diff --git a/crates/pinakes-core/tests/integration.rs b/crates/pinakes-core/tests/integration.rs
index da1035a..8cc4d4d 100644
--- a/crates/pinakes-core/tests/integration.rs
+++ b/crates/pinakes-core/tests/integration.rs
@@ -927,3 +927,108 @@ async fn test_transcode_sessions() {
     .unwrap();
   assert_eq!(cleaned, 1);
 }
+
+#[tokio::test]
+async fn test_batch_update_media_empty() {
+  let storage = setup().await;
+
+  // Empty ID slice must return 0 without error.
+  let count = storage
+    .batch_update_media(&[], Some("title"), None, None, None, None, None)
+    .await
+    .unwrap();
+  assert_eq!(count, 0);
+}
+
+#[tokio::test]
+async fn test_batch_update_media_no_fields() {
+  let storage = setup().await;
+  let item = make_test_media("bum_nofield");
+  storage.insert_media(&item).await.unwrap();
+
+  // No fields to change: implementation returns 0 (only updated_at would
+  // shift, but the bulk path short-circuits when no real fields are given).
+  let count = storage
+    .batch_update_media(&[item.id], None, None, None, None, None, None)
+    .await
+    .unwrap();
+  assert_eq!(count, 0);
+}
+
+#[tokio::test]
+async fn test_batch_update_media_single_field() {
+  let storage = setup().await;
+  let item = make_test_media("bum_single");
+  storage.insert_media(&item).await.unwrap();
+
+  let count = storage
+    .batch_update_media(&[item.id], Some("Bulk Title"), None, None, None, None, None)
+    .await
+    .unwrap();
+  assert_eq!(count, 1);
+
+  let fetched = storage.get_media(item.id).await.unwrap();
+  assert_eq!(fetched.title.as_deref(), Some("Bulk Title"));
+  // Fields not touched must remain unchanged.
+  assert_eq!(fetched.artist.as_deref(), Some("Test Artist"));
+}
+
+#[tokio::test]
+async fn test_batch_update_media_multiple_items() {
+  let storage = setup().await;
+
+  let item_a = make_test_media("bum_multi_a");
+  let item_b = make_test_media("bum_multi_b");
+  let item_c = make_test_media("bum_multi_c");
+  storage.insert_media(&item_a).await.unwrap();
+  storage.insert_media(&item_b).await.unwrap();
+  storage.insert_media(&item_c).await.unwrap();
+
+  let ids = [item_a.id, item_b.id, item_c.id];
+  let count = storage
+    .batch_update_media(
+      &ids,
+      Some("Shared Title"),
+      Some("Shared Artist"),
+      Some("Shared Album"),
+      Some("Jazz"),
+      Some(2025),
+      Some("Batch desc"),
+    )
+    .await
+    .unwrap();
+  assert_eq!(count, 3);
+
+  for id in &ids {
+    let fetched = storage.get_media(*id).await.unwrap();
+    assert_eq!(fetched.title.as_deref(), Some("Shared Title"));
+    assert_eq!(fetched.artist.as_deref(), Some("Shared Artist"));
+    assert_eq!(fetched.album.as_deref(), Some("Shared Album"));
+    assert_eq!(fetched.genre.as_deref(), Some("Jazz"));
+    assert_eq!(fetched.year, Some(2025));
+    assert_eq!(fetched.description.as_deref(), Some("Batch desc"));
+  }
+}
+
+#[tokio::test]
+async fn test_batch_update_media_subset_of_items() {
+  let storage = setup().await;
+
+  let item_a = make_test_media("bum_subset_a");
+  let item_b = make_test_media("bum_subset_b");
+  storage.insert_media(&item_a).await.unwrap();
+  storage.insert_media(&item_b).await.unwrap();
+
+  // Only update item_a.
+  let count = storage
+    .batch_update_media(&[item_a.id], Some("Only A"), None, None, None, None, None)
+    .await
+    .unwrap();
+  assert_eq!(count, 1);
+
+  let fetched_a = storage.get_media(item_a.id).await.unwrap();
+  let fetched_b = storage.get_media(item_b.id).await.unwrap();
+  assert_eq!(fetched_a.title.as_deref(), Some("Only A"));
+  // item_b must be untouched.
+  assert_eq!(fetched_b.title, item_b.title);
+}