test: move application tests to tests/

test_support/test_helpers -> tests/support; watched_at unified w/ domain test_watched_at (2024-03-15).
Kept inline: users::diary_filter tests (feed_sort_to_direction_all_variants, paged_user_filter_builds_correctly) - pub(super) helpers in private module.
Dropped stale never-compiled users/tests/get_users.rs (old execute signature).

crates/application/tests/import/apply_profile_test.rs

@@ -0,0 +1,108 @@
+use crate::support::apply_import_profile_command;
+use std::sync::Arc;
+
+use chrono::Utc;
+use domain::models::ImportProfile;
+use domain::ports::{ImportProfileRepository, ImportSessionRepository};
+use domain::testing::InMemoryStore;
+use domain::value_objects::{ImportProfileId, UserId};
+use uuid::Uuid;
+
+use application::import::apply_profile;
+use application::import::deps::ApplyProfileDeps;
+
+#[tokio::test]
+async fn fails_when_profile_not_found() {
+    let profiles = InMemoryStore::new();
+    let sessions = Arc::clone(&profiles);
+
+    let deps = ApplyProfileDeps {
+        import_profile: Arc::clone(&profiles) as _,
+        import_session: Arc::clone(&sessions) as _,
+    };
+
+    let result = apply_profile::execute(
+        &deps,
+        apply_import_profile_command(Uuid::new_v4(), Uuid::new_v4(), Uuid::new_v4()),
+    )
+    .await;
+
+    assert!(result.is_err());
+}
+
+#[tokio::test]
+async fn fails_when_session_not_found() {
+    let profiles = InMemoryStore::new();
+    let sessions = Arc::clone(&profiles);
+    let user_id = Uuid::new_v4();
+
+    let profile = ImportProfile::new(
+        ImportProfileId::generate(),
+        UserId::from_uuid(user_id),
+        "test".into(),
+        vec![],
+        Utc::now().naive_utc(),
+    );
+    let profile_id = profile.id.clone();
+    profiles.save(&profile).await.unwrap();
+
+    let deps = ApplyProfileDeps {
+        import_profile: Arc::clone(&profiles) as _,
+        import_session: Arc::clone(&sessions) as _,
+    };
+
+    let result = apply_profile::execute(
+        &deps,
+        apply_import_profile_command(user_id, Uuid::new_v4(), profile_id.value()),
+    )
+    .await;
+
+    assert!(result.is_err());
+}
+
+#[tokio::test]
+async fn applies_profile_mappings_to_session() {
+    let profiles = InMemoryStore::new();
+    let sessions = domain::testing::InMemoryStore::new();
+    let user_id = Uuid::new_v4();
+
+    let profile = ImportProfile::new(
+        ImportProfileId::generate(),
+        UserId::from_uuid(user_id),
+        "letterboxd".into(),
+        vec![domain::models::FieldMapping {
+            source_column: "Name".into(),
+            domain_field: domain::models::import::DomainField::Title,
+            transform: domain::models::import::Transform::Identity,
+        }],
+        Utc::now().naive_utc(),
+    );
+    let profile_id = profile.id.clone();
+    profiles.save(&profile).await.unwrap();
+
+    let session = domain::models::ImportSession::new(UserId::from_uuid(user_id));
+    let session_id = session.id.clone();
+    sessions.create(&session).await.unwrap();
+
+    let deps = ApplyProfileDeps {
+        import_profile: Arc::clone(&profiles) as _,
+        import_session: Arc::clone(&sessions) as _,
+    };
+
+    apply_profile::execute(
+        &deps,
+        apply_import_profile_command(user_id, session_id.value(), profile_id.value()),
+    )
+    .await
+    .unwrap();
+
+    // Verify the session got updated with field_mappings and row_results cleared
+    let updated =
+        ImportSessionRepository::get(&*sessions, &session_id, &UserId::from_uuid(user_id))
+            .await
+            .unwrap()
+            .unwrap();
+    assert!(updated.field_mappings.is_some());
+    assert_eq!(updated.field_mappings.unwrap().len(), 1);
+    assert!(updated.row_results.is_none());
+}