code refactor

Reviewed-on: #26

crates/application/tests/diary/get_review_history_test.rs

@@ -0,0 +1,27 @@
+use domain::testing::test_movie_with_year;
+use std::sync::Arc;
+
+use domain::{ports::DiaryQuery, services::review_history::Trend};
+
+use application::{
+    diary::deps::GetReviewHistoryDeps, diary::get_review_history,
+    diary::queries::GetReviewHistoryQuery,
+};
+
+#[tokio::test]
+async fn returns_empty_history() {
+    let movie = test_movie_with_year("Test", 2024);
+    let movie_id = movie.id().value();
+
+    let diary = domain::testing::FakeDiaryQuery::new();
+    diary.seed_history(movie, vec![]);
+    let diary: Arc<dyn DiaryQuery> = diary;
+    let deps = GetReviewHistoryDeps { diary };
+
+    let (history, trend) = get_review_history::execute(&deps, GetReviewHistoryQuery { movie_id })
+        .await
+        .unwrap();
+
+    assert!(history.viewings().is_empty());
+    assert_eq!(trend, Trend::Neutral);
+}