test: satisfy clippy assert_is_empty

Stable 1.99 added the lint and CI denies warnings, which failed the
build and skipped the deploy. Each flagged assert now uses the
assert_eq! form clippy suggests.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

crates/arr-api/src/owners.rs

@@ -319,7 +319,7 @@ mod tests {
                 .json()
                 .await
                 .expect("alice json");
-        assert!(alice_view.is_empty());
+        assert_eq!(alice_view, [] as [serde_json::Value; 0]);
 
         let bob_view: Vec<serde_json::Value> =
             reqwest::get(format!("{base}/api/movies?owner_id={bob_id}"))

crates/arr-api/src/roots.rs

@@ -946,7 +946,7 @@ mod tests {
         assert_eq!(response.status(), StatusCode::OK);
         assert_eq!(stored_path(&base, 1).await, new.to_str().expect("utf-8"));
         assert!(!new.exists(), "nothing was created on disk");
-        assert!(file_paths(&state).await.is_empty());
+        assert_eq!(file_paths(&state).await, [] as [std::string::String; 0]);
     }
 
     /// Issue #236: a destination already holding a folder of that name is a

crates/arr-api/src/search.rs

@@ -1224,7 +1224,10 @@ mod tests {
         let body: serde_json::Value = response.json().await.expect("json");
         assert_eq!(body["library"][0]["kind"], "movie");
         assert_eq!(body["library"][0]["title"], "Dune");
-        assert!(body["tmdb"].as_array().expect("tmdb").is_empty());
+        assert_eq!(
+            body["tmdb"].as_array().expect("tmdb").as_slice(),
+            [] as [serde_json::Value; 0]
+        );
         assert_eq!(body["tmdb_status"], "unavailable");
         drop(dir);
     }

crates/arr-api/src/series.rs

@@ -3517,7 +3517,7 @@ mod tests {
                 .json()
                 .await
                 .expect("json");
-        assert!(empty.is_empty());
+        assert_eq!(empty, [] as [serde_json::Value; 0]);
 
         let tagged = reqwest::Client::new()
             .put(format!("{base}/api/series/{series_id}/owners/{owner_id}"))
@@ -3557,7 +3557,7 @@ mod tests {
                 .json()
                 .await
                 .expect("json");
-        assert!(owners.is_empty());
+        assert_eq!(owners, [] as [serde_json::Value; 0]);
     }
 
     #[tokio::test]

crates/arr-api/src/subtitles.rs

@@ -2225,10 +2225,13 @@ mod tests {
         // No grab record backs this file, so nothing can claim its release
         // name — the chip reads "no", never "unknown".
         assert_eq!(candidates[0]["release_match"], false);
-        assert!(body["provider_errors"]
-            .as_array()
-            .expect("errors")
-            .is_empty());
+        assert_eq!(
+            body["provider_errors"]
+                .as_array()
+                .expect("errors")
+                .as_slice(),
+            [] as [serde_json::Value; 0]
+        );
     }
 
     /// One provider failing is not the search failing: §15 configures two.
@@ -2574,7 +2577,10 @@ mod tests {
         let (status, body) = grab(&fixture, pt()).await;
 
         assert_eq!(status, StatusCode::SERVICE_UNAVAILABLE, "{body}");
-        assert!(fixture.subtitle_rows().await.is_empty());
+        assert_eq!(
+            fixture.subtitle_rows().await,
+            [] as [arr_db::SubtitleFile; 0]
+        );
         assert!(!fixture
             .folder
             .join("Dune (2021) [tmdbid-438631] - [2160p][WEB-DL].pt-PT.srt")
@@ -2600,7 +2606,10 @@ mod tests {
 
         assert_eq!(status, StatusCode::NOT_FOUND, "{body}");
         assert_eq!(body["code"], "candidate_expired");
-        assert!(fixture.subtitle_rows().await.is_empty());
+        assert_eq!(
+            fixture.subtitle_rows().await,
+            [] as [arr_db::SubtitleFile; 0]
+        );
     }
 
     #[tokio::test]
@@ -2822,7 +2831,10 @@ mod tests {
             .expect("delete");
         assert_eq!(response.status(), StatusCode::NO_CONTENT);
         assert!(!path.exists(), "the sidecar is gone from disk");
-        assert!(fixture.subtitle_rows().await.is_empty());
+        assert_eq!(
+            fixture.subtitle_rows().await,
+            [] as [arr_db::SubtitleFile; 0]
+        );
         assert_eq!(
             fixture.attempt_state("pt-PT").await.as_deref(),
             Some("wanted")
@@ -2923,10 +2935,13 @@ mod tests {
         let statuses = status(&format!("{}/api/movies/1/subtitles/status", fixture.base)).await;
         assert_eq!(statuses.len(), 1);
         assert_eq!(statuses[0]["media_file_id"], 1);
-        assert!(statuses[0]["subtitles"]
-            .as_array()
-            .expect("subtitles")
-            .is_empty());
+        assert_eq!(
+            statuses[0]["subtitles"]
+                .as_array()
+                .expect("subtitles")
+                .as_slice(),
+            [] as [serde_json::Value; 0]
+        );
         let missing = statuses[0]["missing"].as_array().expect("missing");
         assert_eq!(missing.len(), 2, "{missing:?}");
         assert_eq!(missing[0]["language"], "pt-PT");
@@ -3108,10 +3123,13 @@ mod tests {
         fixture.probe(serde_json::json!(["en", "pt-PT"])).await;
 
         let statuses = status(&format!("{}/api/movies/1/subtitles/status", fixture.base)).await;
-        assert!(statuses[0]["embedded_tracks"]
-            .as_array()
-            .expect("embedded_tracks")
-            .is_empty());
+        assert_eq!(
+            statuses[0]["embedded_tracks"]
+                .as_array()
+                .expect("embedded_tracks")
+                .as_slice(),
+            [] as [serde_json::Value; 0]
+        );
     }
 
     /// The issue's whole point: nothing is missing on this file, so the
@@ -3223,7 +3241,10 @@ mod tests {
 
         let (status, body) = extract(&fixture, 0).await;
         assert_eq!(status, StatusCode::UNPROCESSABLE_ENTITY, "{body}");
-        assert!(fixture.subtitle_rows().await.is_empty());
+        assert_eq!(
+            fixture.subtitle_rows().await,
+            [] as [arr_db::SubtitleFile; 0]
+        );
     }
 
     #[tokio::test]
@@ -3268,8 +3289,14 @@ mod tests {
     async fn subtitle_queue_omits_titles_with_no_gaps() {
         let fixture = stub_application().await;
         let body = queue(&fixture.base).await;
-        assert!(body["movies"].as_array().expect("movies").is_empty());
-        assert!(body["series"].as_array().expect("series").is_empty());
+        assert_eq!(
+            body["movies"].as_array().expect("movies").as_slice(),
+            [] as [serde_json::Value; 0]
+        );
+        assert_eq!(
+            body["series"].as_array().expect("series").as_slice(),
+            [] as [serde_json::Value; 0]
+        );
     }
 
     /// #202: an attempt row for a language no longer in the wanted set is
@@ -3292,7 +3319,10 @@ mod tests {
             .expect("narrow wanted set");
 
         let body = queue(&fixture.base).await;
-        assert!(body["movies"].as_array().expect("movies").is_empty());
+        assert_eq!(
+            body["movies"].as_array().expect("movies").as_slice(),
+            [] as [serde_json::Value; 0]
+        );
     }
 
     /// #202: a movie's failed attempt surfaces with its language and detail.
@@ -3418,10 +3448,13 @@ mod tests {
         let body = queue(&fixture.base).await;
         let series = body["series"].as_array().expect("series");
         assert_eq!(series.len(), 1, "{series:?}");
-        assert!(series[0]["episodes"]
-            .as_array()
-            .expect("episodes")
-            .is_empty());
+        assert_eq!(
+            series[0]["episodes"]
+                .as_array()
+                .expect("episodes")
+                .as_slice(),
+            [] as [serde_json::Value; 0]
+        );
         let seasons = series[0]["seasons"].as_array().expect("seasons");
         assert_eq!(seasons.len(), 1, "{seasons:?}");
         assert_eq!(seasons[0]["season_number"], 1);
@@ -3475,7 +3508,10 @@ mod tests {
         let body = queue(&fixture.base).await;
         let series = body["series"].as_array().expect("series");
         assert_eq!(series.len(), 1, "{series:?}");
-        assert!(series[0]["seasons"].as_array().expect("seasons").is_empty());
+        assert_eq!(
+            series[0]["seasons"].as_array().expect("seasons").as_slice(),
+            [] as [serde_json::Value; 0]
+        );
         let episodes = series[0]["episodes"].as_array().expect("episodes");
         assert_eq!(episodes.len(), 2, "{episodes:?}");
     }

crates/arr-daemon/src/grab.rs

@@ -1904,7 +1904,7 @@ mod tests {
         action.tick(&database).await.unwrap();
         let outcomes = action.tick(&database).await.unwrap();
 
-        assert!(outcomes.is_empty());
+        assert_eq!(outcomes, [] as [crate::reconcile::Outcome; 0]);
         assert_eq!(fake.torrents().len(), 1);
         assert_eq!(grabs(&database).await.len(), 1);
     }
@@ -2163,7 +2163,7 @@ mod tests {
 
         let outcomes = action(&indexer, &downloader).tick(&database).await.unwrap();
 
-        assert!(outcomes.is_empty());
+        assert_eq!(outcomes, [] as [crate::reconcile::Outcome; 0]);
         assert!(fake.torrents().is_empty());
     }
 
@@ -2244,7 +2244,10 @@ mod tests {
 
         action(&indexer, &downloader).tick(&database).await.unwrap();
 
-        assert!(grabs(&database).await.is_empty());
+        assert_eq!(
+            grabs(&database).await,
+            [] as [(i64, std::string::String, std::string::String); 0]
+        );
         assert!(
             fake.torrents().is_empty(),
             "a torrent added this tick and then found blacklisted is removed"
@@ -2311,7 +2314,10 @@ mod tests {
         assert_eq!(targeted_searches(&indexer).await, 1);
         assert_eq!(deck(&database).await.len(), 3, "every candidate is cached");
         assert!(fake.torrents().is_empty());
-        assert!(grabs(&database).await.is_empty());
+        assert_eq!(
+            grabs(&database).await,
+            [] as [(i64, std::string::String, std::string::String); 0]
+        );
     }
 
     /// The digital-release gate belongs to targeted search (§6.2). A movie
@@ -2385,7 +2391,10 @@ mod tests {
 
         assert!(outcome.is_none());
         assert_eq!(targeted_searches(&indexer).await, 0);
-        assert!(deck(&database).await.is_empty());
+        assert_eq!(
+            deck(&database).await,
+            [] as [(std::string::String, std::string::String); 0]
+        );
         assert!(fake.torrents().is_empty());
     }
 
@@ -2402,9 +2411,12 @@ mod tests {
 
         let outcomes = action(&indexer, &downloader).tick(&database).await.unwrap();
 
-        assert!(outcomes.is_empty());
+        assert_eq!(outcomes, [] as [crate::reconcile::Outcome; 0]);
         assert!(fake.torrents().is_empty());
-        assert!(grabs(&database).await.is_empty());
+        assert_eq!(
+            grabs(&database).await,
+            [] as [(i64, std::string::String, std::string::String); 0]
+        );
     }
 
     #[tokio::test]

crates/arr-daemon/src/import.rs

@@ -1835,7 +1835,7 @@ mod tests {
 
         let outcomes = h.action.tick(&h.database).await.unwrap();
 
-        assert!(outcomes.is_empty());
+        assert_eq!(outcomes, [] as [crate::reconcile::Outcome; 0]);
     }
 
     /// #108, overriding §86: a `downloaded` grab whose torrent qBittorrent

crates/arr-daemon/src/reaper.rs

@@ -171,7 +171,10 @@ mod tests {
         let action = ReaperAction::new(QbitClient::new(&server.uri()).unwrap());
 
         let labels = HashSet::from(["movies-main".to_owned()]);
-        assert!(action.tick(&labels).await.unwrap().is_empty());
+        assert_eq!(
+            action.tick(&labels).await.unwrap(),
+            [] as [crate::reconcile::Outcome; 0]
+        );
         assert!(deleted.lock().unwrap().is_empty());
     }
 }

crates/arr-daemon/src/rss.rs

@@ -983,9 +983,12 @@ mod tests {
 
         let outcomes = action(&indexer, &downloader).tick(&database).await.unwrap();
 
-        assert!(outcomes.is_empty());
+        assert_eq!(outcomes, [] as [crate::reconcile::Outcome; 0]);
         assert!(fake.added.lock().unwrap().is_empty());
-        assert!(stored_releases(&database).await.is_empty());
+        assert_eq!(
+            stored_releases(&database).await,
+            [] as [std::string::String; 0]
+        );
     }
 
     /// §6.2: RSS never backs off, so nothing it does may spend one of

crates/arr-daemon/src/series_refresh.rs

@@ -998,7 +998,7 @@ mod tests {
         let after_first = server.received_requests().await.unwrap().len();
 
         let second = action(&server).tick(&database).await.unwrap();
-        assert!(second.is_empty());
+        assert_eq!(second, [] as [crate::reconcile::Outcome; 0]);
         assert_eq!(
             server.received_requests().await.unwrap().len(),
             after_first,

crates/arr-db/src/subtitles.rs

@@ -1053,7 +1053,10 @@ mod tests {
         assert_eq!(row.sync, SubtitleSync::Rejected);
 
         delete_file(db.pool(), id).await.unwrap();
-        assert!(files_for(db.pool(), file).await.unwrap().is_empty());
+        assert_eq!(
+            files_for(db.pool(), file).await.unwrap(),
+            [] as [crate::subtitles::SubtitleFile; 0]
+        );
     }
 
     #[tokio::test]
@@ -1244,8 +1247,14 @@ mod tests {
             .await
             .unwrap();
 
-        assert!(files_for(db.pool(), file).await.unwrap().is_empty());
-        assert!(attempts_for(db.pool(), file).await.unwrap().is_empty());
+        assert_eq!(
+            files_for(db.pool(), file).await.unwrap(),
+            [] as [crate::subtitles::SubtitleFile; 0]
+        );
+        assert_eq!(
+            attempts_for(db.pool(), file).await.unwrap(),
+            [] as [crate::subtitles::SubtitleAttempt; 0]
+        );
     }
 }
 
@@ -1273,7 +1282,10 @@ mod unsatisfy_tests {
     async fn a_deleted_subtitle_puts_its_language_back_in_the_work_list() {
         let (db, _dir, file) = file().await;
         mark_satisfied(db.pool(), file, "pt-PT").await.unwrap();
-        assert!(pending(db.pool(), 10).await.unwrap().is_empty());
+        assert_eq!(
+            pending(db.pool(), 10).await.unwrap(),
+            [] as [crate::subtitles::PendingSubtitle; 0]
+        );
 
         unsatisfy(db.pool(), file, "pt-PT").await.unwrap();
 
@@ -1306,7 +1318,10 @@ mod unsatisfy_tests {
     async fn an_untracked_language_is_left_alone() {
         let (db, _dir, file) = file().await;
         unsatisfy(db.pool(), file, "es").await.unwrap();
-        assert!(attempts_for(db.pool(), file).await.unwrap().is_empty());
+        assert_eq!(
+            attempts_for(db.pool(), file).await.unwrap(),
+            [] as [crate::subtitles::SubtitleAttempt; 0]
+        );
     }
 
     /// Only a satisfied claim is withdrawn: a language the loop has already

crates/arr-dl/src/lib.rs

@@ -724,8 +724,14 @@ mod tests {
 
         let client =
             QbitClient::with_credentials(&server.uri(), "user".into(), "pass".into()).unwrap();
-        assert!(client.list_torrents().await.unwrap().is_empty());
-        assert!(client.list_torrents().await.unwrap().is_empty());
+        assert_eq!(
+            client.list_torrents().await.unwrap(),
+            [] as [crate::Torrent; 0]
+        );
+        assert_eq!(
+            client.list_torrents().await.unwrap(),
+            [] as [crate::Torrent; 0]
+        );
     }
 
     /// An instance that bypasses authentication for arr's address answers
@@ -748,7 +754,10 @@ mod tests {
 
         let client =
             QbitClient::with_credentials(&server.uri(), "user".into(), "stale".into()).unwrap();
-        assert!(client.list_torrents().await.unwrap().is_empty());
+        assert_eq!(
+            client.list_torrents().await.unwrap(),
+            [] as [crate::Torrent; 0]
+        );
     }
 
     #[tokio::test]
@@ -1072,6 +1081,9 @@ mod tests {
             .await;
 
         let client = QbitClient::new(&format!("{}/qbt", server.uri())).unwrap();
-        assert!(client.list_torrents().await.unwrap().is_empty());
+        assert_eq!(
+            client.list_torrents().await.unwrap(),
+            [] as [crate::Torrent; 0]
+        );
     }
 }

crates/arr-indexer/src/search.rs

@@ -707,7 +707,10 @@ mod tests {
         );
         assert_eq!(searches[2].error, None);
 
-        assert!(searches[3].releases.is_empty());
+        assert_eq!(
+            searches[3].releases,
+            [] as [crate::search::SearchRelease; 0]
+        );
         assert_eq!(searches[3].error, Some(SearchError::InvalidResponse));
     }
 

crates/arr-meta/tests/tmdb.rs

@@ -216,7 +216,7 @@ async fn unreleased_movie_has_no_dates_and_no_imdb_id() {
     assert_eq!(movie.digital_release, None);
     assert_eq!(movie.imdb_id, None);
     assert_eq!(movie.runtime, None);
-    assert!(movie.origin_countries.is_empty());
+    assert_eq!(movie.origin_countries, [] as [std::string::String; 0]);
     // TMDB reports vote_average: 0 for an unrated title — absence, not zero
     // (#156), so it is normalised away like any other zero-valued null.
     assert_eq!(movie.vote_average, None);
@@ -537,7 +537,7 @@ async fn find_by_imdb_resolves_series() {
         .await
         .expect("lookup succeeds");
 
-    assert!(results.movies.is_empty());
+    assert_eq!(results.movies, [] as [arr_meta::MovieSearchResult; 0]);
     assert_eq!(results.series.len(), 1);
     let series = &results.series[0];
     assert_eq!(series.tmdb_id, 82_728);

crates/arr-subs/src/command.rs

@@ -417,7 +417,7 @@ mod tests {
     fn the_template_splits_on_whitespace() {
         assert_eq!(argv("ssh box claude -p"), ["ssh", "box", "claude", "-p"]);
         assert_eq!(argv("  claude  "), ["claude"]);
-        assert!(argv("   ").is_empty());
+        assert_eq!(argv("   "), [] as [std::string::String; 0]);
     }
 
     /// #225: a fresh verdict is served straight from the cache; a stale one

crates/arr-subs/src/translate.rs

@@ -612,7 +612,7 @@ mod tests {
         .await
         .expect("nothing to send");
 
-        assert!(translated.is_empty());
+        assert_eq!(translated, [] as [crate::srt::Cue; 0]);
         assert_eq!(backend.calls.load(Ordering::SeqCst), 0);
     }