RecoveryCase) {
-        for case in cases {
+        write_file(&root.join("version.ini"), b"20250101");
+        if case.has_local {
+            write_file(&root.join(LOCAL_DIR).join("payload.txt"), LOCAL_PAYLOAD);
+        }
+        if case.has_installing {
+            write_file(
+                &root.join(INSTALLING_DIR).join("payload.txt"),
+                INSTALLING_PAYLOAD,
+            );
+        }
+        if case.has_backup {
+            write_file(&root.join(BACKUP_DIR).join("payload.txt"), BACKUP_PAYLOAD);
+        }
+    }
+
+    fn assert_recovered_case(root: &Path, case: &RecoveryCase) {
+        let local_payload = root.join(LOCAL_DIR).join("payload.txt");
+        match case.expected_local_payload {
+            Some(expected) => assert_eq!(
+                std::fs::read(&local_payload)
+                    .unwrap_or_else(|err| panic!("{} local payload: {err}", case.name)),
+                expected,
+                "{} local payload",
+                case.name
+            ),
+            None => assert!(
+                !root.join(LOCAL_DIR).exists(),
+                "{} local dir should be absent",
+                case.name
+            ),
+        }
+        assert!(
+            !root.join(INSTALLING_DIR).exists(),
+            "{} installing dir should be absent",
+            case.name
+        );
+        assert!(
+            !root.join(BACKUP_DIR).exists(),
+            "{} backup dir should be absent",
+            case.name
+        );
+    }
+
+    async fn assert_recovery_case(state_dir: &Path, case: RecoveryCase) {
         let temp = TempDir::new("lanspread-install");
         let root = temp.game_root();
         seed_recovery_case(&root, &case);
         write_intent(
-                state.path(),
+            state_dir,
             "game",
             &InstallIntent::new("game", case.intent_state.clone(), Some("20250101".into())),
         )
         .await
         .unwrap_or_else(|err| panic!("{} intent should be written: {err}", case.name));
 
-            recover_game_root(&root, state.path(), "game")
+        recover_game_root(&root, state_dir, "game")
             .await
             .unwrap_or_else(|err| panic!("{} recovery should succeed: {err}", case.name));
 
         assert_recovered_case(&root, &case);
-            let intent = read_intent(state.path(), "game").await;
+        let intent = read_intent(state_dir, "game").await;
         assert_eq!(intent.state, InstallIntentState::None, "{}", case.name);
         assert_eq!(
             intent.eti_version.as_deref(),
@@ -1200,6 +1199,13 @@ mod tests {
             case.name
         );
     }
+
+    #[tokio::test]
+    async fn recovery_covers_install_matrix_rows() {
+        let state = test_state();
+        for case in recovery_cases() {
+            assert_recovery_case(state.path(), case).await;
+        }
     }
 
     #[tokio::test]

crates/lanspread-peer/src/services/local_monitor.rs

@@ -374,11 +374,12 @@ mod tests {
     }
 
     fn test_ctx(game_dir: PathBuf, catalog: GameCatalog) -> Ctx {
+        let state_dir = game_dir.join(".test-state");
         Ctx::new(
             Arc::new(RwLock::new(PeerGameDB::new())),
             "peer".to_string(),
-            game_dir.clone(),
+            game_dir,
-            game_dir.join(".test-state"),
+            state_dir,
             Arc::new(NoopUnpacker),
             CancellationToken::new(),
             TaskTracker::new(),
@@ -388,8 +389,8 @@ mod tests {
         )
     }
 
-    fn watch_event(path: PathBuf) -> notify::Result<Event> {
+    fn watch_event(path: PathBuf) -> Event {
-        Ok(Event::new(EventKind::Any).add_path(path))
+        Event::new(EventKind::Any).add_path(path)
     }
 
     async fn recv_local_update(
@@ -460,7 +461,7 @@ mod tests {
             &ctx,
             &tx,
             &gate,
-            watch_event(temp.path().join("game").join("version.ini")),
+            Ok(watch_event(temp.path().join("game").join("version.ini"))),
         )
         .await;
         ctx.task_tracker.close();

crates/lanspread-peer/src/services/stream.rs

@@ -479,11 +479,12 @@ mod tests {
 
     fn test_ctx(game_dir: PathBuf, catalog: GameCatalog) -> PeerCtx {
         let (tx_notify_ui, _rx) = mpsc::unbounded_channel();
+        let state_dir = game_dir.join(".test-state");
         Ctx::new(
             Arc::new(RwLock::new(PeerGameDB::new())),
             "peer".to_string(),
-            game_dir.clone(),
+            game_dir,
-            game_dir.join(".test-state"),
+            state_dir,
             Arc::new(NoopUnpacker),
             CancellationToken::new(),
             TaskTracker::new(),

crates/lanspread-peer/src/stream_install.rs

@@ -918,15 +918,11 @@ Details: RAR 5
     #[test]
     fn sender_archive_integrity_accepts_matching_size_and_crc32() {
         let bytes = b"payload";
-        let integrity =
+        let byte_len = u64::try_from(bytes.len()).expect("test payload length should fit in u64");
-            SenderArchiveIntegrity::new(u64::try_from(bytes.len()).unwrap(), crc32_of(bytes));
+        let integrity = SenderArchiveIntegrity::new(byte_len, crc32_of(bytes));
 
         integrity
-            .verify(
+            .verify("bin/payload.bin", byte_len, crc32_of(bytes))
-                "bin/payload.bin",
-                u64::try_from(bytes.len()).unwrap(),
-                crc32_of(bytes),
-            )
             .expect("matching sender archive metadata should verify");
     }