feat: atomic goal, watchlist, profile writes

crates/application/tests/watchlist/add_test.rs

@@ -3,8 +3,9 @@ use domain::testing::test_movie_with_year;
 use std::sync::Arc;
 
 use domain::{
+    events::DomainEvent,
     ports::MovieCommand,
-    testing::{InMemoryStore, NoopEventPublisher},
+    testing::{InMemoryStore, NoopEventPublisher, RefusingWatchlistRepository},
 };
 
 use application::watchlist::{add, commands::AddToWatchlistCommand, deps::WatchlistAddDeps};
@@ -108,3 +109,50 @@ async fn adding_the_same_movie_to_a_watchlist_twice_keeps_a_single_entry_and_suc
 
     assert_eq!(movies.watchlist_count(), 1);
 }
+
+#[tokio::test]
+async fn adding_an_entry_records_the_entry_and_its_event_together() {
+    let movies = InMemoryStore::new();
+    let movie = test_movie_with_year("Heat", 1995);
+    movies.upsert_movie(&movie).await.unwrap();
+    let deps = make_deps(Arc::clone(&movies), Arc::clone(&movies));
+
+    add::execute(
+        &deps,
+        add_to_watchlist_command(uuid::Uuid::new_v4(), movie.id().value()),
+    )
+    .await
+    .unwrap();
+
+    assert_eq!(movies.watchlist_count(), 1);
+    let recorded = movies.recorded_events();
+    assert_eq!(recorded.len(), 1);
+    assert!(matches!(
+        recorded[0],
+        DomainEvent::WatchlistEntryAdded { .. }
+    ));
+}
+
+#[tokio::test]
+async fn a_refused_add_propagates_and_records_nothing() {
+    let movies = InMemoryStore::new();
+    let movie = test_movie_with_year("Heat", 1995);
+    movies.upsert_movie(&movie).await.unwrap();
+    let deps = WatchlistAddDeps {
+        watchlist: Arc::new(RefusingWatchlistRepository),
+        ..make_deps(Arc::clone(&movies), Arc::clone(&movies))
+    };
+
+    let result = add::execute(
+        &deps,
+        add_to_watchlist_command(uuid::Uuid::new_v4(), movie.id().value()),
+    )
+    .await;
+
+    assert!(matches!(
+        result,
+        Err(domain::errors::DomainError::InfrastructureError(m)) if m == "refused"
+    ));
+    assert_eq!(movies.watchlist_count(), 0);
+    assert!(movies.recorded_events().is_empty());
+}